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Applied Sciences
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Damage and Fracture Analysis of Concrete Structures
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Damage and Fracture Analysis of Concrete Structures

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2777

Special Issue Editor

Prof. Dr. Hailong Wang

E-Mail Website
Guest Editor
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
Interests: concrete materials and structures; fracture; damage; 3D printing; durability of reinforced concrete, multi-phase modeling; composite materials; strengthening of bridges and infrastructures; fatigue of concrete structures

Special Issue Information

Dear Colleagues,

A fundamental understanding of damage or fracture behavior is very important to produce a safe and effective design of concrete structures. Therefore, this Special issue of Applied Sciences, “Damage and Fracture Analysis of Concrete Structures”, intends to welcome all kinds of contributions addressing the damage and fracture behavior of concrete structures, as well as newly emerging structures. Contributions to the areas of material science related to damage and fracture mechanics are also the subject of this Special Issue. Papers on new testing and characterization techniques, new analysis procedures, numerical models, and methods for damage and fracture of engineering materials and structures, as well as the engineering applications of damage and fracture mechanics are also welcome.

Prof. Dr. Hailong Wang
Guest Editor

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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

  • damage
  • fracture
  • engineering materials
  • concrete structures
  • new testing and characterization method
  • mechanical model
  • numerical analysis
  • engineering application

Published Papers (2 papers)

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Research

20 pages, 7791 KiB  
Article
Investigation of Load–Displacement Characteristics and Crack Behavior of RC Beam Based on Nonlinear Finite Element Analysis Using Concrete Damage Plasticity
by Xuan-Bach Luu, Seong-Kyum Kim and Woosuk Kim
Appl. Sci. 2023, 13(21), 11798; https://doi.org/10.3390/app132111798 - 28 Oct 2023
Cited by 1 | Viewed by 1035
Abstract
Crack patterns provide critical information about the structural integrity and safety of concrete structures. However, until now, there has been a lack of sufficient studies on using the Finite Element (FE) method to investigate the characteristics of the crack patterns of reinforced concrete [...] Read more.
Crack patterns provide critical information about the structural integrity and safety of concrete structures. However, until now, there has been a lack of sufficient studies on using the Finite Element (FE) method to investigate the characteristics of the crack patterns of reinforced concrete (RC) beams. Therefore, this study aims to develop an FE model to analyze the load–displacement and crack characteristics of a beam under a four-point bending test using the concrete damaged plasticity (CDP) model that accounts for the influence of mesh size. The simulation results were validated against experimental results, including mesh convergence analysis, energy balance, load characteristics, and crack patterns. A parametric study was then conducted using this model to investigate the influence of the rebar’s diameter, number, and spacing on the RC beam’s load–displacement characteristics and crack behavior. The findings demonstrate that the FE model accurately simulates the working behavior of the RC beam, with a maximum deviation at a cracking load of 8.7% and crack patterns with a maximum deviation in the mean crack height of 12.1%. In addition, the results of the parametric study suggest that the rebar configuration significantly affects the RC beam’s loading carrying capacity. This study provides deeper insights into the use of FE modeling for analyzing the behavior of RC beams, which can be useful for designing and optimizing structures in civil engineering. Full article
(This article belongs to the Special Issue Damage and Fracture Analysis of Concrete Structures)
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17 pages, 12213 KiB  
Article
Research on the Effect of Karst on Foundation Pit Blasting and the Stiffness of Optimal Rock-Breaking Cement Mortar
by Ya Duan, Xuemin Zhang, Xianshun Zhou, Xinlei Chen and Hao Zhou
Appl. Sci. 2022, 12(23), 12153; https://doi.org/10.3390/app122312153 - 28 Nov 2022
Cited by 2 | Viewed by 1239
Abstract
The existence of karst cavities has an important impact on the safety of foundation pit excavation projects. It is of engineering guiding value to study the influence of karst cavities on the blasting process of foundation pits and how to optimize the stiffness [...] Read more.
The existence of karst cavities has an important impact on the safety of foundation pit excavation projects. It is of engineering guiding value to study the influence of karst cavities on the blasting process of foundation pits and how to optimize the stiffness of cement mortar to improve the blasting effect. Based on the karst foundation pit bench blasting project of Shenzhen Dayun Foundation Pit Project, this paper adopts the SPH-FEM coupling calculation method to study the influence of karst cavities, cavity-filling water and cavity-filling silt clay on the rock-blasting process of bench blasting. We analyzed the development process of blasting damage of rock when the stiffness of karst cavity grouting filling changes under the conditions of slightly weathered, moderately weathered and strongly weathered limestone. The calculation results show that the karst cavity near the blasthole changes the direction of the minimum resistance line, which leads to the release of blasting energy; the rock breaking effect is improved when the karst cavity is filled with water medium and clay medium. Under the three limestone conditions, after the karst cavity is pretreated by cement grouting, the increase in the stiffness of the cement mortar makes the rock damage area first increase and then decrease after the karst cavity implosion, and There is a critical cement mortar stiffness that makes the best rock breaking effect. The critical cement stiffness of micro-, medium- and strongly weathered limestone is 2.2%, 6.1% and 27% of the blasted rock mass, respectively, which makes the karst cavity wall stress reach the peak value, and the rock-breaking effect is the best at this time. Full article
(This article belongs to the Special Issue Damage and Fracture Analysis of Concrete Structures)
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