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水泥裹砂(石)混凝土,是日本、丹麦等国七十年代末广泛应用的一项新技术。这种技术是先把水泥、砂(石)和部分水放入搅拌机,进行第一次搅拌,使水泥裹在砂(石)上,形成水泥砂(石)浆后,再加入石子和水,进行第二次搅拌,形成混凝土。近几年来,国内许多单位,对水泥裹砂(石)混凝土进行了试验研究,并在一些工程上试用。结果表明有两大优点:一是强度高、质量好,水电部在山东郯城青泉寺引水隧洞工程中,采用了水泥裹砂喷射混凝土,其强度提高了15%;二是节约水泥,山东省淄博市房建公司采用水泥裹石法生产混凝土构件节约水泥15～20%。
Cement sand (stone) concrete, Japan, Denmark and other countries widely used in the late 1970s a new technology. In this technique, cement, sand and some water are put into a blender for the first time, the cement is wrapped on the sand (stone) to form cement sand (stone) pulp, and then the stones and water are added, The second mixing, the formation of concrete. In recent years, many domestic units, the cement wrapped sand (stone) concrete was studied and tested in some projects. The results show that there are two advantages: First, high strength, good quality, the Ministry of Electric Power in Shandong Yuncheng Qingquan Temple diversion tunnel project, the use of cement wrapped sand shotcrete, the intensity increased by 15%; the second is saving cement, Shandong Province Zibo City Housing Construction Corporation cement concrete wrapped stone method to save 15 to 20% of cement.