Volume 40, Issue 5 (September 2012)
Comparison of Tensile Properties of Strain Hardening Cementitious Composite Cured in Normal and Accelerated Conditions
Strain hardening cementitious composite (SHCC) has shown increasing field applications recently to take advantage of its unique tensile behavior, yet existing tensile test typically requires 28 days normal curing (NC). While this curing method is acceptable for research purpose in laboratory, it is certainly not practical for rapid quality control purpose of SHCC material onsite. Furthermore, Uniaxial Tensile Test (UTT) commonly used for SHCC material is relatively complicated and sometime difficult to implement. This paper proposes to use tensile and/or bending results from accelerated cured (AC) specimens to predict tensile properties of SHCC material under NC. The tensile test result from AC specimens has been validated with that from NC specimens with reasonable agreement. This makes it possible to use AC tensile test result to predict that from NC condition. Additionally, tensile properties predicted from AC bending specimens via inverse method have been validated with that from NC tensile specimens with certain success. Overall, it is expected that this proposed method can greatly shorten the time required for rapid quality control purpose, contributing to wider application of SHCC material in civil infrastructures.