地质聚合物强化增韧方法研究综述

沙东; 王宝民; 潘宝峰; 包超

doi:10.13801/j.cnki.fhclxb.20230911.003

地质聚合物强化增韧方法研究综述

doi: 10.13801/j.cnki.fhclxb.20230911.003

沙东¹,
王宝民²,
潘宝峰^2, ,,
包超¹

1.
宁夏大学　土木与水利工程学院，银川 750021
2.
大连理工大学　建设工程学部，大连 116024

基金项目: 国家自然科学基金联合基金重点支持项目(U20A20324)；国家自然科学基金面上项目(52272016)；宁夏大学产教融合研究生联合培养示范基地建设项目(SFJD202210)

详细信息

通讯作者:
潘宝峰，博士，教授，博士生导师，研究方向为固废绿色建材化利用、道路工程新材料研发与应用　E-mail: panbf@dlut.edu.cn

中图分类号: TU528；TB333
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- 文章访问数: 443
- HTML全文浏览量: 232
- PDF下载量: 39
- 被引次数: 0
出版历程
- 收稿日期: 2023-06-28
- 修回日期: 2023-08-14
- 录用日期: 2023-08-31
- 网络出版日期: 2023-09-12
- 刊出日期: 2024-03-01

A review on reinforcing and toughening methods of geopolymers

1.
School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
2.
Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China

Funds: Joint Funds of National Natural Science Foundation of China (U20A20324); National Natural Science Foundation of China (52272016); Construction Project of Postgraduate Joint Training Demonstration Base for Industry-Teaching Integration at Ningxia University (SFJD202210)

摘要

摘要: 基于优异的力学性能、良好的耐久性及低碳环保的合成特点，地质聚合物被视为最有可能替代硅酸盐水泥的新型胶凝材料。然而，目前地质聚合物还存在一些缺陷：一方面，粉煤灰、煤矸石等钙含量较低的煤系固废只有在高温下才能获得较高的强度，而在室温条件下制备的地质聚合物强度较低；另一方面，地质聚合物存在脆性高、韧性低等缺点，严重制约了地质聚合物的大规模应用。本文综述了机械力化学作用，硅、铝、钙物质复掺，纤维、有机物改性对地质聚合物力学性能的影响和强化增韧的作用机制，并针对今后需要深入开展的相关研究提出建议。
- 地质聚合物 /
- 强化增韧 /
- 机械力化学作用 /
- 纤维 /
- 有机物 /
- 改性
Abstract: Due to the excellent mechanical properties, good durability, and low carbon and environmental friendly synthetic characteristics, geopolymers are considered as the most promising new cementitious materials to replace portland cement. Unfortunately, there are some defects in geopolymers: On the one hand, coal-based solid wastes with low calcium content such as fly ash and coal gangue can only obtain high strength cured at a high temperature, while the strength of geopolymers prepared at room temperature is low; On the other hand, geopolymers have disadvantages such as high brittleness and low toughness, which seriously restricts the large-scale application of geopolymers. In this study, the effects of mechanochemical effect, compounding of silicon, aluminum and calcium substances, fiber and organic matter modifications on the mechanical properties of geopolymers were reviewed, and the mechanisms of strengthening and toughening were also summarized. Finally, some suggestions were made for related studies that needs to be carried out in depth in the future.
- geopolymers /
- reinforcing and toughening /
- mechanochemical effect /
- fibers /
- organics /
- modification

HTML全文

图 1 不同机械力化学作用下粉煤灰在碱性环境下Al、Si的溶出量^[21]

Figure 1. Dissolution amount of Al and Si of fly ash under different mechanochemical effects in alkaline environment^[21]

RCFA, CFA8, CFA23—Raw fly ash, mechanically ball milled fly ash for 8 min and 23 min, respectively

下载: 全尺寸图片幻灯片

图 2 碱激发粉煤灰/水泥体系凝胶产物CaO-Al₂O₃-SiO₂三元相图^[49]

C-A-S-H—Calcium aluminate hydrate; C-S-H—Calcium silicate hydrate; N-A-S-H—Sodium aluminosilicate hydrate; FA—Fly Ash; OPC—Cement

Figure 2. Ternary phase diagram of gels projected onto CaO-Al₂O₃-SiO₂ in alkali-excited fly ash/cement system^[49]

下载: 全尺寸图片幻灯片

图 3 纤维强化增韧机制^[66]

Figure 3. Reinforcing and toughening mechanisms of fibers^[66]

下载: 全尺寸图片幻灯片

图 4 聚丙烯酸酯改性偏高岭土基地质聚合物介观结构^[76]

Figure 4. Mesoscopic structures of metakaolin-based geopolymers modified by polyacrylate^[76]

下载: 全尺寸图片幻灯片

图 5 有机物的种类和含量对试件孔径分布的影响^[72]

Figure 5. Effects of the type and content of organic matter on the pore size distribution of specimens^[72]

PAAS, PAM, PEG and Blank—Sodium polyacrylate, polyacrylamide, polyethylene glycol and control group, respectively

下载: 全尺寸图片幻灯片

参考文献(81)

[1]	SEKKAL W, ZAOUI A. Thermal and acoustic insulation properties in nanoporous geopolymer nanocomposite[J]. Cement and Concrete Composites, 2023, 138: 104955. doi: 10.1016/j.cemconcomp.2023.104955
[2]	FERNÁNDEZ-JIMÉNEZ A, PALOMO A, CRIADO M. Microstructure development of alkali-activated fly ash cement: A descriptive model[J]. Cement and Concrete Research, 2004, 35(6): 1204-1209.
[3]	AZIZ A, FELAOUS K, ALOMAYRI T, et al. A state-of-the-art review of the structure and properties of laterite-based sustainable geopolymer cement[J]. Environmental Science and Pollution Research, 2023, 30(19): 54333-54350. doi: 10.1007/s11356-023-26495-3
[4]	LIU Q, CUI M Y, LI X C, et al. Alkali-hydrothermal activation of mine tailings to prepare one-part geopolymer: Activation mechanism, workability, strength, and hydration reaction[J]. Ceramics International, 2022, 48(20): 30407-30417. doi: 10.1016/j.ceramint.2022.06.318
[5]	BOMPA D, XU B, CORBU O C. Evaluation of one-part slag-fly-ash alkali-activated mortars incorporating waste glass powder[J]. Journal of Materials in Civil Engineering, 2022, 34(12): 05022001. doi: 10.1061/(ASCE)MT.1943-5533.0004532
[6]	SHI Y, ZHAO Q, XUE C, et al. Preparation and curing method of red mud-calcium carbide slag synergistically activated fly ash-ground granulated blast furnace slag based eco-friendly geopolymer[J]. Cement and Concrete Composites, 2023, 139: 104999. doi: 10.1016/j.cemconcomp.2023.104999
[7]	卢佳涛, 孔丽娟, 樊子瑞, 等. 铁尾矿砂-地聚物复合材料的界面与性能[J]. 建筑材料学报, 2022, 25(6): 585-590, 606. doi: 10.3969/j.issn.1007-9629.2022.06.006 LU Jiatao, KONG Lijuan, FAN Zirui, et al. Interface and performance of iron tailings-geopolymer composites[J]. Journal of Building Materials, 2022, 25(6): 585-590, 606(in Chinese). doi: 10.3969/j.issn.1007-9629.2022.06.006
[8]	BRANDVOLD A S, TRINDADE A C C, KRIVEN W M. Rheological assessment of metakaolin-based geopolymer composites through squeeze flow[J]. Journal of the American Ceramic Society, 2023, 106(7): 4038-4051. doi: 10.1111/jace.18564
[9]	FAN L F, DING H, ZHONG W L, et al. A rapid approach for determining the mechanical properties of geopolymer concrete based on image processing technology (IPT)[J]. Construction and Building Materials, 2023, 378: 131165. doi: 10.1016/j.conbuildmat.2023.131165
[10]	万小梅, 刘杰, 朱亚光, 等. 粉煤灰用量和早期养护温度对EGC拉伸性能的影响[J]. 建筑材料学报, 2022, 25(4): 401-407. doi: 10.3969/j.issn.1007-9629.2022.04.011 WAN Xiaomei, LIU Jie, ZHU Yaguang, et al. Influence of fly ash content and early curing temperature on tensile performance of EGC[J]. Journal of Building Materials, 2022, 25(4): 401-407(in Chinese). doi: 10.3969/j.issn.1007-9629.2022.04.011
[11]	田青, 屈孟娇, 张苗, 等. 废弃混凝土再生微粉激活方式研究进展[J]. 硅酸盐通报, 2020, 39(8): 2476-2485. doi: 10.16552/j.cnki.issn1001-1625.2020.08.015 TIAN Qing, QU Mengjiao, ZHANG Miao, et al. Research progress on activation way of recycled powder of waste concrete[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(8): 2476-2485(in Chinese). doi: 10.16552/j.cnki.issn1001-1625.2020.08.015
[12]	王晓钧. 粉煤灰机械研磨中物理与机械力化学现象的研究[D]. 南京: 南京工业大学, 2003. WANG Xiaojun. Study on mechanical-chemistry and physical properties of mechanically ground fly ash[D]. Nanjing: Nanjing University of Technology, 2003(in Chinese).
[13]	李娜, 徐中慧, 李萍, 等. 机械力活化粉煤灰制备地聚合物的性能及机理研究[J]. 功能材料, 2018, 49(4): 4102-4106. LI Na, XU Zhonghui, LI Ping, et al. Mechanical activation of fly ash: Effect on performance and mechanism of resulting geopolymer[J]. Journal of Functional Materials, 2018, 49(4): 4102-4106(in Chinese).
[14]	SHA D, PAN B, SUN Y. A novel raw material for geopolymers: Coal-based synthetic natural gas slag[J]. Journal of Cleaner Production, 2020, 262: 121238. doi: 10.1016/j.jclepro.2020.121238
[15]	杨南如. 机械力化学过程及效应(Ⅰ)-机械力化学效应[J]. 建筑材料学报, 2000, 3(1): 19-26. doi: 10.3969/j.issn.1007-9629.2000.01.004 YANG Nanru. Processes and effects of mechanochemistry(Ⅰ)-chemical effects of mechanochemistry[J]. Journal of Building Materials, 2000, 3(1): 19-26(in Chinese). doi: 10.3969/j.issn.1007-9629.2000.01.004
[16]	刘音, 刘洋, 周煜明, 等. 机械研磨时间对粗粉煤灰基充填胶凝材料性能的影响[J]. 煤炭科学技术, 2017, 45(6): 221-225. doi: 10.13199/j.cnki.cst.2017.06.036 LIU Yin, LIU Yang, ZHOU Yuming, et al. Mechanical grinding time affected to performances of reject fly ash-based backfill binding material[J]. Coal Science and Technology, 2017, 45(6): 221-225(in Chinese). doi: 10.13199/j.cnki.cst.2017.06.036
[17]	刘春琦, 马天, 李钊, 等. 天然矿物的机械力化学活化改性研究进展[J]. 金属矿山, 2021(10): 75-81. doi: 10.19614/j.cnki.jsks.202110011 LIU Chunqi, MA Tian, LI Zhao, et al. Research progress in the mechanochemical activation and modification of natural minerals[J]. Metal Mine, 2021(10): 75-81(in Chinese). doi: 10.19614/j.cnki.jsks.202110011
[18]	丁浩, 邢锋, 冯乃谦. 天然沸石搅拌磨湿法细磨中机械力化学效应的研究[J]. 矿产综合利用, 2000(6): 26-31. doi: 10.3969/j.issn.1000-6532.2000.06.007 DING Hao, XING Feng, FENG Naiqian. Study on mechano-chemical modification of mineral pigment and filler[J]. Multipurpose Utilization of Mineral Resources, 2000(6): 26-31(in Chinese). doi: 10.3969/j.issn.1000-6532.2000.06.007
[19]	崔孝炜, 冷欣燕, 南宁, 等. 机械力活化对钢渣粒度分布和胶凝性能的影响[J]. 硅酸盐通报, 2018, 37(12): 3821-3826. doi: 10.16552/j.cnki.issn1001-1625.2018.12.018 CUI Xiaowei, LENG Xinyan, NAN Ning, et al. Mechanical activation effect on the performance of steel slag particle size distribution and cementitious properties[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(12): 3821-3826(in Chinese). doi: 10.16552/j.cnki.issn1001-1625.2018.12.018
[20]	许晴. 机械力化学法活化粉煤灰固化含油钻屑技术研究[D]. 绵阳: 西南科技大学, 2016. XU Qing. Technology study on mechanochemistry activating the fly ash for solidifying the oil drilling cuttings[D]. Mianyang: Southwest University of Science and Technology, 2016(in Chinese).
[21]	李端乐. 掺超细循环流化床粉煤灰水泥的特性研究[D]. 北京: 中国矿业大学(北京), 2018. LI Duanle. Characteristics of cement with ultrafine circulating fluidized bed fly ash[D]. Beijing: China University of Mining and Technology (Beijing), 2018(in Chinese).
[22]	李萌, 周庆立, 白丽梅, 等. 机械力化学效应提高铁尾矿活性实验研究[J]. 矿产综合利用, 2021(1): 179-185. doi: 10.3969/j.issn.1000-6532.2021.01.030 LI Meng, ZHOU Qingli, BAI Limei, et al. Experimental study on improving the activity of iron tailings by mechanochemical effect[J]. Multipurpose Utilization of Mineral Resources, 2021(1): 179-185(in Chinese). doi: 10.3969/j.issn.1000-6532.2021.01.030
[23]	赵越, 王晓岩, 苑文仪, 等. 机械力化学活化煤矸石一步制备高效混凝剂[J]. 矿产保护与利用, 2020, 40(1): 16-22. doi: 10.13779/j.cnki.issn1001-0076.2020.01.003 ZHAO Yue, WANG Xiaoyan, YUAN Wenyi, et al. Mechanochemical activated coal gangue one-step preparation of high-efficiency coagulant[J]. Conservation and Utilization of Mineral Resources, 2020, 40(1): 16-22(in Chinese). doi: 10.13779/j.cnki.issn1001-0076.2020.01.003
[24]	张超凡, 管学茂, 张海波, 等. 机械力化学改性钙基膨润土提高注浆材料的稳定性[J]. 材料导报, 2019, 33(20): 3408-3412. doi: 10.11896/cldb.18090282 ZHANG Chaofan, GUAN Xuemao, ZHANG Haibo, et al. Mechano-chemical modified calcium bentonite improves stability of grouting materials[J]. Materials Reports, 2019, 33(20): 3408-3412(in Chinese). doi: 10.11896/cldb.18090282
[25]	KATO K, XIN Y, HITOMI T, et al. Surface modification of fly ash by mechano-chemical treatment[J]. Ceramics International, 2019, 45(1): 849-853. doi: 10.1016/j.ceramint.2018.09.254
[26]	TCHAKOUTE KOUAMO H, ELIMBI A, MBEY J A, et al. The effect of adding alumina-oxide to metakaolin and volcanic ash on geopolymer products: A comparative study[J]. Construction and Building Materials, 2012, 35: 960-969. doi: 10.1016/j.conbuildmat.2012.04.023
[27]	REN X, ZHANG L, RAMEY D, et al. Utilization of aluminum sludge (AS) to enhance mine tailings-based geopolymer[J]. Journal of Materials Science, 2015, 50(3): 1370-1381. doi: 10.1007/s10853-014-8697-y
[28]	GARCÍA-LODEIRO I, CHERFA N, ZIBOUCHE F, et al. The role of aluminium in alkali-activated bentonites[J]. Materials and Structures, 2015, 48(3): 585-597. doi: 10.1617/s11527-014-0447-8
[29]	高巧玲, 范功端. 硅灰对新型地质聚合物胶凝材料力学性能影响的研究进展[J]. 武汉工程大学学报, 2020, 42(5): 540-545. doi: 10.19843/j.cnki.CN42-1779/TQ.202004008 GAO Qiaoling, FAN Gongduan. Effects of silica fume on mechanical properties of novel geopolymer-based cementitious materials: A brief review[J]. Journal of Wuhan Institute of Technology, 2020, 42(5): 540-545(in Chinese). doi: 10.19843/j.cnki.CN42-1779/TQ.202004008
[30]	GHARZOUNI A, OUAMARA L, SOBRADOS I, et al. Alkali-activated materials from different aluminosilicate sources: Effect of aluminum and calcium availability[J]. Journal of Non-Crystalline Solids, 2018, 484: 14-25. doi: 10.1016/j.jnoncrysol.2018.01.014
[31]	ARBI K, PALOMO A, FERNÁNDEZ-JIMÉNEZ A. Alkali-activated blends of calcium aluminate cement and slag/diatomite[J]. Ceramics International, 2013, 39(8): 9237-9245. doi: 10.1016/j.ceramint.2013.05.031
[32]	叶家元. 活化铝土矿选尾矿制备碱激发胶凝材料及其性能变化机制[D]. 北京: 中国建筑材料科学研究总院, 2015. YE Jiayuan. A geopolymer synthesized from calcined ore-dressing tailing of bauxite and the mechanism of performance evolution[D]. Beijing: China Building Materials Academy, 2015(in Chinese).
[33]	UYSAL M, AL-MASHHADANI M M, AYGÖRMEZ Y, et al. Effect of using colemanite waste and silica fume as partial replacement on the performance of metakaolin-based geopolymer mortars[J]. Construction and Building Materials, 2018, 176: 271-282. doi: 10.1016/j.conbuildmat.2018.05.034
[34]	KIM G W, OH T, KYUN LEE S, et al. Development of Ca-rich slag-based ultra-high-performance fiber-reinforced geopolymer concrete (UHP-FRGC): Effect of sand-to-binder ratio[J]. Construction and Building Materials, 2023, 370: 130630. doi: 10.1016/j.conbuildmat.2023.130630
[35]	ZHANG S, KEULEN A, ARBI K, et al. Waste glass as partial mineral precursor in alkali-activated slag/fly ash system[J]. Cement and Concrete Research, 2017, 102: 29-40. doi: 10.1016/j.cemconres.2017.08.012
[36]	SAMARAKOON M H, RANJITH P G, DE SILVA V R S. Effect of soda-lime glass powder on alkali-activated binders: Rheology, strength and microstructure characterization[J]. Construction and Building Materials, 2020, 241: 118013. doi: 10.1016/j.conbuildmat.2020.118013
[37]	CHEAH C B, TAN L E, RAMLI M. The engineering properties and microstructure of sodium carbonate activated fly ash/slag blended mortars with silica fume[J]. Composites Part B: Engineering, 2019, 160: 558-572. doi: 10.1016/j.compositesb.2018.12.056
[38]	LIU Y, SHI C, ZHANG Z, et al. An overview on the reuse of waste glasses in alkali-activated materials[J]. Resources, Conservation and Recycling, 2019, 144: 297-309. doi: 10.1016/j.resconrec.2019.02.007
[39]	HAJIMOHAMMADI A, NGO T, KASHANI A. Glass waste versus sand as aggregates: The characteristics of the evolving geopolymer binders[J]. Journal of Cleaner Production, 2018, 193: 593-603. doi: 10.1016/j.jclepro.2018.05.086
[40]	SI R, DAI Q, GUO S, et al. Mechanical property, nanopore structure and drying shrinkage of metakaolin-based geopolymer with waste glass powder[J]. Journal of Cleaner Production, 2020, 242: 118502. doi: 10.1016/j.jclepro.2019.118502
[41]	ALANAZI H, HU J, KIM Y. Effect of slag, silica fume, and metakaolin on properties and performance of alkali-activated fly ash cured at ambient temperature[J]. Construction and Building Materials, 2019, 197: 747-756. doi: 10.1016/j.conbuildmat.2018.11.172
[42]	ALCAMAND H A, BORGES P H R, SILVA F A, et al. The effect of matrix composition and calcium content on the sulfate durability of metakaolin and metakaolin/slag alkali-activated mortars[J]. Ceramics International, 2018, 44(5): 5037-5044. doi: 10.1016/j.ceramint.2017.12.102
[43]	MEHTA A, SIDDIQUE R, OZBAKKALOGLU T, et al. Fly ash and ground granulated blast furnace slag-based alkali-activated concrete: Mechanical, transport and microstructural properties[J]. Construction and Building Materials, 2020, 257: 119548. doi: 10.1016/j.conbuildmat.2020.119548
[44]	LYU B, GUO L, FEI X, et al. Preparation and properties of green high ductility geopolymer composites incorporating recycled fine brick aggregate[J]. Cement and Concrete Composites, 2023, 139: 105054. doi: 10.1016/j.cemconcomp.2023.105054
[45]	ABDOLLAHNEJAD Z, DALVAND A, MASTALI M, et al. Effects of waste ground glass and lime on the crystallinity and strength of geopolymers[J]. Magazine of Concrete Research, 2018, 71: 1-38.
[46]	HANJITSUWAN S, PHOO-NGERNKHAM T, DAMRONGWIRIYANUPAP N. Comparative study using Portland cement and calcium carbide residue as a promoter in bottom ash geopolymer mortar[J]. Construction and Building Materials, 2017, 133: 128-134. doi: 10.1016/j.conbuildmat.2016.12.046
[47]	HUANG G, JI Y, LI J, et al. Improving strength of calcinated coal gangue geopolymer mortars via increasing calcium content[J]. Construction and Building Materials, 2018, 166: 760-768. doi: 10.1016/j.conbuildmat.2018.02.005
[48]	SONG W, ZHU Z, PU S, et al. Multi-technical characterization and correlations between properties of standard cured alkali-activated high-calcium FA binders with GGBS as additive[J]. Construction and Building Materials, 2020, 241: 117996. doi: 10.1016/j.conbuildmat.2020.117996
[49]	GARCÍA-LODEIRO I, FERNÁNDEZ-JIMÉNEZ A, PALOMO A. Variation in hybrid cements over time: Alkaline activation of fly ash-Portland cement blends[J]. Cement and Concrete Research, 2013, 52: 112-122. doi: 10.1016/j.cemconres.2013.03.022
[50]	SUWAN T, FAN M. Influence of OPC replacement and manufacturing procedures on the properties of self-cured geopolymer[J]. Construction and Building Materials, 2014, 73: 551-561. doi: 10.1016/j.conbuildmat.2014.09.065
[51]	彭晖, 李一聪, 罗冬, 等. 碱激发偏高岭土/矿渣复合胶凝体系反应水平及影响因素分析[J]. 建筑材料学报, 2020, 23(6): 1390-1397. PENG Hui, LI Yicong, LUO Dong, et al. Analysis of reaction level and factors of alkali activated metakaolin/GGBFS[J]. Journal of Building Materials, 2020, 23(6): 1390-1397(in Chinese).
[52]	郭晓潞, 施惠生, 夏明. 不同钙源对地聚合物反应机制的影响研究[J]. 材料研究学报, 2016, 30(5): 348-354. doi: 10.11901/1005.3093.2015.558 GUO Xiaolu, SHI Huisheng, XIA Ming. Effect of different calcium resouces on reaction mechanism of geopolymer[J]. Chinese Journal of Materials Research, 2016, 30(5): 348-354(in Chinese). doi: 10.11901/1005.3093.2015.558
[53]	HUANG G, JI Y, ZHANG L, et al. Influence of calcium content on structure and strength of MSWI bottom ash-based geopolymer[J]. Magazine of Concrete Research, 2019, 71(7): 362-372. doi: 10.1680/jmacr.17.00542
[54]	RAJENDRAN M, BAKTHAVATCHALAM K, LEELA BHARATHI S M. Review on the hybridized application of natural fiber in the development of geopolymer concrete[J]. Journal of Natural Fibers, 2023, 20(1): 2178578. doi: 10.1080/15440478.2023.2178578
[55]	KORNIEJENKO K, FRĄCZEK E, PYTLAK E, et al. Mechanical properties of geopolymer composites reinforced with natural fibers[J]. Procedia Engineering, 2016, 151: 388-393. doi: 10.1016/j.proeng.2016.07.395
[56]	DE AZEVEDO A R G, CRUZ A S A, MARVILA M T, et al. Natural fibers as an alternative to synthetic fibers in reinforcement of geopolymer matrices: A comparative review[J]. Polymers, 2021, 13(15): 2493. doi: 10.3390/polym13152493
[57]	TONIOLO N, BOCCACCINI A R. Fly ash-based geopolymers containing added silicate waste: A review[J]. Ceramics International, 2017, 43(17): 14545-14551. doi: 10.1016/j.ceramint.2017.07.221
[58]	ÖZ A, BAYRAK B, KAPLAN G, et al. Effect of waste colemanite and PVA fibers on GBFS-Metakaolin based high early strength geopolymer composites (HESGC): Mechanical, microstructure and carbon footprint characteristics[J]. Construction and Building Materials, 2023, 377: 131064. doi: 10.1016/j.conbuildmat.2023.131064
[59]	EL-HASSAN H, ELKHOLY S. Performance evaluation and microstructure characterization of steel fiber-reinforced alkali-activated slag concrete incorporating fly ash[J]. Journal of Materials in Civil Engineering, 2019, 31(10): 4019223. doi: 10.1061/(ASCE)MT.1943-5533.0002872
[60]	CHOI J, LEE B Y, RANADE R, et al. Ultra-high-ductile behavior of a polyethylene fiber-reinforced alkali-activated slag-based composite[J]. Cement and Concrete Composites, 2016, 70: 153-158. doi: 10.1016/j.cemconcomp.2016.04.002
[61]	XU J, KANG A, WU Z, et al. Evaluation of workability, microstructure and mechanical properties of recycled powder geopolymer reinforced by waste hydrophilic basalt fiber[J]. Journal of Cleaner Production, 2023, 396: 136514. doi: 10.1016/j.jclepro.2023.136514
[62]	郑斌义. 单向连续SiC_f增强铝硅酸盐聚合物基复合材料的力学性能[D]. 哈尔滨: 哈尔滨工业大学, 2013. ZHENG Binyi. Machanical properties of unidirectional SiC fiber reinforced potassium-based geopolymer composites[D]. Harbin: Harbin Institute of Technology, 2013(in Chinese).
[63]	王亚超. 碱激发粉煤灰基地质聚合物强化增韧及耐久性能研究[D]. 西安: 西安建筑科技大学, 2014. WANG Yachao. Investigations on reinforcing, toughening and durability of alkali-activated fly ash-based geopolymer[D]. Xi'an: Xi'an University of Architecture and Technology, 2014(in Chinese).
[64]	YU T, CHEN J, GUO H, et al. Mechanical properties and microstructure of ground granulated blast furnace slag-based geopolymer reinforced with polyvinyl alcohol fibers[J]. Journal of Material Cycles and Waste Management, 2023, 25(3): 1719-1731. doi: 10.1007/s10163-023-01646-3
[65]	BASKAR P, ANNADURAI S, SEKAR K, et al. A review on fresh, hardened, and microstructural properties of fibre-reinforced geopolymer concrete[J]. Polymers, 2023, 15(6): 1484. doi: 10.3390/polym15061484
[66]	RANJBAR N, ZHANG M. Fiber-reinforced geopolymer composites: A review[J]. Cement and Concrete Composites, 2020, 107: 103498. doi: 10.1016/j.cemconcomp.2019.103498
[67]	KHAN M Z N, HAO Y, HAO H, et al. Mechanical properties of ambient cured high strength hybrid steel and synthetic fibers reinforced geopolymer composites[J]. Cement and Concrete Composites, 2018, 85: 133-152. doi: 10.1016/j.cemconcomp.2017.10.011
[68]	GU G, PEI Y, MA T, et al. Role of carbon fiber in the electrothermal behavior and geopolymerization process of carbon fiber-reinforced FA-GBFS geopolymer composite[J]. Construction and Building Materials, 2023, 369: 130597. doi: 10.1016/j.conbuildmat.2023.130597
[69]	WANG T, YANG L, RAO F, et al. Effect of chitosan on the mechanical properties and acid resistance of metakaolin-blast furnance slag-based geopolymers[J]. Environmental Science and Pollution Research, 2023, 30(16): 47025-47037. doi: 10.1007/s11356-023-25676-4
[70]	SINGLA R, SENNA M, MISHRA T, et al. High strength metakaolin/epoxy hybrid geopolymers: Synthesis, characterization and mechanical properties[J]. Applied Clay Science, 2022, 221: 106459. doi: 10.1016/j.clay.2022.106459
[71]	LU C, WANG Q, LIU Y, et al. Influence of new organic alkali activators on microstructure and strength of fly ash geopolymer[J]. Ceramics International, 2022, 48(9): 12442-12449. doi: 10.1016/j.ceramint.2022.01.109
[72]	CHEN X, ZHU G, ZHOU M, et al. Effect of organic polymers on the properties of slag-based geopolymers[J]. Construction and Building Materials, 2018, 167: 216-224. doi: 10.1016/j.conbuildmat.2018.02.031
[73]	QIN Y, CHEN X, LI B, et al. Study on the mechanical properties and microstructure of chitosan reinforced metakaolin-based geopolymer[J]. Construction and Building Materials, 2021, 271: 121522. doi: 10.1016/j.conbuildmat.2020.121522
[74]	KHATER H M, EL NAGGAR A. Combination between organic polymer and geopolymer for production of eco-friendly metakaolin composite[J]. Journal of the Australian Ceramic Society, 2020, 56(2): 599-608. doi: 10.1007/s41779-019-00371-1
[75]	CATAURO M, PAPALE F, LAMANNA G, et al. Geopolymer/peg hybrid materials synthesis and investigation of the polymer influence on microstructure and mechanical behavior[J]. Materials Research, 2015, 18(4): 698-705. doi: 10.1590/1516-1439.342814
[76]	CHEN X, ZHOU M, GE X, et al. Study on the microstructure of metakaolin-based geopolymer enhanced by polyacrylate[J]. Journal of the Ceramic Society of Japan, 2019, 127(3): 165-172. doi: 10.2109/jcersj2.18186
[77]	ROVIELLO G, RICCIOTTI L, MOLINO A J, et al. Hybrid geopolymers from fly ash and polysiloxanes[J]. Molecules, 2019, 24(19): 3510. doi: 10.3390/molecules24193510
[78]	ZHANG M, XU H, PHALÉ ZEZE A L, et al. Coating performance, durability and anti-corrosion mechanism of organic modified geopolymer composite for marine concrete protection[J]. Cement and Concrete Composites, 2022, 129: 104495. doi: 10.1016/j.cemconcomp.2022.104495
[79]	COLANGELO F, ROVIELLO G, RICCIOTTI L, et al. Preparation and characterization of new geopolymer-epoxy resin hybrid mortars[J]. Materials, 2013, 6(7): 2989-3006. doi: 10.3390/ma6072989
[80]	MIRKOVIĆ M, YILMAZ M S, KLJAJEVIĆ L, et al. Design of PEI and amine modified metakaolin-brushite hybrid polymeric composite materials for CO₂ capturing[J]. Polymers, 2023, 15(7): 1669. doi: 10.3390/polym15071669
[81]	IVANOVIĆ M, KNEŽEVIĆ S, RADOVIĆ I, et al. Preparation and characterization of geopolymers based on metakaolin with the addition of organic phase PVA[J]. Sustainability, 2023, 15(5): 4441. doi: 10.3390/su15054441