【摘要】 研究了废石膏作为路基回填材料的物理力学性能和路用性能,并对废石膏回填材料的安全性进行了评价。研究表明, 废石膏回填材料CBR达19％以上,并具有良好的耐久性能,其重金属浸出量远低于国家标准规定值,因此废石膏作为回填材料是安全可行的。更多还原

【Abstract】 Waste gypsum is waste chemical gypsum. In this paper,the physical mechanics performance and road performance of waste gypsum used as road bed filling material were discussed, and its the security Was evaluated as well. It showed that CBR value of waste gypsum Was above 90% , and the durability Was good. Meanwhile, leach quantity of heavy metal Was farbellow that of GB, therefore, it Was safe and viable for waste gypsum to be filling material.更多还原