As one new compound materials, the steel textile fiber concretes already had the application in the road engineering, but not sees in the toll station cement road surface's application.
作为一种新型复合材料，钢纤维混凝土在道路工程中已经多有应用，而在收费站水泥路面中的应用并不多见。
Test result shows that the mixing of this three materials accompany with increasing grind fineness, the strength of compound cement with large amount of fly ash can be improved significantly.
试验结果表明，选用粉煤灰、低钙石与沸石复合三掺，并相应提高粉磨细度，可明显地提高大掺量粉煤灰复合水泥的强度。
A halogen element, f, is major raw materials deriving fluorine compound, and because of low melting point, that is widely used in steelmaking, nonferrous metal smelting, cement, glass and ceramics.
萤石中含有卤族元素氟，是制取含氟化合物的主要原料，又由于熔点低而广泛用于炼钢、有色金属冶炼、水泥、玻璃、陶瓷。
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