Evaluation of Relations among Basic Mechanical Properties of Fly-ash Concrete with Machine-made Sand
Although the machine-made sand was widely used for concrete in recent years in China, it was short of studies on the relations among the basic mechanical properties of fly-ash concrete with machine-made sand (MSFAC). However, these relations such as the compressive strength, the tensile strength and the elastic modulus with the cubic compressive strength (i.e. strength grade) are the basis of design for concrete structures. This paper summarizes the test data from the published references, and discusses the relations among these properties by statistical analyses compared with those of ordinary concrete. The results show that only the tensile strength of MSFAC can be safely forecasted by the same formula of ordinary concrete specified in current Chinese design code. When the strength grade is higher than C45, the axial compressive strength of MSFAC is largely forecasted by the formula of ordinary concrete. The elastic modulus of MSFAC is larger than that of ordinary concrete, which should be prospect by the formula in this paper. This work gives out some cautions for the proper use of the MSFAC in concrete structures.
fly-ash concrete machine-made sand compressive strength tensile strength elastic modulus relations
Fenglan Li Hui Wang Changyong Li
School of Civil Engineering and Communications North China University of Water Conservancy and Electric Power Zhengzhou 450011, China
国际会议
三峡
英文
2363-2366
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）