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山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (4): 122-130.doi: 10.6040/j.issn.1672-3961.0.2023.192

• 土木工程 • 上一篇    

海水环境下硫酸盐侵蚀钙质砂注浆体试验研究

孙悦1,张文亮2,张建鹏3*,王蕾4,李鹏1,杨飞宇1,何灵垚1   

  1. 1.中国海洋大学工程学院, 山东 青岛 266404;2.山东高速集团有限公司创新研究院, 山东 济南 250101;3.青岛绿城华川置业有限公司, 山东 青岛 266199;4.中铁十六局第三工程有限公司, 浙江 湖州 313002
  • 发布日期:2024-08-20
  • 作者简介:孙悦(1999— ),女,山东济宁人,硕士研究生,主要研究方向为钙质砂地基加固与侵蚀弱化机理. E-mail:17861509115@163.com. *通信作者简介:张建鹏(1989— ),男,山东济南人,工程师,硕士,主要研究方向为地下建筑施工及材料研发. E-mail:569031356@qq.com
  • 基金资助:
    国家自然科学基金面上资助项目(52279115)

Experimental study on sulfate erosion of calcareous sand grouting in seawater environment

SUN Yue1, ZHANG Wenliang2, ZHANG Jianpeng3*, WANG Lei4, LI Peng1, YANG Feiyu1, HE Lingyao1   

  1. 1. College of Engineering, Ocean University of China, Qingdao 266404, Shandong, China;
    2. Shandong High-Speed Group Co., Ltd., Innovation Research Institute, Jinan 250101, Shandong, China;
    3. Qingdao Greentown Huachuan Real Estate Co., Ltd., Qingdao 266199, Shandong, China;
    4. Third Engineering Co., Ltd., China Railway 16th Bureau, Huzhou 313002, Zhejiang, China
  • Published:2024-08-20

摘要： 为研究硫酸根离子侵蚀效应对钙质砂吹填岛礁注浆加固钙质砂地基服役性能的影响,采用耦合温度和离子浓度的加速侵蚀方法,基于海水侵蚀试验装置开展不同水泥类型、侵蚀时间、水灰比条件下硫酸根离子对于注浆结石体性能的弱化试验。获得海水中硫酸根离子对注浆结石体力学性能及渗透性能的影响规律,并对侵蚀后的注浆结石体进行微观测试,揭示硫酸根离子对钙质砂注浆结石体的侵蚀弱化机理。试验结果表明,硫酸根离子渗透注浆结石体内部与水化反应产物发生反应生成石膏以及钙矾石等产物引发注浆结石体发生侵蚀破坏,而动水环境会加剧硫酸根离子对注浆结石体的侵蚀弱化效应,动水侵蚀组结石体在侵蚀时间为3.28 a时,抗压强度为5.41 MPa,较淡水对照组降低23.9%;渗透系数为7.159×10-5 cm/s,较淡水对照组增大6.691×10-5 cm/s。

关键词: 钙质砂, 注浆加固, 硫酸根离子, 动水环境, 侵蚀弱化

中图分类号: 

  • TU52
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