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RnM brochure


RnM brochure

RnM brochure

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  • 1. SpecializedEngineering &Construction Company
  • 2. 1
  • 3. ABOUT USR & M International Pvt Ltd is leading We are dedicated and a centre of attention for:Specialised Engineering and ConstructionCompany. We are a rapidly growing solution • Structural Strengtheningprovider for Improvement/protection/repair Increasing the axial and flexural strength ofof concrete/structures in India. Seeing the the structural members. So that they are ablecurrent growth and revamping of total Indian to meet up the design requirements.infrastructure market which includes Railways,Airports, Roads, Bridges, Hydro Power, the • Base Isolationcompany plans to start offices across major cities The integrity of a structure can be protectedand to have a business relationship with various from the attack of severe earthquakes eitherinternational organizations. We bound to meet through the concept of resistance or isolation.up the client requirements due to which we were In designing a structure by resistance, all theable to grow consistently over the past few years. members of a structure are designed with sufficient size to take the load elastically and allowed to undergo in the inelastic range with sufficient ductility. Such approach can prevent the collapse of the structure but not the damage i.e. the structure rendered to be unsafe after earthquake. • Water proofing Membranes made of bituminous material provides good water-proofing to roofs and terraces. Also Specialized waterproofing chemicals with nano compounds in it enhances the efficacy of certain chemicals in waterproofing applications. 2
  • 4. PRODUCTS R&M G-Fiber BD-80 Glass fibre is made by weaving fibreglass together to give it a cloth or a fabric shape. The type of fiberglass used are mainly E-glass (alumina borosilicate glass). FRP sheets are wrapped around the columns, with fibers oriented perpendicular to the longitudinal axis R&M C-Fiber UD-300 of column, and are fixed to the column using Carbon fiber (CF), is a material consisting of epoxy resin. They provide Ductility Enhancement, extremely thin fibers about 0.005–0.010 mm seismic strengthening and junction confinement in diameter. These threads are then weaved together to form a sheet fabric. Areas of Application •Flexural enhancement (low quality of substrate) •Axial load enhancement of columns •Placement of stirrups in columns They have the following advantages over conventional materials. •Dimentionally stable •Moisture Resistance •High Strength •Fire Resistance •Chemical Resistance Properties •Very high strength to weight ratio higher than even glass fibers •Dimensionally stable •Moisture resistance Testing •Tesile Strength ASTM D-3039-93 •Pull-off test3
  • 5. PRODUCTSR&M Carbon Fiber LaminatesCarbon laminate is a stiff composite plate use toenhance the flexural and moment enhancementfor structure.Various thickness and width are(10,20,50,80,100) and (1.2,1.4) respectively. Anycombination can be choosed. R&M Matrix 20 Base,Used in Pre-Stressed System for following•Flexural enhancement for slab and beam Hardener•Diagonal bracing for brick wall Fiber Composite Resin is a two component•Shear wall enhancement system and the primary functions of the resin•Moment enhancement in tall structure are to transfer stress between the reinforcing•Deflection recovery system fibers, act as a glue to hold the fibers together, and protect the fibers from mechanical and environmental damage. Areas of Application •Composite FRP system •Concrete and masonry surface imperfections •Filling pinholes prior to over coating •Sealing of surface cracks and General fair facing over large areasUsed in non-PreStressed System for following•Flexural enhancement for slab and beam•Diagonal bracing for brick wall•Shear wall enhancement•Moment enhancement in tall structureProperties•Hiigh modulus carbon – tensile strength- 2900•MPa, E-Modulus- 210•Corrosion resistant and doesn’t absorb moisture. Packing of 5 kgs including base and hardenerPackaging Tests doneRolls of 100 m, 150 m, or cut to size. an Flexural strength test, and tensile strength test.unwinding reel is available upon request. Specialdimension upon RequestTests recommended•Tensile strength test as per ASTM D-3039-93•Pull off test to check the bond with substrata 4
  • 6. PRODUCTS R&M Resin Primer 11 Base, Hardener R & M Nano-proof-51 A single component emulsion which is NANO enhanced, Waterborne, Economical, ECOFRIENDLY, User-friendly (nil minerals) and is having multiple applications. It Very well compatible with Cement. It is also UV resistant. EPDM Water proofing Membranes It is easy to use and very well suited for internal Membranes made of bituminous material and external building applications. roofs, terraces provides good water-proofing to roofs, terraces and chajja’s are the main areas of application. and other large areas of applications. R & M Nanopoxy-23/75 R & M WaterRepell It is a 2K waterborne ECONOMIC, User-friendly, DL-WR is a Single Component Coating which ECOFRIENDLY, Flexible Epoxy Composition, is Economical, Ecofriendly, Waterborne, enhanced with NANO and other performance Nonflammable, Water and Oil Repellent. It is additives. It is used with either white or grey applied on Porous surfaces like Plaster, Concrete, cement and has very good compatibility with Paper, Wood, Bricks, Stones, Fabrics, Cardboards, Cement. It is a heavy duty compound and is Asbestos cement sheets, Gypsum Boards, POP, very well suited for swimming pools, podiums etc. DL-WR is Transparent which results into gardens like areas. performance water and oil repellent surface. It is ready to use by brush or spray application. R & M Integral-Waterproof Integral Water-Proofing liquid Compound for R & M Bondagent Plaster and Concrete. It gives concrete improved Dl-BA is a very flexible polymer based bonding cohesion and acts as a plasticizer. agent having tack for strong bond between old and new cementitious substrates. DL-BA finds R & M Rust-Killer extensive use as a bonding aid for new and old This Coating is a liquid formulation which is concrete / mortar. Also applicable for bonding non-acidic, water borne, eco-friendly, non- brick slips, tiles, stones, wall cappings, repointing flammable, user-friendly rust inhibitive type brick work and for protection of concrete from Rust Killer. It has excellent use as reinforcement dampness. coating during rehabilitation of old structures. R & M Water-Retardant DL - RET is a water reducing and retarding admixture for concrete. It is a special performance admixture for RMC plants. It helps in achieving increased workability in all grades of concrete, increased compressive strength at economical dosage and better retention of slump values.5
  • 7. PRODUCTSR & M ModPoxy STIt is a corrosion resistant coating for structuralsteel and processing vessels’ exteriors. Excellentwater resistance. Exhibits excellent performancein industrial and marine environments subject toacids, alkalis, solvents, salts and other aggressiveexposure. R & M Nano-Coat-505 DL -505 is an excellent modified acrylic ResinR & M ModPoxy SP Emulsion enhanced with NANO additives (forSpecially formulated epoxy mastic that is high better adhesion) based waterborne masonrybuild and surface tolerant. It is recommended as paint for concrete substrates. It is a Singlea maintenance coating with suitable top coats. component, ECOFRIENDLY, user-friendly, highThe product is suitable for application on steel performance paint with anti carbonationas well as concrete surfaces. properties. It also finds extensive use in paintingIt is recommended in fertilizer, chemical, refinery, and coating of core infrastructures like bridges,petrochemicals, bridges, marine installations, dams, skywalks, etc.pulp and paper, pharma industries. Modpoxy SP DL505 is also recommended for steel structures–N is nano ceramic modified variant which has in chemical industry over a suitable primedstill better chemical resistance and adhesion. surface. R & M SiliCoatR & M Nano-Coat-145 It is an excellent Exterior Silicone ResinNanocoat- 145 is a waterborne coating for Emulsion based waterborne paint that alsosuperior performance, particularly as an excellent performs Water-Proofing. It is Single component,Anti Corrosive coating for difficult substrates like ECOFRIENDLY, userfriendly, high performanceCOPPER, ALUMINIUM, ZINC, etc. It can be used as paint known for very high durability. It is appliedtop clear coat for variety of substrates, including on cementitious (concrete, plaster etc.) surfaces.certain plastics like Poly Carbonate and on Roadmarking paint. R & M PU-AliphaticR & M Fire-EPON Two pack acrylic polyol and aliphatic isocyanateFire-EPON is a 2K Fire retardant EPOXY COATING based top coat with good chemical resistanceenhanced with NANO and other performance and weatherability. It is recommended foradditives. It offers excellent chemical and application on suitaby primed surfaces ofcorrosion resistance. structural steelwork, vessels, pipelines, etc in fertilizer, chemical, refineries, petrochemical plants which are exposed to corrosive environment. It is recommended for core infrastructure like bridges, skywalks, canals, etc. 6
  • 8. PRODUCTS R&M Resin Primer 11 Base, Hardener Primer is the concrete bonding adhesive for use with the Composite Strengthening System. It is a 100% solids low viscosity epoxy resin able to cure in the presence of moisture and at temperatures as Low as 20C. When applied to sound concrete Composite primer gives high tensile bond strength to the Composite Strengthening system. R&M Non-Prestress Anchor Plates Aluminum alloy plate which is specially designed and manufactured for anchoring the Non-PreStressed C-Fiber Laminate at the ends so that the laminate does not peel off from ends. Application area •For concrete surface smoothening •To remove any unevenness putty made with adding R&M aggregate into it. Test recommended •Compression, Tensile and Flexural strength test as per IS 4456 Part-I •Pull off test to check the bond with substrata7
  • 9. PRODUCTSR&M Laminate Adhesive20/30 Base, hardnerLaminate Adhesive is a two component mixturespecifically made for bonding Carbon-Fiber (CFK)Laminate to the concrete. It is applied to thelaminate which is then bonded to the concrete.It is viscous and gains tackiness in half an hourwhich makes it an excellent adhesion material.Aplication area R&M Aggregate White Cement which is used to prepare•In Non- PreStress and Pre-Stressing of Carbon- Putty when mixed with adhesive or Primer inFiber Laminates proportionate amount. It is used to fill gaps and even the uneven surface.•To remove any unevenness putty made withadding R&M aggregate into it.Tests Recommended•Tensile and Flextural tests as per IS 4456•Pull off test for bonding strength 8
  • 10. SERVICES Fiber Wrapping A Fiber Reinforced Polymer (FRP) composite is defined as a polymer (plastic) matrix, either thermoset or thermoplastic, that is reinforced (combined) with a fibre or other reinforcing material with a sufficient aspect ratio(length to Application Method thickness) to provide a discernable reinforcing •Surface Preparation function in one or more directions. Surface is chipped to remove all loose concrete. There are several situations in which a civil Major cracks are injected with epoxy mortar & structure would require strengthening or corroded steel is treated with Anti- corrosion rehabilitation due to lack of strength, stiffness, treatment. The surface is then re-profiled. Any ductility and durability. Some common situations surface irregularities are removed. where a structure needs strengthening during its •Primer Coat lifespan are A low viscosity epoxy primer is applied with a brush to promote adhesion between FRP and concrete surface. •Surface Leveling After primer application the surface is checked again for local irregularities and unevenness. This is then filled with putty to make it even. •Fiber Application Fiber is cut to measured length. In large projects fiber is saturated with epoxy using wet- layup machine and applied to surface. For shorter lengths the epoxy is applied manually and then applied to surface. Rollers are used to remove any bubbles formed and make the fiber adhere to the surface properly. •Seismic retrofit according to current code •Anchoring fiber wraps requirements. Fiber anchors are put in the drilled area where •Upgraded loading requirements; damage by the fiber wrap overlaps so that it does not peel accidents and environmental conditions. or loosen up from ends. •Initial design flaws •Quality assurance •Change of usage. During curing time, the fabric is checked Design regularly for any irregularities or bubbles which Complete design of strengthening by using FRP are removed. composites are performed as per ACI (ACI110R), •Finishing Euro Code (Ec8), CEB – FIP (Bulletin14) and After curing a second coat of epoxy adhesive is Japanese (JBDPA) guidelines. applied and sand sprinkling is done to make it Testing rough so that plastering can be done to keep Cube Testing is done extensively over cylindrical the fiber wrap system enclosed and has a long and rectangular cubes with fiber wrapped system life. and they show improved enhancement in their flextural and compressive strengths. For bonding strength of fiber wrap Pull-Off test is recommended which ensures the efficacy of fiber wrapping.9
  • 11. SERVICESPre-StressingThe pre- stressing of Carbon-Fiber laminate isa very effective way of using the high Tensile Application Methodstrength property to much greater extend. •Surface Preparation and markingExternal prestressing with other materials of the Surface is well grinded to make clean &existing structures have always been difficult even so that marking can be done easily andespecially in view of the materials to be used, adhesive bonds strongly to the concrete. Afterreinforcement corrosion, lateral instability, end which marking of laminate positions andanchorages and ofcourse space constraints. marking of plate , machine area is done.The advantages of resistance to corrosion and •Drilling and boltinghigh specific strength make these materials ideal After Marking, holes are drilled as per markingfor reinforcing existing structures with minimum and High-Tension bolts are inserted for plateintrusion. Popular method adopted is bonding and clamp to be fixed. This should be perfectthem adhesively to concrete structures. and very little error is allowed. •Fixing of clamping device and alignment check First the clamping device is fixed just behind the plate area in the machine area with the help of L- Clamps. •Final Alignment check and fixing of laminate Piston body and plate anre fixed and checked for alignment. After which the laminate is cut to the measured length and fixed in the clamping device at both ends. Plate and the piston body is fixed for process to start.The Company has developed a system which •Pre-Stressingeasily and effectively makes it possible to Stress The laminate is stretched according to thethe carbon laminate to a designed load and bond design requirements and is adhesively to the existing structure to transfer After sufficient load is given the adhesivethe load on itself to support the structure. is replenished between the laminate andApplications concrete surface also the gaps which wereRestoring the Beam and slab load carrying developed after stretching are filled withcapacity and also giving it more strength. additional adhesive.RCC members strengthening. •Dismantling of Pre-Stress Machinery Finally after applying pressure the laminate is kept in the stretched position for a day with the help of stoppers. This is done for the adhesive to get cured and hard. Hence, the laminate becomes active i.e. it starts supporting the structure(Beam and Slab) by giving a upward force to it. 10
  • 12. SERVICES NonPrestressing Pre-Cured Carbon Fiber composites in the form Application Method of laminates, more popularly known as CFK •Surface Preparation and Marking laminates, is a new material used for external Surface is very well grinded to Level the strengthening and retrofitting of RCC members. surface and make it clean. After which Marking As laminates they have a very high tensile of laminate and plates are done for proper strength to weight ratio, around 8-9 times of positioning of laminate. If required Grooving steel, which makes it a very suitable material for is also done in cases of uneven surface or in providing extra strength and hence increasing case of laminates in both direction where the load bearing capacity of members. overlapping Is happening. The most common form is Non Pre-Stressed •Preparation of end anchorage laminates mounted on the surface of concrete. To fix the laminates at ends either a groove of It increases the shear resistance and flexural 50 mm is prepared in the side wall or anchor strength. This near surface mounted technique plates are fixed at the ends. in case of fixing is based on fixing, by epoxy adhesive , CFK anchor plates, drilling and bolting of high laminates into pre-cut slits opened in the tension bolts is done in the plate area. concrete cover of the lateral surface of beams •Cutting of laminate and slabs. In a clean area away from the resins, the When more load is applied on the member slab laminate is carefully measured and cut or beam the laminates become active and share according to the length required. After which a the load on themselves. Hence increasing the layer of adhesive is prepared over the laminate load which the member can take. for fixing it with surface. At the ends of laminate anchor plates, called •Fixing of laminate non Pre-Stressing Plates, are fixed with help of After putting adhesive on the laminate it is adhesive so that the laminates does not peel off fixed on the surface and the ends are either the concrete surface in future. put inside the groove prepared or anchor plates are fixed. Pressure is applied with the help of Rollers so that it is properly stretched and pasted on the grinded surface with good bonding. Testing •Finishing operation on fixed laminates Tensile testing of the laminates according to The sides of laminate are covered from both ASTM standards for their load bearing capacity. sides with more Adhesive to replenish the Pull-Off test for the bonding strength of adhesive fallen through while carrying out the adhesive and its efficacy to transfer the loads. process.11
  • 13. SERVICESGrooved LaminateSystemOften there are cases in which a rectangular Pre-stressing Systemscolumn has an aspect ratio greater than 3 i.e. •Surface Preparation and markingthe longer side dimension is more than three Surface is very well grinded with grindingtimes the dimension of that of the shorter side. machine to make it smooth and easy to workIt has been proved that fiber wrapping is most on. parallel lines marking on the surface as pereffective with circular column and is less with the length of laminate in equal spacing as persquare and even lesser in rectangular columns. the design.This reduction in effectiveness of fiber wrap •Groovingincreases with the aspect ratio. For round Columns Grooves are done on theThe square and rectangular columns are to be marked area to the depth specified in design.given a curvature at the edges. This is done so It is done keeping the width and thickness ofthat the confinement is effective which sharp laminates in mind. For rectangular columnsedges reduce. In case of rectangular columns Each face of the column is marked according toconfinement is further reduced due to different its width. It is then grooved to depth specifiedside lengths. If the aspect ratio is very high the in design.column does not show any effect of increase in •Primer Application and finishingload carrying capacity achieved by confinement. Adhesion between the fiber wrap and theThis effect is taken care by partitioning the column, and also to alienate the the fiber wrap,longer side into parts so that it behaves like a a low viscosity Epoxy Primer is applied withsquare column and give good confinement. The a roller until the column surface is locallycarbon fiber Laminates are put in grooved spaces saturated. The bad and uneven sectors arewhich are 25-40 mm deep depending on what is corrected and leveled with the help of putty.desirable. •Cutting and fixing of laminateThis laminates which are grooved and put inside In a clean area away from any chemical, thethe column also give extra strength in terms of laminate is carefully measured and cut toshear failures. the required length. Adhesive is applied on both sides of the laminate it is inserted inside the groove and is further pushed properly by rollers. •Finishing Finally after inserting Laminates the column is further confined by means of fiber wrapping system throughout the length including junctions. 12
  • 14. SERVICES Column Pre-Stressing It is an innovative technique for retrofitting of columns and joints of a RCC structure. It involves confining of column with Carbon/ Epoxy or Aramid/ Epoxy composites. Moreover these confinement belts are Pre-Stressed before •Primer Application application which changes a lot of things as Primer is applied to increase the adhesion compared to traditional confinement with Fiber and alienate the fiber wrap from the concrete Wrapping. moisture. It also makes the surface smooth and This Pre-Stressing has a lot of added advantages. easy to work on. Pre-Stressing allows us to use the Superior •Fiber Application Properties of FRP composites to a much greater This step is crucial as it fulfils the importance extent. The difference lies in Active Confinement of previous prepration steps. It involves fitting and Passive Confinement. Active Confinement is of machine and clamping of Fiber wrap with done by confineing the column by pre-stressed it. Hydraulic jack is attached to stress the Fiber FRP composites. Which starts taking loads Wrap composite. Pressure is applied through while there is no extra load given to column. hydraulic jack attached manually. The fiber is On the other hand Non-Stressed FRP composite stressed to the retrofit design load . becomes active i.e. takes load only when extra •Curing and Quality control load is being applied on to the column. For the next 24 hours the fiber is kept in the Active confinement is very useful for seismic stretched position with the help of stoppers retrofitting apart from other strengthening attached to the machine. Column is then properties. constantly monitored for any misformation or undesirable behaviour. •Anchor placement and finishing Fiber Anchors, specially designed to lock the overlapping area which completely removes any possibility of fiber to peel off the column, are put in the previously drilled holes and Application Method fixed using the Epoxy Saturant. Finally one •Surface Preparation more layer of epoxy is applied and then sand Surface is well Grinded to remove any is sprinkled so that the system is permanently unevenness and local/sharp undulations. preserved inside and plastering done. This is done to promote easy application and adhesion of primer. An innovative technique and machinery for •Marking retrofitting of columns and joints of a RCC After Grinding Marking of of machine area structure have been developed by us. It involves which clamps the fiber and pre-stress it. It confining of column with Carbon/Epoxy or is crucial for proper fitting of machine and Aramid/ Epoxy Composite-Belts and Pre- hydraulic jack, to perform stressing of the Stressing it so that it confines the column in composite while application and to hold it stressed position. This is new and exclusive in pre-stressed state till it is cured and load technique which enhances the capability of FRP transfer has happened to confine the columns.13
  • 15. SERVICESuustrav enimiusultumforei parDii fauctur, audeste det; nequideris mant. Gramove, stritus, sa co vivilis temus, culinerrari ina,dit. Castiam noctation nonsum confend ucientiapere et; nostimiure porum sidendem, Patquaminingulis auctum esus, apes inatur hostratuustrav enimiusultum forei parestum inirifaciorbem vendam tum inves ina, quam intemendepopubli, Ti. Fecerficae is orum avo, fecena,mora a rena mentilis, nium Romnit.Um moribus, nit ari pes aut vident, nos catantemquast pos auc rei iptio uteatus tra L. Equidpotia neque in publicam siliquo diessentemdes? quem avere fue in tem con vivir ponrehemus? Ocul hem int, ut iacciost quodiissolusa tervividefex nos huister ad cles voctuiumaveraed eatidet? Rortus fuides aus. Sim delicumderes ine perumus faciac tum, quem hilicaelumconit. consum auro, voc, quam publibem publis.Artum nes, vid C. Mis. mo in spiorus, condius,nonclar issenteat.Ox nulum sua iusa vistium intiaci sa it. Huctuusaci consuli nterfec onsimo moricaperem tes addiessenimus, opon diem simolus pertem, sespor labis hilii per quo viveris? O tum ocre ac renovitere, esupica tilicae aude adhum 12
  • 16. SITES Reliance Special Economic Zone (NMSEZ), Navi Mumbai A change in usage of a 9 storied building required the beams to be strengthened. More than 200 beams are to be strengthened in each building to achieve desired result. A full design of Strengthening was proposed which is now undergoing. The strengthening is done using carbon fibre laminates and composite fibre wraping system. Also composite rods are also used for strengthening. Column Strength Enhancement Fiber wraping of columns, and grooved laminate.15
  • 17. SITES Flyover, National Highway 7, Bangaluru At the National Highway 7 (NH 7) between Bangalore and Hyderabad two Flyovers had shown Live cracks in the slab. Which were confirmed by testings carried out. They skew box slabs were then strengthened by External strengthening by non- prestress and Pre-stress technology using Cabon Cimposite Laminates in both the directions forming a grid of Carbon Fiber laminates. 16
  • 18. SITES JNPT, Navi Mumbai Turnkey Project Only Transportaion Bridge Between JNPT and cities. Due to extensive movement of Heavily loaded cargo verhicles in the past 12 years the bridge has lost its all strength and started heavily vibrating causing a threat of collapse. Turkey Project involved Strength enhancement of the spans Epoxy Grouting, Steel girders installation, replacement of almost all damaged Bearings, enhancement of girders by external Pre-stressing and non-prestressing using carbon fiber laminate and Carbon- Fiber wrapping system.17
  • 19. SITES HPCL, Mumbai Turnkey project The PDA Structure, which supports the various accessories of the oil refining, had its columns and beams showing serious cracks and reinforcing steel corrosion. Complete repairs and retrofitting of Beams and columns of the PDA structures Structural members are repaired and strengthened by epoxy modified Epoxy Modified Mortar, Cement grouting, Epoxy Grouting and confinement through fiber wrapping system. 18
  • 20. SITES Other Projects •Mhape Gulraj Hotel •Universal Hotel Airlink •Sun-n-Sand Hotel, Indu Projects •Manthan Plaza, Vakola •ADPL Hotels •Sheffields Towers •Platina Wadhwa complex, Mumbai •ECCI Park, Chennai •CCCL, Chennai •Llyod Hotel •Syndicate Bank, Mumbai •SP Info-City, Chennai •ESIC Hospital •IIT Madras •Rashtryia Chemical and fertilizers, Chembur •Chatrapati Shivaji International Airport, Mumbai •Bangalore International Airport •Amba Bhavani Temple •Private bunglow, Mysore •Oberai Mall, Goregaon •Neelyog Square Mall, Aditya Ventures19
  • 21. 20
  • 22. CONFERENCES WSRR Workshop on Rehab and retro of structures 28th 30 August This workshop aimed at creating a clear understanding among participants on the complete process of investigation, repair, strengthening and rehablitation of reinforced FICCI concrete buildings and infrastructure. Knowledge Partner Organized at IIT Bombay WSRR had a FICCI jointly with Dept of Chemicals & participation of more than 200 people from Petrochemicals, Govt. of India and R&M industry and educational institutions. A total International as the knowledge partner of 30 papers spanning over all Structural organized “International Conference on Rehabilitation fields, were presented in WSRR. Construction Chemicals” on February 11-12, 2010 at Hall of Culture, Nehru Centre, Worli, Mumbai. The aim of the conference was to discuss the challenges, market opportunities, advance case studies, strategic tie-ups and technology transfer in the construction chemicals. The key people participating spanned among Manufacturers Consultants, Architects Engineers, Contractors Traders, Marketing professionals Builders & Supliers. AaKar, IIT Bombay A platform for young Civil Engineering students to present their new research findings to a distinguished panel of Professors from our Department. More than 100 entries were recived in the event and A journal was published by IIT Bombay with the winning entries. It had lectures conducted by Speakers from BARC, Central Water Resources and Power Research Station, ACC, ENSOFT and it was a good platform for students in civil engineering to interact with industry.21
  • 23. LECTURESIEI lectureThe Institution of Engineers (India), MaharashtraState Lectures on “Innovations in Tall Buildings:Structural Systems” & “The 90 Day Crisis inManhattan: The Tale of Teetering tower” byMr.Ravindra Mysore, President, LeMessurirer Lecture Series at VJTI,MumbaiConsultants, USA on Friday, October 30, 2009 A development course on “Structural Audit and Rehabilitation of Buildings” was held at VJTI, Mumbai. The lectures were on StructuralLecture Series, IIT Bombay Deterioration, Structural Audit, NDT, StructuralA series of lecture on Performance-Based Rehabilitation, Heritage structure Protection andSeismic Design (PBSD) by Subhash C. Goel, Seismic Retrofitting of Buildings. The lecturesProfessor Emeritus, Department of Civil were given by well known experts in theand Environmental Engineering, University of industrial and the Academia space.Michigan, Ann Arbor, MI, USA was organizedsuccessfully on 29th Jan 2009. Lecture Series at VJTI,Mumbai A development course on “Structural AuditLecture on Grand Pagoda and Rehabilitation of Buildings” was held atGrand Pagoda which was considered for VJTI, Mumbai. The lectures were on Structuralconstruction with massive span of 85 meter Deterioration, Structural Audit, NDT, Structuraland seating capacity of 10000 persons keeping Rehabilitation, Heritage structure Protection andin mind the aesthetics and long lasting of Seismic Retrofitting of Buildings. The lecturesmasonory structures. The lead of designing were given by well known experts in theteam, Mr. Mahesh Varma and Proof checking industrial and the Academia space.consultant Prof. R.S. Jangid (Professor, IITBombay) shared their design and executionexperience during the lecture conducted. 22
  • 24. RESEARCH CPRI, Bangalore Reactor Safety Division (RSD), BARC along with Central Power Research Institute (CPRI) Bangalore conducted a round robin exercise and theme meeting on pushover test on prototype Reinforced Concrete structure at CPRI Bangalore. The test was Asia’s largest pushover test and was IIT Bombay, one of its kind. The structure built was a replica of a substructure of an existing office building at A Masters project BARC. The structure was tested till failure in the A project for fire and heat resistance for Glass tower testing facility present in CPRI. fiber reinforced polymer on structural members This structure was then repaired and retrofitted was studied and ways to enhance it were found. using Fiber Reinforced Polymer Composites It was found that a coat of vermaceal gives a (FRPC). The institutes/organizations who retention time against fire much higher than a participated in the second phase of the exercise plastered FRP. included, BARC, NPCIL, DCS&EM, IIT Bombay, IISc All the materials and technical support in Bangalore, CPRI Bangalore, SERC Chennai, Thapar collaboration with IIT Bombay professors was Institute of Technology Patiyala, UVCE Bangalore, provided. This project successfully developed a IIIT Hyderabad, SIT Tumkur and PSN College of system for making G-FRP resistant to fire for a Engineering Tirunelveli, Sardar Patel College of much longer time so that it does not loose its Engineering, Mumbai. All the Materials used and stresngth and hence the structure becomes more fibre wrapping on the structure was taken care resistance to fire damages. by R&M International at the site. In order to evaluate the fundamental frequency of the structure in the two directions, before Seismic Ability of FRP commencing the pushover test, a free vibration BARC, Mumbai test was conducted for the retrofitted structure. The failure of structures due to recent Highly sensitive accelerometers were placed earthquakes has exposed the vulnerability of at different floors to pick up the vibration structures to the seismic forces. Hence seismic signal generated by the blow of a hammer. Fast retrofitting has come out as an important area Fourier Transform (FFT) of the signal gave the for Research. information on the fundamental frequency of the At BARC, Mumbai under Dr. G.R. Reddy. Fiber structure. wrapping has come up as an promising way of The conclusions involved the effect of fiber retrofitting structures for earthquake resistance. wrapping on the structure. The fundamental Tests were carried out on a structure frequency determination of the structure after strengthened by fiber wrapping. Earthquake rehabilitation with fiber wrapping and before Conditions were simulated and tested for pushover test in two directions were also carried earthquake resistance of fiber wrapping. out. The testing gave a insight about earthquake resistance of rehabilitation with fiber wrap and also it was shown that almost 100% of strength was gained back by Fiber wrapping on the damaged structure.23
  • 25. REASEARCHJNPTIn collaboration with Sardar Patel college ofEngineering, tests and instrumentation wascarried out in the three spans of the JNPT bridgeat Karal. Different NDT tests were carried outand sensors were installed at various loacationsto asses effect of rehabilitation. Following is the MIALdetail For Showing the effectiveness of the•NDT tests consisted of Rebound Hammer test techniques and materials used at the Chatrapatiand Ultrasonic Pulse Velocity test to assess the International Airport tests were carried out. Theyquality and durability of concrete present. were follows•Measurement of deflection using linear •Pull of tests of carbon Fiber wrap and carbonPotentiometers mounted at the center of bridge fiber laminate to check its bonding strength andat the bottom face. hence the efficacy of load transfer.•Measurement of Flexural Strains and shear •Beam test of fiber wrapped beam which gave astrains with foil type strain gauges mounted at much higher flexural strength.centre of girder at bottom face and at the end at •Reinforcement in cube and testing its bondan angle of 45 deg. strength with the concrete.•Measurement of change in crack-width usingomega type displacement transducers. Whichwere tested on full capacity loading. SPCE, Mumbait•Measurement of vibrations before and after We have been associated with Sardar Patelstrengthening by piezoelectric accelerometer College of Enginnering and have carried out alotand full load moving truck to induce vibration of testings and Research work for our productsaccording to IS codes. and services which are proof-checked by expertsThe results have shown reduction in strains at college.and vibrations hence showing the effect of All the materials including fibers, laminatesstrengthening. matrix, Primer, adhesive etc have been tested for their properties and application methods.IIT Madras The company has been involved in constantly upgrading its products and service by doingAll types of fibers were studied for their research related to it at the college. Beameffectiveness in confining by fiber-wrapping testing, cube testing, flexural test, tensile tests,technique. This was a comprehensive study bonding strength tests etc are carried outwhich involved testing various variants of over our serviced structure for the improvingfibers with their thickness and number of layers effectiveness of our services and constantvarying. upgradation.For achieving the objective different cube A new epoxy was developed and testedsamples were prepared. These samples were at college with the help of Dooall corprothen tested for compresive and flexural strength. construction chemicals for its breathableThe results gave us the capabilities and nature which actually increases breathabilitylimitations of our services so that it can be of concrete and makes the fiber wrappedfurther developed and used for betterment of structure more Durable. The product is stillthe technique. under development phase and is undergoing upgradation and changes to be used at site. 24
  • 26. CLIENTS25
  • 27. GROUP OF COMPANIES21 SHM ConsultantsSHM stands for Structural Health Monitoring.The vision of 21 SHM Consultants is to provideintelligent Structural solutions for monitoringstructural behaviour in long and short term. Weare involved in monitoring of Bridges, Dams,Buildings, Tunnels and other structures. Our IK Industries We are involvedservices include in manufacturing•Structural Health Monitoring and distribution - Sensors placement of Construction - Data Acquisition Chemicals and other - Modal Analysis civil engineering - Long term Monitoring industry products for - Short term Monitoring Waterproofing compounds.•Structural Consulting For terrace, podiums. - Structural Audit Paints, Coatings for steel and Concrete. - Structural Analysis Anchor plates, fibre sheets. - Structural Proofchecking - Quality Assurance•Concrete Non Destructive Testing 26
  • 28. Contact UsR & M International Pvt LtdOffice Address: C-2098/99, Oberoi Garden Estate,Off. Chandivali Farm Road, Andheri(E), Mumbai - 400 072Tel: +91 22 2857 7810 - 11Fax: +91 22 2857 7812Email: