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Application of Alkali-Activated Cementitious Materials Made of All Solid Wastes in Waterproof Curtains
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摘要: 为减缓生产水泥带来的资源和能源的高消耗和环境污染等问题,采用电石渣、矿渣制备全固废碱激发胶凝材料全替代水泥,开展旋喷桩止水帷幕施工试验,研究不同配比的全固废胶凝材料的施工性、透水性以及强度特性,并与水泥对比。结果表明:相比于水泥的施工,全固废碱激发胶凝材料在施工中须加大喷嘴直径、保持原状电石渣含水率以防止堵管的发生;施工后通过开挖基坑察验均无渗漏情况,符合设计要求,且使用全固废碱激发胶凝材料施工的旋喷桩止水帷幕渗透系数略小于水泥止水帷幕;电石渣与矿渣按照2∶1配比等量替代水泥施工的止水帷幕其强度小于水泥止水帷幕,但当电石渣与矿渣为1∶1时,全固废碱激发胶凝材料旋喷桩止水帷幕的早期强度略高于水泥止水帷幕,后期强度则远高于水泥止水帷幕。Abstract: To mitigate a series of issues accompanied by cement production such as high consumption of natural resources and energy and environmental pollution, calcium carbide residues (CCR) and ground granulated blast-furnace slag (GGBS) were designed to develop alkali-activated cementitious materials made from all solid wastes, which could totally replace cement. A test for waterproof curtains by the jet grouting method with the alkali-activated cementitious material made from all solid wastes was conducted. The workability, water permeability and strength characteristics of alkali-activated cementitious material made from all solid wastes with different proportions were studied. The test results indicated that compared with using cement, when alkali-activated cementitious materials made from all solid wastes were adopted, the nozzle diameter of jet grouting machines should be increased and the water content of undisturbed CCR should be maintained to keep the pipeline unblocked during construction. Excavation inspection after jet grouting found that there was no leakage on the curtain and the curtain met the design requirements, and the permeability coefficient of the waterproof curtain made from alkali-activated cementitious materials was slightly smaller than that made of cement. The strength of waterproof curtains jet grouted with the alkali-activated cementitious material made from calcium carbide residues and ground granulated blast-furnace slag in the mix proportion of 1∶2 was less than jet grouted with cement. However, when the calcium carbide residue and ground granulated blast-furnace slag in the mix proportion of 1∶1, the strength of curtains at early ages was slightly higher than that jet grouted with cement, the strength was significantly higher at later ages.
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[1] JAMES R, KAMRUZZAMAN A H M, HAQUEAND A, et al. Behaviors of lime-slag-treated clay[J]. Ground Improvement, 2008, 161(4):207-216. [2] JEGANDAN S, LISKA M, OSMAN A A-M, et al. Sustainable binders for soil stabilization[J]. Ground Improvement, 2010, 163(1):53-61. [3] NIDZAM R M, KINUTHIA J M. Sustainable soil stabilisation with blastfurnace slag:a review[J]. Proceedings of the Institution of Civil Engineers-Construction Materials, 2010, 163(3): 157-165. [4] KIOUPIS D, TSIVILIS S, KAKALI G. Development of green building materials through alkali activation of industrial wastes and by-products[J]. Materials Today: Proceedings, 2018, 5(14): 27329-27336. [5] 庄心善, 王功勋, 田苾. 含工业废料加固土的特性研究[J]. 土木工程学报, 2005, 38(8):114-117. [6] 方祥位, 孙树国, 陈正汉, 等. GT型土壤胶凝材料改良土的工程特性研究[J]. 岩土力学, 2006, 27(9):1545-1548. [7] HUANG X, LI Z G, NING J G, et al. Principle and method of optimization design for soft soil stabilizer[J]. Journal of Wuhan University of Technology:Material Science, 2009, 24(1):154-160. [8] 王悠悠, 袁浩, 谌世英.固废制备碱激发胶凝材料配比研究[J/OL].化工矿物与加工[2022-10-21].http://kns.cnki.net/kcms/detail/32.1492.TQ.20220225.1701.010.html. [9] 万宗华, 张文芹, 刘志超, 等.电石渣-矿渣复合胶凝材料性能研究[J].硅酸盐通报, 2022, 41(5):1704-1714. [10] 倪文, 李颖, 许成文, 等.矿渣-电炉还原渣全固废胶凝材料的水化机理[J].中南大学学报(自然科学版), 2019, 50(10):2342-2351. [11] LI W T, YI Y L, Puppala A J. Utilization of carbide slag-activated ground granulated blastfurnace slag to treat gypseous soil[J]. Soils and Foundations, 2019, 59(5): 1496-1507. [12] 何俊, 栗志翔, 石小康, 等.侵蚀环境中碱渣-矿渣固化淤泥的力学性质[J].水文地质工程地质, 2019, 46(6):83-89. [13] 王东星, 王宏伟, 王瑞红.活性MgO-粉煤灰固化淤泥微观机制研究[J].岩石力学与工程学报, 2019, 38(增刊2):3717-3725. [14] 安强, 潘慧敏, 赵庆新, 等.碱激发赤泥-粉煤灰-电石渣复合材料性能研究[J/OL].建筑材料学报[2022-10-21].http://kns.cnki.net/kcms/detail/31.1764.TU.20220306.1805.004.html. 1-10. [15] 栗培龙, 朱德健, 裴仪, 等.电石渣稳定土强度特性影响因素分析[J].科学技术与工程, 2022, 22(6):2485-2490. [16] 易耀林, 李晨, 孙川, 等.碱激发矿粉固化连云港软土试验研究[J].岩石力学与工程学报, 2013, 32(9):1820-1826. [17] 武亚磊. 全固废胶凝材料研制与固化/稳定化机理及重金属污染场地修复应用研究[D]. 青岛: 中国海洋大学, 2022. [18] WU Y L, YANG J J, LI S C, et al. Experimental Study on Mechanical Properties and Micro-Mechanism of All-Solid-Waste Alkali Activated Binders Solidified Marine Soft Soil[J]. Materials Science Forum, 2021, 1036: 327-336. [19] 武亚磊, 杨俊杰. 土体固化剂:材料·作用机理·应用[M]. 北京: 化学工业出版社, 2022. [20] 张吉庆, 武亚磊, 杨俊杰, 等.全固废胶凝材料在基坑支护中的应用研究[J].工程勘察, 2022, 50(8):7-12. -
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