【摘要】 以废砂、磷石膏,粉煤灰为主要原料,少量石灰、水泥、硫酸铝、硅酸钠作为添加剂,制作复合材料,既充分利用废物资源,又保护生态环境.本文将论述试验原料、试验原理、试验方法及结果,最后逐一分析讨论,作出初步结论.更多还原

【Abstract】 Composite materials are mainly made of such materials as waste sand,phosphate plaster,coal ash powder and a little additive—lime,cement,Al₂（SO₄）₃,Na₂SiO₃etc.,with which we can both make full use of waste materials resource and protect the ecological environment. This paper discusses experimental raw materials,principles methods and the result.It draws a pre- liminary conclusion through analysis and research on each of the items mentioned above.更多还原