Cracking behavior of reinforced concrete piles externally bonded with carbon fiber reinforced polymer in a marine environment

Zhuang, Ning; Dong, Honghan; Zhou, Yujue; Chen, Da

doi:10.1016/j.conbuildmat.2018.09.185

Cited by 25 publications

(10 citation statements)

References 22 publications

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“…Zhuang et al [116] performed a fractal analysis of the crack patterns on the surface of reinforced concrete piles bonded with carbon fiber reinforced polymer. The factor causing the cracks was the corrosion of the reinforcement caused by a harsh marine environment.…”

Section: Chemical Corrosionmentioning

confidence: 99%

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Szeląg

2020

Materials

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The structure and the development degree of a cracking pattern has a key impact on the durability of cement composites. This literature review focuses on the four most important aspects related to the evaluation of the surface cracking patterns, i.e., the process of formation, propagation and evolution of cracks into a branched system of cracks from the point of view of the fracture mechanics; the detection techniques of the cracking patterns on the surface of cement composites, where the tools of computer image analysis are the most used; parameters which can quantify the development degree and morphology of the cracks system; and also the influence of a cracking pattern on the functional features of cement composites. The studies described so far indicate the necessity of continuous development of this research area, because the knowledge of key relationships between the cracking patterns and functional properties of a cement composite is necessary to estimate the degree of material degradation. Researchers agree that the works carried out in the field of evaluation of the cracking patterns, to a large extent, contributes to the development of non-destructive testing methods in the field of cement composites technology.

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Section: Chemical Corrosionmentioning

confidence: 99%

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Szeląg

2020

Materials

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“…The parameter that describes the degree of complexity of the difficult to describe flat and spatial structures, in terms of morphology, is the fractal dimension. Recent scientific research shows a growing interest in the fractal approach to analyzing the cracking patterns [ 57 , 58 , 59 ]. This approach requires the assumption that the cracks system on the surface of the material is a fractal, i.e., it has some fractal characteristics—it is shapeless (unambiguous shape is impossible to determine), an inability to describe the form with a mathematical relationship (only recursive dependency), and self-similarity (the isolated fragment is similar to a larger whole) [ 60 , 61 ].…”

Section: Description Of Experimentsmentioning

confidence: 99%

Application of an Automated Digital Image-Processing Method for Quantitative Assessment of Cracking Patterns in a Lime Cement Matrix

Szeląg

2020

Sensors

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The paper presents an original approach to the localization and analysis of the cracking patterns of cement composites. The lime cement matrix modified with microsilica was evaluated under a two-phase thermal load. For quantitative detection and analysis of thermal cracks, an image-processing method was applied. For this purpose, an original image double-segmentation method was developed using machine-learning algorithms. Among other things, the fractal analysis was used to describe the morphology and the thermal evolution of the cracking patterns. The basic mechanical characteristics were examined and the results indicated a very high correlation between tensile strength and all cracking patterns’ parameters. This allows high-quality estimation of the mechanical properties of the lime cement matrix to be carried out on the basis of measurement and evaluation of morphology of the thermal cracking patterns. Knowledge in this field contributes to the development of non-destructive testing methods in cement composites technology, in terms of localization of and tracking the cracking patterns.

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“…These damages gradually accumulate over time and affect the safe working and service life of hydraulic structures [3]. Cracking is one of the most significant causes of deterioration in the durability of concrete structures [4,5], particularly for concrete in aqueous environments [6,7], where the working environment is bad. They need to be repaired in time after defects occur, otherwise they will have a serious impact on the safe use and durability of the whole structure [8].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Practical Application of Silica Nanoparticles Composite Underwater Repairing Materials

et al. 2021

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Repairing materials are well-known to play an important role in rehabilitating and extending the service life for hydraulic concrete structures. However, current underwater repairing materials possess several problems, including insufficient bond tensile strength, inconsistency with the deformation of the old substrate, and insufficient underwater self-sealing ability. In the present paper, an experimental study was carried out to evaluate the influence of silica nanoparticles (SNs) on the properties of underwater composite-repairing materials. The underwater deformation, impermeability, bond tensile strength, and compressive strength of the SN-modified underwater composite-repairing materials were used as the properties’ evaluation indices. The results show that, within a certain range, the performance of the repairing material increase with increased SN percent. The deformability, impermeability grade, underwater bond tensile strength, and compressive strength of the SN-modified composite underwater repairing materials are 2.2%, 8, 2.91 MPa, and 115.87 MPa, respectively, when the mass ratio of the mortar, the curing agent and the SNs is 8:1:0.002. The proposed material is employed to repair the dam for a hydropower station in Guizhou province, China. Results show the seepage discharge is reduced by 8.6% when the dam is repaired. The annual average generating capacity is increased by 1.104 × 105 kWh. Meanwhile, CO2 and NOx emissions are reduced by 1.049 × 105 and 220.8 kg annually, respectively.

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Cracking behavior of reinforced concrete piles externally bonded with carbon fiber reinforced polymer in a marine environment

Cited by 25 publications

References 22 publications

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Evaluation of Cracking Patterns in Cement Composites—From Basics to Advances: A Review

Application of an Automated Digital Image-Processing Method for Quantitative Assessment of Cracking Patterns in a Lime Cement Matrix

Investigation and Practical Application of Silica Nanoparticles Composite Underwater Repairing Materials

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