bulking factor 湿胀率; 体积扩张系数；体胀系数; 增量系数..
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The results showed that alkali-activated fly-ash cementing material has good sulphuric acid resistance and low bulking factor and high drying shrinkage against ordinary Portland cement.
结果表明：与水泥相比，碱激发粉煤灰胶凝材料具有良好的抗硫酸侵蚀性、湿胀小、干缩大。
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