水泥粒径分布对水泥石强度的影响

以水泥石水化物填充度最高为原则,综合考虑水泥水化度、水泥固相体积增量和水泥浆体初始堆积密度两个方面的匹配关系,通过理论推导和试验验证建立了多粒径(连续粒径分布)单组分水泥石强度与水泥粒径分布之间关系的计算方法,在此基础上就水泥粒径分布对水泥石强度的影响进行探讨。结果表明:计算值与试验值比较吻合,用本文中提供的方法可以根据水泥的粒径分布和各水灰比计算其不同龄期的填充度和抗压强度。

Influence of Size Distribution of Cement Particles on Strength of Cement Paste

On the basis of the principle for the highest filling degree of cement hydrates,it was synthetically considered the matching connection between hydration of cement,volume increment of solid phase and packing density of cement paste.A calculation method for a connection between cement continuous particle size distribution and strength of cement paste was developed and tested by experiment.Based on the above-mentioned analysis,a tentative research on the effect of particle size distribution of cement on strength of cement paste was carried out.The results showed that the calculated values were in good agreement with the experimental values,using the methods provided in this paper according to the size distribution of cement and the mass ratio of water and cement,the filling degree and compressive strength of different ages were calculated.