Optimization of the content of tricalcium silicate of high cementing clinker

Abstract

Optimization of the content of tricalcium silicate (C₃S) of high cementing clinker was investigated. The content of free-CaO(f-CaO), mineral composite, the content of C₃S in the clinker and the hydration product were analyzed by chemical analysis and X-ray diffraction (XRD). “K Value” method of QXRD was selected as a quantitative analysis way to measure the content of C₃S, and the strength of cement paste was determined. The results show that at a water cement ratio of 0.29, the strength of cement paste with 73% C₃S can be up to 97.5 MPa at 28 days age. The strength at 28 d of cement with 73% C₃S is 16% higher than that with 78% C₃S at water requirement for normal consistency. The relationship between the strength of high cementing Portland cement and the content of C₃S in the clinker is nonlinear. According to the strength of cement paste, the optimal content of C₃S in cement clinker is around 73% in this paper.

Keywords

optimization / tricalcium silicate / high cementing clinker / cement paste

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