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Quantifying Computed Tomography of Basalt Fiber-Reinforced Concrete under Unconfined Compression

Crystals (Basel), 2022-03, Vol.12 (3), p.360 [Peer Reviewed Journal]

2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2073-4352 ;EISSN: 2073-4352 ;DOI: 10.3390/cryst12030360

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Title:
Quantifying Computed Tomography of Basalt Fiber-Reinforced Concrete under Unconfined Compression
Author: Jiao, Huazhe ; Chen, Xi ; Yang, Xiaolin ; Wang, Yunfei ; Yang, Yixuan ; Chen, Xinming ; Yang, Liuhua ; Yu, Jianxin
Subjects: Angular distribution ; Avizo ; Basalt ; basalt fiber ; Carbon fibers ; Cement ; Compressive strength ; Computed tomography ; Concrete mixing ; CT scan ; Digital imaging ; Dosage ; fiber distribution ; Fiber reinforced concretes ; Fibers ; Horizontal orientation ; Image processing ; Mechanical properties ; Medical imaging ; Optimization ; Polymers ; porosity ; Quantitative analysis ; Reinforced concrete ; Research methodology ; Tomography ; Visual observation ; X-rays
Is Part Of: Crystals (Basel), 2022-03, Vol.12 (3), p.360
Description: The macroscopic aspects of adding basalt fiber (BF) to concrete has been the subject of studies that document great increases in compression strength. Research into the microscopic aspects of the reinforcement mechanism is still in an exploratory stage, and the quantitative analysis and visual observation of fibers in the concrete matrix are difficult. In this paper, the reinforcement effect of fiber on concrete is studied by means of computed tomography (CT) scanning technology and digital image processing (DIP) technology, combined with the macro-mechanical properties obtained from the unconfined compression strength test, and quantitative analysis from the micro point of view. At the same time, the fiber visualization is realized with the help of Avizo. The results show that with the increase in fiber dosage, the peak stress of concrete first increases and then decreases. When the fiber dosage is 3 kg/m3, the peak stress is 44.4 MPa, which is 41.85% higher than that of ordinary concrete. Additionally, the proportion of macropores is the least, which is the best fiber dosage. It is found that when the fiber dosage is 3 kg/m3, the angular distribution of φ is relatively uniform, and the uniform distribution of fibers forms a dense network structure, which significantly increases the peak stress of concrete. However, when the fiber dosage is too high, it will lead to the accumulation of fibers and produce macropores, and these excess fibers mainly appear in the horizontal direction and do not contribute to the compression strength.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 2073-4352
EISSN: 2073-4352
DOI: 10.3390/cryst12030360
Source: ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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Quantifying Computed Tomography of Basalt Fiber-Reinforced Concrete under Unconfined Compression

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