摘要
粉煤灰是目前数量最大、对环境影响最为严重的一类固体废弃物。建设贮灰场是一项贮灰与环保工程,但贮灰场运行过程中出现的粉煤灰对大气和水源的污染是急待解决的问题。在对粉煤灰、膨润土、石灰性质及相互作用机理分析的基础上,通过对混合料抗渗、无侧限抗压强度、抗冻融循环、抗干湿循环以及抗酸碱环境等技术性能的试验对比,并采用满足贮灰场防渗要求的固化粉煤灰混合材料,从而为其推广应用提供了科学依据。
The fly ash is a kind of solid waste produced by the power plant and stored in some places, but its influence is the most serious on environment now. In the past, the aim to construct storing sites is to prevent the fly ash from entering the surrounding or polluting the running water. Because of the improper design, construction and operation of storing site it is serious that the fly ash entering the air or the infiltration ash-water entering underground pollutes the air and the groundwater. It is emergency on solving it. Through mechanism analysis and testing of fly ash, bentonite and lime, a new material mixing fly ash, bentonite, lime and clay is developed to prevent the seepage of ash-water. It can be paved at the bottom and inner slope of embankment surrounding the storing site. The new material is analyzed by testing comparison of technical features such as compression strength, impermeability, frost resistance, dry or wet resistance and acid or alkali environment of mixing material; the economic mixing ratio is raised to offer scientific foundation for the application of the project technology.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第18期3229-3235,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
防渗材料
固化粉煤灰
贮灰场
污染
impermeability material
solidifying fly-ash
storing site
pollution
