TY - GEN
T1 - Effect of lightweight aggregate with different moisture on autogenous shrinkage and stress under partially restrained condition
AU - Dong, Shuhui
AU - Zhang, Baosheng
AU - Ge, Yong
AU - Yuan, Jie
PY - 2009
Y1 - 2009
N2 - A study of the efficiency of lightweight aggregate (LWA) in controlling restrained shrinkage cracking of low water-to-cement ratio concrete is presented. Free autogenous shrinkage test of concrete specimens and restrained test with ASTM C 1581-04 were performed. Autogenous shrinkage and restrained stress of concrete with different moisture content (0%, 20%, 40%, 60%, and 100%) LWA at the same water-to-cement ratio of 0.30 were investigated by experiments that provided date on free autogenous shrinkage and restrained shrinkage. The results showed that the pre-wetting LWA effectively reduced autogenous shrinkage, restrained shrinkage and tensile stress in the restrained conditions. Also, it was found that the shrinkage stress was relaxed more and more with degree of saturation of LWA increasing, and can be mitigated by 45.7% in the concrete with the saturated LWA.
AB - A study of the efficiency of lightweight aggregate (LWA) in controlling restrained shrinkage cracking of low water-to-cement ratio concrete is presented. Free autogenous shrinkage test of concrete specimens and restrained test with ASTM C 1581-04 were performed. Autogenous shrinkage and restrained stress of concrete with different moisture content (0%, 20%, 40%, 60%, and 100%) LWA at the same water-to-cement ratio of 0.30 were investigated by experiments that provided date on free autogenous shrinkage and restrained shrinkage. The results showed that the pre-wetting LWA effectively reduced autogenous shrinkage, restrained shrinkage and tensile stress in the restrained conditions. Also, it was found that the shrinkage stress was relaxed more and more with degree of saturation of LWA increasing, and can be mitigated by 45.7% in the concrete with the saturated LWA.
KW - Autogenous shrinkage
KW - Concrete
KW - Lightweight aggregate
KW - Restrained shrinkage
KW - Tensile stress
UR - https://www.scopus.com/pages/publications/71049122832
U2 - 10.1061/41064(358)389
DO - 10.1061/41064(358)389
M3 - 会议稿件
AN - SCOPUS:71049122832
SN - 9780784410646
T3 - Proceedings of the 9th International Conference of Chinese Transportation Professionals, ICCTP 2009: Critical Issues in Transportation System Planning, Development, and Management
SP - 2779
EP - 2785
BT - Proceedings of the 9th International Conference of Chinese Transportation Professionals, ICCTP 2009
PB - ASCE - American Society of Civil Engineers
T2 - 9th International Conference of Chinese Transportation Professionals, ICCTP 2009: Critical Issues in Transportation System Planning, Development, and Management
Y2 - 5 August 2009 through 9 August 2009
ER -