Energy-saving building material and preparation method thereof

The invention discloses an energy-saving building material and a preparation method thereof. The building material is prepared from the following raw materials in parts by weight: 30-40 parts of building rubbish coarse aggregates, 18-30 parts of cementitious materials, 10-15 parts of liquified abandoned plastics, 15-20 parts of building rubbish fine aggregates, 1.5-2.5 parts of attapulgite, 20-25parts of mineral cotton, 0.7-1.5 parts of a hardening agent, 0.8-1.6 parts of a water reducer, 3-5 parts of steel slag powder, 2.5-8.5 parts of nanometer silicon particles, 7-13 parts of nano sodium-calcium bicarbonate, 3-6 parts of imitated steel wire fibers, 3.7-8.3 parts of poly dimethyl diallyl ammonium chloride, 0.4-1 part of poly(ethylene glycol) acrylic ester and 24-26 parts of water. The obtained building material is high in compressive strength, tensile strength and permeation resistance and high in energy-dissipating capacity and elasticity modulus. 本发明公开了种节能建筑材料及其制备方法，该建筑材料由以下重量份的原料制备而成：建筑垃圾粗骨料30-40份、胶凝材料18