January 1980 Table of Contents

The Durability of Concrete

Of all the innumerable positive attributes of concrete, durability is probably one of the most important. Read more

Record-Setting Concrete Projects

Concrete projects where former limits of achievement have been exceeded naturally are newsworthy and a source of pride. Read more

The Many Applications of Concrete

Not surprisingly, designers and artists have discovered that concrete is a living material that responds to their hands and then goes on from this responsive plastic state to become a hardened, permanent, complete expression of the artist's intent. Read more

The Many Shapes of Concrete

The truly valid criteria for determining the success of a building design are how safely, beautifully and economically it provides the requested environment. Read more

The Many Faces of Concrete

Untold thousands of finishes can be imparted to concrete surfaces through material grading and selection, surface finishing techniques in the case of concrete flatwork, the use of special forming materials or textured form liners, exposure of surface aggregates, numerous techniques for rendering and abrading hardened surfaces, and through the utilization of integral colors, dry shakes, and paints and stains. Read more

Features The Many Methods of Concrete Construction

The methods of using the great variety of forms available are as ingenious as the forms themselves and they involve widely varying techniques. Read more

The Repairability of Concrete

All materials deteriorate in some measure from the ravages of time, the effects of wear and tear, and exposure to the elements or chemicals. Read more

Concrete: an Unlimited Choice of Properties

Concrete construction has benefited in many ways from the predictable set control, greater uniformity, higher strengths and other controls of concrete performance now possible. Read more

The Concrete Industry: on the Grow

Trying to describe an industry as diverse and multifaceted as the concrete industry is like trying to describe the role that electricity has played in modern society. Read more

Concrete: the Energy Saving Material

As more is learned about energy conservation in buildings, one fact stands out: Concrete and energy conservation go hand in hand Read more

The Concrete Advantage

Concrete possesses such a multitude of outstandingly useful properties that a fair number of them are totally unrecognized and others are rarely mentioned. Read more

Problem Clinic Rebars Need Care During Patching

In patching work on bridge decks what should be done about rebars that are cut, bent, damaged by the work in progress, or corroded? Read more

Problem Clinic Low-Flexibility Sealants for Floors

Many years ago I started filling industrial floor joints with lead strips, which seemed better than anything else available. In the past several years I've used mostly epoxies, because they bond to the sides of the joints. But they aren't the best answer, either, because they frequently cause a crack in the concrete parallel to the joint. What's the latest material, if any, that's better? Read more

Problem Clinic Heat and Stir to Dissolve

Item 26 in the March 1977 issue, page 132, talked about removing oil stains from concrete. It advocated using 1 pound trisodium phosphate per gallon of water and mixed with whiting to make a paste. Did you mean anhydrous trisodium phosphate or crystalline trisodium phosphate? Read more

Problem Clinic Insulation Under Parking Deck

We have a job building a parking deck above habitable space at a hospital. The deck will slope to roof drains and must have a U-factor of 0.1. We have been advised by a manufacturer of vermiculite that vermiculite concrete would not be suitable because the thickness required would be too great and also because it is too compressible. What else could be used? Read more

Problem Clinic Predicting Rate of Sulfate Attack

When sulfate concentration is given in percent of soil or parts per million of water, is there a way of converting this value to pH so that the value could be used to predict potential sulfate attack on concrete? Read more

Problem Clinic Unbonded Topping for Plywood

A structurally sound plywood roof deck, about 15 feet wide and 60 feet long, dead flat, forms a walking plane and terrace for housing units above. Read more

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