由于废石粉中活性成分较少，所以用废石粉部分或全部取代粉煤灰时，会使砂浆后期强度降低。
As the stone waste powder had less the active ingredient, Using the stone waste powder to replace small or all of fly ash would reduce the later strength of the mortar.
为了提高混凝土的抗裂性能，本文主要从水泥矿物成分对砂浆脆性的影响进行试验研究分析。
In order to improve crack resistance of concrete, test and analysis are made on the influence of mineral compositions of cement on brittleness of sand grout.
并对相应的砂浆棒膨胀率和孔溶液的成分变化进行测量。
And the expansion of the corresponding mortar bar and changes in pore solution composition wre measured.
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