盛明强,邹淳,乾增珍,鲁先龙

• 1:南昌大学
• 2:中国地质大学(北京)
• 3:中国电力科学研究院有限公司

摘要(Abstract)：

沙漠风积沙稳定性差，采用水泥作为固化剂进行风积沙固化，是改善风积沙性质和实现风积沙资源化利用的有效手段。以取自内蒙古库布齐沙漠的风积沙为材料，制备3%含水量的重塑风积沙，掺入水泥固化剂并充分拌匀而形成固化风积沙，开展水泥固化风积沙的抗剪、抗压和抗拔承载性能试验。结果表明，水泥掺量对固化风积沙黏聚强度的提高程度要大于内摩擦角。含水量3%的风积沙掺入6%的水泥经28 d常温养护的固化风积沙无侧限抗压强度平均值为0.156 MPa。固化风积沙扩展基础抗拔荷载-位移曲线呈现初始弹性段至峰值荷载以及峰值荷载后破坏的两阶段脆性破坏特征。水泥固化提高风积沙抗拔承载性能效果显著，且与基础底板尺寸、抗拔埋深及基础深宽比等因素有关。

关键词(KeyWords)： 沙漠风积沙;固化风积沙;固化剂;固化土性质;承载性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52069013;52169027);; 国家电网公司科技项目(GC17201100065)

作者(Author): 盛明强,邹淳,乾增珍,鲁先龙

DOI: 10.19509/j.cnki.dzkq.2021.0259

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