Effect of Salt Spray Corrosion on Durability Performance of Fiber Concrete Based on GM（1，1）‑Markov Model

被引：0

作者：

Yu J. ^{[1
]}

Qiao H. ^{[1
,2
]}

Zhu F. ^{[1
]}

Wang X. ^{[1
]}

机构：

[1] School of Civil Engineering, Lanzhou University of Technology, Lanzhou

[2] Western Civil Engineering Disaster Prevention and Mitigation Engineering Research Center, Ministry of Education, Lanzhou University of Technology, Lanzhou

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2022年 / 25卷 / 09期

关键词：

damage and deterioration; fiber concrete; GM（1,1）‑Markov; salt spray environment;

D O I：

10.3969/j.issn.1007-9629.2022.09.004

中图分类号：

学科分类号：

摘要：

Taking the volume fraction of basalt‑polycinyl alcohol（PVA） fiber as the variable parameter， the indoor salt spray accelerated corrosion test was carried out. The damage and deterioration was evaluated and analyzed from the macro and micro aspects through the compressive corrosion resistance coefficient Kf， relative quality evaluation parameter ξ1， relative dynamic elastic modulus evaluation parameter ξ2 and scanning electron microscope （SEM） images， and the life of the fiber concrete was predicted based on GM（1，1）‑Markov model. The results show that the Kf of the fiber concrete increases first and then decreases in the salt spray environment， ξ1 fluctuates greatly， and ξ2 can be used as the decisive factor for evaluate the damage and deterioration of fiber concrete. The data based on GM（1，1）‑Markov model agrees well with the test data. The optimum volume fraction of basalt and PVA fiber is 0.10% and 0.01% respectively. The specimen with the optimum volume fraction has the longest service time under the salt spray environment， reaching 680 d. © 2022 Tongji University. All rights reserved.

引用

页码：910 / 916

页数：6

共 11 条

[1] ZHANG Guangtai, ZHANG Xiaoxu, TIAN Huxue, Bending bearing capacity of hybrid fiber lithium slag concrete beam under salt freezing environment［J］, Journal of Building Materials, 23, 4, (2020)
[2] MENG C M, LI W Z, CAI L C, Experimental research on durability of high‑performance synthetic fibers reinforced concrete：Resistance to sulfate attack and freezing‑thawing［J］, Construction and Building Materials, 262, (2020)
[3] GUO X L, XIONG G Y, Resistance of fiber‑reinforced fly ash‑steel slag based geopolymer mortar to sulfate attack and drying‑wetting cycles［J］, Construction and Building Materials, 269, (2021)
[4] WANG Zhenshan, LI Haowei, WU Bo, Et al., Experimental research on durability and mechanical properties of basalt fiber reinforced concrete in sodium hydroxide environment［J］, Journal of Applied Mechanics, 36, 5, (2019)
[5] GUO L, WU Y Y, XU F, Sulfate resistance of hybrid fiber reinforced metakaolin geopolymer composites［J］, Composites Part B, 183, (2020)
[6] WANG Li, Lihua XU, DENG Fangqian, Interfacial bonding performance between corrugated steel fiber and hybrid fiber concrete matrix［J］, Journal of Buiding Materials, 23, 4, (2020)
[7] YOUSUF M, AI B, AVCI E, A modified GM（1，1） model to accurately predict wind speed［J］, Sustainable Energy Technologies and Assessments, 43, (2021)
[8] WANG Q S, YI Y, MA G W, Hybrid effects of steel fibers， basalt fibers and calcium sulfate on mechanical performance of PVA‑ECC containing high‑volume fly ash［J］, Cement and Concrete Composites, 97, (2019)
[9] CHENG H B, LIU T J, ZOU D J, Compressive strength assessment of sulfate‑attacked concrete by using sulfate ions distributions［J］, Construction and Building Materials, 293, (2021)
[10] QIAO Hongxia, Guobin QIAO, Chenggong LU, Damage and deterioration model of concrete based on COMSOL in sulfate environment［J］, Journal of Huazhong University of Science and Technology （Natural Science）, 49, 3, (2021)

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