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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (9): 3027-3042.DOI: 10.16552/j.cnki.issn1001-1625.2026.0280

• 水泥混凝土 • 上一篇    下一篇

盾构隧道抗硫酸盐侵蚀双液注浆材料性能及微结构演变

邹颖杰1,2(), 李化建1,2(), 黄法礼1,2, 冯俊杰3, 石贺男1,2, 董昊良1,2, 易忠来1,2   

  1. 1.中国铁道科学研究院集团有限公司铁道建筑研究所,北京 100081
    2.高速铁路轨道系统全国重点实验室,北京 100081
    3.中铁十四局集团房桥有限公司,北京 102000
  • 收稿日期:2026-03-25 修订日期:2026-05-07 出版日期:2026-09-15 发布日期:2026-10-09
  • 通信作者: 李化建,博士,研究员。E-mail:chinasailor@163.com
  • 作者简介:邹颖杰(2000—),男,博士研究生。主要从事高铁土木工程材料及其耐久性方面的研究。E-mail:zyj10281030@163.com
  • 基金资助:
    国家自然科学基金重点项目(52438002);中国国家铁路集团有限公司科技研究开发计划(J2024G004);新基石科学基金会科学探索奖

Performance and Microstructure Evolution of Sulfate-Resistant Double-Liquid Grouting Material for Shield Tunnel

ZOU Yingjie1,2(), LI Huajian1,2(), HUANG Fali1,2, FENG Junjie3, SHI Henan1,2, DONG Haoliang1,2, YI Zhonglai1,2   

  1. 1.Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China
    2.State Key Laboratory of High Speed Railway Track System,Beijing 100081,China
    3.China Railway 14th Bureau Group Fangqiao Co. ,Ltd. ,Beijing 102000,China
  • Received:2026-03-25 Revised:2026-05-07 Published:2026-09-15 Online:2026-10-09

摘要:

为应对地下水中硫酸盐对盾构隧道注浆材料的侵蚀问题,研发了抗硫酸盐侵蚀双液注浆材料。研究了水胶比(w/b)、磨细高炉矿渣(GGBS)掺量和A、B液体积比(A液为胶凝材料浆体,B液为硅酸钠溶液)对双液注浆材料工作性能、力学性能、抗硫酸盐侵蚀性能的影响规律,并结合XRD、SEM-EDS、TG-DTG和FTIR揭示了抗硫酸盐侵蚀性能提升机理。结果表明,该注浆材料流动性良好,28 d抗压强度为9.38~17.17 MPa,耐蚀系数超过0.8,在满足施工流动性要求的同时具有优异的力学性能和抗硫酸盐侵蚀性能。GGBS掺量对注浆材料抗压强度及其耐蚀系数的影响最显著,其原因是GGBS发挥填料效应和火山灰活性,生成更多C-S-H凝胶,促进致密微结构形成,提升力学性能。通过降低w/b和提高GGBS掺量可促进物理屏障形成阻滞外部SO42- 迁移扩散,同时促进C-S-H有效吸附SO42-,提升注浆材料的抗硫酸盐侵蚀性能。

关键词: 盾构隧道, 抗硫酸盐侵蚀, 双液注浆材料, 填料效应, 火山灰活性, 物理屏障

Abstract:

In order to deal with the erosion of sulfate in groundwater to the grouting material of shield tunnel, a sulfate-resistant double-liquid grouting material was developed. The effects of water-binder ratio (w/b), ground granulated blast furnace slag (GGBS) content and liquid volume ratio of A and B (liquid A is cementitious material slurry, liquid B is sodium silicate solution) on the working performance, mechanical properties and sulfate resistance of double-liquid grouting materials were studied. The mechanism of sulfate resistance improvement was revealed by XRD, SEM-EDS, TG-DTG and FTIR. The results show that the grouting material has good fluidity, the 28 d compressive strength is 9.38 MPa to 17.17 MPa, and the corrosion resistance coefficient is more than 0.8. It has excellent mechanical properties and sulfate resistance while meeting the requirements of construction fluidity. The content of GGBS has the most significant effect on the compressive strength and corrosion resistance coefficient of grouting materials. The reason is that GGBS exerts filler effect and pozzolanic activity to consume Ca(OH)2 to form more C-S-H gel, which promotes the formation of dense microstructure and improves mechanical properties. Reducing w/b and increasing GGBS content can promote the formation of physical barrier to block the migration and diffusion of external SO42-, and promote the effective adsorption of SO42- by C-S-H, thereby improving the sulfate resistance of grouting material.

Key words: shield tunnel, sulfate-resistant, double-liquid grouting material, filler effect, volcanic ash activity, physical barrier

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