干湿循环下稻草秸秆-聚乙烯醇增强粉质黏土强度特性与微观机理

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (7): 2630-2639.

所属专题：资源综合利用

干湿循环下稻草秸秆-聚乙烯醇增强粉质黏土强度特性与微观机理

汪锦东¹, 罗梦婷¹, 鹿庆蕊¹, 王秋哲², 李栋伟³

1.东华理工大学土木与建筑工程学院,南昌 330013;
2.江苏商贸职业学院建筑工程与管理学院,南通 226000;
3.大连大学建筑工程学院,大连 116622

收稿日期:2023-11-22 修订日期:2024-02-06 出版日期:2024-07-15 发布日期:2024-07-24
通信作者: 鹿庆蕊,博士,副教授。E-mail:610766525@qq.com
作者简介:汪锦东(2000—),男,硕士研究生。主要从事岩土与地下工程的研究。E-mail:jindong_W@163.com
基金资助:
国家自然科学基金(42061011,41977236,52168044);江西省重点研发项目(20232BBE50025,20223BBG71W01);江西省核资源与环境国家重点实验室开放基金项目(NR1930);江西省教育厅科技项目(GJJ2200702);南通市自然科学基金青年基金项目(JC2023026)

Strength Characteristics and Micro Mechanism of Straw-Polyvinyl Alcohol Reinforced Silty Clay under Dry-Wet Cycle

WANG Jindong¹, LUO Mengting¹, LU Qingrui¹, WANG Qiuzhe², LI Dongwei³

1. School of Architectural Engineering, East China University of Technology, Nanchang 330013, China;
2. School of Construction Engineering and Management, Jiangsu Vocational College of Business, Nantong 226000, China;
3. College of Civil Engineering and Architecture, Dalian University, Dalian 116622, China

Received:2023-11-22 Revised:2024-02-06 Online:2024-07-15 Published:2024-07-24

摘要/Abstract

摘要： 工程建设中遇到黏土场地时往往需要用固化剂增强土体的力学性能,本文研究了干湿循环下稻草秸秆-聚乙烯醇(浓度分别为0%、0.5%、2.0%、3.0%、4.5%,质量分数)增强粉质黏土的力学特性,借助扫描电子显微镜试验和IPP软件进行了微观分析。结果表明,在不同干湿循环次数下,当聚乙烯醇浓度为2%时,聚乙烯醇(PVA)溶液填充孔隙,包裹土颗粒,土体力学性能最佳。

关键词: 聚乙烯醇, 稻草秸秆, 粉质黏土, 干湿循环, 微观结构, 力学性能

Abstract: Curing agent is often used to enhance the mechanical properties of soil when clay sites are encountered in engineering construction. In this paper, the mechanical properties of silty clay reinforced by straw-polyvinyl alcohol (0%, 0.5%, 2.0%, 3.0%, 4.5%, mass fraction) under dry-wet cycle were studied. The microscopic analysis was carried out by means of electron microscope scanning test and IPP software. The results show that when the concentration of polyvinyl alcohol is 2%, the polyvinyl alcohol (PVA) solution fills the pores, wraps the soil particles, and the mechanical properties of soil are the best under different dry-wet cycles.

Key words: polyvinyl alcohol, straw, silty clay, dry-wet cycle, microstructure, mechanical property

中图分类号:

TU43

汪锦东, 罗梦婷, 鹿庆蕊, 王秋哲, 李栋伟. 干湿循环下稻草秸秆-聚乙烯醇增强粉质黏土强度特性与微观机理[J]. 硅酸盐通报, 2024, 43(7): 2630-2639.

WANG Jindong, LUO Mengting, LU Qingrui, WANG Qiuzhe, LI Dongwei. Strength Characteristics and Micro Mechanism of Straw-Polyvinyl Alcohol Reinforced Silty Clay under Dry-Wet Cycle[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(7): 2630-2639.

参考文献

[1] 冀慧, 张涛, 刘保健. 干湿循环下复合改良黄土剪切力学特性试验研究[J]. 长江科学院院报, 2021, 38(8): 120-126+132.
JI H, ZHANG T, LIU B J. Experimental study on shear mechanical properties of composite improved loess under wet and dry cycles[J]. Journal of Yangtze River Scientific Research Institute, 2021, 38(8): 120-126+132 (in Chinese).
[2] LAKE C B, YOUSIF M A M, JAMSHIDI R J. Examining freeze/thaw effects on performance and morphology of a lightly cemented soil[J]. Cold Regions Science and Technology, 2017, 134: 33-44.
[3] 文武, 庄心善, 赵奕杨, 等. PVA(聚乙烯醇)改良膨胀土强度性能试验研究[J]. 湖北工业大学学报, 2023, 38(1): 90-93.
WEN W, ZHUANG X S, ZHAO Y Y, et al. Experimental research on strength performance of PVA (polyvinyl alcohol) improved expansive soil[J]. Journal of Hubei University of Technology, 2023, 38(1): 90-93 (in Chinese).
[4] 彭宇, 张虎元, 林澄斌, 等. 抗疏力固化剂改性黄土工程性质及其改性机制[J]. 岩石力学与工程学报, 2017, 36(3): 762-772.
PENG Y, ZHANG H Y, LIN C B, et al. Engineering properties and improvement mechanism of loess soil modified by consolid system[J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36(3): 762-772 (in Chinese).
[5] ZHANG B W, JIANG W, XU Q Z, et al. Experimental feasibility study of ethylene-vinyl acetate copolymer (EVA) as cement stabilized soil curing agent[J]. Road Materials and Pavement Design, 2022, 23(3): 617-638.
[6] 刘昭. 环氧树脂与竹条加固粉质黏土的力学性能研究[D]. 武汉: 湖北工业大学, 2021.
LIU Z. Mechanical properties of silty clay reinforced by epoxy resin and bamboo slices[D].Wuhan: Hubei University of Technology, 2021 (in Chinese).
[7] BU F, LIU J, MEI H, et al. Cracking behavior of sisal fiber-reinforced clayey soil under wetting-drying cycles[J]. Soil and Tillage Research, 2023, 227: 105596.
[8] HAFHOUF I, ABBECHE K. Impact of drying-wetting cycles on shear properties, suction, and collapse of sebkha soils[J]. Heliyon, 2023, 9(2): e13594.
[9] 朱燕, 余湘娟, 陈佳佳. 丙烯酸酯共聚乳液固化盐渍土的耐久性试验[J]. 扬州大学学报(自然科学版), 2022, 25(4): 59-65.
ZHU Y, YU X J, CHEN J J. Experimental study on the durability of acrylate copolymer emulsion cured saline soil[J]. Journal of Yangzhou University (Natural Science Edition), 2022, 25(4): 59-65 (in Chinese).
[10] 涂义亮, 刘新荣, 钟祖良, 等. 干湿循环下粉质黏土强度及变形特性试验研究[J]. 岩土力学, 2017, 38(12): 3581-3589.
TU Y L, LIU X R, ZHONG Z L, et al. Experimental study on strength and deformation characteristics of silty clay during wetting-drying cycles[J]. Rock and Soil Mechanics, 2017, 38(12): 3581-3589 (in Chinese).
[11] 李中尧, 李文炜, 史海平, 等. 聚乙烯醇改良高原黏土水稳定性实验研究[J]. 科学技术与工程, 2022, 22(3): 1205-1211.
LI Z Y, LI W W, SHI H P, et al. Experimental study on water stability of plateau clay improved by polyvinyl alcohol[J]. Science Technology and Engineering, 2022, 22(3): 1205-1211 (in Chinese).
[12] 魏俞涌, 钱少平, 姚文超, 等. 水稻秸秆不同部位剪切性能分析[J]. 农业工程, 2021, 11(8): 103-107.
WEI Y Y, QIAN S P, YAO W C, et al. Experiment and analysis of shearing property of rice straws[J]. Agricultural Engineering, 2021, 11(8): 103-107 (in Chinese).
[13] 王健, 吴义强, 李贤军, 等. 稻/麦秸秆资源化利用研究现状[J]. 林产工业, 2021, 58(1): 1-5.
WANG J, WU Y Q, LI X J, et al. Research status of resource utilization for rice and wheat straw[J]. China Forest Products Industry, 2021, 58(1): 1-5 (in Chinese).
[14] 杨玲. 改性稻草秸秆水泥基复合材料的性能研究[D]. 武汉: 武汉轻工大学, 2020.
YANG L. Research of modified straw cement-basedmaterials[D]. Wuhan: Wuhan Polytechnic University, 2020 (in Chinese).

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干湿循环下稻草秸秆-聚乙烯醇增强粉质黏土强度特性与微观机理

Strength Characteristics and Micro Mechanism of Straw-Polyvinyl Alcohol Reinforced Silty Clay under Dry-Wet Cycle

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