多元固废碱激发胶凝材料收缩行为研究进展
DOI:
https://doi.org/10.70693/cjst.v2i3.2051Keywords:
工业固废；胶凝材料；自由收缩；约束收缩；应力Abstract
利用工业固废（粉煤灰与高炉矿渣）替代传统硅酸盐水泥制备新型低碳胶凝材料已成为建材领域实现“双碳”目标的重要技术路径。然而，碱激发材料在硬化过程中存在早龄期收缩变形大、约束状态下体积稳定性差缺陷，已成为限制其大规模应用的瓶颈。本文系统研究了多元固废碱激发材料的自由收缩与约束收缩行为、关键影响因素及其对体积稳定性的作用机制。在自由收缩方面，对比了接触法与非接触法的测试原理，揭示了基于化学收缩、自干燥效应及毛细管张力理论的物理化学机制；在约束收缩方面，本文对比并厘清了典型约束评估方法（平板法、圆环法、椭圆环法及外方内圆偏心约束法）的物理机制、应力分布特征及适用范围。进一步阐明了废旧轮胎橡胶颗粒、前驱体、功能外掺料对收缩与抗裂性能的调控规律及微观机制，为材料收缩行为的可控调节与性能协同优化提供理论支撑与实践路径。
References
[1] 顾晓薇, 葛晓伟, 刘少迁, 等. 煤气化渣理化特性及其制备建筑材料研究进展[J]. 煤炭科学技术, 2025, 53(6): 29-45.
[2] Fu Q, Bu M, Zhang Z, et al. Hydration characteristics and microstructure of alkali-activated slag concrete: a review[J]. Engineering, 2023, 20: 162-179.
[3] Song N, Bai Y, Qian L, et al. Synergy of superabsorbent polymer and nano-silica in alkali-activated slag/fly ash-based concrete: Shrinkage mitigation and cracking resistance mechanism[J]. Construction and Building Materials, 2026, 518: 145840.
[4] 黄国栋, 江鹏, 韩正虎, 等. 弱碱激发建筑废粉性能演变机制：力学、凝结与流变特性研究[J]. 科学技术与工程, 2026, 26 (10) : 4364-4374.
[5] 顾晓薇, 王营, 孙殿兴, 等. 复合激发剂作用下矿渣− 钢渣胶凝体系的宏微观特性[J]. 煤炭科学技术, 2025, 53(8): 375-386.
[6] BaZant Z P, Wittmann F H. Creep and shrinkage concrete structures [M]. New York: John Wiley & Sons Ltd.,1982.
[7] Dhahir M K, Marx S, Shrinkage behaviour of high-strength concrete plates reinforced with carbon textile reinforcement [J]. Structures,2024, 69: 107504.
[8] Borito S M, Bo Z, Zhu H, et al. Experimental Investigation on the Restrained Shrinkage of Internally Cured Concrete with Combined Use of Superabsorbent Polymers, Nanosilica and Basalt fibers[J]. Case Studies in Construction Materials, 2026: 05736.
[9] Rong H, Dong W, Yuan W, et al. An improved ring test to assess cracking resistance of concrete under restrained shrinkage[J]. Theoretical and Applied Fracture Mechanics, 2021, 113: 102976.
[10] Shao J, Zhu H, Xue G, et al. Mechanical and restrained shrinkage behaviors of cement mortar incorporating waste tire rubber particles and expansive agent[J]. Construction and Building Materials, 2021, 296: 123742.
[11] Olayinka R, Jafari R, Fiset M. Shrinkage characteristics of geopolymer concrete: a comprehensive review[J]. Materials, 2025, 18(19): 4528.
[12] Azunna S U, Abd Aziz F N A B, Al-Ghazali N A, et al. Review on the mechanical properties of rubberized geopolymer concrete[J]. Cleaner Materials, 2024, 11: 100225.
[13] Song N, Bai Y, Qian L, et al. Synergy of superabsorbent polymer and nano-silica in alkali-activated slag/fly ash-based concrete: Shrinkage mitigation and cracking resistance mechanism[J]. Construction and Building Materials, 2026, 518: 145840.
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