June 1979 Table of Contents

Powered Screeds Make Industrial Floor Construction Easier

As our company grew, we found it necessary to consider the use of powered vibratory screeds to handle large industrial floor projects efficiently and profitably. Read more

Plain concrete usually provides adequate Deadening of Air-Borne Sound in Partition Walls

Concrete is an excellent material for deadening air-borne sound transmission through building partitions. Read more

The use of water-reducing admixtures in Customizing Concrete Performance to Jobsite Needs

In modern concreting, admixtures have become the essential fifth ingredient that offers extra control of many aspects of concrete performance. Read more

Pumping Concrete Right Where You Want It

Being able to put fresh concrete where you want it when you want it, abruptly changing the length or direction of flow, is often critical in concrete pumping operations. Read more

Problem Clinic Preventing Lumps in Bagged Cement

We generally keep a supply of bagged cement on hand in our storage shed, and sometimes we hold some of this on the jobsite for extended periods of time. Although the bags are usually covered with a tarpaulin or plastic sheet, even when we store them indoors, we frequently find that after a few months the cement contains lumps and sometimes it is even hard. Is this to be expected with all brands, and if so, is there any way to prevent it? Read more

Problem Clinic Aid to Estimating Rebar Requirements

Where can I get some guidance on estimating reinforcing steel? Sometimes the design details don't make it clear exactly what is required. Read more

Problem Clinic Shotcrete Repair in Sea Water in Cold Climate

We are considering shotcrete for repair of a badly deteriorated dock face exposed to salt tidal waters in a cold climate where freeze-thaw is a major consideration. Read more

Problem Clinic Repair at High Temperature

We desire to refinish overhead exposed concrete spans in concrete which is at a temperature of 220 degrees F and cannot be cooled. Spalls vary in diameter from roughly 1 inch to 1 foot and resemble ordinary popouts. Read more

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