梳状纳米二氧化硅分散液的制备及对水泥基材料性能的提升

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (4): 1183-1193.

所属专题：水泥混凝土

梳状纳米二氧化硅分散液的制备及对水泥基材料性能的提升

梁锐, 孔森, 张琰, 刘佳龙

中国电力科学研究院有限公司,北京 100192

收稿日期:2022-12-27 修订日期:2023-01-06 出版日期:2023-04-15 发布日期:2023-04-25
作者简介:梁锐(1986—),男,工程师。主要从事高性能水泥基材料及外加剂应用研究。E-mail:67879673@qq.com
基金资助:
国家电网公司科技项目(5200-20223098A-1-1-ZN)

Preparation of Colloidal of Nano-Silica with Comb-Like Structure Polymer and Its Effect on Performance Improvement of Cement-Based Materials

LIANG Rui, KONG Sen, ZHANG Yan, LIU Jialong

China Electric Power Research Institute, Beijing 100192, China

Received:2022-12-27 Revised:2023-01-06 Online:2023-04-15 Published:2023-04-25

摘要/Abstract

摘要： 采用丙烯酸、聚氧化乙烯醚及硅烷偶联剂合成梳状结构的大分子主链,并接枝纳米SiO₂粒子为侧链,制备出纳米SiO₂的分散液(CNS)。通过优化参数组合,提出了合成的最佳工艺和配比。采用SEM和动态光散射表征CNS中纳米SiO₂形貌和粒径分布。探讨了掺CNS对水泥基材料水化热、凝结时间、孔结构、水化产物、混凝土力学性能和抗渗性能的影响。试验结果表明,掺CNS可明显提高水化放热速率,促进水泥的早期水化并加速水化产物的形成和沉淀,加快水化温升,同时缩短凝结时间。掺CNS对水化产物的影响表现为:在养护7 d时,促进生成C-S-H凝胶,降低了水化产物中氢氧化钙(CH)的含量;养护28 d时,加速了水化产物的形成,增加水化产物中CH的含量。宏观性能表现为混凝土的7、28 d抗压强度和抗渗性能提高。

关键词: 水泥基材料, 纳米二氧化硅, 二氧化硅分散液, 梳状结构, 水化产物

Abstract: In this paper, a kind of colloidal of nano-silica (CNS) was prepared, which was a comb-like structure polymer. Its main chain synthesized by acrylic acid, polyoxyethylene ether and silane coupling agent, side chain grafted with nano-silica particles. By optimizing the parameters, a reasonable synthesis process and formula were determined. The morphology and particle size distribution of the nano-silica in CNS were characterized by scanning electron microscope (SEM) and dynamic light scattering (DLS). The effects of different amounts of CNS on cement hydration heat, setting time, pore structure, hydration products, mechanical properties and impermeability of concrete were evaluated. The test results show that the addition of CNS can increase the hydration heat release rate, promote the early hydration of cement, accelerate the formation and precipitation of hydration products, increase the hydration temperature and shorten the setting time. The effect on hydration products is that CNS promotes the formation of C-S-H gel at 7 d and reduces the content of Ca(OH)₂(CH) in hydration products. At 28 d, CNS accelerates the formation of hydration products and increases the content of CH in hydration products. The macroscopic performance shows that the 7 and 28 d compressive strength and impermeability of concrete are improved.

Key words: cement-based material, nano-silica, colloidal of silica, comb-like structure polymer, hydration product

中图分类号:

TU528

梁锐, 孔森, 张琰, 刘佳龙. 梳状纳米二氧化硅分散液的制备及对水泥基材料性能的提升[J]. 硅酸盐通报, 2023, 42(4): 1183-1193.

LIANG Rui, KONG Sen, ZHANG Yan, LIU Jialong. Preparation of Colloidal of Nano-Silica with Comb-Like Structure Polymer and Its Effect on Performance Improvement of Cement-Based Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(4): 1183-1193.

参考文献

[1] 王立国, 张树鹏, 李东旭. 纳米材料改性水泥基材料的研究应用进展[J]. 硅酸盐通报, 2016, 35(7): 2128-2134.
WANG L G, ZHANG S P, LI D X. Research progress in effect of nanomaterials on the performance of cement based materials[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(7): 2128-2134 (in Chinese).
[2] SHIH J Y, CHANG T P, HSIAO T C. Effect of nanosilica on characterization of Portland cement composite[J]. Materials Science and Engineering: A, 2006, 424(1/2): 266-274.
[3] LI H, XIAO H G, YUAN J, et al. Microstructure of cement mortar with nano-particles[J]. Composites Part B: Engineering, 2004, 35(2): 185-189.
[4] DOLADO J S, CAMPILLO I, ERKIZIA E, et al. Effect of nanosilica additions on belite cement pastes held in sulfate solutions[J]. Journal of the American Ceramic Society, 2007, 90(12): 3973-3976.
[5] JO B W, KIM C H, LIM J H. Characteristics of cement mortar with nano-SiO₂ particles[J]. ACI Materials Journal, 2007, 104(4): 404-407.
[6] JO B W, KIM C H, TAE G H, et al. Characteristics of cement mortar with nano-SiO₂ particles[J]. Construction and Building Materials, 2007, 21(6): 1351-1355.
[7] STEFANIDOU M, PAPAYIANNI I. Influence of nano-SiO₂ on the Portland cement pastes[J]. Composites Part B: Engineering, 2012, 43(6): 2706-2710.
[8] QUERCIA G, SPIESZ P, HÜSKEN G, et al. SCC modification by use of amorphous nano-silica[J]. Cement and Concrete Composites, 2014, 45: 69-81.
[9] 王冲, 蒲心诚, 刘芳, 等. 纳米颗粒材料在水泥基材料中应用的可行性研究[J]. 新型建筑材料, 2003, 30(2): 22-23.
WANG C, PU X C, LIU F, et al. Feasibility study on the application of nanoparticle materials in cement-based materials[J]. New Building Materials, 2003, 30(2): 22-23 (in Chinese).
[10] 叶青, 张泽南, 陈荣升, 等. 纳米SiO₂与水泥硬化浆体中Ca(OH)₂的反应[J]. 硅酸盐学报, 2003, 31(5): 517-522.
YE Q, ZHANG Z N, CHEN R S, et al. Interaction of nano-SiO₂ with portlandite at interface between hardened cement paste and aggregate[J]. Journal of the Chinese Ceramic Society, 2003, 31(5): 517-522 (in Chinese).
[11] 王建荣, 石捷, 侯鹏坤. 纳米二氧化硅在水泥基材料中的分散研究进展[J]. 济南大学学报(自然科学版), 2020, 34(5): 521-526.
WANG J R, SHI J, HOU P K. Research progress on dispersion of nano-silica in cement-based materials[J]. Journal of University of Jinan (Science and Technology), 2020, 34(5): 521-526 (in Chinese).
[12] 杜祥飞. 纳米SiO₂团聚特性及其对水泥基材料性能的影响与机理[D]. 杭州: 浙江工业大学, 2012.
DU X F. Influece and mechanism of nano-SiO₂ agglomeration on the properties of the cement-based materials[D]. Hangzhou: Zhejiang University of Technology, 2012 (in Chinese).
[13] 孔德玉, 杜祥飞, 杨杨, 等. 纳米二氧化硅团聚特性对水泥水化硬化性能的影响[J]. 硅酸盐学报, 2012, 40(11): 1599-1606.
KONG D Y, DU X F, YANG Y, et al. Effect of nano-silica agglomeration on hydration and hardening of cement[J]. Journal of the Chinese Ceramic Society, 2012, 40(11): 1599-1606 (in Chinese).
[14] 王培铭, 丰曙霞, 刘贤萍. 水泥水化程度研究方法及其进展[J]. 建筑材料学报, 2005, 8(6): 646-652.
WANG P M, FENG S X, LIU X P. Research approaches of cement hydration degree and their development[J]. Journal of Building Materials, 2005, 8(6): 646-652 (in Chinese).
[15] 何小芳, 张亚爽, 李小庆, 等. 水泥水化产物的热分析研究进展[J]. 硅酸盐通报, 2012, 31(5): 1170-1174.
HE X F, ZHANG Y S, LI X Q, et al. Research progress of thermal analysis in cement hydration[J]. Bulletin of the Chinese Ceramic Society, 2012, 31(5): 1170-1174 (in Chinese).

梳状纳米二氧化硅分散液的制备及对水泥基材料性能的提升

Preparation of Colloidal of Nano-Silica with Comb-Like Structure Polymer and Its Effect on Performance Improvement of Cement-Based Materials

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