Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: ...
Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: ...
Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: ...
Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: ...
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.

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Iu3314971500

  1. 1. Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: 2248-9622 www.ijera.comVol. 3, Issue 3, May-Jun 2013, pp.1497-15001497 | P a g eComparative Study of Effect of Silica Fume and Quarry Dust onStrength of Self Compacting ConcreteMs. Priyanka P. Naik*, Prof. M. R. Vyawahare*** Department of Civil Engineering, Babasaheb Naik College of Engineering Pusad, Amravati UniversityPusad, Yavatmal, Maharashtra, India** Associate Professor of Civil Engineering Department, Babasaheb Naik College of Engineering Pusad,Amravati University, Pusad,Yavatmal, Maharashtra, IndiaAbstractSelf compacting concrete is category of highperformance concrete that has excellentdeformability in the fresh state and highresistance to segregation and can be placed andcompacted under its self weight without applyingvibration. Over the last ten years, significantamount of work has been carried out on self-compacting concrete all over the world.The objective of this study is to compare thestrength characteristics between self compactingconcrete using silica fume and quarry dust. Asimple mix design for SCC proposed by Nan-Su etal has been used for fixing the trial mix. The trialmixes which satisfy the fresh concrete propertiesas per EFNARC guidelines and the one whichgives the maximum strength has been used in thepresent work. The harden properties such ascompressive strength, split tensile strength of SCCusing silica fume and quarry dust weredetermined, silica fume shows the better result instrength properties than those of quarry dust.Keywords – Self compacting concrete; Silica Fume;Quarry Dust; Compressive Strength; Split TensileStrength.I. IntroductionThe development of self compactingconcrete (SCC) has been one of the most importantdevelopment in the building industry. The purpose ofthis concrete concept is to decrease the risk due tohuman factor. The use of SCC is spreading worldwide because of its very attractive properties. Selfcompacting concrete has properties that differconsiderably from conventional slump concrete. SCCis highly workable concrete that can flow throughdensely reinforced and complex structural elementunder its own weight and adequately fill all voidswithout segregation, excessive bleeding, excessive airmigration or other separation and materials andwithout the need of vibration or other mechanicalconsolidation. The use of SCC is considered to havea number of advantages as: Faster placement Better consolidation around reinforcement. Easily placed in the walled element. Improves the quality, durability and reliability ofthe concrete structures. Reduces the total time of construction and thecost.It will replace manual compaction of freshconcrete with a modern semi-automatic placingtechnology and in that way improve health and safetyon and around the construction site. However, thistype of concrete needs a more advanced mix designthan traditional vibrated concrete and a more carefulassurance with more testing and checking, at least inthe beginning when using SCC. It is possible toimprove the mechanical properties of concrete byusing chemical, mineral additives. For instance,producing SCCs with the use of chemical additives,decreasing shrinkage and permeability and usingmineral additives increased compressive strength. Asit is well known, there are a wide range ofcementitious mortars based on cement andcomponents similar to those of concrete. The use ofindustrial by-products, such as SF, QD offers a low-priced solution to the environmental problem ofdepositing industrial waste.Silica FumeSilica fume as very fine non crystalline silicaproduced in electric arc furnace as a by product of theproduction of elemental silicon or alloys containingsilicon. It is usually a gray coloured powder,somewhat similar to Portland cement.Silica fume is usually categorized as asupplementary cementitious material. It has excellentpozzolanic properties. This term refers to materialsthat are used in concrete in addition to Portlandcement.Quarry DustBasalt fines, often called quarry or rock dust areby products of the production of concrete aggregatesby crushing of rocks.The addition of quarry dust to normal concretemixes is limited because of its high fineness. Theaddition of quarry dust to fresh concrete increases thewater demand and consequently the cement contentfor given workability and strength requirement
  2. 2. Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: 2248-9622 www.ijera.comVol. 3, Issue 3, May-Jun 2013, pp.1497-15001498 | P a g ehowever potential benefits to using quarry dust is thecost having, because the material cost variesdepending on the source.II. Experimental Investigation2.1 Materials2.1.1 CementIn this experimental study, Ordinary PortlandCement 53 grade, conforming to IS: 8112-1989 wasused. The different laboratory tests were conductedon cement to determine the physical and mechanicalproperties of the cement used are shown in Table 1.Table 1: Properties of CementPhysical Property ResultFineness (retained on 90- 5%Normal Consistency 29%Vicat initial setting time (minutes) 75 min.Vicat final setting time (minutes) 482 min.Specific gravity 3.12Compressive strength at 7-days 37.33 MpaCompressive strength at 28-days 53.64 Mpa2.1.2 AggregatesLocally available natural sand with 4.75 mmmaximum size confirming to class II- IS 383 wasused as fine aggregate, having specific gravity,fineness modulus and unit weight as given in Table 3and crushed stone with 16mm maximum size havingspecific gravity, fineness modulus and unit weight asgiven in Table 3 was used as coarse aggregate. Table2 gives the physical properties of the coarse and fineaggregates.Table 2: Physical Properties of Coarse and FineAggregatesPropertyFineAggregateCoarseAggregateSpecific Gravity 2.5 2.85Fineness Modulus 2.8 7.44Surface Texture Smooth ---Particle shape Rounded Angular2.1.3 WaterOrdinary potable water available in the laboratoryhas been used.2.1.4 Chemical AdmixturesSuper plasticizers or high range water reducingadmixtures are an essential component of SCC. It isused to provide necessary workability. Glanium B233(modified P.C. based) was obtained from BASF IndiaLimited, Mumbai.2.1.5 Quarry DustQuarry dust is used as an inert powder. It hasbeen obtained from stone crusher; Quarry dust ofspecific gravity 2.5 passing through 90µ sieve isused. Chemical composition of Quarry dust is givenin table 3.Table 3: Chemical Composition of Quarry DustSr. No. Constituents Quantity (%)1. SiO2 70.742. Al2O3 20.673. Fe2O3 2.884. TiO2 0.335. Na2O 0.116. K2O 0.197. MgO 1.578. M2O2 0.019. CaO 0.210. ZnO 0.0111. Pb 625 ppm12. Cr 125 ppm13. LOI 0.722.1.6 Silica FumeSilica fume imparts very good improvement torheological, mechanical and chemical properties. Itimproves the durability of the concrete by reinforcingthe microstructure through filler effect and reducessegregation and bleeding. It also helps in achievinghigh early strength. Silica fume of specific gravity2.2 is used in this study. Chemical composition ofsilica fume is given in table 4. Silica fume wasobtained form ELKEM materials, Mumbai.Table 4: Chemical Composition of Silica FumeSr. No. Constituents Quantity (%)1. Sio2 91.032. Al2O3 0.393. Fe2O3 2.114. CaO 1.55. LOI 4.052.2 Mix ProportionThe mix proportion was done based on themethod proposed by Nan-Su et al. [4]. The mixdesigns were carried out for concrete grades 25, 35,45. This method was preferred as it has the advantageof considering the strengths of the SCC mix.The details of mixes are given in table 5. All theingredients were first mixed in dry condition. Then70% of calculated amount of water was added to thedry mix and mixed thoroughly. Then 30% of waterwas mixed with the super plasticizer and added in themix.Then the mix was checked for self compactingability by slump flow test, v-funnel test and L-boxtest.
  3. 3. Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: 2248-9622 www.ijera.comVol. 3, Issue 3, May-Jun 2013, pp.1497-15001499 | P a g eTable 5: Mixture proportion for 1m3of SCCSelf Compact ability Tests on SCC MixesVarious tests were conducted on the trial mixes tocheck for their acceptance and self compact abilityproperties. The tests included flow test and V-funneltests for checking the filling ability and L-box test forpassing ability. The mixes were checked for the SCCacceptance criteria given in table no. 6.Table No. 6 SCC Acceptance CriteriaMethod Properties Range ofvaluesSlump flow Filling ability 650-800mmV-funnel Viscosity 6-12 sec.L-box Passing ability 0.8-1.0Table 7: SCC Test Results of SCC MixesMixCodeFlow(mm)V-funneltime(s)L-box(h2/h1)Segregation Remark660 8.6 0.90 No SCC680 8.9 0.88 No SCC710 9.4 0.97 No SCC720 8.8 0.95 No SCC705 9.3 0.93 No SCC690 9.5 0.90 No SCCThe result of the self compact ability tests aretabulated in table 7. All the mixes satisfied theacceptance criteria for self compacting concrete.Hence these mixes were chosen as the successfulmixes. The cube specimens of size 150 x 150 x 150mm were cast for the successful mixes and weretested for the 7-day 28-day compressive strengths.Also cylindrical specimens of size 300mm height and150mm diameter were cast and tested for 28-dayssplit tensile strength.3. RESULT AND DISCUSSION3.1 HARDENED PROPERTIES OF SCC MIXESCompressive Strength of SCC MixesTable 9 and fig. no. 8 gives the cube compressivestrength of the mixes. It can be seen that strengthincreases with decreasing Silica Fume and QuarryDust content. Four standard cubes each for variousmixes were tested to determine 7 days and 28 dayscompressive strength, compressive strength increasedwith decrease in W/C ratio.The strength of SCC with silica fume and SCCwith quarry dust ranges from 45 MPa to 62 MPa and31 MPa to 52 MPa respectively, averagecompressive strength of SCC having silica fume at28-days compared to SCC having quarry dust wasincreased by 25.51%. Depending upon the mineraladmixture, curing condition, the result indicates thatthe Mineral admixture addition helps in gain ofcompressive strength than that of Quarry dust. Thecompressive strength of SCC containing silica fumewas greater than that of SCC containing Quarry dust.Split Tensile StrengthThe split tensile strength result shown in table 9and fig. no. 9. Two standard cylinder specimens eachfor various mixes were tested to determine 7-daysand 28-days split tensile strength. Split tensilestrength shows the same trend as compressivestrength, increased with decrease in W/C ratio.Split tensile strength of SCC containing SilicaFume & SCC having quarry dust ranges from 4.3MPa to 6.72 MPa and 3.5 MPa to 5.29 MParespectively. Average split tensile strength of SCChaving silica fume at 28-days compared to SCChaving quarry dust was increased by 18.06%.Silica fume shows the better result in strengthproperties than quarry dust.Table 9: Harden PropertiesMixCodeW/CCompressiveStrength (MPa)Split TensileStrength(MPa)7 Days28Days7Days28DaysαS1 0.45 27.33 45.11 3.07 4.3αS2 0.40 32.29 57.11 4.87 5.58αS3 0.35 44.66 61.12 5.86 6.72αD1 0.45 22.52 31.5 2.1 3.5αD2 0.40 29.4 39.9 3.4 4.78αD3 0.35 37 51.2 4.2 5.29
  4. 4. Ms. Priyanka P. Naik, Prof. M. R. Vyawahare / International Journal of Engineering Researchand Applications (IJERA) ISSN: 2248-9622 www.ijera.comVol. 3, Issue 3, May-Jun 2013, pp.1497-15001500 | P a g eFig. 8: Result of Compressive strengthFig. 9: Result of Split Tensile StrengthIII. ConclusionIn the present comparative study of selfcompacting concrete using Silica Fume and QuarryDust following conclusions were arrived from theexperimental investigation. Because of extremefineness and very high amorphous silicon dioxidecontent, silica fume is a very reactive pozzolanicmaterial. Hence SCC with silica fume shows thegood result in both tension and compression.1. Silica fume was observed to improve themechanical properties of SCC because of thepozzolanic action of silica fume.2. Average compressive strength of SCC havingsilica fume at 28-days compared to SCC havingquarry dust was increased by 25.51%.3. Average split tensile strength of SCC havingsilica fume at 28-days compared to SCC havingquarry dust was increased by 18.06%.4. It has been indicated that SCC having SilicaFume have higher compressive strength and splittensile than those of SCC having inert powder asadditional filler i.e. quarry dust. The silica fumehas contributed to large extent in development ofstrength.5. As the water cement ratio reduces and cementscontent increases, strength increases in SCCmade with silica fume and SCC made withquarry dust.References[1] The European Guidelines for SCC, May 2005.[2] Zoran Grdic, Iva Despotovic, Gordana ToplicicCurcic, Properties of Self CompactabilityConcrete with Different types of Additives,FACTA University, Architecture and CivilEngineering, Vol. 6, 173-177, No. 2, 2008.[3] Hajime Okamura and Masahiro Ouchi, “SelfCompacting Concrete”, Journals of AdvancedConcrete Technologies, Vol. 1, No. 1 April2003, pp. 5-15.[4] Nans, Kung-chung HSU, His Wen Chai, “ASimple Mix Design, Method For SelfCompacting Concrete (2001) 1799 – 1807.[5] Pratibha Aggarwalh Yogeh Aggarwal, S. M.Gupta, R. Siddique, “Properties of SelfCompacting Concrete – An Overview” 30thConference on Our World In Concrete AndStructures 23-24 August 2005, Singapore.[6] G. Kaur, S. P. Singh And S. K. Kaushik,“Reviewing Some Properties of ConcreteContaining Mineral Admixtures” IndianConcrete Journal July 2012, 35-49.[7] Vilas V. Karjinni, Shrishail B. Anandinni andDada S. Patil, An investigation on thecharacteristic properties of high performanceSCC with mineral admixtures. The IndianConcrete Journal, 2009, 15-19.[8] M. Rame Gowda, Mattur C. Narasimhan andKarisiddappa, Strength behavior of self-compacting concrete mixes using localmaterials, The Indian concrete journal, July2012, 54-60.[9] C. Selvamony, M. S. Ravikumar, S. U. Kannanand S. Basil Gnanappa, Investigations on self-compacted self-curing concrete using limestonepowder and clinkers, APRN journal ofengineering and applied sciences, vol. 5, March2010, 01-06.[10] A. Navaneethakrishnan, V. M. Shanthi,Experimental study of self-compacting concrete(SCC) using silica fume, International journalof emerging trends in engineering anddevelopment, vol. 4, May 2012, 475-482.[11] S. Bhaskar, Ravindra Gettu, B. H. Bharatkumarand M.Neelamegam, Strength, bond anddurability related properties of concretes withmineral admixtures, The Indian concretejournal, February 2012, 09-15.[12] M.S. Shetty, “Concrete Technology”, S. Chand.[13] www.microsilicachina.com

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