This test method covers the laboratory determination of the age at cracking and induced tensile stress characteristics of mortar and concrete specimens under restrained shrinkage. The procedure can be used to determine the effects of variations in the proportions and material properties of mortar or concrete on cracking due to both drying shrinkage and deformations caused by autogenous shrinkage and heat of hydration. This test method is not intended for expansive materials. The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
KeywordsAutogenous Shrinkage - Concrete - Cracking - Cracks and Cracking - Deformation - Heat of Hydration - Mechanical Test - Mortars - Physical Properties - Restrained Shrinkage - Shrinkage - Tensile Stress
ICS CODE91.100.30 (Concrete and concrete products)
UNSPSC CODE30111500 (Concrete and mortars)
ASTM C1581 / C1581M-18a, Standard Test Method for Determining Age at Cracking and Induced Tensile Stress Characteristics of Mortar and Concrete under Restrained Shrinkage, ASTM International, West Conshohocken, PA, 2018, www.astm.org