Results indicate that proper quantities of ultra-fine limestone flour can help engineers to decrease the time-loss of concrete slump constant and to increase concrete strength.
适当的掺量可减少混凝土坍落度的经时损失，提高混凝土强度。
The utility model relates to a packing bag, powdery or granular materials in which need to be poured out in proper quantities for many times.
本实用新型涉及一种需要多次适量倒出其中所盛装粉状或颗粒状物料的包装袋。
The utility model relates to a packing bag, powdery or granular materials in which need to be poured out in proper quantities for many times.
本实用新型涉及一种需要多次适量倒出其中所盛装粉状或颗粒状物料的包装袋。
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