Underwater self-compacting concrete and preparation method thereof

The invention discloses underwater self-compacting concrete and a preparation method thereof. The concrete is prepared from components in parts by weight as follows: 720-750 parts of coarse aggregate,450-500 parts of fine aggregate, 500-540 parts of cement, 200-240 parts of water, 140-155 parts of porous microspheres, 13-15 parts of a film-forming agent and 35-55 parts of a thickener, and the thickener comprises terpene-phenolic resin emulsion, epoxy resin and beta-terpene resin. The underwater self-compacting concrete and the preparation method thereof provided by the invention have the advantages that the fluidity is higher, the self-compacting effect is realized, the compactness and the strength are improved, and the underwater self-compacting concrete can be poured underwater and is not easy to disperse. 本发明公开了一种水下自密实混凝土及其制备方法，属于混凝土的技术领域，包含以下重量份的组分：粗骨料720-750份，细骨料450-500份，水泥500-540，水200-240份，多孔微珠140-155份，成膜剂13-15份，增稠剂35-55份，其中，增稠剂包括萜烯-酚醛树脂乳液、环氧树脂和β-萜烯树脂。本发明提供的水下自密实混凝土及其制备方法既具有较高的流动性，具有自密实的作用，提高密实度和强度，又能在水