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矾土水泥是一种快硬、早强、耐热的水硬性胶凝材料,是一种特种水泥,它的主要优点是初期强度增长迅速,两三天即达到规定的抗压极限强度。我国采用3天强度为国家规定的抗压极限强度。而普通硅酸盐水泥则用28天的强度。由于矾土水泥快硬、早强的特点非常突出,因此在工程设计中为了加快施工进度。往往在某些情况下喜欢应用矾土水泥,如预应力后张自锚构件的锚头。预制构件的节点连接等部位。但是在选用矾土水泥时,往往只注意利用其早强的优点。而忽
Bauxite cement is a kind of quick-hardening, early-strength, and heat-resistant hydraulic cementitious material. It is a kind of special cement. Its main advantage is that the initial strength increases rapidly, and the specified ultimate compressive strength is reached within two or three days. China adopts a three-day strength that is specified by the country as its ultimate compressive strength. Ordinary Portland cement uses 28 days of strength. Due to the characteristics of quick hardening and early strength of bauxite cement, in order to speed up construction progress in the engineering design. The use of alumina cements is often preferred in certain situations, such as the anchoring heads of prestressed self-anchor elements. Prefabricated components such as node connection. However, in the selection of alumina cement, it is often only used to take advantage of its early strength. Suddenly