Durability and service life prediction of GFRP bars embedded in concrete under acid environment

Zhou, Jikai; Chen, Xudong; Chen, Shixue

doi:10.1016/j.nucengdes.2011.08.038

Cited by 66 publications

(41 citation statements)

References 30 publications

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“…The effects of seawater and warm environment was investigated e.g. in [8], while extreme temperatures were assessed in [9], as well as the consequences of exposure to acid solutions were considered for GFRP bars in [10].…”

Section: Introductionmentioning

confidence: 99%

Long-term bending performance and service life prediction of pultruded Glass Fibre Reinforced Polymer composites

Carra¹,

Carvelli

2015

Composite Structures

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Section: Introductionmentioning

confidence: 99%

Long-term bending performance and service life prediction of pultruded Glass Fibre Reinforced Polymer composites

Carra¹,

Carvelli

2015

Composite Structures

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“…At present, no standard durability test method exists, which makes it difficult to compare the results obtained by different researchers . Table shows the results of the durability test, with time and environmental conditions as indicators.…”

Section: Background and Research To Datementioning

confidence: 99%

Durability study on glass fiber reinforced polymer soil nail via accelerated aging test and long‐term field test

et al. 2015

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Replacing steel reinforcements with glass fiber reinforced polymer (GFRP) bars has emerged as one of the most promising solutions to the problem of corrosion in geotechnical engineering. Accelerated aging and field tests were conducted to investigate the durability of GFRP bars that were used as soil nails in slope reinforcement. Two types of E‐glass/(vinylester and unsaturated polyester) were immersed in alkaline and saline solutions for 60 d, 180 d and 360 d. Mechanical and physical experiments were carried out to obtain the tensile strength and identify the reasons for damage and strength reduction. A pullout test was carried out after the GFRP soil nails were embedded in a slope for three years. The accelerated aging test results showed that alkaline conditions had a larger influence on the degradation of GFRP bars than did saline solutions and that strength reduction generally occurred at an earlier stage for the alkaline conditions than for the saline solution. The corrosion resistance of an unsaturated polyester bar is much lower than that of the vinylester bar, and the bar diameter has a certain impact. From the field test results, it can be seen that the GFRP soil nails are durable and perform well at the task of supporting a slope. The technology for sensing fiber Bragg gratings (FBG) is very convenient for monitoring soil nails and is suitable for long‐term observation. POLYM. COMPOS., 38:2863–2873, 2017. © 2015 Society of Plastics Engineers

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“…Apparent activation energy, like the hydration rate, can be used to characterize the sensitivity of the AAS hydration rate to temperature changes. In the quantitative relationship between temperature and chemical reaction rate, the classical Arrhenius formula is produced [17], which is suitable for most reactions [18,19]. e concept of activation energy in the Arrhenius formula is based on chemical elementary reactions that represent the minimum energy required for a chemical reaction to star [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature and pH on Early Hydration Rate and Apparent Activation Energy of Alkali-Activated Slag

Tang

Chen

et al. 2019

Advances in Materials Science and Engineering

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In order to investigate the effect of temperature and pH on the early hydration rate of alkali-activated slag (AAS), NaOH was used as alkali activator, and the nonevaporable water (NEW) content of the slag paste at different temperatures (5, 20 and 35°C) and pH (12.10, 12.55, 13.02, and 13.58) was measured. On the basis of the Arrhenius formula, the hydration rate of slag was characterized by the content of nonevaporative water, and the apparent activation energy of slag hydration at different pH was also obtained. e early hydration rate of slag was significantly affected by temperature and pH of activator solution. e apparent activation energy E a of slag decreased with the increase of pH, and there was a good linear relationship between them. When pH was less than 13.02, increasing the temperature can accelerate the hydration rate of slag. However, under the condition of high pH (pH � 13.58), the hydration rate of slag was negatively correlated with temperature, which was related to the "shell forming" phenomenon of slag hydration.

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Durability and service life prediction of GFRP bars embedded in concrete under acid environment

Cited by 66 publications

References 30 publications

Long-term bending performance and service life prediction of pultruded Glass Fibre Reinforced Polymer composites

Long-term bending performance and service life prediction of pultruded Glass Fibre Reinforced Polymer composites

Durability study on glass fiber reinforced polymer soil nail via accelerated aging test and long‐term field test

Effect of Temperature and pH on Early Hydration Rate and Apparent Activation Energy of Alkali-Activated Slag

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