Research on Life Prediction of Nano-CaCO<sub>3</sub> Modified Concrete Based on Weibull Distribution

QIAO Hongxia; YANG An; YANG Bo; LI Yuanke; DU Hangwei

doi:10.13204/j.gyjzG21032911

Volume 52 Issue 1

Apr. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(1): 174-179

QIAO Hongxia, YANG An, YANG Bo, LI Yuanke, DU Hangwei. Research on Life Prediction of Nano-CaCO3 Modified Concrete Based on Weibull Distribution[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 174-179. doi: 10.13204/j.gyjzG21032911

Citation:

QIAO Hongxia, YANG An, YANG Bo, LI Yuanke, DU Hangwei. Research on Life Prediction of Nano-CaCO₃ Modified Concrete Based on Weibull Distribution[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 174-179. doi: 10.13204/j.gyjzG21032911

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Research on Life Prediction of Nano-CaCO₃ Modified Concrete Based on Weibull Distribution

doi: 10.13204/j.gyjzG21032911

QIAO Hongxia^1,2,
YANG An^{1
,
,},
YANG Bo¹,
LI Yuanke¹,
DU Hangwei¹

1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Key Laboratory of Disaster Prevention and Mitigation of Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China

Received Date: 2021-03-29
Available Online: 2022-04-24

Abstract

Abstract

In order to solve the durability of concrete in the Salt Lake area of Western and extend its service life, the sulfate resistance of semi-immersed nano-CaCO₃ modified concrete was studied. The quality loss and relative dynamic modulus of elasticity were evaluated regularly, and the durability of the concrete was analyzed; at the same time, the durability degradation model of nano-CaCO₃ modified concrete was established by Weibull function. The results showed that the relative mass and relative dynamic modulus of elasticity of the specimens were obviously enhanced in the age of 0-180 d. After 180 d, the durability of the specimens gradually degenerated, among which the evaluation parameters of relative dynamic modulus of elasticity were more sensitive, which could clearly reflect the durability degradation of the specimens; the probability density function and reliability function were obtained by Weibull function modeling and calculation. The longest service life of nano-CaCO₃ modified concrete could reach 693 d in sulfate environment.
- concrete,
- nano-CaCO₃,
- sulfate corrosion,
- Weibull function,
- life prediction

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References

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