Differences in durability of fiber concrete under constant temperature and variable temperature curing conditions

被引：0
作者：
Li, Jiacheng [1 ,2 ]
Huang, Mingli [1 ,2 ]
Wang, Qian [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Key Lab Urban Underground Engn, Minist Educ, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Sch Civil Engn, 3 Shangyuan Village, Beijing 100044, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2025年 / 473卷
关键词：
Concrete; Durability; Variable temperature curing; Salt solution; Micro testing; Pores; CHLORIDE TRANSPORT; RESISTANCE; CORROSION; MOISTURE; ASH;
D O I：
10.1016/j.conbuildmat.2025.141045
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The Qinghai-Tibetan Plateau region has a wide geothermal distribution and many thermally conductive fracture zones, leading to high geothermal and water temperatures and other hazards in tunnel construction. In this case, the care environment of the tunnel lining during construction is significantly different from the regular care environment. This study is focused on the durability of polypropylene fiber concrete used in an underconstruction high water temperature tunnel on the Tibetan Plateau, and the durability of concrete specimens under the two curing conditions that may be exposed to during the lining curing is investigated. Changes in durability indices such as concrete strength, mass, chloride diffusivity and pore structure morphology were investigated through indoor macroscopic and microscopic tests. The results showed that the pore connectivity of the variable-temperature-curing specimens was about 15 % lower than that of the constant-temperature-curing specimens. After one year of erosion in NaCl solution, the dynamic elastic modulus and compressive strength of the constant-temperature-curing specimens decreased by about 0.1 % and 4.5 %, respectively, while the variabletemperature-curing specimens increased by about 2.3 % and 1.8 %, respectively. In addition, the chloride binding capacity of concrete in 3 % NaCl solution was higher than that in the mixture of 3 % NaCl and 5 % Na2SO4, which was about 28.4 % higher for constant-temperature-curing specimens and about 24.9 % higher for variable-temperature-curing specimens. Overall, the concrete specimens under variable-temperature curing had smaller pores, lower porosity, and denser microstructure, and had stronger erosion resistance. The results of the study can provide experimental evidence for improving the durability of lining concrete in high water temperature environments.
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共 32 条
[1]   Performance investigation of high-proportion Saudi-fly-ash-based concrete [J].
Amran, Y. H. Mugahed ;
Soto, Mariantonieta Gutierrez ;
Alyousef, Rayed ;
El-Zeadani, Mohamed ;
Alabduljabbar, Hisham ;
Aune, Vegard .
RESULTS IN ENGINEERING, 2020, 6
[2]   Predicting the Compressive Strength and the Effective Porosity of Pervious Concrete Using Machine Learning Methods [J].
Ba-Anh Le ;
Viet-Hung Vu ;
Seo, Soo-Yeon ;
Bao-Viet Tran ;
Tuan Nguyen-Sy ;
Minh-Cuong Le ;
Thai-Son Vu .
KSCE JOURNAL OF CIVIL ENGINEERING, 2022, 26 (11) :4664-4679
[3]   Effect of Reinforcement Corrosion on Bond Behaviour [J].
Bilcik, Juraj ;
Holly, Ivan .
CONCRETE AND CONCRETE STRUCTURES 2013 - 6TH INTERNATIONAL CONFERENCE, SLOVAKIA, 2013, 65 :248-253
[4]  
Cevik Abdulkadir, 2022, Handb. Adv. Alkali-Act. Concr. Woodhead Publ., P451, DOI [10.1016/B978-0-323-85469-6.00005-2, DOI 10.1016/B978-0-323-85469-6.00005-2]
[5]   Measurement of the Inclusive Jet Cross Section in pp Collisions at √s=7 TeV [J].
Chatrchyan, S. ;
Khachatryan, V. ;
Sirunyan, A. M. ;
Tumasyan, A. ;
Adam, W. ;
Bergauer, T. ;
Dragicevic, M. ;
Eroe, J. ;
Fabjan, C. ;
Friedl, M. ;
Fruehwirth, R. ;
Ghete, V. M. ;
Hammer, J. ;
Haensel, S. ;
Hoch, M. ;
Hoermann, N. ;
Hrubec, J. ;
Jeitler, M. ;
Kiesenhofer, W. ;
Krammer, M. ;
Liko, D. ;
Mikulec, I. ;
Pernicka, M. ;
Rohringer, H. ;
Schoefbeck, R. ;
Strauss, J. ;
Taurok, A. ;
Teischinger, F. ;
Wagner, P. ;
Waltenberger, W. ;
Walzel, G. ;
Widl, E. ;
Wulz, C. -E. ;
Mossolov, V. ;
Shumeiko, N. ;
Gonzalez, J. Suarez ;
Bansal, S. ;
Benucci, L. ;
De Wolf, E. A. ;
Janssen, X. ;
Maes, J. ;
Maes, T. ;
Mucibello, L. ;
Ochesanu, S. ;
Roland, B. ;
Rougny, R. ;
Selvaggi, M. ;
Van Haevermaet, H. ;
Van Mechelen, P. ;
Van Remortel, N. .
PHYSICAL REVIEW LETTERS, 2011, 107 (13)
[6]   Alkali-Active Sand Slate Powder for Use as Mineral Admixture in Mass Hydraulic Concrete: Technical and Economic Analysis [J].
Chen, Xia ;
Zhou, Xian ;
Peng, Ziling ;
Li, Jiazheng .
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2021, 2021
[7]   Chloride penetration into concrete in marine environment - Part I: Main parameters affecting chloride penetration [J].
Costa, A ;
Appleton, J .
MATERIALS AND STRUCTURES, 1999, 32 (218) :252-259
[8]   Investigation on the dynamic mechanical properties and mesoscopic damage mechanism of alkali-activated seawater and sea sand concrete in marine corrosive environments [J].
Dou, Junchun ;
Zhang, Jinhua ;
Yu, Hongfa ;
Ma, Haiyan ;
Pan, Junyu ;
Zhang, Zhiqiang .
CONSTRUCTION AND BUILDING MATERIALS, 2024, 456
[9]   Concrete-to-concrete bond Strength: A review [J].
EL Afandi, M. ;
Yehia, S. ;
Landolsi, T. ;
Qaddoumi, N. ;
Elchalakani, M. .
CONSTRUCTION AND BUILDING MATERIALS, 2023, 363
[10]   Study on Expansion Characteristics and Expansion Potential of Gypsum Rock [J].
Fu, Junfu ;
Li, Huayun ;
Zhu, Kaicheng ;
Chen, Yelei ;
Lei, Zhongcheng .
GEOFLUIDS, 2022, 2022
1234