技术经济分析表明:采用低透水性的砂浆和混凝土作为桥梁的防水层具有相当高的经济效益。 在运输建筑中,对构筑物,特别是对桥梁在耐久性方面有相当高的要求,这是由于结构物在复杂的气候条件下工作,同时兼有动荷载的作用。在这样的钢筋混凝土结构中,混凝土应具有高的抗拉变形性和密实度。掺水溶性树脂外加剂的混凝土最充分地满足这些要求。 Technical and economic analysis shows that the use of low permeability mortar and concrete as a bridge waterproofing layer has a very high economic benefits. In transport buildings, there is a considerable need for durability of structures, particularly bridges, due to the fact that structures work under complicated climatic conditions and both dynamic loads. In such reinforced concrete structures, concrete should have high tensile deformability and density. Concrete with water-soluble resin admixtures meets these requirements most fully.