Waterproof high-strength admixture for autoclaved aerated concrete

The invention relates to the technical field of concrete, in particular to a waterproof high-strength admixture for autoclaved aerated concrete. The admixture comprises 1-2 parts of hydroxy propyl methyl cellulose, 1-2 parts of dispersible emulsion powder, 1-2 parts of lignocellulose, 5-10 parts of high-temperature-resistant anti-permeability agent, 70-80 parts of nano silica fume, 1-2 parts of early strength agent and 3-5 parts of anti-cracking agent. The waterproof high-strength admixture for the autoclaved aerated concrete has the advantages that the anti-freeze capacity, anti-permeabilitycapacity and anti-corrosion capacity of the concrete are improved; the prepared concrete is high in water-reducing rate, low in bleeding rate and higher in strength, well solves the problem that the autoclaved aerated concrete needs high strength and super toughness, and has wide market prospects. 本发明涉及混凝土技术领域，具体为种蒸压加气混凝土防水高强外加剂，其包括以下组分：羟丙基甲基纤维素1-2份、可分散性乳胶粉1-2份、木质纤维素1-2份、耐高温抗渗剂5-10份、纳米微硅粉70-80份、早强剂1-2份、抗裂剂3-5份；本发明的有益效果是：本