I'm a perfectionist when it comes to concrete finishing. I want to know why discoloration occurs in some instances on recently placed slabs. The discolorations are usually light and dark patches. I know that concrete slabs eventually bleach out with expos Read more
We sometimes have problems with water leakage through construction joints containing polyvinyl-chloride (PVC) waterstops. We believe the leaks are occurring at splices in the waterstop. Is there a good reference on how to splice PVC waterstops so they won Read more
Can using hard water as mixing water affect concrete properties? Read more