Lightweight Concrete Durability
Large scale concrete structures has brought about a re-examination of the durability characteristics of structural lightweight aggregate concrete. Extensive laboratory freeze-thaw testing programs have demonstrated that structural lightweight aggregates, in combination with high quality pastes containing the proper spacing and amounts of air, and permitted a drying period of at least 14 days prior to first freezing, will produce excellent laboratory tested concrete durability. Investigations of a number of in-service lightweight concrete structures in marine environments for up to 60 years verify the laboratory indications of good weathering resistance and suggest the following criteria for future applications:
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