PPT ON USE OF CHEMICAL AND MINERAL ADMIXTURES IN CONCRETE

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Use of Chemical and Mineral Admixtures in Concrete   Presentation Transcript

1.Use of Chemical and Mineral Admixtures  in Concrete

2.CHEMICAL ADMIXTURES          ( IS 9103)
1.Water-reducing admixtures(Plsticizers,
   Superplasticizers)

2.Retarding admixtures

3.Accelerating admixtures

4.Air entraining admixtures

3.MINERAL ADMIXTURES

4.IS 456 Permitted Use of Grade 1 Fly Ash ( As Per IS:3812) As Mineral Admixture, Provided Uniform Blending with Cement Is Ensured

5.CHEMICAL REQUIREMENTS OF FLY ASH

6.TYPICAL CHARACTERISTICS OF A FLY ASH AND A PPC

7.Granulated Blast Furnace Slag
Granulated blast furnace slag shall conform the requirements of IS: 12089
Permitted as mineral admixture in concrete after grinding and provided uniform blending with cement is ensured.

8.Ground Granulated Blast Furnace Slag(g.g.b.s) IS:12089

9.TYPICAL COMPOSITION OF INDIAN SLAG (Bhilai Plant)

10.SILICA FUME

11.RICE HUSK ASH

12.TYPICAL CONCRETE MIX FOR THE SPILLWAY OF A HYDRO-ELECTRIC PROJECT

13.STIPULATION FOR READY MIX CONCRETE

14.OPC+Flyash 72 storey Interfirst plaza, Dallas

15.OPC+Flyash+g.g.b.s 70 storey Landmark Towar,  Yokohama,Japan Height = 296 m

16.Test Result

17.    OPC+Slag+Silica Fume

18.RMC Plant in Montreal

19.Commercially Available Ultra Fine Flyash (U.S.A.)

20.MIX PROPORTION

21.Self Compacting Concrete with Flyash(ITALY)

22.High Workability Self -Compacting    Concrete(Spain)

23.  Silica Fume by product of Silicon or Ferrosilicon Industries

24.Flyash+ Rice Husk Ash

25.Mix Proportion

26.TEST RESULTS

27.U.S Paper