Pages

Thursday, March 8, 2012

21-Day Concrete Failing at 7100psi

[youtube=http://www.youtube.com/v/eZIKmoUeptg?version=3]

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
-Water
-Sand
-3/8" pea gravel
-Type F water reducer

No comments: