Concrete: Difference between revisions
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=Concrete Slump Testu= | =Concrete Slump Testu= | ||
Measures inches of collapse, from 0-12", of a wad of concrete in a cone. 12" means it's complete water. | Measures inches of collapse, from 0-12", of a wad of concrete in a cone. 12" means it's complete water. 4" is very stiff. | ||
=Basics= | =Basics= | ||
Revision as of 04:03, 10 December 2020
Formula
- 10% cement, 75% aggregate, 15% water [1]
- 150 kg/m3 of cement - with concrete at 4000 lb/cu yd [2] - was sufficient to get about 6000 psi concrete strength [3]. Does this mean abouut 8% of cement?
- 500 lb per yard of cement in concrete is recommended - read a thesis on it - [4]
Concrete Slump Testu
Measures inches of collapse, from 0-12", of a wad of concrete in a cone. 12" means it's complete water. 4" is very stiff.