NaOH改善粉煤灰混凝土微结构及抗风蚀-冻融耐久性能

doi:10.6040/j.issn.1672-3961.0.2023.181

山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (4): 131-140.doi: 10.6040/j.issn.1672-3961.0.2023.181

• 土木工程 • 上一篇

NaOH改善粉煤灰混凝土微结构及抗风蚀-冻融耐久性能

张启懿¹,邹春霞^1*,郭晓松¹,宋育鑫¹,郑建庭¹,赵溢^1,2

1.内蒙古农业大学水利与土木建筑工程学院, 内蒙古呼和浩特 010018;2.中国建筑第八工程局有限公司西北分公司, 陕西西安 710065

发布日期:2024-08-20
作者简介:张启懿(1997— ),男,山西运城人,硕士研究生,主要研究方向为混凝土材料耐久性能. E-mail:z18435228259@126.com. *通信作者简介:邹春霞(1975— ),女,内蒙古巴彦淖尔人,教授,硕士生导师,博士,主要研究方向为工程材料力学行为及耐久性能. E-mail:anna-zcx@163.com
基金资助:
内蒙古自治区自然科学基金资助项目(2022MS05043);内蒙古自治区高等学校科学技术研究自然科学重点资助项目(NJZZ22518,NJZZ22517);内蒙古自治区水利科学研究专项资助项目(NSK2016-S11);内蒙古自治区研究生教育教学改革资助项目(JGCG2023066)

Improvement of microstructure and coupling wind erosion with freeze-thaw durability of fly ash concrete by sodium hydroxide

ZHANG Qiyi¹, ZOU Chunxia^1*, GUO Xiaosong¹, SONG Yuxin¹, ZHENG Jianting¹, ZHAO Yi^1,2

1. College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia, China;
2. The Northwest Branch Company, China Construction Eighth Engineering Division Co., Ltd., Xi'an 710065, Shaanxi, China

Published:2024-08-20

摘要/Abstract

摘要： 为改善水工混凝土风蚀-冻融耐久性能,提高固废粉煤灰的利用率,选择NaOH碱性激发剂制备加碱粉煤灰混凝土。通过红外光谱试验、核磁共振试验、室内冻融和风蚀-冻融试验研究常温养护下加碱粉煤灰混凝土反应产物、孔隙特征及抗冻、抗风蚀-冻融耐久性劣化规律。结果表明:常温掺加质量分数为5%的NaOH有利于激发粉煤灰活性,提高其对水泥的替代率;加碱后红外光谱中粉煤灰玻璃体的特征峰消失,出现了N-A-S-H凝胶的典型特征峰且凝胶聚合度更高;核磁共振中相应的T₂谱起始弛豫时间和谱面积均减小,孔结构更优;粉煤灰替代率为40%,NaOH质量分数为5%时混凝土的孔隙结构优于粉煤灰替代率为20%的普通混凝土。以相对动弹性模量为指标,建立加碱粉煤灰混凝土耐久性指标的优化残差-马尔可夫(Markov)模型并对其服役寿命进行预测,相对误差在5%左右,证实了常温条件外加碱性激发剂有助于提高粉煤灰在胶凝材料中的使用率,改善混凝土的抗风蚀-冻融耐久性能,为风蚀严寒区绿色水工混凝土的开发、推广提供理论支撑。

关键词: 加碱粉煤灰混凝土, 红外光谱, 核磁共振, 风蚀-冻融, 灰色残差-Markov模型, 常温养护

中图分类号:

TU528

张启懿,邹春霞,郭晓松,宋育鑫,郑建庭,赵溢. NaOH改善粉煤灰混凝土微结构及抗风蚀-冻融耐久性能[J]. 山东大学学报 (工学版), 2024, 54(4): 131-140.

ZHANG Qiyi, ZOU Chunxia, GUO Xiaosong, SONG Yuxin, ZHENG Jianting, ZHAO Yi. Improvement of microstructure and coupling wind erosion with freeze-thaw durability of fly ash concrete by sodium hydroxide[J]. Journal of Shandong University(Engineering Science), 2024, 54(4): 131-140.

参考文献

[1] 张雅慧. 风沙荷载作用下混凝土应力分析及损伤评估[D].北京: 北京交通大学,2022. ZHANG Yahui. Stress analysis and damage assessment of concrete under wind-sand load[D]. Beijing: Beijing Jiaotong University, 2022.
[2] 赖海珍, 陆程铭, 荆慧斌, 等. 高寒地区复掺矿物掺合料水工混凝土抗冻耐久性劣化机理研究[J]. 水资源与水工程学报, 2019, 30(2):191-197. LAI Haizhen, LU Chengming, JING Huibin, et al.Study on frost resistance durability deterioration mechanism of hydraulic concrete with mineral mixed admixture in alpine regions[J]. Journal of Water Resources & Water Engineering, 2019, 30(2):191-197.
[3] 刘伟, 邹春霞, 薛慧君, 等. 渠道衬砌混凝土冻融风蚀耐久性能及寿命预测[J]. 排灌机械工程学报, 2023, 41(6):568-575. LIU Wei, ZOU Chunxia, XUE Huijun, et al. Durability and life prediction of freeze-thaw-wind erosion of channel lining concrete[J]. Journal of Drainage and Irrigation Machinery Engineering, 2023,41(6):568-575.
[4] 张大旺, 王栋民. 地质聚合物混凝土研究现状[J]. 材料导报, 2018, 32(9):1519-1527. ZHANG Dawang, WANG Dongmin. Research status of geopolymer concrete[J]. Materials Reports, 2018, 32(9):1519-1527.
[5] 郭晓松, 邹春霞, 薛慧君, 等. 碱激发风积沙混凝土力学性能与孔隙结构特征[J]. 工业建筑, 2022, 52(11):162-168. GUO Xiaosong, ZOU Chunxia, XUE Huijun, et al. Mechanical properties and pore characteristic of alkali-activated aeolian sand concrete[J]. Industrial Construction, 2022, 52(11):162-168.
[6] SOMNA K, BUMRONGJAROEN W. Effect of external and internal calcium in fly ash on geopolymer formation[M]. Hoboken, USA: John Wiley & Sons, Inc. 2011:3-16.
[7] GARCÍA-LODEIRO I, FERNÁNDEZ-JIMÉNEZ A, PALOMO A. Variation inhybrid cements over time. Alkaline activation of fly ash-port land cement blends[J].Cement and Concrete Research, 2013, 52:112-122.
[8] 中华人民共和国住房和城乡建设部. 普通混凝土配合比设计规程: JGJ55—2011[S]. 北京: 中国建筑工业出版社, 2011.
[9] 孙浩然, 邹春霞, 薛慧君, 等. 模袋混凝土干湿-冻融侵蚀孔结构的分形特征[J]. 建筑材料学报, 2022, 25(2):124-130. SUN Haoran, ZOU Chunxia, XUE Huijun, et al. Fractal characteristics of dry-wet and freeze-thaw erosionpore structure of mold bag concrete[J]. Journal of Building Materials, 2022, 25(2):124-130.
[10] 中华人民共和国水利部. 水工混凝土试验规程: SL/T 352—2020[S]. 北京: 中国水利水电出版社, 2020.
[11] RAJINI B, RAO A V N, SASHIDHAR C. Micro-level studies of fly ash and GGBS-based geopolymer concrete usingfourier transform infra-red[J]. Materials Today: Proceedings, 2021, 46:586-589.
[12] GARCÍA-LODEIRO I, PALOMO A, FERNÁNDEZ-JIMÉNEZ A, et al. Compatibility studies between N-A-S-H and C-A-S-H gels. study in the ternary diagram Na₂O-CaO-Al₂O₃-SiO₂-H₂O[J]. Cement and Concrete Research, 2011, 41(9):923-931.
[13] CRIADO M, FERNÁNDEZ-JIMÉNEZ A, PALOMO A. Alkali activation of fly ash:effect of the SiO₂/Na₂O ratio: Part I: FTIR study[J]. Microporous & Mesoporous Materials, 2007, 106(1/2/3):180-191.
[14] LECOMTE I, HENRIST C, LIÉGEOIS M, et al. Micro-structural comparison between geopolymers, alkali-activated slag cement and Portland cement[J]. Journal of the European Ceramic Society, 2006, 26(16):3789-3797.
[15] GARCÍA LODEIRO I, MACPHEE D E, PALOMO A, et al. Effect of alkalis on fresh C-S-H gels. FTIR analysis[J]. Cementand Concrete Research, 2009, 39(3):147-153.
[16] DAKHANE A, MADAVARAPU S B, MARZKE R, et al. Time, temperature, and cationic dependence of alkali activation of slag:insights from fourier transform infrared spectroscopy and spectral deconvolution[J]. Applied Spectroscopy, 2017, 71(8): 1795-1807.
[17] GARCÍA-LODEIRO I, FERNÁNDEZ-JIMÉNEZ A, BLANCO M T, et al. FTIR study of the sol-gel synthesis of cementitious gels: C-S-H and N-A-S-H[J]. Journal of Sol-Gel Science and Technology, 2008, 45(1):63-72.
[18] 余旭东, 康志宏, 周磊, 等. 核磁共振技术在页岩孔隙表征中的应用[J]. 煤炭技术, 2018, 37(5): 129-131. YU Xudong, KANG Zhihong, ZHOU Lei, et al. Application of nuclear magnetic resonance in shale pore characterization[J]. Coal Technology, 2018, 37(5): 129-131.
[19] 康春涛, 贡力, 王忠慧, 等. 利用灰色残差GM(1,1)-Markov模型预测水工混凝土的劣化[J]. 水利水运工程学报, 2021, 43(1):95-103. KANG Chuntao, GONG Li, WANG Zhonghui, et al. Prediction of hydraulic concrete degradation based on gray residual GM(1,1)-Markov model[J]. Hydro-science and Engineering, 2021, 43(1):95-103.
[20] 于剑桥, 乔宏霞, 朱飞飞, 等. 基于GM(1,1)-Markov模型盐雾侵蚀对纤维混凝土耐久性能的影响[J].建筑材料学报, 2022, 25(9):910-916. YU Jianqiao, QIAO Hongxia, ZHU Feifei, et al. Effect of salt spray corrosion on durability performance of fiber concrete based on GM(1,1)-Markov model[J]. Journal of Building Materials, 2022, 25(9):910-916.
[21] 赵宇哲, 武春友. 灰色振荡序列GM(1,1)模型及在城市用水中的应用[J]. 运筹与管理, 2010, 19(5):155-159. ZHAO Yuzhe, WU Chunyou. GM(1,1)model of grey oscillation sequences and its application to urban water consumption forecasting[J]. Operations Research and Management Science, 2010, 19(5):155-159.
[22] 武海荣, 金伟良, 延永东, 等. 混凝土冻融环境区划与抗冻性寿命预测[J]. 浙江大学学报(工学版), 2012, 46(4):650-657. WU Hairong, JIN Weiliang, YAN Yongdong, et al. Environmental zonation and life prediction of concrete in frost environments[J]. Journal of Zhejiang University(Engineering Science), 2012, 46(4):650-657.

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NaOH改善粉煤灰混凝土微结构及抗风蚀-冻融耐久性能

Improvement of microstructure and coupling wind erosion with freeze-thaw durability of fly ash concrete by sodium hydroxide

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