同时掺加硅灰还能够提高掺玻璃纤维高钙粉煤灰水泥砂浆的和易性和强度，并减小其膨胀。

Addition of silica fume into the mix will result in increasing the workability and strength of cement mortar and decreasing the expansion.

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结果表明，复合膨胀剂对石屑砂浆凝结性能和抗冻性能几乎没有影响，可以改善其保水性和抗渗性。

Results indicated that the compound expansion agent almost hasn't effect both on setting and frost resistance of crushed stone mortar, but can enhance its permeability resistance ability.

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玻化微珠；膨胀珍珠岩；保温砂浆；骨料级配；力学性能；保温性能；工作性；

Vitrified microsphere; expanded perlite; insulating mortar; aggregate gradation; mechanical property; insulation property; workability;

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玻化微珠；膨胀珍珠岩；保温砂浆；骨料级配；力学性能；保温性能；工作性；

Vitrified microsphere; expanded perlite; insulating mortar; aggregate gradation; mechanical property; insulation property; workability;

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