April 1969 Table of Contents

Problem Clinic Black Concrete Powders

I poured a concrete drive, dusted and floated in black Colorundum, and sprayed with "60 D" curing compound. There were about five pours involved to complete the driveway. Some pours were rained on during the night after the pouring. In varying degrees, wh Read more

Problem Clinic Floor in Damp Basement

I have a particular problem with a damp basement in a new home. The floor seems to change color and darken in the center of the room and toward the walls. Read more

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