RESEARCH ON DURABILITY OF FIBER REINFORCED CONCRETE BASED ON WIENER DEGRADATION PROCESS

QIAO Hongxia; LI Aoyang; LI Jiangchuan; FU Yong; ZHU Feifei

doi:10.13204/j.gyjzG20062808

Volume 51 Issue 6

Oct. 2021

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QIAO Hongxia, LI Aoyang, LI Jiangchuan, FU Yong, ZHU Feifei. RESEARCH ON DURABILITY OF FIBER REINFORCED CONCRETE BASED ON WIENER DEGRADATION PROCESS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(6): 165-169. doi: 10.13204/j.gyjzG20062808

Citation:

QIAO Hongxia, LI Aoyang, LI Jiangchuan, FU Yong, ZHU Feifei. RESEARCH ON DURABILITY OF FIBER REINFORCED CONCRETE BASED ON WIENER DEGRADATION PROCESS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(6): 165-169. doi: 10.13204/j.gyjzG20062808

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RESEARCH ON DURABILITY OF FIBER REINFORCED CONCRETE BASED ON WIENER DEGRADATION PROCESS

doi: 10.13204/j.gyjzG20062808

1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Engineering Research Center of Western China Civil Engineering Disaster Prevention and Mitigation, Ministry of Education, Lanzhou 730050, China

Received Date: 2020-06-28
Available Online: 2021-10-27

Abstract

Abstract

To study the durability and service life of fiber reinforced concrete in severe cold areas, an accelerated life test of fiber reinforced concrete under temperature changes was designed. The mass loss and relative dynamic modulus of the specimen were periodically measured, and its durability based on the measured data was evaluated and analyzed. At the same time, based on the univariate Wiener degradation process, modeling and accelerated life prediction were conducted. The results showed that as the number of freeze-thaw cycles increased, the specimen was gradually damaged and deteriorated, and the relative mass and relative dynamic elastic modulus of the specimen could effectively reflect the damage process, and the relative dynamic elastic modulus as the evaluation parameter could more accurately and truly reflect the damage and deterioration of the specimen. Reliability modeling was carried out through the univariate Wiener degradation process, and the relative dynamic elastic modulus of specimens was used as the degradation index. After calculation using this model, the probability density function and reliability function of the specimen could be obtained. Data fitting was performed on the results, and it was determined that the longest service life of the fiber reinfoned concrete specimen could reach about 3 500 h under the test conditions.
- fiber reinforced concrete,
- accelerated life test,
- durability,
- Wiener degradation process,
- reliability

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References(20)

References

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