论文部分内容阅读
1砼的特点分析1.1原材料及配合比由于现在大多都采用商品混凝土,为了泵送的顺畅,应严格控制粗骨料的最大粒径,根据泵送的高度,一般控制在5-25mm,小于普通砼的粗骨料粒径。砼的水泥用量,与普通的配合比相比存在着明显的差异,据输送管直径、泵送距离及骨料的情况所决定的,由于泵送砼所使用的粗骨料粒径偏小,砂率也有所加大,水泥用量有所增加。
1 Analysis of the characteristics of concrete 1.1 Raw materials and mix As most of the commercial use of concrete now, in order to pump the smooth, coarse particles should be strictly controlled the maximum size, according to the height of the pump, the general control of 5-25mm, less than normal Concrete coarse aggregate size. Concrete cement content, compared with the ordinary there is a clear difference, according to the diameter of the delivery pipe, pumping distance and the aggregate situation determined by the pumping of concrete used coarse aggregate particle size is small, Sand rate has also increased, the amount of cement has increased.