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利用MIP,XRD,TG,SEM等试验方法对软水溶蚀作用下水泥粉煤灰硬化浆体的微观结构进行了研究.结果显示水泥粉煤灰硬化浆体遭受软水溶蚀后,表现出一定程度的质量损失和微观结构劣化.180d溶蚀龄期内掺有粉煤灰的硬化浆体劣化程度稍高于纯水泥浆体,但粉煤灰的适量掺入可以延缓硬化浆体微结构出现劣化的趋势.水泥粉煤灰硬化浆体的微观结构稳定性在经受180d的软水溶蚀后并未遭到严重破坏.
The microstructure of hardened cement paste was studied by means of MIP, XRD, TG, SEM and other methods.The result shows that cement hardened paste shows a certain degree of quality after being softened by soft water And the degradation of microstructure.The hardenable slurry mixed with fly ash in the dissolution age of 180d is slightly higher than that of the pure cement paste, but the proper amount of fly ash can delay the deterioration of the microstructure of the hardened paste. The microstructure stability of cement fly ash hardened paste has not been severely damaged after being subjected to soft water erosion for 180 days.