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Multiscale Modeling and Simulation on Constructional Composite Materials and Structures
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Multiscale Modeling and Simulation on Constructional Composite Materials and Structures

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 4344

Special Issue Editors

Prof. Dr. Bin Xu

E-Mail Website
Guest Editor
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
Interests: multiscale simulation on RC structures; multiphysics simulation; FEM/XFEM/SEM; soft computation and artificial intelligence; NDT and SHM for engineering structures
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Liu Jin

E-Mail Website
Guest Editor
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
Interests: multi-scale analysis; concrete and RC components; multiple hazards; high-performance concrete; size effect

Special Issue Information

Dear Colleagues,

Concrete and cement-based materials still play an irreplaceable role in the construction of large-scale infrastructures today due to their widespread availability, cost-effectiveness, structural characteristics, and ability to be molded into limitless geometries. As typical multiphase composite materials, concrete and cement-based materials are composed of randomly distributed coarse and fine aggregates, mortar, interface transition zone (ITZ), and even initial cracks or pores. To date, the precise prediction of the performance of structures made of concrete and cement-based materials remains a challenging task. Multiscale modeling and simulation on concrete and cement-based materials and structures provide an alternative way to describe both their global and local performance with high efficiency and accuracy. Various mesoscale and multiscale modeling and simulation methodologies have been proposed to facilitate numerical simulation on the mechanical behavior of concrete, cement, as well as other kinds of composite constructional materials and structures. For example, modeling mesoscale or microscale concrete and cement-based materials as homogeneous material at the level of representative volume elements (RVEs) in three-dimensional (3D) problems or representative area elements (RAEs) in two-dimensional (2D) problems based on composite material mechanics provides an efficient way to enhance simulation efficiency. Furthermore, the Voigt parallel model, Reuss tandem model, Mori-Tanaka model, and self-consistent model are also widely used for multiscale analysis. The aim of this Special Issue is to generate discussion on the latest research advances in multiscale simulation on concrete and cement-based materials under various loading conditions and multiphysics fields. The Special Issue will publish full research articles and review papers. 

Dr. Bin Xu
Dr. Liu Jin
Guest Editors

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. Materials 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 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

  • 2D and 3D mesoscale and multiscale modeling methods
  • multiscale static and dynamic analysis of various structural members and systems
  • mesoscale equivalent homogenization
  • mircoscale modeling method
  • multiphysics and multiscale simulation for engineering structures

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Published Papers (2 papers)

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Research

21 pages, 6862 KiB  
Article
Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application
by Jianxiu Wang, Pengfei Liu, Jian Hu, Weiqiang Pan, Yanxia Long, Ansheng Cao, Huboqiang Li and Yuanwei Sun
Materials 2023, 16(3), 1052; https://doi.org/10.3390/ma16031052 - 25 Jan 2023
Cited by 4 | Viewed by 1824
Abstract
During underground space exploitation in the urbanization process, numerous foundation pits were constructed where a diaphragm wall was often used as a retaining structure and waterproof curtain. Due to complicated engineering geological conditions or improper construction, diaphragm walls and wall joints often exhibit [...] Read more.
During underground space exploitation in the urbanization process, numerous foundation pits were constructed where a diaphragm wall was often used as a retaining structure and waterproof curtain. Due to complicated engineering geological conditions or improper construction, diaphragm walls and wall joints often exhibit quality defects. Groundwater leaked from these quality defects to foundation pits during excavation, endangering the safety of the pit and surrounding facilities. The current leakage identification of the underground retaining structure was performed by artificial visual detection, which cannot satisfy the engineering requirement. The temperature field in the leakage area of the diaphragm wall was different from other areas. The leakage wall imaging system using a thermal imager was efficient in visualizing leaking, which was not visible to the naked eye. In this study, infrared thermal imaging technology was introduced in potential leakage detection for the diaphragm wall of a foundation pit. The infrared radiation characteristics of the diaphragm wall leakage and the potential leakage parts were studied through laboratory simulation tests and on-site detection methods. The maximum temperature appeared at the water outlet and the surface of the defect with hidden defect, and the temperature field was symmetrically distributed along the cross-section direction. In the potential leakage area, the temperature difference at the penetration point was 23.4 °C when the initial water pressure was 10 kPa. The temperature difference at the penetration point was 21.8 °C when the initial water pressure was 30 kPa. In the field test, the maximum temperature difference between the leakage area and the surrounding wall was 4.5 °C. The study can provide a reference for similar engineering. Full article
(This article belongs to the Special Issue Multiscale Modeling and Simulation on Constructional Composite Materials and Structures)
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27 pages, 19087 KiB  
Article
Conceptual Model, Experiment and Numerical Simulation of Diaphragm Wall Leakage Detection Using Distributed Optical Fiber
by Jianxiu Wang, Pengfei Liu, Rui Xue, Weiqiang Pan, Ansheng Cao, Yanxia Long, Huboqiang Li and Yuanwei Sun
Materials 2023, 16(2), 561; https://doi.org/10.3390/ma16020561 - 6 Jan 2023
Cited by 1 | Viewed by 1875
Abstract
Leakage in the diaphragm wall is difficult to detect in deep foundation pits. In this study, the conceptual model of active and passive thermal leak detection methods was proposed according to the occurrence of temperature field anomalies caused by seepage. Experiments were performed [...] Read more.
Leakage in the diaphragm wall is difficult to detect in deep foundation pits. In this study, the conceptual model of active and passive thermal leak detection methods was proposed according to the occurrence of temperature field anomalies caused by seepage. Experiments were performed using a heating system and an optical fiber temperature measurement system to verify the thermal leakage detection systems. Numerical simulations were performed to understand the mechanism of the detecting method. Results indicated that the optical cable could detect the low-temperature anomaly in the active temperature field leak detection. The arrangement method of the leakage detection system was also presented in actual engineering. Full article
(This article belongs to the Special Issue Multiscale Modeling and Simulation on Constructional Composite Materials and Structures)
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