文献类型：期刊文献

英文题名：Alkali-Activated Polymers for Grouting: A Review of Mechanisms, Performance, and Engineering Applications

作者：Liu, Beining Xu, Mengtang

第一作者：Liu, Beining

通信作者：Xu, MT[1]

机构：[1]Yangzhen Area Off Shunyi Dist, Beijing 101309, Peoples R China;[2]Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China;[3]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：Yangzhen Area Off Shunyi Dist, Beijing 101309, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2026

卷号：18

期号：5

外文期刊名：POLYMERS

收录：;EI(收录号：20261120279225);Scopus(收录号：2-s2.0-105032728518);WOS:【SCI-EXPANDED(收录号:WOS:001713544900001)】；

语种：英文

外文关键词：alkali-activated polymers; grouting; reaction mechanism; mechanical property

摘要：Under dual challenges of global infrastructure expansion and industrial solid waste management, alkali-activated polymers (AAP), as industrial solid-waste-based low-carbon cementitious materials, exhibit immense potential in grouting engineering applications. This review synthesizes current research progress through three critical dimensions: reaction mechanisms, performance characteristics, and grouting applications (grouting for reinforcement and water-blocking). The reaction mechanism universally comprises three stages: dissolution, depolymerization, and polycondensation. Key performance determinants include precursor composition (e.g., slag, fly ash, metakaolin) and alkaline activator properties (type, modulus, concentration). The multifunctional advantages of AAP are fundamentally governed by their microstructural evolution. Specifically, the rapid formation of highly cross-linked C-(A)-S-H and N-A-S-H gels directly contributes to rapid setting and high early strength development, with high-calcium precursors such as slag exhibiting faster strength gain than low-calcium systems, such as fly ash and metakaolin. Furthermore, the absence of vulnerable calcium hydroxide phases, combined with a densified, low-porosity aluminosilicate network, provides superior thermal stability, corrosion resistance, frost durability, and low permeability. Nevertheless, pronounced autogenous shrinkage and drying shrinkage, driven by mesopore moisture loss and the highly viscoelastic solid skeleton, remain primary constraints for field implementation. In grouting reinforcement, AAP can effectively enhance the strength and structural integrity of weak soils, such as soft clay, loess, and sulfate-rich saline soils. For grouting water-blocking, particularly in sodium-silicate-based binary systems, AAP achieves rapid gelation, superior washout resistance, and high anti-seepage pressure, proving optimal for groundwater inflow control. Future research must prioritize (i) standardized mix design protocols for performance consistency, (ii) advanced shrinkage mitigation strategies, (iii) systematic durability assessment under coupled environmental stressors (e.g., wet-dry cycling, chemical attack, thermal fatigue), and (iv) cross-disciplinary collaboration for industrial-scale validation.