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由于水泥石的收缩,会导致结构的开裂,大板房屋接缝的渗水和结冰是因此而造成的。本文介绍苏联古比雪夫建工学院研制的一种膨胀剂,将该膨胀剂加入普通硅酸盐水泥中,不仅不会产生收缩,而且当其在局部的封闭空间中硬化时(如墙板的接缝中),还可以提高混凝土或砂浆的密实性和强度,并提高连接节点的密封性能。这种膨胀剂可在任何水泥厂或构件厂中生产,也可在建筑工地用普通设备生产。
Due to the shrinkage of the cement stone, cracking of the structure can occur, and the seepage and icing of the joints of the large-sized house are caused by this. This article describes an expansion agent developed by the Soviet Union’s Kuibyshev Institute of Construction. This expansion agent is added to ordinary portland cement, not only does not shrink, but also when it hardens in a partially closed space (such as wallboards In joints), it can also increase the compactness and strength of concrete or mortar, and improve the sealing performance of joints. The expansion agent can be produced in any cement plant or component plant, and can also be produced on a construction site using common equipment.