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近几年来,在地下铁道中,为了提高混凝土的抗渗性能,节省水泥,便于施工。在混凝土中掺入了松香热聚物加气剂(以下简称加气剂)及纸浆废液塑化剂(以下简称塑化剂),能够取得较好的效果,曾通过大量系统性的试验得到了进一步的证实,当混凝土养护良好时,掺入这两种外加剂的混凝土的抗渗标号可达B20以上。我们又同地铁工程公司结合遵照毛主席“在生产斗争和科学实验范围内,人类总是
In recent years, in the subway, in order to improve the impermeability of concrete, save the cement, easy construction. In the concrete incorporation of rosin hot polymer air entraining agent (hereinafter referred to as air entraining agent) and pulp waste plasticizer (hereinafter referred to as plasticizer), to obtain better results, have been through a large number of systematic tests Further confirmed that when the concrete is cured well, the impermeability of concrete admixed with these two admixtures up to B20. We also follow Chairman Mao with the Mass Transit Railway Engineering Corporation. "In the context of the struggle for production and scientific experimentation, mankind is always