Improved waste tire granular material and preparation method thereof

The invention relates to an improved waste tire granular material and a preparation method thereof. The material comprises, by weight, 24-30 parts of waste tire particles, 16-20 parts of sand and 8-10parts of polyurethane glue. The waste tire particles are black granular chippings obtained by mechanically cutting and crushing waste tires, and the diameter of each waste tire particle is 1-3mm; thesand is cleaned dry sand, and the diameter of the sand is 1-3 mm; and the glue is polyurethane glue. After a soil body in a certain range of a seasonal frozen soil area structure is replaced, the characteristics of heat insulation, water prevention, freezing prevention, temperature sensitivity, low elasticity modulus and the like are achieved, the thermal and mechanical properties of the soil body can be improved, and the anti-seismic and anti-freezing performance is improved. 本发明涉及一种改良废旧轮胎颗粒材料及其制备方法。该材料的重量组份为：24-30份废旧轮胎颗粒、16-20份砂、8-10份聚氨酯胶水；所述废旧轮胎颗粒是由废旧轮胎经机械切割破碎得到的黑色颗粒状碎屑，直径为1-3mm；所述砂为清洗干净的干砂，直径为1-3mm；所述胶水为聚氨酯胶水。本发明置