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ASTM C109 vs. C780
Over my young career (3 years) I've always tested mortar following C109, which included placing mortar cubes in a water bath. Recently, we had some low breaks on a project. The mortar supplier said that C109 was the wrong procedure and that C780 should be followed instead, with the most...- gbkxbb
- Thread
- Replies: 3
- Forum: Concrete Engineering general discussion
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Concrete Cores vs. Concrete Cylinders
Hey all, new to the forums. I've got a job that we are testing some 7000 psi concrete for. I've had a few pours where the concrete cylinder breaks came back lower than the concrete core breaks. On the range of 1000-2500 psi, give or take. I'm trying to figure out why. I would think I could...- gbkxbb
- Thread
- Replies: 1
- Forum: Concrete Engineering general discussion
