Construction methods and concrete properties affect the bond strength between concrete and reinforcing steel. Research on the effects of concrete slump, consolidation practice, bar position, concrete cover, and bar spacing is summarized. The research show

The use of silica fume in concrete has attracted a great deal of interest in the past several years. For those individuals not directly involved with silica fume, it may appear that the interest has all been from a research point of view. This is not corr

The organization and procedures used in the quality production of about 8 million cubic yards of concrete of all kinds for the California Water Project are described. These included design aspects, specifications, the concrete laboratory, and construction

ACI and ASTM standards require an overdesign factor to be added to the design strength to account for variability in the mix. A high variability necessitates an average strength considerably higher than the design strength. There are two key problems wit

The use of high-strength concrete has been growing in Norway in the last 15 to 20 years. The paper gives a summary of this development, discusses the most important factors that influence strength, and provides examples of field application. Requirements