Next Article in Journal
Mechanical Metamaterials on the Way from Laboratory Scale to Industrial Applications: Challenges for Characterization and Scalability
Next Article in Special Issue
Biological Self-Healing of Cement Paste and Mortar by Non-Ureolytic Bacteria Encapsulated in Alginate Hydrogel Capsules
Previous Article in Journal
Hydrogen Uptake and Embrittlement of Carbon Steels in Various Environments
Previous Article in Special Issue
Study of the Air-Entraining Behavior Based on the Interactions between Cement Particles and Selected Cationic, Anionic and Nonionic Surfactants
Open AccessArticle

Experimental Study of the Relaxation Properties of Carbon Fiber Cloth

1
College of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, China
2
Guangxi Key Laboratory of New Energy and Building Energy Saving, College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China
3
Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, China
4
Operation department, Guilin High-performance Concrete Materials Technology Limited Liability Company, Guilin 541004, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(16), 3603; https://doi.org/10.3390/ma13163603
Received: 14 July 2020 / Revised: 11 August 2020 / Accepted: 12 August 2020 / Published: 14 August 2020
(This article belongs to the Collection Concrete and Construction Materials)
In this study, a new method was proposed to study the relaxation properties of carbon fiber reinforced plastics (CFRP) fabric under axial tension. Under the condition of constant temperature and humidity, six groups of 168 h stress relaxation tests were conducted. Considering the influence of the prestress level, the size of CFRP cloth, and the surface coating of CFRP cloth on the relaxation performance, the measures to reduce the relaxation loss were proposed. The relaxation rate calculation model was established based on the test results of the authors and other scholars and was validated through comparisons with the test results. The results indicate that the relaxation rate of CFRP cloth was between 1.92% and 6.1%. When the prestress level was smaller than 0.3 fu, the relaxation rate of CFRP cloth decreased with the increase of prestress level. When the prestress level was greater than 0.3 fu, the relaxation rate increased with the increase of the prestress level. Under the same conditions, the relaxation rate of the CFRP specimens coated with glue was smaller than the uncoated samples by 3.21–6.28%. The calculation model could well estimate the relaxation rate of CFRP cloth. View Full-Text
Keywords: carbon fiber cloth; relaxation performance; experimental study; calculation model; prestress loss carbon fiber cloth; relaxation performance; experimental study; calculation model; prestress loss
Show Figures

Figure 1

MDPI and ACS Style

Wang, Q.; Song, H.-L.; Lu, C.-L.; Zhu, W.-X.; Huang, J.-Z. Experimental Study of the Relaxation Properties of Carbon Fiber Cloth. Materials 2020, 13, 3603.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop