Mortar consists of sand mixed with cement and water. The resulting substance must be sufficiently flexible to flow slightly But not collapse under the weight of the masonry units. 由沙和水泥、水混合而成。砂浆应有足够的塑性,能稍微流动,但要承受得起砖石的重量。
The explosive cutting effect of shaped charge in the stone have been simulated by the experiments of cutting in the cement models mostly with powdery emulsion explosive ( PEE). The influence on powdery emulsion explosive property by adding inertial substance is investigated. 本文以粉状乳化炸药(PEE)为原料,通过对聚能效应在水泥砂浆试块模型中切割情况的研究,模拟了聚能装药在石材切割中的爆炸作用效果。
The activate effect of NaOH taken as the activator in the fly ash cement rubber granulated substance in single mix and duplicate mixes in the experiment is not obvious. 在单掺与复掺实验中,粉煤灰水泥胶砂以NaOH为激发剂,激发效果不明显;
Studied adaptability of exposed-aggregate cement concrete pavement application in plateau area, based on pavement engineering substance of Ga-La mountain tunnel pavement in La-Gong road. 本文以拉贡公路嘎拉山隧道路面实体工程为依托,主要研究EACCP在高原地区应用的适应性。