Monitoring crack movement in polymer-based self-healing concrete through digital image correlation, acoustic emission analysis and SEM in-situ loading

Belie, Nele De; Tsangouri, Eleni; Gruyaert, Elke; Lors, Christine; Louis, G.; Belie, Nele De

doi:10.1016/j.matdes.2016.11.050

Cited by 74 publications

(38 citation statements)

References 10 publications

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“…With the increase in environmental protection awareness, these environmentally unfriendly repair materials must be eliminated. In addition, the repair effect of these substances is not very significant due to compatibility issues with the concrete substrate, so researchers from various countries have been working toward environmentally friendly and sustainable repair of biological systems [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, biomineralization can often form an ordered natural organic-inorganic composite material with excellent structure. In view of this, in recent years, microbiologically induced calcium carbonate precipitation (MICP) technology based on microbial mineralization has become a hot topic in concrete self-healing technology and has attracted widespread attention in the academic community [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Research on Improving Concrete Durability by Biomineralization Technology

Chen

Tang

2020

Sustainability

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The interfacial transition zone (ITZ) around aggregates in concrete is a weak area with higher porosity than the matrix; it breaks easily under stress and is not conducive to the durability of concrete. However, the ITZ in concrete is full of calcium hydroxide crystals, which can provide the calcium source required for biomineralization. In view of this, this study aims to use the biological activity (i.e., biomineralization technology) existing in nature to enhance the ITZ in concrete and repair concrete cracks to improve the strength and durability of concrete. In this study, the bacterial strain Sporosarcina pasteurii, which is environmentally friendly, was selected. In addition, lightweight aggregate was used as a bacterial carrier. The bacteria were first sporulated. To protect the strains, the biological species were fixed in porous lightweight aggregates. These lightweight aggregates were then used as concrete aggregates. The planned tests included concrete engineering properties (i.e., compressive strength, chloride ion penetration, and water permeability tests) and residual strength after crack repair. The test results show that the use of lightweight aggregate as a carrier and the implantation of Sporosarcina pasteurii can induce biomineralization, strengthen the ITZ, and repair small internal cracks in concrete, thereby improving the strength and durability of the concrete.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Improving Concrete Durability by Biomineralization Technology

Chen

Tang

2020

Sustainability

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“…This method is often used to measure full-field displacement and strains. AE analysis coupled with DIC was successfully applied by Feiteira et al [12] for precise detection of brittle failure under a developing crack movement. The brittle failure occurring due to excessive strain on the polymer bridging the healed crack generated acoustic emissions with an energy level of Appl.…”

Section: Introductionmentioning

confidence: 99%

Lamb-Wave-Based Method in the Evaluation of Self-Healing Efficiency

et al. 2020

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The aim of this research is a feasibility study of self-healing process monitoring in composite laminates. A novel nondestructive method based on the full wavefield of Lamb wave processing is proposed. Experimental verification is presented for glass-fiber-reinforced polymer plate with embedded self-healing function in the form of a dry microcapsule powder. After impacting the specimen to create barely visible impact damage, a series of laser vibrometer full wavefield measurements were carried out and processed to assess self-healing efficiency.

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“…Examples of nonoptical sensors are acoustic emission sensors, 1 capacitive sensors, 2 ultrasonic sensors, 3 strain gauges, 4 carbon nanotubes, 5 temperature sensors, 6 and Linear Variable Differential Transformer (LVDT) sensors, 7 whereas optical sensors include fiber Bragg gratings, 8 optical fibers, 9 image analysis methods, 10,11 hyper-spectral image processing, 12 and digital image correlation. 13 Over the past decade, we have developed optical-mechanical sensors based on the moiré effect that can be applied for real-time crack monitoring in concrete structures. [14][15][16][17][18] In the following sections, a comprehensive review of the previously developed moiré sensors by the author's team and other researchers is provided followed by a review of other types of crack sensing methods.…”

Section: Introductionmentioning

confidence: 99%

Novel moiré‐based crack monitoring system with smartphone interface and cloud processing

Ratnam

Ooi

Yen

2019

Struct Control Health Monit

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Summary A popular optical‐mechanical method used to monitor crack growth in concrete structures is based on the moiré effect. The moiré patterns are usually interpreted manually using a read‐out chart or by off‐line processing using custom‐made application software installed in a personal computer. Such methods are not convenient for on‐site crack inspection and measurement. In this work, cloud‐based application software has been developed that can be used to process moiré pattern images sent via a standard smartphone. The moiré pattern resulting from the overlapping of two circular gratings mounted across a crack is captured using the smartphone camera, cropped, and sent via Wi‐Fi or mobile data to cloud server. The cloud server software receives the moiré pattern image and processes it using an image processing algorithm to return the displacement magnitude and direction to the mobile device within a few seconds. The communication between the mobile software and cloud software is via Representational State Transfer protocol that allows further development to accommodate other client platforms. The accuracy of the algorithm has been tested by comparing the displacement data returned by the cloud server using controlled experiment. In the experiment, the gratings were subjected to in‐plane displacement along two orthogonal axes using 0.001‐mm resolution digital micrometers. The results show that the displacement magnitude and displacement direction can be determined within an accuracy of ±0.05 mm and ±5°, respectively. The smartphone interface with cloud processing of moiré patterns is shown to be a promising tool for on‐site crack inspection and monitoring.

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Monitoring crack movement in polymer-based self-healing concrete through digital image correlation, acoustic emission analysis and SEM in-situ loading

Cited by 74 publications

References 10 publications

Research on Improving Concrete Durability by Biomineralization Technology

Research on Improving Concrete Durability by Biomineralization Technology

Lamb-Wave-Based Method in the Evaluation of Self-Healing Efficiency

Novel moiré‐based crack monitoring system with smartphone interface and cloud processing

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