December 2004 Table of Contents

Features Curing Concrete in Hot Weather

I’ve recently moved my contracting business to the South. Concrete finishers here tell me that a slab poured outside on a hot day won’t cure properly unless it’s kept wet. They do this by having someone periodically spray it with water from a hose or by setting up a lawn sprinkler, once the concrete has set up enough that the top layer won’t wash away. Is this really necessary? Would adding a set retarder to the mix accomplish the same thing? Read more

Problem Clinic Improving Traction

The concrete floor in my horse barn has an ulra-smooth finish. I’m concerned that with horseshoes on their hooves, the horses may slip and fall. Any ideas on how to improve the traction? Read more

Problem Clinic Radiant Tubes and Laser Screeds

What are the precautions to take when using a laser screed on slabs with radiant heating tubing in them? Read more

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