June 1961 Table of Contents

Features Aggregate size

Does the use of larger coarse aggregate in a mix tend to produce concrete of higher strength? Read more

Problem Clinic Retarder Controls Bond

Is it practical to use a retarder to obtain selective bond between prestressing strands and the concrete in a beam? Read more

Problem Clinic Autogenous Healing

What conditions seem to favor the so-called autogenous healing of fractures in concrete? Read more

Problem Clinic Concrete Temperature

Can concrete temperatures be calculated in advance if the temperatures of the various materials are known? Read more

Problem Clinic Flexural Strength

Is flexural strength testing a more reliable basis for accepting or rejecting concrete than compression testing? Read more

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