High Performance Mechanical Properties Of Self-compacting Concrete

An experimental research on the behavior of self-compacting high performance concrete under mixing proportion, compressive strength, splitting tensile strength and stress-strain curve was performed in this paper. The calculating methods and corresponding formulas which suit the characteristics of the mechanical properties of self-compacting high performance concrete were put forward .The main achievements are as follows :1.Through orthogonal experiments on self-compacting high performance concrete . According to characteristics of mechanics and flowing-alteration of self-compacting concrete, the author screens out 4 main factors and designs mixing proportion of concrete through 3 level L₉(3⁴) orthogonal experiment table. By experiments the author also arranges out sequence of every factor to index. Finally the author confirms the best mixing proportion of self-compacting concrete.2. Through the compressive strength and the splitting tensile strength experiments on self-compacting high performance concrete . According to the selected mix ratios, two groups of concrete specimens, one of which was made with no vibration, were made, in order to do parallel studies. The comparing of the ratio of the strength of the group with no vibration to its corresponding group, would help us to see that, whether the reducing effect of no vibration on the compressive strength of cubes and the splitting tensile strength is evident.3. Through the experiments on fly ash self-compacting high performance concrete. According to characteristics of mechanics and flowing-alteration of self-compacting concrete, the author selects 5 main factors and designs mixing proportion test of concrete through orthogonal experiment table. By experiments the author arranges the sequence of every factor to index. Finally the author confirms the best mixing proportion of self-compacting concrete.4.Through the compressive strength and the splitting tensile strength experiments on fly ash self-compacting high performance concrete. In this text, a new kind of fly ash Self-compacting High Performance Concrete with no-vibration and vibration are concerned. The comparing of the ratio of the strength of the group with no vibration to its corresponding group, would help us to see that, whether the reducing effect of no vibration on the compressive strength of cubes and the splitting tensile strength is evident.5.Through the experiments on self-compacting high performance concrete. This paper introduces an experimental study on mechanical properties of self-compacting concrete, which include compressive strength, effect of specimen size, splitting tensile strength, maintain ages, flexible strength and the relationship between intensity index.6.Through the experiments on self-compacting high performance concrete specimens. In this text , the relationship between the prismatic strength and the cubic strength is obtained .the regression formulas of the peak strain and the modulus of elasticity are established . A unified numerical expression of the compressive stress - strain curve applicable to concrete is put forward .