Published: Jan 1956
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Soundness may be defined as the ability of an aggregate to resist excessively large or permanent changes in volume when subjected to destructive agencies, particularly freezing and thawing, heating and cooling, or wetting and drying. Volume changes of unsound aggregate particles may result in deterioration of concrete, ranging from localized pitting and scaling to extensive cracking and deep-seated disintegration. The former is usually of little structural significance but may be detrimental to the appearance of the structure; the latter may be sufficient to cause structural failure of the concrete.
Assistant Director of Engineering, National Sand and Gravel Assn. and the National Ready Mixed Concrete Assn., Washington, D. C.
Paper ID: STP39446S