张文豪;谢建斌;刘道炎;王卓蕾;王盛;

• 1:云南大学建筑与规划学院
• 2:昆明军龙岩土工程有限公司
• 3:中铁隧道集团二处有限公司

摘要(Abstract)：

为探讨水泥与高钙粉煤灰改良云南昆明滇池地区泥炭质土的强度变化及微观结构特征,以滇池泥炭质土和水泥、粉煤灰及高钙粉煤灰掺入后改性土为研究对象,开展了标准固结试验、直剪试验、无侧限抗压强度试验、SEM扫描电镜试验、能谱分析及XRD试验,通过宏观物理力学性质与微观结构特征相互联系、相互对比,得到最佳改良方案.研究结果表明:单掺水泥、粉煤灰及高钙粉煤灰和混合掺入后改性土的压缩模量、粘聚力和无侧限抗压强度都会随掺量(掺入质量分数)的增大而增大.混合掺入对泥炭质土的改良效果比单掺效果好,且当水泥高钙粉煤灰掺量为6%+12%时,改良效果最佳.

关键词(KeyWords)： 水泥;高钙粉煤灰;改良;泥炭质土;微观结构

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（11862024;51264037）;; 云南大学研究生科研创新基金（YDY2018249）

作者(Authors): 张文豪;谢建斌;刘道炎;王卓蕾;王盛;

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