碱渣-粉煤灰稳定土力学性能研究  

Mechanical Properties of Soda Residue-Fly Ash Stabilized Soil

作　　者：赵晓晴 蒋成 黄勃 战楚南 周子萌 赵明睿 杨天风 ZHAO Xiaoqing;JIANG Cheng;HUANG Bo;ZHAN Chunan;ZHOU Zimeng;ZHAO Mingrui;YANG Tianfeng(School of Civil and Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;CNNC Ecology Environment Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]江苏海洋大学土木与港海工程学院,连云港222005 [2]中核生态环境有限公司,连云港222000

出　　处：《硅酸盐通报》2025年第4期1504-1512,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51809101);江苏省高等学校自然科学研究项目(23KJA580003);产学研合作项目(JOUH24407);连云港市重点研发计划项目(CG2434);江苏省研究生科研与实践创新计划项目(SJCX24-2081)。

摘　　要：为提高碱渣利用率,减少碱渣堆存对环境带来的危害,本文提出用碱渣、粉煤灰稳定黏土,外掺水泥、石灰,制备碱渣-粉煤灰稳定土填料。以最大干密度、最优含水率、无侧限抗压强度(UCS)、抗剪强度参数为指标,利用正交矩阵分析法进行分析,根据影响权重探究碱渣、粉煤灰、水泥、石灰对碱渣-粉煤灰稳定土力学性质的影响规律。结果表明,粉煤灰掺量对最大干密度影响最大;碱渣掺量对最优含水率、7 d无侧限抗压强度和7 d抗剪强度内摩擦角影响最大;石灰掺量对7 d抗剪强度黏聚力影响最大。碱渣-粉煤灰稳定土具有良好的强度性能。可基于碱渣-粉煤灰稳定土级配机理和胶凝材料胶结机理,利用正交矩阵分析法推荐配合比适用范围,使碱渣-粉煤灰稳定土能够更好地服务实际工程。In order to improve the utilization rate of soola residue and reduce the harm to the environment caused by soda residue storage,this paper proposed to use soda residue and fly ash stabilized clay,and add cement and lime to prepare soda residue-fly ash stabilized soil.Taking the maximum dry density,optimal water content,unconfined compressive strength(UCS)and shear strength parameters as the indexes,the orthogonal matrix analysis method was used to analyze the influence of soda residue,fly ash,cement and lime on the mechanical properties of soda residue-fly ash stabilized soil according to the influence weight.The results show that the fly ash content has the greatest influence on the maximum dry density.The soda residue content has the greatest influence on the optimum water content,7 d UCS and the internal friction angle of 7 d shear strength.The lime content has the greatest influence on the cohesion of 7 d shear strength.The soda residue-fly ash stabilized soil has good strength performance.Based on the gradation mechanism of soda residue-fly ash stabilized soil and the cementation mechanism of cementitious materials,the orthogonal matrix analysis method is used to recommend the scope of application of the mix ratio,so that the soda residue-fly ash can better serve the actual project.

关 键 词：碱渣-粉煤灰稳定土 正交矩阵分析法 击实性质 力学性能 级配机理 胶结机理 配合比 

分 类 号：X781[环境科学与工程—环境工程]