Assessment of shrinkage-induced cracks in restrained and unrestrained cement-based slabs

Ababneh, Ayman; Al-Rousan, Rajai Z.; Alhassan, Mohammad A.; Sheban, Mashal A.

doi:10.1016/j.conbuildmat.2016.11.036

Cited by 14 publications

(8 citation statements)

References 14 publications

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“…In order to obtain as many width shrinkage cracks as possible, only one mix proportion is designed for four concrete slabs in this paper. To assess whether the conclusion about λ obtained by us is applicable to other mixes of concrete, we use the experimental data of Reference [10] for an appropriate discussion. In Reference [10], mortar and cement paste were designed with the mix proportion of 0.5, which is different from this paper.…”

Section: The Applicability Of λmentioning

confidence: 99%

“…To assess whether the conclusion about λ obtained by us is applicable to other mixes of concrete, we use the experimental data of Reference [10] for an appropriate discussion. In Reference [10], mortar and cement paste were designed with the mix proportion of 0.5, which is different from this paper. According to its measured depth and width of the shrinkage cracks, we can calculate the range of λ is 33.9-89.8 and the average is 47.13, which is similar to the conclusion of this paper.…”

Section: The Applicability Of λmentioning

confidence: 99%

“…Further, crack width is the only key parameter influencing chloride penetration. The approach to produce non-traversing cracks is a three-or four-point bending test [9] or shrinking concrete [10]. For this group, both the width and depth significantly influence the permeability of concrete [11], which varies along the crack length.…”

Section: Introductionmentioning

confidence: 99%

“…This indicates that the previous research conclusion of load cracks may not be suitable for shrinkage cracks. In addition, some studies show that the shrinkage cracks are developed randomly [10] and obey a certain distribution function [16]. However, it is difficult to ensure the validity of experimental data because the randomness leads to uncontrollable and unrepeatable crack shapes, and no meaningful regular conclusion has been reached.…”

Section: Introductionmentioning

confidence: 99%

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The Depth–Width Correlation for Shrinkage-Induced Cracks and Its Influence on Chloride Diffusion into Concrete

et al. 2020

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This study examined the depth–width correlation of actual shrinkage-induced cracks and its influence on the diffusion properties of concrete. An experimental setup of restrained slabs was utilized to induce the shrinkage cracks, and the geometry characteristics were quantified with image analysis technology. The results indicated the depth–width scaling λ of shrinkage cracks increases with crack width and was almost constant when the crack width was approximately 0.3 mm or more, and the tip angle of shrinkage cracks is about 1–2 degrees. The diffusion coefficients of concretes were measured by a conductivity test method. A series-parallel composite model with λ was devised to evaluate the diffusivity of shrinking cracked concrete. It was shown that the equivalent diffusion coefficient depended greatly on the crack depth instead of the crack width, and it was found to be a nonlinear relationship versus the width combining with λ . The diffusion coefficient of the crack Dcr was correlated to both crack width and λ , and increased with crack width. When the crack width is higher than 0.2 mm Dcr becomes constant, where the value obtained was 87% of the diffusion coefficient in free solution.

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Section: The Applicability Of λmentioning

confidence: 99%

Section: The Applicability Of λmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Depth–Width Correlation for Shrinkage-Induced Cracks and Its Influence on Chloride Diffusion into Concrete

et al. 2020

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“…Zachary Grasley and David A Lange buried humidity sensors in concrete specimens to evaluate the drying shrinkage stress gradient . In Ayman N. Ababneh's study, image analysis was taken and crack orientation was recorded and shown in a radar diagram . In Ya Wei and Will Hansen's study, the early‐age strain–stress development of mixtures containing slag cement was measured on uniaxial restrained specimens using a specially designed testing frame .…”

Section: Introductionmentioning

confidence: 99%

Calculation of visible crack width of concrete surface under temperature and shrinkage gradient deformations

2019

Structural Concrete

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Temperature and humidity conducting gradient and segregation of materials, could cause obvious gradient deformation and terrible‐looking cracks on concrete surface. Because of the complicated cracking mechanism and numerous influencing factors, the prediction work of this cracks width in engineering is always very difficult. Combined with material segregation characteristics, the deformations of temperature change and shrinkage are considered by layers, and the inter stresses between layers are calculated out. After taking into account the crack toughness, the crack depth and width are determined. When the width exceeds 0.05 mm that is the recognized macro‐fracture index, visible crack of concrete is considered to occur. Using this method, the crack widths under several typical working conditions were calculated, and their distribution and development characteristics were analyzed.

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Calcium Sulphoaluminate-Based Binders to Produce Expansive Concrete for Slabs on Ground

Coffetti,

Coppola

2023

Lecture Notes in Civil Engineering

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Assessment of shrinkage-induced cracks in restrained and unrestrained cement-based slabs

Cited by 14 publications

References 14 publications

The Depth–Width Correlation for Shrinkage-Induced Cracks and Its Influence on Chloride Diffusion into Concrete

The Depth–Width Correlation for Shrinkage-Induced Cracks and Its Influence on Chloride Diffusion into Concrete

Calculation of visible crack width of concrete surface under temperature and shrinkage gradient deformations

Calcium Sulphoaluminate-Based Binders to Produce Expansive Concrete for Slabs on Ground

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