Influence of Carbonate Environment on Performance and Microscopic Characteristics of Tunnel Concrete

Abstract

Abstract: To investigate the erosion and deterioration of railway tunnel lining concrete in karstic areas, this study focuses on ordinary Portland cement concrete and calcium sulfoaluminate cement concrete, as well as shotcrete. An environment of accelerated corrosion through carbonate exposure was simulated. The impact of carbonate environment on the macroscopic properties and microscopic characteristics of different types of tunnel concrete was studied using macroscopic performance testing and microscopic testing methods such as X-ray diffraction analysis, Fourier-transform infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. The mass, relative dynamic modulus of elasticity and compressive strength of concrete show an initial increase followed by a subsequent decrease with the increase of immersion duration. The decline starts after 180 d of immersion, in which the compressive strength of calcium sulfoaluminate cement concrete is lower than the initial value after immersing for 360 d. Microstructural analysis of the concrete reveals that after 360 d of erosion, the crystals and gels in the original hydration products of the samples sharply decrease, giving rise to a significant amount of calcium carbonate. In the samples of calcium sulfoaluminate cement concrete, [Si(OH)₆]^2- octahedral groups are detected, confirming the formation of thaumasite. The calcium sufoaluminate cement-based concrete with ettringite as the main hydration product is more significantly affected by carbonate erosion.

Key words: tunnel concrete, carbonate solution, thaumasite, compressive strength, hydration product, microscopic structure

CLC Number:

TU528

LI Kang, GAO Meng, ZOU Min, LIU Juanhong, XIE Yongjiang. Influence of Carbonate Environment on Performance and Microscopic Characteristics of Tunnel Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(7): 2415-2426.

References

[1] 仲新华, 李享涛, 渠亚男, 等. 铁路混凝土抗硫酸盐侵蚀试验研究及技术对策[J]. 铁道建筑, 2019, 59(12): 151-154.
ZHONG X H, LI X T, QU Y N, et al. Experimental study and technical countermeasures of resistance to sulfate corrosion for railway concrete[J]. Railway Engineering, 2019, 59(12): 151-154 (in Chinese).
[2] 陶建强. 硫酸盐腐蚀环境铁路隧道衬砌混凝土耐久性提升技术研究[D]. 重庆: 重庆大学, 2019.
TAO J Q. Study on durability improvement technology of railway tunnel lining concrete in sulfate corrosion environment[D]. Chongqing: Chongqing University, 2019 (in Chinese).
[3] 姜骞, 石亮, 刘建忠, 等. 西南某隧道衬砌混凝土中的硫酸盐腐蚀破坏分析及对策[J]. 隧道建设, 2016, 36(8): 918-923.
JIANG Q, SHI L, LIU J Z, et al. A case analysis of tunnel lining concrete under sulfate attack and it’s countermeasures[J]. Tunnel Construction, 2016, 36(8): 918-923 (in Chinese).
[4] 王培荔, 万飞, 郝晓燕. 杜公岭隧道衬砌结构加固方案优化研究[J]. 公路交通科技, 2021, 38(6): 32-38.
WANG P L, WAN F, HAO X Y. Study on optimization of reinforcement scheme of dugongling tunnel lining structure[J]. Journal of Highway and Transportation Research and Development, 2021, 38(6): 32-38 (in Chinese).
[5] HU M Y, LONG F M, TANG M S. The thaumasite form of sulfate attack in concrete of Yongan Dam[J]. Cement and Concrete Research, 2006, 36(10): 2006-2008.
[6] 刘娟红, 邹敏, 李康, 等. 碳酸盐环境下水泥基材料性能劣化与腐蚀破坏的研究进展[J]. 材料导报, 2023, 37(19): 92-100.
LIU J H, ZOU M, LI K, et al. Research progress on performance degradation and corrosion failure of cement-based materials in carbonate environment[J]. Materials Reports, 2023, 37(19): 92-100 (in Chinese).
[7] 禹虹机. 不同类盐蚀对混凝土的宏-细观损伤机理[D]. 长春: 吉林大学, 2017, 10-12.
YU H J. The macro-and meso-damage mechanism of concrete under different kinds of salt attack[D]. Changchun: Jilin University, 2017, 10-12 (in Chinese).
[8] 董芸, 杨华全, 王磊. 碳酸侵蚀条件下水泥基材料性能劣化试验研究[J]. 建筑材料学报, 2014, 17(5): 868-874.
DONG Y, YANG H Q, WANG L. Experimental study on property deterioration of cement-based materials under carbonic acid erosion[J]. Journal of Building Materials, 2014, 17(5): 868-874 (in Chinese).
[9] LIN Y H, ZHU D J, ZENG D Z, et al. Experimental studies on corrosion of cement in CO₂ injection wells under supercritical conditions[J]. Corrosion Science, 2013, 74: 13-21.
[10] 周辉, 郑俊, 胡大伟, 等. 碳酸性水环境下隧洞衬砌结构劣化机制研究[J]. 岩土力学, 2019, 40(7): 2469-2477+2486.
ZHOU H, ZHENG J, HU D W, et al. Deterioration mechanism of tunnel lining structure in the carbonated water environment[J]. Rock and Soil Mechanics, 2019, 40(7): 2469-2477+2486 (in Chinese).
[11] 李茂森, 王露, 王军, 等. 大掺量矿物掺合料混凝土碳化行为研究进展[J]. 硅酸盐通报, 2023, 42(11): 3787-3798.
LI M S, WANG L, WANG J, et al. Research progress on carbonation behavior of concrete with large volume of mineral admixture[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 3787-3798 (in Chinese).
[12] YIN S H, YANG Y F, ZHANG T S, et al. Effect of carbonic acid water on the degradation of Portland cement paste: corrosion process and kinetics[J]. Construction and Building Materials, 2015, 91: 39-46.
[13] 肖佳, 吴婷, 孟庆业, 等. 碳硫硅钙石在不同阳离子作用下的形成研究[J]. 功能材料, 2014, 45(19): 19045-19049+19053.
XIAO J, WU T, MENG Q Y, et al. Effects of different cations on the formation of thaumasite[J]. Journal of Functional Materials, 2014, 45(19): 19045-19049+19053 (in Chinese).
[14] SHI C J, WANG D H, BEHNOOD A. Review of thaumasite sulfate attack on cement mortar and concrete[J]. Journal of Materials in Civil Engineering, 2012, 24(12): 1450-1460.
[15] 王冲, 于超, 罗遥凌, 等. 不同侵蚀条件下水泥基材料碳硫硅钙石生成速度比较[J]. 同济大学学报(自然科学版), 2015, 43(5): 748-753.
WANG C, YU C, LUO Y L, et al. Comparison of thaumasite sulfate attack formation speed under different erosion conditions[J]. Journal of Tongji University (Natural Science), 2015, 43(5): 748-753 (in Chinese).
[16] 吴萌, 姬永生, 张领雷, 等. 石膏对碳硫硅钙石型硫酸盐破坏的影响[J]. 硅酸盐学报, 2016, 44(11): 1571-1578.
WU M, JI Y S, ZHANG L L, et al. Effect of gypsum on thaumasite form of sulfate attack[J]. Journal of the Chinese Ceramic Society, 2016, 44(11): 1571-1578 (in Chinese).
[17] 李长成. 水泥基材料碳硫硅钙石型硫酸盐侵蚀破坏及预防措施研究[D]. 北京: 中国建筑材料科学研究总院, 2011.
LI C C. Research on deterioration and preventive measures of thaumasite form of sulfate attack (TSA) in cement-based materials[D]. Beijing: China Building Materials Academy, 2011 (in Chinese).
[18] SKAROPOULOU A, KAKALI G, TSIVILIS S. Thaumasite form of sulfate attack in limestone cement concrete: the effect of cement composition, sand type and exposure temperature[J]. Construction and Building Materials, 2012, 36: 527-533.
[19] NIELSEN P, NICOLAI S, DARIMONT A, et al. Influence of cement and aggregate type on thaumasite formation in concrete[J]. Cement and Concrete Composites, 2014, 53: 115-126.
[20] COLLETT G, CRAMMOND N J, SWAMY R N, et al. The role of carbon dioxide in the formation of thaumasite[J]. Cement and Concrete Research, 2004, 34(9): 1599-1612.
[21] 中华人民共和国住房和城乡建设部, 国家市场监督管理总局. 混凝土物理力学性能试验方法标准: GB/T 50081—2019[S]. 北京: 中国建筑工业出版社, 2019.
Ministry of Housing and Urban-Rural Development, State Administration for Market Regulation, PRC. Test method standard for physical and mechanical properties of concrete: GB/T 50081—2019[S]. Beijing: China Architecture and Construction Press, 2019 (in Chinese).
[22] 余红发. 盐湖地区高性能混凝土的耐久性、机理与使用寿命预测方法[D]. 南京: 东南大学, 2004.
YU H F. Durability, mechanism and service life prediction method of high performance concrete in salt lake area[D].Nanjing: Southeast University, 2004 (in Chinese).
[23] MOHAMMED HANEEFA K, SANTHANAM M, PARIDA F C. Deterioration of limestone aggregate mortars by liquid sodium in fast breeder reactor environment[J]. Nuclear Engineering and Design, 2014, 275: 287-299.
[24] 吴萌, 张云升, 刘志勇, 等. 水泥基材料碳硫硅钙石型硫酸盐侵蚀的研究进展[J]. 硅酸盐学报, 2022, 50(8): 2270-2283.
WU M, ZHANG Y S, LIU Z Y, et al. Research progress on thaumasite form of sulfate attack in cement-based materials[J]. Journal of the Chinese Ceramic Society, 2022, 50(8): 2270-2283 (in Chinese).
[25] BONAVETTI V L, RAHHAL V F, IRASSAR E F. Studies on the carboaluminate formation in limestone filler-blended cements[J]. Cement and Concrete Research, 2001, 31(6): 853-859.
[26] 李相国, 田博, 何超, 等. SO^2-₄/C₃A对单矿C₃S水泥浆体中碳硫硅钙石形成的影响[J]. 硅酸盐通报, 2022, 41(8): 2637-2643.
LI X G, TIAN B, HE C, et al. Effect of SO^2-₄/C₃A on the formation of carburite in C₃S cement slurry[J]. Chinese Journal of Ceramics, 2022, 41(8): 2637-2643 (in Chinese).
[27] SCHOLTZOVÁ E, KUCKOVÁ L, KOŽÍŠEK J, et al. Experimental and computational study of thaumasite structure[J]. Cement and Concrete Research, 2014, 59: 66-72.
[28] WU M, ZHANG Y S, JI Y S, et al. A comparable study on the deterioration of limestone powder blended cement under sodium sulfate and magnesium sulfate attack at a low temperature[J]. Construction and Building Materials, 2020, 243: 118279.
[29] ZHANG T S, GAO P, LUO R F, et al. Volumetric deformation of gap-graded blended cement pastes with large amount of supplementary cementitious materials[J]. Construction and Building Materials, 2014, 54: 339-347.
[30] ZHANG S F, NIU D T. Hydration and mechanical properties of cement-steel slag system incorporating different activators[J]. Construction and Building Materials, 2023, 363: 129981.
[31] SACA N, GEORGESCU M. Behavior of ternary blended cements containing limestone filler and fly ash in magnesium sulfate solution at low temperature[J]. Construction and Building Materials, 2014, 71: 246-253.
[32] 周阳. 水泥基材料碳硫硅钙石的形成演变与调控机制研究[D]. 武汉: 武汉理工大学, 2018.
ZHOU Y. A research on the formation, evolution and regulation mechanism of thaumsite in cement-based materials[D].Wuhan: Wuhan University of Technology, 2018 (in Chinese).