利用纸浆废液提高混凝土强度及抗渗性能姜哲朴东哲崔勇勋１混凝土外加剂发展概况混凝土中掺入适量的外加剂能显著改善混凝土性能、加快施工速度、提高工程质量、节约原材料，是一项使用简便、技术经济效益显著的混凝土新技术。混凝土外加剂的发展，从３０年代以松香树脂... Improving the Strength and Impermeability of Concrete with Pulp Waste Liquid Jiang Zhe Pu Dongzhe Cui Yongxun 1 Development of Concrete Additives Introduction The addition of proper amount of additives to concrete can significantly improve the performance of concrete, speed up construction, improve the quality of works, and save raw materials. New technology for concrete that is easy to use and has significant technical and economic benefits. The development of concrete admixtures, from the 30’s to Rosin...