Thursday, March 8, 2012

21-Day Concrete Failing at 7100psi


This mix is designed for 8000 psi at 28 days. The water to cement ratio was 0.35 and provided a 6.5" slump. This was 21-day test cylinder of concrete failing at 7100 PSI.

The mix consisted of:
-Portland cement
-Fly ash
-Silica fume
-3/8" pea gravel
-Type F water reducer

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