Quantitative damage evaluation of concrete suffered freezing–thawing by DIP technique

Li, Shuguang; Chen, Gaixin; Guo-jin, JI; Lu, Yao

doi:10.1016/j.conbuildmat.2014.07.072

Cited by 34 publications

(7 citation statements)

References 15 publications

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“…Crack lengths are calculated by extracting crack centerlines and taking their lengths as representative. The crack area is the product of the number of pixel units that belong to the crack region and the individual pixel area . The crack width is calculated by dividing a crack area by its length.…”

Section: Resultsmentioning

confidence: 99%

“…The crack area is the product of the number of pixel units that belong to the crack region and the individual pixel area. 36,37 The crack width is calculated by dividing a crack area by its length. Crack fractal dimension is calculated, using the "Box Counting" methodology and the MATLAB batch process, to obtain the related fractal dimensions.…”

Section: Effect Of Strain Rate On Failure Patternmentioning

confidence: 99%

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Experimental study on the dynamic mechanical properties of concrete under freeze–thaw cycles

Han

Tian

2018

Structural Concrete

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This study investigated the dynamic mechanical properties of concrete subjected to freeze–thaw cycles. Freeze–thaw cycle experiments were carried out using a freeze–thaw tester to vary the temperature from 20 ± 2 °C to −20 ± 2 °C, from 0 to 100 cycles. Uniaxial compression tests were performed with a tested strain rate ranging from 1.0 × 10−5/s to 1.0 × 10−2/s using a servo‐hydraulic testing machine. Dynamic compressive strengths were measured and the effects of freeze–thaw cycles and strain rates were investigated. The experimental results suggested that the dynamic compressive strength of specimens generally decreased as the number of freeze–thaw cycles increased, and the dynamic compressive strength was significantly affected by strain rates. The dynamic compressive strength of concrete and the dynamic increase factor both increased with increased strain rate. X‐ray computed tomography scanning was used to study the strain‐rate effects on internal structure damage in the specimens. Cracks propagated along two different paths, passing along the aggregate–mortar interfaces and passing through the aggregates along the failure surfaces.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Strain Rate On Failure Patternmentioning

confidence: 99%

Experimental study on the dynamic mechanical properties of concrete under freeze–thaw cycles

Han

Tian

2018

Structural Concrete

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“…Frost damage aggravates the concrete degradation. More cracks and pores are formed after suffering frost damage, and the protection provided by concrete is decreased [28][29][30]. More passageways are provided for chloride penetration under the environment exposed to the chloride penetration, and they increase the steel corrosion rate.…”

Section: Steel Corrosion Behavior For Various Reinforcedmentioning

confidence: 99%

Influence of Freeze-Thaw Damage on the Steel Corrosion and Bond-Slip Behavior in the Reinforced Concrete

Fang¹,

Zhao

2016

Advances in Materials Science and Engineering

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This paper mainly studies the behavior of steel corrosion in various reinforced concrete under freeze-thaw environment. The influence of thickness of concrete cover is also discussed. Additionally, the bond-slip behavior of the reinforced concrete after suffering the freeze-thaw damage and steel corrosion has also be presented. The results show that the freeze-thaw damage aggravates the steel corrosion in concrete, and the results become more obvious in the concrete after suffering serious freeze-thaw damage. Compared with the ordinary concrete, both air entrained concrete and waterproofing concrete possess better resistance to steel corrosion under the same freeze-thaw environment. Moreover, increasing the thicknesses of concrete cover is also an effective method of improving the resistance to steel corrosion. The bond-slip behavior of reinforced concrete with corroded steel decreases with the increase of freeze-thaw damage, especially for the concrete that suffered high freeze-thaw cycles. Moreover, there exists a good correlation between the parameters of bond-slip and freeze-thaw cycles. The steel corrosion and bond-slip behavior of reinforced concrete should be considered serious under freeze-thaw cycles environment, which significantly impact the durability and safety of concrete structure.

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“…In addition, the workload is hefty, and the artificial factor has a significant effect on the results. With the development of technology, many image processing techniques have been used to study material damage, such as the digital image processing (DIP) technique [9,10], X-ray computed tomography [11], high speedcamera [12], ultrasonic imaging [13], scanning electron microscopy (SEM) [14], and magnetic resonance imaging [15,16]. Besides, the nondestructive testing methods are also introduced to assess degeneration of materials, which are the fundamental transverse frequencies [17]and acoustic emission [18,19].…”

Section: Introductionmentioning

confidence: 99%

Research on Real-Time Monitoring of Strain Behavior of Concrete under Freezing-Thawing Cycle by White Light Interferometer

Kong

Ren

et al. 2022

Advances in Materials Science and Engineering

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To study the degenerative process of concrete subjected to freezing-thawing (F-T) cycles in real-time, the strain behavior of concrete cylinder was monitored by a fiber optic F-T testing method based on the white light interferometer (WLI) technique. The principle of the WLI technique was described in detail and the design of the fiber optic testing method. Two mixed proportions of concrete immersed in 3.5% NaCl solution were tested in a freeze-thaw testing machine. The theory and method of temperature compensation were stated in detail. The results indicated that the variation of strain decreases in the cooling stage and increases in the heating stage in a F-T cycle. The residual strain was generated in the test.

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Quantitative damage evaluation of concrete suffered freezing–thawing by DIP technique

Cited by 34 publications

References 15 publications

Experimental study on the dynamic mechanical properties of concrete under freeze–thaw cycles

Experimental study on the dynamic mechanical properties of concrete under freeze–thaw cycles

Influence of Freeze-Thaw Damage on the Steel Corrosion and Bond-Slip Behavior in the Reinforced Concrete

Research on Real-Time Monitoring of Strain Behavior of Concrete under Freezing-Thawing Cycle by White Light Interferometer

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