利用固液萃取法对掺矿物掺和料的硬化水泥浆体孔溶液碱度进行了研究。结果显示,矿物掺和料的掺入降低了硬化水泥浆体的孔溶液碱度,掺量越大,碱度下降越多,但90 d时基本达到稳定;在相同掺量下,含有矿渣粉的浆体孔溶液碱度要高于含有粉煤灰浆体的碱度;相比于单掺矿渣粉,双掺粉煤灰和矿渣粉以及硅灰的掺入均会略微降低碱度。 The basicity of the hardened cement paste pore solution of the mineral admixture was studied by solid-liquid extraction. The results showed that the incorporation of mineral admixture reduced the alkalinity of the hardened cement paste solution. The greater the content of alkalinity, the more the alkalinity decreased, but basically stabilized at 90 d. At the same dosage, The alkalinity of the slurry hole solution is higher than that of the slurry containing fly ash slurry; the incorporation of double mixed fly ash, slag powder and silica fume slightly decreases the alkalinity compared to the single mixed slag powder.