Shrinkage deformation is a driving force to stress generation and cracking in early concrete,whereas the occurrence of cracking depends on the restraint condition. Furthermore,the degree of restraint greatly affects the mechanical properties of early concrete. The developments of restraining stress,creep behavior and elastic modulus in concrete were measured under different restraint degrees by uniax ial restrained shrinkage test,and the influence of restraint degree on evaluation of cracking sensitivity in early concrete was also discussed.
Post asy F S,Tanabe T,Laube M. Assessment of External RestraintPPSpringenschmid R. Prevent ion of Thermal Cracking Concrete at EarlyAges. RILEM Report 15. London: EFN Spon,1998: 149-177
Salah A Altoubat,David A. Lange,Creep,Shrinkage,and Cracking ofRestrained Concrete at Early Age. ACI Mat erials Journal,2001,98(4):323-331