论文部分内容阅读
水泥在凝固过程中体积一般总要有较大的收缩,在空气中硬化时收缩值更大。所以在砼构件补强、锚接或砼孔洞、裂缝处理中,尤其是在防水工程中,均要采用膨胀水泥。膨胀水泥的种类很多,常见的有硅酸盐膨胀水泥、石膏矾土膨胀水泥、自应力膨胀水泥等。但膨胀水泥只在特殊工程中才会选用,并不多见。所以有上述需要时可以根据以下介绍的方法自制膨胀水泥。这种膨胀水泥经本人反复试用,证明具有与真正的膨胀水泥相近的特点。
The volume of cement in the solidification process will always have a larger shrinkage, and the shrinkage will be greater when it hardens in the air. Therefore, in the reinforcement of ram members, anchoring or boring holes, crack treatment, especially in the waterproofing project, the expansion of cement must be used. There are many kinds of expansion cements, such as silicate swelling cement, gypsum alumina swelling cement, and self-stressing swelling cement. However, swelling cement is only used in special projects. It is rare. Therefore, when the above requirements are met, the expanded cement can be made according to the method described below. This kind of expansive cement was tried repeatedly by myself and proved to be similar to the real expansive cement.