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An Experimental Study on The Differential Dry Shrinkage of Concrete Using Artificial Lightweight Aggregate  

Lee, Chang-soo (서울시립대학교 토목공학과)
Kim, Young-ook (서울시립대학교 토목공학과)
Lin, Yan (서울시립대학교 토목공학과)
Publication Information
Journal of the Society of Disaster Information / v.6, no.1, 2010 , pp. 78-90 More about this Journal
Abstract
Exposure to the outside, the concrete is differential moisture distribution depending on the depth. Such a differential moisture distribution causes the differential drying shrinkage in concrete structures. This thesis is researched to compare the shrinkage of lightweight concrete depending on depth to normal concrete. It is used artificial lightweight aggregate which has 20% of pre-absorb value by lightweight concrete. When water-binder ratio is 30%, average shrinkage of lightweight concrete section decreased than normal concrete, but differential shrinkage of lightweight concrete section increased. However water-binder ratio is 40% and 50% average shrinkage and differential shrinkage of lightweight concrete section decreased than normal concrete.
Keywords
Lightweight Concrete; Pre-absorb; Water-binder Ratio; Differential Shrinkage;
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