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Research on the Crack Control of Concrete
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Research on the Crack Control of Concrete

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 4427

Special Issue Editors

Dr. Lepeng Huang

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Guest Editor
School of Civil Engineering, Chongqing University, Chongqing 400045, China
Interests: high-strength concrete; sea water sea sand concrete; green concrete; bond stress; shrinkage stress; interior restraint; cracking in early age
Dr. Zuowei Liu

E-Mail
Guest Editor
School of Civil Engineering, Yantai University, Yantai 264005, China
Interests: concrete modification; concrete composites; fly ash concrete; recycled coarse aggregate concrete; life cycle assessment; sustainability; flexural strength; tensile splitting strength
Lin Chen

E-Mail Website
Guest Editor Assistant
School of Civil Engineering, Chongqing University, Chongqing 400045, China
Interests: high-strength concrete; mechanical property; fly ash concrete; decarburization; green construction; sustainable construction materials; green building materials

Special Issue Information

Dear Colleagues,

Concrete is one of the most commonly used materials in building construction; however, cracking is a significant challenge constraining its performance and longevity. This Special Issue focuses on the latest research developments in the concrete cracking control field, providing a platform for engineers, researchers and experts in related fields to gain insight into and discuss the subject. This Special Issue aims to cover a representative range of research and review papers on various aspects of concrete cracking, including cracking mechanisms, prevention measures, material modification, design guidelines and structural performance. These papers present readers with new theories, design methods, construction techniques and innovative materials to reduce the risk of cracking and enhance the performance and durability of concrete structures. Our academic committee has rigorously reviewed these papers to ensure their quality and innovation. Through these papers, we hope to provide an in-depth understanding of concrete cracking problems to our readers and to advance research and practice in this relevant field.

Dr. Lepeng Huang
Dr. Zuowei Liu
Guest Editors

Lin Chen
Guest Editor Assistant

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Buildings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • concrete cracking
  • crack control
  • cracking mechanisms
  • prevention strategies
  • material modification
  • design guidelines
  • structural performance
  • durability
  • innovative solutions
  • research advancements

Published Papers (4 papers)

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Research

13 pages, 2855 KiB  
Article
Plastic Zone Radius Criteria for Crack Propagation Angle Evaluated with Experimentally Obtained Displacement Fields
by Jorge Guillermo Díaz-Rodríguez, Alberto David Pertúz-Comas, Oscar Rodolfo Bohórquez-Becerra, Arthur Martins Barbosa Braga and Darío Prada-Parra
Buildings 2024, 14(2), 495; https://doi.org/10.3390/buildings14020495 - 10 Feb 2024
Cited by 1 | Viewed by 686
Abstract
The monitoring and maintenance of cracked structures are generally carried out using structural integrity assessments. The plastic zone (PZ) crack path (CP) criteria state that a crack grows in a specific direction when the radius of the plastic zone ahead of the crack [...] Read more.
The monitoring and maintenance of cracked structures are generally carried out using structural integrity assessments. The plastic zone (PZ) crack path (CP) criteria state that a crack grows in a specific direction when the radius of the plastic zone ahead of the crack tip reaches a minimum value. The PZ can be evaluated using stress intensity factors (SIFs). The SIFs under mixed-mode loading were extracted from the literature from three samples: two single edge notch tension (SENT) samples (E = 2.5 GPa, v = 0.38) made from polycarbonate and one modified compact test (C(T)) sample made from low-carbon steel (E = 200 GPa, v = 0.3). In addition, the CP angle was evaluated for the W and R criteria with experimental data, which included non-linear effects such as fatigue-induced plasticity, crack roughness, and debris. It was found that both can predict the CP for lateral cracks in both tested materials and monotonic and cyclic load when the mode mixity does not change considerably from one crack length to the next or goes beyond 0.2. Moreover, the R criterion exhibited an error as high as 1.7%, whereas the W criterion showed a 6% error on the last crack length for the low-carbon steel sample under cyclic load, which had a 100% increase in mode mixity. Finally, the applicability of LEFM was checked, while the CP was sought by finding the size of the PZ. Full article
(This article belongs to the Special Issue Research on the Crack Control of Concrete)
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21 pages, 7453 KiB  
Article
A Quasi-2D Exploration of Mixed-Mode Fracture Propagation in Concrete Semi-Circular Chevron-Notched Disks
by Xiaoqing Lu and Guanxi Yan
Buildings 2023, 13(10), 2633; https://doi.org/10.3390/buildings13102633 - 19 Oct 2023
Viewed by 893
Abstract
Most semi-circular bend (SCB) tests on concrete have been conducted with a pre-crack with a straight-through tip, thereby undermining the determination of the tensile fracture toughness (KIc). Therefore, the present study involved mixed-mode (tensile–shearing) fracture propagation in concrete semi-circular chevron-notched [...] Read more.
Most semi-circular bend (SCB) tests on concrete have been conducted with a pre-crack with a straight-through tip, thereby undermining the determination of the tensile fracture toughness (KIc). Therefore, the present study involved mixed-mode (tensile–shearing) fracture propagation in concrete semi-circular chevron-notched disks (i.e., with a sharp notch tip) using SCB tests and the FRANC2D numerical simulation software. The inclined notch angle (β) was varied from 0° to 70° while the other settings remained fixed, and the crack mouth opening displacement (CMOD) of the notch was measured constantly. The stress distribution was analyzed using finite-element simulations, and the experimental results showed that this testing method was robust. The maximum failure load and the fracture propagation angle increased with β, and wing fracture was observed. With FRANC2D simulating these SCB tests successfully, it was found that the tensile stress concentration around the notch tip moved toward the upper face of the notch, and the compressive stress concentration formed on the notch tip. The tensile mode was generated as the CMOD kept increasing for β = 0–30°, whereas the mixed mode became more evident as the CMOD kept decreasing for β = 45–70°. The fracture process zone was found for β = 0–30° but not for β = 45–70°. This mixed-mode fracture is predicted better by the criterion of extended maximum tangential strain than by other criteria, and there is a linear relationship between CMOD and KIc, as examined previously for pavement and concrete materials. Full article
(This article belongs to the Special Issue Research on the Crack Control of Concrete)
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25 pages, 18279 KiB  
Article
Moisture Diffusion Coefficient of Concrete under Different Conditions
by Fengbin Zhou, Wenhao Li, Ying Hu, Lepeng Huang, Zhuolin Xie, Jun Yang, Daifeng Wu and Zhonghao Chen
Buildings 2023, 13(10), 2421; https://doi.org/10.3390/buildings13102421 - 22 Sep 2023
Cited by 20 | Viewed by 1298
Abstract
Humidity change in concrete is the leading cause of concrete shrinkage. Moreover, the moisture diffusion coefficient of concrete is an essential parameter for assessing and predicting the internal moisture content of concrete. However, there is a lack of theoretical construction and experimental studies [...] Read more.
Humidity change in concrete is the leading cause of concrete shrinkage. Moreover, the moisture diffusion coefficient of concrete is an essential parameter for assessing and predicting the internal moisture content of concrete. However, there is a lack of theoretical construction and experimental studies on the effect of different conditions, especially different constraints, on the moisture diffusion coefficient of concrete. Therefore, the internal humidity, pore structure parameters, and basic mechanical properties of concrete under different strength grades C30, C40, C50, and C60 (C stands for concrete and numbers indicate the strength class of the concrete), curing environments (dry and sealed curing conditions), and constraints were tested in this study. In addition, a calculation model of concrete’s internal humidity and humidity diffusion coefficient was established. The research findings show that the internal humidity of concrete decreased with age due to hydration and drying. External humidity had a significant effect on the moisture change of concrete, and the lower the external humidity, the larger the humidity diffusion coefficient and the faster the internal humidity of concrete decreases. Reinforcement (confinement) changes the pore structure parameters of the concrete, which in turn affects the transport of moisture within the concrete. The higher the reinforcement rate, the larger the pore structure parameters of the concrete, the larger the humidity diffusion coefficient, and the faster the concrete humidity decreases. The method proposed in the study can accurately predict the internal humidity of concrete using the humidity diffusion coefficient. The research results are a reference for preventing concrete shrinkage and cracking in construction. Full article
(This article belongs to the Special Issue Research on the Crack Control of Concrete)
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22 pages, 4473 KiB  
Article
Early Shrinkage Modeling of Complex Internally Confined Concrete Based on Capillary Tension Theory
by Fengbin Zhou, Hao Jiang, Lepeng Huang, Ying Hu, Zhuolin Xie, Zhikai Zeng, Maoyi Liu, Bo Wang and Xingyang Zhou
Buildings 2023, 13(9), 2201; https://doi.org/10.3390/buildings13092201 - 29 Aug 2023
Cited by 22 | Viewed by 1003
Abstract
This paper evaluates the shrinkage performance of concrete under complex internal constraint environments comprising steel plates, studs, and reinforcement to investigate their respective influence laws on the shrinkage performance of concrete. An early shrinkage model of concrete under complex internal constraints was established [...] Read more.
This paper evaluates the shrinkage performance of concrete under complex internal constraint environments comprising steel plates, studs, and reinforcement to investigate their respective influence laws on the shrinkage performance of concrete. An early shrinkage model of concrete under complex internal constraints was established based on the theory of capillary tension, and the effects of steel plate, nails, and steel reinforcement on the shrinkage performance of concrete were theoretically analyzed. Six sets of concrete-constrained shrinkage tests and pore structure tests were then performed under different internal constraint conditions with the steel plate thickness, reinforcement diameter, and stud-related parameters (stud diameter, height, and spacing) as research variables. The test results demonstrate that the pore structure of concrete increases with the increase in the constraint coefficient, and that the increase in the pore structure will cause a decrease in the capillary pore stress, which is the driving force of concrete shrinkage. Its decrease will inevitably lead to a decrease in concrete shrinkage. By comparing the calculated values of the shrinkage model with the measured values, it is found that the average value of the prediction error is less than 15%, which reveals that the predicted values of shrinkage are in good agreement with the measured values and proves that the model can effectively predict the shrinkage of concrete that is restrained by steel plates, pins, and reinforcing bars. Full article
(This article belongs to the Special Issue Research on the Crack Control of Concrete)
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