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塑料混凝土即在混凝土中掺有少量合成材料的混凝土。这种混凝土大致可分为四类:一、聚合水泥混凝土;二、无水泥塑料混凝土;三、聚合石膏;四、以多孔塑料作填料的塑料混凝土。一、聚合水泥混凝土聚合水泥混凝土即在普通水泥混凝土中掺入少量聚合物,常用的聚合物有:聚乙酸乙烯酯水乳液、橡胶浆。目前也有人在研究采用聚苯乙烯,聚甲基丙烯酸甲酯,聚氯乙烯,过氯乙烯及聚乙烯的水乳液作掺料。聚合物的掺加量一般为水泥量的10—20%左右。加入聚合物后,混凝土强度有很大提高,常用的聚乙酸乙烯酯水泥混凝土的抗拉强度比相应的普通混凝土高4倍,抗冲击强度高10倍以上,抗压强度亦
Plastic concrete is concrete with a small amount of synthetic material. This type of concrete can be roughly divided into four categories: 1. Polymer cement concrete; 2. Cement-free plastic concrete; 3. Polymerized gypsum; 4. Plastic concrete with porous plastic as filler. I. Polymer cement concrete Polymer cement concrete is a kind of polymer blended with ordinary cement concrete. Commonly used polymers include: polyvinyl acetate water emulsion and rubber slurry. At present, some people are also studying the use of aqueous emulsions of polystyrene, polymethyl methacrylate, polyvinyl chloride, perchloroethylene and polyethylene as admixtures. The blending amount of the polymer is generally about 10-20% of the cement amount. After the addition of polymer, the strength of the concrete is greatly improved. The tensile strength of commonly used polyvinyl acetate cement concrete is 4 times higher than that of ordinary concrete, the impact strength is 10 times higher, and the compressive strength is also high.