As emerging advanced construction materials, strain hardening cementitious composites (SHCCs) have seen increasing field applications recently to take advantage of its unique tensile strain harden- ing behavior, yet existing uniaxial tensile tests are relatively complicated and sometime difficult to imple-…
As emerging advanced construction materials, strain hardening cementitious composites (SHCCs) have seen increasing field applications recently to take advantage of its unique tensile strain harden- ing behavior, yet existing uniaxial tensile tests are relatively complicated and sometime difficult to imple- ment, particularly for quality control purpose in field applications. This paper presents a new simple inverse method for quality control of tensile strain capacity by conducting beam bending test. It is shown through a theoretical model that the beam deflection from a flexural test can be linearly related to tensile strain capacity. A master curve relating this easily measured structural element property to material tensile strain capacity is constructed from parametric studies of a wide range of material tensile and compressive properties. This pro- posed method (UM method) has been validated with uniaxial tensile test results with reasonable agreement. In addition, this proposed method is also compared with the Japan Concrete Institute (JCI) method. Compa- rable accuracy is found, yet the present method is characterized with much simpler experiment setup require- ment and data interpretation procedure. Therefore, it is expected that this proposed method can greatly sim- plify the quality control of SHCCs both in execution and interpretation phases, contributing to the wider acceptance of this type of new material in field applications.