October 1996 Table of Contents

Problem Clinic Causes for Slab Discoloration

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

Problem Clinic How to Splice PVC Waterstops

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

Problem Clinic Effect of Hard Water on Concrete

Can using hard water as mixing water affect concrete properties? Read more

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