Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4918128 | Construction and Building Materials | 2017 | 13 Pages |
Abstract
Experimental studies are presented on the influence of three types of pre-wetted lightweight aggregates (PLWA), through their volume fractions and moisture content, on the compressive strength and shrinkage of concrete and expansive concrete. Via integrated thermal analysis, the hydration degree during 7Â d-28Â d was found to be increased by the internal curing. The use of PLWA increased the shrinkage at 240Â d due to the significant increase in the shrinkage deformation during the age of 28Â d-90Â d caused by internal curing. The results also suggest that incorporation of 10-Mas. % expansive agent is useful to diminish the shrinkage, especially by its combined use with PLWA. Predictive models for the compressive strength and shrinkage of concrete containing PLWA were discussed and a unified model predicting the compressive strength and shrinkage of concrete containing PLWA was suggested.
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
X.F. Wang, C. Fang, W.Q. Kuang, D.W. Li, N.X. Han, F. Xing,