Your SlideShare is downloading. ×
My ppt
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

My ppt

2,250
views

Published on

Published in: Business, Technology

1 Comment
2 Likes
Statistics
Notes
No Downloads
Views
Total Views
2,250
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
193
Comments
1
Likes
2
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. A SEMINAR ON “UTILIZATION OF INDUSTRIAL WASTE IN SELF COMPACTING CONCRETE” UNDER THE GUIDENCE OF PRESENTED BY: PROF C. G. KONAPURE SUHAIL .H .SHAIKH BE -CIVIL WALCHAND INSTITUTE OF TECHNOLOGY SOLAPUR
  • 2. WHAT IS MEAN BY CONCRETE ? “Concrete is a composite construction material composed primarily of aggregate, cement, and water”.  The aggregate is generally a coarse gravel or crushed rocks such as limestone, or granite, along with a fine aggregate such as sand.  Concrete has relatively high compressive strength, but much lower tensile strength. 2
  • 3. SELF COMPACTING CONCRETE : “Self compacting Concrete is highly engineered concrete with much higher fluidity without segregation and is capable of filling every corner of form work under its self weight only”.  It eliminates the need of vibration either internal or external for its compaction.  It reduces the deterioration of concrete quality due to lack of skilled labors. 3
  • 4. INTRODUCTION TO SELF COMPACTING CONCRETE:  It was first devloped in japan in late 80’s to increase the concrete quality.  It is an innovative concrete which flows under its own weight.  Construction material consists of cement and Aggregates only.  It eliminates the vibration either internal or external. 4
  • 5. TYPES OF SELF COMPACTING CONCRETE  Powder type of self compacting concrete.  Viscosity agent type self compacting concrete.  combination type self compacting concrete. 5
  • 6. ADVANTAGES OF SCC  Beneficial in structures where casting are difficult due to congested reinforcement.  shows good filling ability.  very well suited for special and technically demanding structures such as tunnel linings.  Reduction in wear and tear of forms, therefore, it extends the service life of forms.  Reduction in the number of worker. 6
  • 7. 7 Fig 1:Congested reinforcement Fig 2:Tunnel reinforcement
  • 8. DISADVANTAGES OF SCC:  The production of SCC places more stringent requirements on the selection of materials in comparison with conventional concrete.  An uncontrolled variation of even 1% moisture content in the fine aggregate will have a much bigger impact on the. Property of SCC.  The development of a SCC requires a large number of a trial batches. 8
  • 9. INGRADIENTS USED: Cement:-  Generally Portland cement is used. Aggregates:-  Aggregate of size 10 mm is desirable for structures having congested reinforcement.  Aggregates should be cubical or rounded.  Particles smaller than 0.125mm i.e. 125 micron size are considered as FINES which contribute to the powder content. 9
  • 10. Mixing water: -  Ordinary potable water of normally pH 7 is used for mixing and curing the concrete specimen. Admixtures for SCC:- There are two types of admixture normally added in scc.  chemical admixtures  Mineral admixtures 10
  • 11.  Chemical Admixtures:- These are essential component of scc used to provide necessary workability, freezing resistance. e.g; Glenium TM SKY 784 Mineral Admixtures:- These improves quality and durability of SCC. e.g; fly ash, red mud & foundry sand. 11
  • 12. HOW TO CHECK SUITABILITY? There are many new tests: V-funnel, L-box, U-box,, Slump Flow and J-ring. While several of these may be used in mix development, only the some will find site use. Slump flow test:  It used to find flowing Ability of concrete in absence of obstructions.  It was first developed in japan.  The diameter of concrete circle is the measure of filling ability of concrete. 12Fig 3: slump flow test
  • 13. 13 Fig 4: U-box test Fig 5:V funnel test Fig 6: J- ring test Fig 7: L-box test
  • 14. WHAT IS RED MUD?  Red mud is the iron rich residue from the digestion of bauxite.  It is one of the major solid waste coming from Bayer process of alumina production.  It is a finely powdered mud. It adversely effects the air, land & water environment of surrounding area.  At present about 60 million tones of red mud is generated annually worldwide which is not being disposed or recycled satisfactorily. 14 fig 3:Red mud dumping
  • 15. WHAT IS FOUNDRY SAND?  Foundry sand consists of clean, uniformly sized, high quality silica sand that is bonded to form molds for ferrous and nonferrous metal castings.  Angle of shear resistance of foundary sand is in the range of 33 to 40 degree as compared to conventional sand.  The automotive industry and its parts suppliers are the major generators of foundry sand. 15 Fig4 : foundry waste sand
  • 16. NEED FOR SCC  Foundry sand and red mud has pozzolonic properties hence increases the binding properties .  Red mud has higher compressive strength ,therefore it can be used to prepare lighter concrete.  Foundry waste sand basically contains uniformly sized, and which having one or more organic binder  It gives better strength at the same time it reduces the cost problems. 16
  • 17.  Foundry waste sand has low absorption and non plastic nature.  shear resistance of foundary sand is in the range of 33 to 40 degree as compared to conventional sand. 17
  • 18. WHAT’S NEW?  Industrial waste (i.e.: red mud ,foundry waste sand) is used for preparation of SCC.  Instead of cement this industrial waste are used in different percentage. Red mud:1%, 2%, 3% upto 8%. foundry waste sand: 2%, 4% upto 10%. Aim of experimentation: The main aim of this experimentation is to find out the effect of addition of red mud, which is a waste product from the aluminium industries, and foundry waste sand, which is a waste product from foundry, on the properties of self compacting concrete containing two admixtures. 18
  • 19. MATERIAL USED:  The specific gravity of sand was found to be 2.55 and was Zone II sand.  The specific gravity of coarse aggregates used was found to be 2.61.  The coarse aggregates were 12mm and down size.  A water/binder ratio 0.31.  The flyash/cement ratio used was 1:3.5.  In addition to this red mud and foundry sand is used. 19
  • 20. WHAT IS THE TEST RESULTS? FOR SELF COMPACTING CONCRETE  Compressive strength= 42.94MPa  Tensile strength= 3.77MPa 20 Percentage addition of red mud Compressive strength (MPa) Tensile strength (MPa) 1 41.18 4.00 2 44.29 4.62 3 42.66 3.34 4 40.29 3.25 5 37.62 3.10 6 35.11 2.87 7 34.51 2.50 8 33.62 2.16
  • 21. Percentage addition of foundry waste sand Compressive strength (MPa) Tensile strength (MPa) 2 42.03 3.86 4 40.15 3.25 6 37.70 2.73 8 35.68 1.93 21
  • 22. SUGGESTED VALUE OF ACCEPTANCE FOR DIFFERENT TEST METHODS OF SCC. SR. NO Methods Unit Typical range of values - - - Minimum Maximum 1 J-ring mm 0 10 2 v-funnel sec 6 12 3 Time increase, V-funnel at sec 0 3 4 U-box h2-h1 0 30 5 Slump flow by Abrams mm 600 800 6 T50cm slump flow sec 2 5 7 L-box (h2/h1) 0.8 1 22
  • 23. Percent- age of red mud Slum- p flow (mm) Slump test (sec) V – funnel flow time sec U – box Filling height H1-H2 (mm) L –box - - - - - H2/H1 (T20) sec (T40) Sec 1 700 4.7 24.61 0 0.88 6.30 10.2 2 720 4.3 18.70 0 0.96 3.80 6.5 3 710 4.6 32.80 5 0.85 4.60 8.8 4 680 5.3 34.60 5 0.83 5.20 9.2 5 650 5.8 36.80 10 0.78 5.50 11.2 6 630 8.6 42 10 0.60 6.30 13.4 7 590 12.4 52.80 15 0.39 7.20 15.6 8 560 13.2 66.54 20 0.16 9.40 25.2 23
  • 24. Percentag e of foundry waste sand Slump flow (mm) Slump test (sec) V – funnel flow time U – box Filling height H1-H2 (mm) L –box - - - - - H2/H1 (T20) sec (T40) sec 2 730 4.1 18.10 0 0.92 3.98 7.68 4 680 5.3 33.00 10 0.92 5.32 9.98 6 610 9.7 45.30 15 0.85 5.80 11.68 8 530 19.1 79.80 20 0.43 8.98 17.92 24
  • 25. REFRENCES  OKAMURA, H (1997), "Self-Compacting High Performance concrete", Concrete International, Vol. 19, No. 7, pp-50-54.  OKAMURA. H. and OUCHI. M, "Self Compacting Concrete - Development, present use and future", Ist International RILEM Symposium on Self Compacting Concrete, 1999, Concrete International pg 3-1  Cristian Druta ,August 2003 “Tensile strength and bonding characteristics of self-compacting concrete”.  WEBSITES: www.acclimited.com www.pozzocrete.co.in www.hindalco.com www.redmudproject.or 25 FIBREREINFORCEDCONCRETE
  • 26. THANK YOU
  • 27. ANY QUESTIONS ? 27