Some retarders permanently weaken the concrete . 某些缓凝剂对混凝土起长期的弱化作用。
There is some about that retarders or retarding plasticisers really alter the total heat output or, for that matter, the rate of heat generation . 无疑地,缓凝剂或缓凝塑化剂确实改变了点总放热量或放热速度。
Gypsum for portland cement retarder 硅酸盐水泥缓凝剂用石膏
Research the application of titanium white residue as set retarder in cement 钛白渣作水泥缓凝剂的应用研究
Standard test method for thermal integrity of flexible water vapor retarders 挠性水蒸汽缓凝剂热完整性标准试验方法