科研之友
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摘要
In this paper, a new consolidation technology is proposed for solidifying the fly ash from municipal solid waste; moreover, the safety of the solidified fly ash for practical applications is investigated. This approach aims to address the high levels of heavy metals, such as Pb and Zn, in the fly ash from municipal solid waste, which exceed the national emission standards for solid waste and water discharge in China. This consolidation method was found to increase the compressive strength (after 28 days) of fly ash concrete from municipal solid waste to values greater than 40 MPa. Furthermore, the asphalt mixture prepared with the fly ash concrete offered some excellent advantages, such as better residual Marshall Values and rutting resistance, which are beneficial when laying roads. Additionally, the leaching toxicity of the asphalt mixture was well within the limits prescribed by the national emission standards, which implies that the heavy metal ions were effectively bound in the asphalt mixture and the aggregate was stably solidified.
- 出版日期2015-6
- 单位浙江大学宁波理工学院; 浙江大学
