The effect of Cement content on the rheology and mechanical properties of self-compacting concrete with micro silica



Nowadays, the application of Self-compacting concrete has been developed extensively in many countries. Recently, the use of pozzolanic material is developing at a high speed and has shown to have desirable effects on the improvement of concrete technology. In this research, the effect of cement content on rheology and mechanic properties has been investigated. The results of rheology test (slump flow, J-rings, V-funnel) indicate that workability and passing ability is improved in micro silica concrete in comparison with base concrete. Also, the results of compressive and tension strength tests have shown a significant improvement. Furthermore, the mechanism of these results considering electronic microscopy analysis can be expressed such that “micro and nano-particles not only act as filler but also increase the uniformity and the consistency of cement paste structure”.