5Jensen A D,Chatterji S.State of the art report on micro-cracking and lifetime of concrete-partⅠ[J].Materials and Structures, 1996,29(1) :3-8.
6Bentz D P,Geiker M R,Hansen K K.Shrinkage reducing admixtures and early-age desiccation in cement pastes and mortars[J].Cement and Concrete Research, 2001,31 (7) : 1075-1085.