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根据基于渗流理论的孔隙率强度模型的物理意义,认为利用矿物掺合料硬化浆体数据拟合的模型参数值以及不同龄期孔隙率-强度数据点与纯水泥拟合曲线的偏差,可分析矿物掺合料的掺合料效应。对钢渣、矿渣和粉煤灰等的掺合料效应分析表明,矿物掺合料均能在一定程度上提高孔在三维空间渗流临界点的水泥石强度σ0,体现了其微集料效应。因不同矿物掺合料的二次水化反应能力差异,在长短不一的水化早期内使其硬化浆体强度较纯水泥有一定下降,体现出不同程度的强度负效应,而在水化后期,各矿物掺合料均体现出一定的强度正效应。
According to the physical meaning of the porosity strength model based on seepage theory, it is considered that the model parameters of the fusible slurry data fitting of mineral admixtures and the deviations of porosity-strength data points and pure cement fitting curves at different ages can be analyzed Admixture Effects of Mineral Admixtures. The analysis of admixture effect on steel slag, slag and fly ash shows that the mineral admixture can all improve the strength σ 0 of cement stone at the critical point of percolation in three-dimensional space to a certain extent, which reflects its micro-aggregate effect. Due to the difference in the secondary hydration reactivity of different mineral admixtures, the strength of the hardened paste in the hydration of different lengths is somewhat lower than that of the pure cement, showing different degrees of negative effects of strength, Later, all the mineral admixtures showed some positive effect of strength.