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1防水混凝土的施工技术(1)防水混凝土可通过调整配合比,或掺加外加剂、掺合料等措施配制而成,其抗渗等级不得小于P6.其试配混凝土的抗渗等级硬度设计要求提高0.2MPa。(2)用于防水混凝土的水泥品种宜采用硅酸盐水泥、普通硅酸盐水泥,采用其他品种水泥时应经试验确定。宜采用坚固耐久、粒形良好的洁净石子,其最大粒径不宜大于40mm。砂宜选用坚硬、抗风化性强、洁净的中粗砂,不宜使用海砂。用于混凝土拌制的水,应符
1 waterproof concrete construction technology (1) waterproof concrete by adjusting the mix, or mixed with admixtures, admixtures and other measures formulated, the impermeability rating shall not be less than P6. Immersed concrete grade hardness test design Require to improve 0.2MPa. (2) Portland cement used for waterproofing concrete should be used Portland cement, ordinary portland cement, cement should be tested by other species. Should adopt durable, good shape of the clean stone, the largest particle size should not be greater than 40mm. Sand should be used hard, weathering strong, clean coarse sand, sea sand should not be used. For concrete mixing water, should be