January 1981 Table of Contents

Features Identifying Concrete Deterioration

A crack in concrete could originate from faulty subgrade, incorrectly placed reinforcements, alkali-aggregate reaction, poor jointing, overloading or any of a score of other reasons. Read more

Features Industrial Plants Beginning to Tilt Up All Over the Nation

There aren't any statistics available that report how many industrial plants are being built by tilt-up construction but it is fair to say that the number is growing. Read more

Features Concrete in Industry

Almost without exception the complex tools, machines and vehicles of our modern industrial production system rest upon, move on and are sheltered by concrete. Read more

Features Build It Right and Minimize Costly Repairs

Major concrete repairs can be costly and disruptive, but avoiding repairs can hamper the efficiency of plant operation. Read more

Features Preventive Maintenance

Concrete frequently performs well even when left strictly on its own. Read more

Features Secrets of Lasting Repairs

Like most secrets, the knack of making lasting repairs boils down to an easily comprehended rule: use the appropriate materials the right way and you will get satisfactory results. Read more

Features Basic Concrete Repair

There are firms that specialize in difficult repair work using special materials and procedures; and unless you have unusual expertise in this area, you would be well advised to consider employing their services. Read more

Features Agents That Attack Concrete

Because concrete is widely used for industrial buildings, warehouses, sewage plants, auto repair shops, and other structures that experience intimate contact with corrosive liquids and other aggressive agents, it is called upon to stand up to rigorous conditions. Read more

Features Repair Techniques and Materials

The first step in a successful repair job is to determine the type of concrete deterioration being rectified. Read more

Features Taking the Tedium Out of Cutting

Few people are aware of the extensive capabilities that have been developed for cutting, grinding, grooving, and drilling or flame cutting concrete with no dust and little or no noise. Read more

Problem Clinic Cleanup After a Fire

A fire broke out in our warehouse but it was extinguished within an hour by the fire department. We were glad to learn from investigating engineers that the walls, which are made of tilt-up construction, are still structurally sound although they are cove Read more

Problem Clinic Proper Fabric Designations

While studying a blueprint I discovered that in one place the architect specified 6 x 6--W1.4 x W1.4 mesh to be used in a 4-inch slab. Yet in another place in the same plan the architect called for 6 x 6--10 x 10 mesh. What is the difference between these Read more

Problem Clinic Concrete Contaminated By Urea

We noticed the smell of ammonia in fresh concrete mixes that were made with cement from several cement hauling trucks. In checking back, it appears that when these cement trucks were not being used for hauling cement they had been used for hauling urea fe Read more

Problem Clinic Floor to Resist Molten Metal

We have been engaged to replace a floor in a brass foundry which has disintegrated from spillage of hot molten brass from ladles that move across the floor between the melting furnaces and the casting area. Read more

Problem Clinic Casting Decorative Cube

A shopping center has accepted our bid to precast a5 ½-foot cube with truncated corners. Read more

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