赤泥-矿渣基地聚物固化黄土冻融后力学特性研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (4): 1482-1489.

赤泥-矿渣基地聚物固化黄土冻融后力学特性研究

郭强¹, 张晓雷², 史晨曦², 门杰³

1.山西省高速公路集团有限责任公司,太原 030031;
2.太原理工大学土木工程学院,太原 030024;
3.山西交通控股集团有限公司大同高速公路分公司,大同 037000

收稿日期:2023-08-29 修订日期:2023-12-31 出版日期:2024-04-15 发布日期:2024-04-17
通信作者: 张晓雷,硕士研究生。E-mail:1023032436@qq.com
作者简介:郭强(1970—),男,高级工程师。主要从事公路工程方面的研究。E-mail:609770816@qq.com
基金资助:
山西交通控股集团项目(20-JKKJ-17)

Mechanical Properties of Red Mud-Slag Based Geopolymer Solidified Loess after Freeze-Thaw Cycle

GUO Qiang¹, ZHANG Xiaolei², SHI Chenxi², MEN Jie³

1. Shanxi Province Expressway Group Co., Ltd., Taiyuan 030031, China;
2. College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
3. Datong Expressway Branch of Shanxi Communications Holding Group Co., Ltd., Datong 037000, China

Received:2023-08-29 Revised:2023-12-31 Online:2024-04-15 Published:2024-04-17

摘要/Abstract

摘要： 本文通过击实试验获得了不同赤泥掺量、水玻璃模数、水玻璃掺量条件下地聚物固化黄土的最大干密度和最佳含水率;基于最佳含水率结果制作试块并开展地聚物固化黄土冻融循环试验,测试了固化黄土试块的质量损失和无侧限抗压强度,分析了地聚物组成对固化黄土试块抗冻性能的影响。结果表明:地聚物固化黄土试块的最大干密度均小于素黄土;掺入适量地聚物能够有效提升黄土的抗冻性能,且固化黄土的无侧限抗压强度均大于素黄土,最高可达0.7 MPa;随着赤泥掺量增大,固化黄土试块的无侧限抗压强度降低;随着冻融次数增加,固化黄土试块的无侧限抗压强度先减小后增加,最终趋于稳定。

关键词: 地聚物固化黄土, 水玻璃, 含水率, 冻融循环, 无侧限抗压强度

Abstract: In this paper, the maximum dry density and optimum content of geopolymer solidified loess under different red mud content, water glass modulus and water glass content were obtained by compaction test. Based on the optimum moisture content results, the test blocks were made and the freeze-thaw cycle test of geopolymer solidified loess was carried out. The mass loss and unconfined compressive strength of solidified loess test block were tested, and the influence of geopolymer composition on frost resistance of solidified loess test block was analyzed. The results show that the maximum dry density of geopolymer solidified loess test block is smaller than that of plain loess. Adding an appropriate amount of geopolymer can effectively improve the frost resistance of loess, and the unconfined compressive strength of solidified loess is greater than that of plain loess, up to 0.7 MPa. With the increase of red mud content, the unconfined compressive strength of solidified loess test block decreases. With the increase of freeze-thaw cycles, the unconfined compressive strength of solidified loess test block decreases first and then increases, and finally tends to be stable.

Key words: geopolymer solidified loess, sodium silicate, moisture content, freeze-thaw cycle, unconfined compressive strength

中图分类号:

TU444

郭强, 张晓雷, 史晨曦, 门杰. 赤泥-矿渣基地聚物固化黄土冻融后力学特性研究[J]. 硅酸盐通报, 2024, 43(4): 1482-1489.

GUO Qiang, ZHANG Xiaolei, SHI Chenxi, MEN Jie. Mechanical Properties of Red Mud-Slag Based Geopolymer Solidified Loess after Freeze-Thaw Cycle[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(4): 1482-1489.

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