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粉煤灰是火电厂燃煤的副产品,如何处理利用是国内外十分关注的问题。目前解决这一问题的途径很多,利用粉煤灰筑坝是有效的方法之一。 粉煤灰是一种轻质、多孔松散体,其外形呈粒状,颜色从灰白色到深灰色,其中亦含有大于2mm的颗粒,在颗分级配曲线上,大部份分布在0.5-0.005mm范围内。按分类属于粉砂。比重为2.17-2.21,最大孔隙比为2.04-2.08,最小孔隙比为0.78-1.18。对振动荷载反应很灵敏,虽其强度并不算太低,但抗液化的性能却很差。因此,作为一种筑坝材料,
Fly ash is a by-product of coal-fired power plants. How to deal with it is a matter of great concern at home and abroad. At present, there are many ways to solve this problem. The use of fly ash to build dams is one of the effective methods. Fly ash is a lightweight, porous, loose body with a granular appearance ranging from grayish white to dark gray, which also contains particles larger than 2mm, mostly distributed in the 0.5-0.005mm particle size distribution curve. Within range. According to the classification belongs to silt. The specific gravity is 2.17-2.21, the maximum porosity ratio is 2.04-2.08, and the minimum porosity ratio is 0.78-1.18. The response to vibration loads is very sensitive, although its strength is not too low, but the performance of anti-liquefaction is very poor. Therefore, as a dam material,