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据报道,美国Lone Star工业公司研制了一种新型水泥产品——Pyrament。这种水泥有惊人的高早强性能,但其价格昂贵。以下是该公司对Pyrament的简要介绍。 Pyrament可以用普通设备进行搅拌、运输和浇注,用它制成的混凝土早期强度和最终强度都远高于普通混凝土。Pyrament混凝土的抗渗性能好,耐冻融循环次数多,能更好地经受除冰剂和硫酸盐的侵蚀。这种混凝土在浇注4小时以后即可承受公路交通,在芝加哥的O’Hare机场,浇注该种混凝土的跑道4小时后即可起降波音747这样的大型飞机。Pyrament还可在较低温度下进行浇注
According to reports, the United States Lone Star Industrial Company developed a new type of cement product, Pyrament. This cement has surprisingly high early performance but it is expensive. The following is a brief introduction of the company to Pyrament. Pyrament can be stirred, transported, and poured with ordinary equipment. The early strength and ultimate strength of concrete made from it are much higher than those of ordinary concrete. Pyrament concrete has good impermeability, resistance to freeze-thaw cycles, and better resistance to de-icing agents and sulfates. The concrete can withstand road traffic after being poured for 4 hours. At the O’Hare Airport in Chicago, a large aircraft such as the Boeing 747 can be picked up and unloaded 4 hours after pouring the concrete runway. Pyrament can also be poured at lower temperatures