Epoxy - ethylene - based resin,which is resistant to high temperature,acid,caustic and solvent and has an excellent anti -permeation performance,is the best material selection for the internal corrosion - resistant coating of slurry tanks and pits because its high mechanical strength,easy construction,high adhesion performance and low contraction rate.
泥浆罐、泥浆池是石油钻井过程中的重要设施,而所盛装的是强腐蚀性的钻井流体,稍有不慎就会引起腐蚀性液体的渗漏与渗透,造成环境污染。
The application of the polycarboxylate water-reducing admixture(PCA) in self-leveling cement mortar was studied.
对聚羧酸减水剂在水泥自流平砂浆中的应用进行了研究,认为聚羧酸减水剂适用于水泥自流平砂浆并且具有较高的性价比,但在水泥自流平砂浆面层配方设计中应注意气泡问题。
The physical situations of volcano activity,from magma supply to eruption,can be pided into 3 phases(stages).
火山活动从岩浆补给到岩浆喷发的物理过程可分为3个阶段:1)岩浆补给阶段,岩浆囊压力差或过剩压力的大小决定了火山活动是否休眠或扰动,岩浆补给速率对压力差起了决定性的作用;2)通道形成阶段,当过剩压力超过围岩破裂强度时,围岩开始破裂,之后水热活动起了重要的作用;3)岩浆运移与失稳喷发阶段,主要是岩浆运移与地壳盖层的相互作用与失稳的过程。