PPT ON FLY ASH CONCRETE MIX DESIGN

CLICK HERE TO DOWNLOAD PPT ON FLY ASH CONCRETE MIX DESIGN

FLY ASH CONCRETE MIX DESIGN  Presentation Transcript

1.FLY ASH CONCRETE MIX DESIGN

2.Target 28-Day Compressive Strength of Concrete

3.CHARACTERISTICS OF MATERIALS

4.AGGREGATES

5.SUGGESTED STANDARD DEVIATION VALUES

6.WATER CEMENTITIOUS MATERIALS RATIO

7.WORKABILITY OF CONCRETE

8.ESTIMATION OF MIXING WATER AND SAND CONTENT
(For sand grading: Zone II & crushed rock coarse aggregate**)

9.FINE AGGREGATE GRADINGS

10.FLY ASH CONTENT

11.TYPICAL GRADING OF CRUSHED SAND

12.DURABILITY REQUIREMENT

13.COARSE AGGREGATE GRADING (COMBINED)

14.EXAMPLES ON COMBINED GRADING

15.DATA REQUIRED

16.Grade of concrete
Desired workability of concrete (slump, mm)
Durability requirement – exposure condition

28-day compressive strength of cement
Quality of superplasticiser (% water-reduction)
Data on Fly Ash:
Fineness
Lime reactivity
Loss on ignition, %
Gradings of sand, coarse aggregate (different size fractions)
Sp. gr. of sand, coarse aggregate and fly ash
Water absorption (%) of sand and coarse aggregate