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1 概述 粉煤灰作为燃煤电厂的废弃物,由于其容重较小,压缩性低以及良好的强度特性,因此,不仅在一般地基上用粉煤灰修筑路堤,而且粉煤灰路堤还修筑在高压缩性的冲积层或泥炭层上。 从国内外使用情况表明,粉煤灰主要应用于公路领域中,用于铁路领域的报道较少。因此,提高粉煤灰在铁路工程的综合利用能力,并使得粉煤灰作为填料在铁路路基工程中推广应用,还需做进一步系统而深入的实验研究。 粉煤灰的强度特性包括强度指标、应力一应变
1 Overview Fly ash, as a waste of coal-fired power plants, is built not only on fly ash but also on fly ash embankments due to its low bulk density, low compressibility and good strength properties Highly compressible alluvial or peat layers. From domestic and international usage shows that fly ash is mainly used in the field of roads, less used in the field of the railway. Therefore, to improve the comprehensive utilization of fly ash in railway engineering capacity, and make fly ash as a filler in the railway subgrade project to promote the use of further research needs to be done in-depth and systematic. The strength characteristics of fly ash include the strength index, stress-strain