Effects of polypropylene fiber (PPF) on properties of phosphate cement-based concrete, such as flowability, operable time, flexural and compressive strength were investigated.
主要研究了聚丙烯纤维(PPF)对磷酸盐混凝土性能如流动性、可操作时间、抗折和抗压强度的影响。
The deluge core of the utility model has the advantages of good high temperature resistance, impact resistance and good breaking effect of a riser and operable time of an opening flask.
本实用新型雨淋芯具有很好的耐高温、耐冲击性，以及良好的冒口拔断效果及开箱可操作时间。
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