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coarse aggregate in slab-on-grade

coarse aggregate in slab-on-grade

coarse aggregate in slab-on-grade

(OP)
For 8" and 10" thick interior concrete slabs-on-grade, I am specifying a maximum nominal coarse aggregate size of 1.5".  What percentage should be retained on the 1" sieve?

RE: coarse aggregate in slab-on-grade

#57 Gradation
% Passing 1 1/2"......100%
% Passing 1".........95-100%

RE: coarse aggregate in slab-on-grade

In a January 2000 article of Concrete International there is a very good article called "24 Steps to Successful Floor Slabs"
Amoung other things, a 1 1/2" coarse aggregate with a 50 to 50 ratio of 3/8" aggregate is recommended.

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