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地质聚合物固化土研究现状及展望
CSTR:
[cstr]
作者:
作者单位:

1.湘潭大学土木工程与力学学院;2.湖南大学土木工程学院

基金项目:

国家自然科学基金(51909086) ；湖南省教育厅优秀青年项目(21B0123)；中国水利水电科学研究院水利部水工程建设与安全重点实验室开放研究基金(202109)


Research status and prospect of geopolymer solidified soil
Author:
Affiliation:

1.College of Civil Engineering and Mechanics;2.Xiangtan University;3.College of Civil Engineering;4.Hunan University

Fund Project:

National Natural Science Foundation of China (NO.51909086)；Outstanding Youth Project of Hunan Education Department(NO.21B0123)；Open Research Fund of Key Laboratory of Water Engineering Construction and Safety of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research(NO.202109)

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  • 参考文献 [94]
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    摘要:

    地质聚合物（Geopolymer）作为一种新兴的土壤固化剂，是一类以富硅铝酸盐矿物为前驱体，在碱激发剂作用下形成的绿色无机胶凝材料，具有力学性能良好、耐久性优异以及低碳环保等优点，能够有效克服水泥/石灰等传统土壤固化剂能耗高、污染大以及耐久性差等缺点，被国内外学者普遍认为是传统土壤固化剂的理想替代品。为明确地质聚合物对土壤的加固机理和增强效果，本文回顾了近年来地质聚合物固化土的研究进展。首先介绍了地质聚合物固化土的反应机理；其次详述了不同因素对地质聚合物固化土无侧限抗压强度和抗剪强度等力学性能的影响研究；然后讨论了地质聚合物固化土在冻融循环、干湿循环以及化学离子侵蚀等作用下的耐久性；最后对地质聚合物固化土技术未来发展方向进行了展望。

    Abstract:

    Geopolymer, as a new soil solidification agent, is a kind of green inorganic cementitious material formed by aluminosilicate-rich minerals as precursors under the action of alkali activators. It is equipped with the advantages of good mechanical properties, excellent durability, low carbon and environmental friendly, etc. It can effectively overcome the disadvantages of high energy consumption, high pollution and poor durability of traditional soil solidification agent such as cement or lime, and is generally considered as an ideal substitute for traditional soil solidification agent by scholars at home and abroad. In order to clarify the solidification mechanism and reinforcement effect of geopolymers on soil, the research progress of geopolymer solidified soil in recent years is reviewed in this paper. Firstly, the reaction mechanism of geopolymer solidified soil is introduced; secondly, the influence of different factors on the mechanical properties such as unconfined compressive strength and shear strength of geopolymer solidified soil is described in detail; then the durability of geopolymer solidified soil under freeze-thaw cycle, dry-wet cycle and chemical ion erosion is discussed; finally, the future development direction of geopolymer solidified soil technology is prospected.

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  • 收稿日期:2022-05-02
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