废玻璃粉-偏高岭土地质聚合物胶砂的流动度和力学性能

摘要/Abstract

摘要： 本文以废玻璃粉和偏高岭土为原料,通过碱激发制备地质聚合物胶砂,研究了不同水玻璃模数碱激发剂和液固比对废玻璃粉-偏高岭土地质聚合物胶砂流动度和力学性能的影响,并通过X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、热重-差示扫描热(TG-DSC)、压汞法(MIP)及扫描电子显微镜(SEM)分析了地质聚合物胶砂的晶体结构、热化学性质、孔隙结构及微观形貌等。结果表明,水玻璃模数和液固比对地质聚合物胶砂流动度和力学性能有较明显的影响。随着水玻璃模数的增大,地质聚合物胶砂的流动度和强度先增加后减少,水玻璃模数为1.25时激发剂对材料的激发效果最佳,提高了地质聚合物的反应程度,生成了更多水化产物,优化了基体的孔隙结构,28 d抗压强度达到43.0 MPa;液固比的增大改善了地质聚合物胶砂的流动度,但降低了抗压强度,对孔隙结构产生了负面作用;XRD、FTIR及TG-DSC结果显示地质聚合物中废玻璃参与了水化反应,提供了Ca²⁺,促进了水化硅酸钙(C-S-H)和水化硅铝酸钙(C-A-S-H)凝胶的生成。

关键词: 地质聚合物, 废玻璃粉, 偏高岭土, 碱激发, 流动度, 力学性能

Abstract: Waste glass powder and metakaolin were used to prepare geopolymer mortar. The effects of alkali activator with different sodium silicate modulus and liquid-solid ratios on the fluidity and mechanical properties of the waste glass powder-metakaolin geopolymer mortar were investigated, and the crystal structure, thermochemistry, pore structure, and micromorphology of the geopolymer mortar were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric-differential scanning thermal (TG-DSC), mercury in piezoelectricity (MIP), and scanning electron microscopy (SEM). The results show that the sodium silicate modulus and liquid-solid ratio have more obvious effects on the fluidity and mechanical properties of the geopolymer mortar. With the increase of sodium silicate modulus, the fluidity and strength of geopolymer mortar increase first and then decrease. When the sodium silicate modulus is 1.25, the alkali activator has the best excitation effect on the material, which increases the degree of reaction of the geopolymer, generates more hydration products, optimizes the pore structure of the matrix, and the compressive strength of 28 d reaches 43.0 MPa. The increase of liquid-solid ratio improves the fluidity of the geopolymer mortar, but decreases the compressive strength and has a negative effect on the pore structure. Moreover, the XRD, FTIR and TG-DSC results show that the waste glass in the geopolymer participates in the hydration reaction, provides Ca²⁺, and promotes the generation of C-S-H and C-A-S-H gels.

Key words: geopolymer, waste glass powder, metakaolin, alkali-activation, fluidity, mechanical property

中图分类号:

TU526

彭丽娟, 柯国军, 宋百姓, 蒋恬, 王文青. 废玻璃粉-偏高岭土地质聚合物胶砂的流动度和力学性能[J]. 硅酸盐通报, 2024, 43(6): 2168-2175.

PENG Lijuan, KE Guojun, SONG Baixing, JIANG Tian, WANG Wenqing. Fluidity and Mechanical Properties of Waste Glass Powder-Metakaolin Geopolymer Mortar[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(6): 2168-2175.

参考文献

[1] THO-IN T, SATA V, BOONSERM K, et al. Compressive strength and microstructure analysis of geopolymer paste using waste glass powder and fly ash[J]. Journal of Cleaner Production, 2018, 172: 2892-2898.
[2] MANIKANDAN P, VASUGI V. Potential utilization of waste glass powder as a precursor material in synthesizing ecofriendly ternary blended geopolymer matrix[J]. Journal of Cleaner Production, 2022, 355: 131860.
[3] LIANG G W, LI H X, ZHU H J, et al. Reuse of waste glass powder in alkali-activated metakaolin/fly ash pastes: physical properties, reaction kinetics and microstructure[J]. Resources, Conservation and Recycling, 2021, 173: 105721.
[4] ZHENG K R. Pozzolanic reaction of glass powder and its role in controlling alkali-silica reaction[J]. Cement and Concrete Composites, 2016, 67: 30-38.
[5] 柯国军, 邹品玉, 甘元初, 等. 废玻璃粉活性特征和活性机理研究[J]. 中国粉体技术, 2015, 21(5): 87-92.
KE G J, ZOU P Y, GAN Y C, et al. Strength activity characteristic and mechanism of waste glass powders[J]. China Powder Science and Technology, 2015, 21(5): 87-92 (in Chinese).
[6] BISHT K, KABEER K I S A, RAMANA P V. Gainful utilization of waste glass for production of sulphuric acid resistance concrete[J]. Construction and Building Materials, 2020, 235: 117486.
[7] 张西玲, 陈林, 向芸, 等. 玻璃微粉和粉煤灰制备地质聚合物的实验研究[J]. 硅酸盐通报, 2016, 35(6): 1918-1922.
ZHANG X L, CHEN L, XIANG Y, et al. Preparation of geopolymer from glass powders and fly-ash[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(6): 1918-1922 (in Chinese).
[8] LIN K L, SHIU H S, SHIE J L, et al. Effect of composition on characteristics of thin film transistor liquid crystal display (TFT-LCD) waste glass-metakaolin-based geopolymers[J]. Construction and Building Materials, 2012, 36: 501-507.
[9] CYR M, IDIR R, POINOT T. Properties of inorganic polymer (geopolymer) mortars made of glass cullet[J]. Journal of Materials Science, 2012, 47(6): 2782-2797.
[10] VINAI R, SOUTSOS M. Production of sodium silicate powder from waste glass cullet for alkali activation of alternative binders[J]. Cement and Concrete Research, 2019, 116: 45-56.
[11] PASCUAL A B, TOGNONVI T M, TAGNIT-HAMOU A. Optimization study of waste glass powder-based alkali activated materials incorporating metakaolin: activation and curing conditions[J]. Journal of Cleaner Production, 2021, 308: 127435.
[12] SI R Z, GUO S C, DAI Q L, et al. Atomic-structure, microstructure and mechanical properties of glass powder modified metakaolin-based geopolymer[J]. Construction and Building Materials, 2020, 254: 119303.
[13] BURCIAGA-DÍAZ O, DURÉN-SIFUENTES M, DÍAZ-GUILLÉN J A, et al. Effect of waste glass incorporation on the properties of geopolymers formulated with low purity metakaolin[J]. Cement and Concrete Composites, 2020, 107: 103492.
[14] 徐庆, 李秋, 陈伟, 等. 碱激发剂模数对地质聚合物透水混凝土的性能影响研究[J]. 硅酸盐通报, 2018, 37(11): 3575-3580+3586.
XU Q, LI Q, CHEN W, et al. Effect of modulus of alkali-activator on the properties of GGBS-based geopolymer pervious concrete[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(11): 3575-3580+3586 (in Chinese).
[15] 殷素红, 管海宇, 胡捷, 等. 碱激发粉煤灰-矿渣灌浆材料的流变性与流动性[J]. 华南理工大学学报(自然科学版), 2019, 47(8): 120-128+135.
YIN S H, GUAN H Y, HU J, et al. Rheological properties and fluidity of alkali-activated fly ash-slag grouting material[J]. Journal of South China University of Technology (Natural Science Edition), 2019, 47(8): 120-128+135 (in Chinese).
[16] 郑文忠, 邹梦娜, 王英. 碱激发胶凝材料研究进展[J]. 建筑结构学报, 2019, 40(1): 28-39.
ZHENG W Z, ZOU M N, WANG Y. Literature review of alkali-activated cementitious materials[J]. Journal of Building Structures, 2019, 40(1): 28-39 (in Chinese).
[17] 杜天玲, 刘英, 于咏妍, 等. 水玻璃对粉煤灰矿渣地聚合物强度的影响及激发机理[J]. 公路交通科技, 2021, 38(1): 41-49.
DU T L, LIU Y, YU Y Y, et al. Influence of sodium silicate on fly ash slag geopolymer strength and stimulating mechanism[J]. Journal of Highway and Transportation Research and Development, 2021, 38(1): 41-49 (in Chinese).
[18] PASCUAL A B. Waste glass powder-based alkali-activated mortar[J]. International Journal of Research in Engineering and Technology, 2014, 03(25): 15-19.
[19] LIU Q, LI X C, CUI M Y, et al. Preparation of eco-friendly one-part geopolymers from gold mine tailings by alkaline hydrothermal activation[J]. Journal of Cleaner Production, 2021, 298: 126806.
[20] MENCHACA-BALLINAS L E, GOROKHOVSKY A V, ESCALANTE-GARCIA J I. Waste glass as a precursor in sustainable hydraulic cements activated with CaO-NaOH-Na₂CO₃[J]. Construction and Building Materials, 2021, 302: 124099.
[21] PRUD′HOMME E, MICHAUD P, JOUSSEIN E, et al. Role of alkaline cations and water content on geomaterial foams: monitoring during formation[J]. Journal of Non-Crystalline Solids, 2011, 357(4): 1270-1278.
[22] 魏威, 高彦斌, 陈忠清, 等. 室温碱激发低钙粉煤灰地质聚合物配比试验研究[J]. 硅酸盐通报, 2020, 39(12): 3889-3896.
WEI W, GAO Y B, CHEN Z Q, et al. Experimental study on proportion of room temperature alkali-activated low-calcium fly ash geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(12): 3889-3896 (in Chinese).
[23] TAMBELLI C E, SCHNEIDER J F, HASPARYK N P, et al. Study of the structure of alkali-silica reaction gel by high-resolution NMR spectroscopy[J]. Journal of Non-Crystalline Solids, 2006, 352(32/33/34/35): 3429-3436.
[24] GHARZOUNI A, VIDAL L, ESSAIDI N, et al. Recycling of geopolymer waste: influence on geopolymer formation and mechanical properties[J]. Materials & Design, 2016, 94: 221-229.
[25] REES C A, PROVIS J L, LUKEY G C, et al. In situ ATR-FTIR study of the early stages of fly ash geopolymer gel formation[J]. Langmuir, 2007, 23(17): 9076-9082.
[26] 安赛, 王宝民, 陈文秀, 等. 电石渣激发矿渣-粉煤灰复合胶凝材料的作用机制[J]. 硅酸盐通报, 2023, 42(4): 1333-1343.
AN S, WANG B M, CHEN W X, et al. Interaction mechanism of carbide slag activating slag-fly ash composite cementitious materials[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(4): 1333-1343 (in Chinese).