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Polymer Materials in Building and Construction
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Polymer Materials in Building and Construction

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Analysis and Characterization".

Deadline for manuscript submissions: closed (20 July 2023) | Viewed by 9647

Special Issue Editors

Prof. Dr. Besarion Meskhi

E-Mail Website
Guest Editor
Department of Life Safety and Environmental Protection, Don State Technical University, 344003 Rostov-on-Don, Russia
Interests: steel reinforcement; polymer composite reinforcement; fiber reinforcement; nanomodified concrete; lightweight dispersion-reinforced concrete; glass fiber; dispersion-reinforcing fiber; fiber concrete; concrete matrix; strength characteristics; strain characteristics; polymer fibers; polymer reinforcement; mechanics of polymers; polymers creep
Prof. Dr. Alexey Beskopylny

E-Mail Website
Guest Editor
Department of Transport Systems, Faculty of Roads and Transport Systems, Don State Technical University, 344003 Rostov-on-Don, Russia
Interests: mechanical properties; finite element analysis structural analysis; structural dynamics; finite element modeling; mechanical behavior of materials; mechanical testing construction; construction engineering mechanics of materials; polymer fibers; polymer reinforcement; mechanics of polymers; polymers creep
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is aimed at finding solutions to scientific and applied problems of obtaining and using polymeric materials in buildings and construction. The fundamental and applied problems of modern building materials science, building production technologies and calculation methods, the relevance of which has recently been increasing due to the rising pace of construction, are considered. This Special Issue is devoted to new production technologies, methods of calculation, design and strengthening of polymers, polymer concrete, plastic materials, products and structures with increased efficiency. The Issue welcomes articles aimed at creating new and improving existing technologies for polymer, polymer concrete, plastic materials, products and structures, improving and modernizing calculation and reinforcement methods, as well as new analytical, mathematical, chemical and experimental methods for studying the structure of polymer materials in construction.  

Prof. Dr. Besarion Meskhi
Prof. Dr. Alexey Beskopylny
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. Polymers 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 2700 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

  • polymer concretes
  • polymer composite reinforcement
  • dispersed-reinforcing fiber
  • fiber-reinforced concrete
  • carbon fiber for strengthening concrete and reinforced concrete structures
  • polymer building products and structures
  • plastic building structures
  • plastics

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Published Papers (5 papers)

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Research

23 pages, 3539 KiB  
Article
Optimal Design of Multi-Scale Fibre-Reinforced Cement-Matrix Composites Based on an Orthogonal Experimental Design
by Kaixin Qiu, Song Chen, Chen Wang, Bowei Yang and Jiuhong Jiang
Polymers 2023, 15(13), 2898; https://doi.org/10.3390/polym15132898 - 30 Jun 2023
Cited by 4 | Viewed by 1306
Abstract
Cement-matrix composite are typical multi-scale composite materials, the failure process has the characteristics of gradual, multi-scale and multi-stage damage. In order to delay the multi-stage damage process of cement-matrix composites, the defects of different scales are suppressed by using different scales of fibres [...] Read more.
Cement-matrix composite are typical multi-scale composite materials, the failure process has the characteristics of gradual, multi-scale and multi-stage damage. In order to delay the multi-stage damage process of cement-matrix composites, the defects of different scales are suppressed by using different scales of fibres and fly ash (FA), and the overall performance of cement-matrix composites is improved, a new multi-scale fibre-reinforced cement-based composite composed of millimetre-scale polyvinyl alcohol fibre (PVA), micron-scale calcium carbonate whisker (CW), and nano-scale carbon nanotubes (CNTs) was designed in this study. The compressive strength, flexural strength, splitting tensile strength, and chloride ion permeability coefficient were used as assessment indices by the orthogonal test design. The impacts of the three fibre scales and fly ash on each individual index were examined, and the overall performance of the multi-scale fibre-reinforced cementitious materials (MSFRCC) was then optimized using grey correlation analysis. The optimized mix ratio for overall performance was PVA: 1.5%, CW: 2%, CNTs: 0.1%, FA: 40%. Compared with the optimal results for each group, the compressive strength of the final optimized MSFRCC group decreased by 8.9%, the flexural strength increased by 28.4%, the splitting tensile strength increased by 10%, and the chloride ion permeability coefficient decreased by 5.7%. The results show that the compressive performance and resistance to chloride ion penetration of the optimized group are slightly worse than those of the optimal group in the orthogonal test, but its flexural performance and splitting tensile performance are significantly improved. Full article
(This article belongs to the Special Issue Polymer Materials in Building and Construction)
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15 pages, 4201 KiB  
Article
Study of Factors Influencing Moisture Susceptibility of Warm-Mix Asphalt Using the Surface Free Energy Approach
by Liping Liu, Lingxiao Liu and Ying Yu
Polymers 2023, 15(13), 2798; https://doi.org/10.3390/polym15132798 - 23 Jun 2023
Viewed by 1460
Abstract
The application of warm-mixing technology brings considerable economical and environment benefits by decreasing the mixing temperature during warm asphalt mixture (WMA) production. However, the possible water residue also generates concerns for moisture susceptibility. For deep investigation on the influencing factors and mechanisms of [...] Read more.
The application of warm-mixing technology brings considerable economical and environment benefits by decreasing the mixing temperature during warm asphalt mixture (WMA) production. However, the possible water residue also generates concerns for moisture susceptibility. For deep investigation on the influencing factors and mechanisms of the moisture susceptibility of WMA, surface free energy (SFE) tests and laboratory tests are applied in this research. A novel indicator based on SFE, namely, effective adhesion work, is proposed to assess the asphalt–aggregate adhesion with different moisture contents. Then, given the mixing procedure of the dry-mixing method, an advanced three-phase model as a form of asphalt–aggregate-warm mixing additive is introduced, improving the conventional two-phase asphalt–aggregate model for better reflecting the separate addition of warm-mixing additives during mixing. Afterwards, the influence of aggregate type, asphalt type, aggregate moisture content, warm-mixing agent type, and the warm-mixing process on the moisture susceptibility of WMA is analyzed utilizing the models and indicators proposed. Finally, the validity of the SFE indicator is verified by comparing the calculation of effective adhesion work with freeze–thaw splitting test results. The results show that all of the above factors impact the moisture susceptibility of WMA by influencing the interfacial adhesion, with the effect of moisture content being the most significant. Meanwhile, effective adhesion work and the three-phase model brought out in this research are proven to be feasible to characterize the adhesion properties of WMA, offering theoretical support to the research on warm-mixing technology. Full article
(This article belongs to the Special Issue Polymer Materials in Building and Construction)
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25 pages, 14906 KiB  
Article
Strength of Compressed Reinforced Concrete Elements Reinforced with CFRP at Different Load Application Eccentricity
by Petr P. Polskoy, Dmitry Mailyan, Alexey N. Beskopylny, Besarion Meskhi, Aleksandr V. Shilov and Artur Umarov
Polymers 2023, 15(1), 26; https://doi.org/10.3390/polym15010026 - 21 Dec 2022
Cited by 3 | Viewed by 2365
Abstract
Currently, many studies are devoted to the use of polymer composite materials to increase the strength and stability of concrete elements. In compressed reinforced concrete elements, the bearing capacity depends on the eccentricity of the external application of the external force and the [...] Read more.
Currently, many studies are devoted to the use of polymer composite materials to increase the strength and stability of concrete elements. In compressed reinforced concrete elements, the bearing capacity depends on the eccentricity of the external application of the external force and the corresponding stress-strain state, as well as the location and number of composite materials glued to the surface of the structure. The choice of a scheme for placing composite materials depending on the stress state of the structure is an urgent scientific problem. At the same time, the issue of central compression and the compression of columns with large eccentricities has been well studied. However, studies conducted in the range of average eccentricities often have conflicting results, which is the problem area of this study. The primary aim of this study was to increase the strength and stiffness of compressed reinforced concrete elements reinforced with composite materials, as well as a comparative analysis of the bearing capacity of ten different combinations of external longitudinal, transverse, and combined reinforcement. The results of testing 16 compressed columns under the action of various eccentricities of external load application (e0/h = 0; 0.16; 0.32) are presented. It is shown that the use of composite materials in strengthening structures increases the bearing capacity up to 41%, and the stiffness of the sections increases up to 30%. Based on the results of the study, recommendations are proposed for improving the calculation method for inflexible columns reinforced in the transverse direction, which take the work of concrete under the conditions of a three-dimensional stress state into consideration. Full article
(This article belongs to the Special Issue Polymer Materials in Building and Construction)
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16 pages, 50568 KiB  
Article
Flexural Behavior of Full-Scale Damaged Hollow RC Beams Strengthened with Prestressed SCFRP Plate under Four-Point Bending
by Baojun Li, Lingkai Zeng, Xinyan Guo, Yilin Wang and Zhiheng Deng
Polymers 2022, 14(14), 2939; https://doi.org/10.3390/polym14142939 - 20 Jul 2022
Cited by 10 | Viewed by 1556
Abstract
The advantages of using prestressed carbon fiber reinforced polymer (CFRP) for strengthening and retrofitting structures have been reported in recent years. In this regard, most of the studies on prestressed CFRP technique have been carried out in the laboratory test with small-scale and [...] Read more.
The advantages of using prestressed carbon fiber reinforced polymer (CFRP) for strengthening and retrofitting structures have been reported in recent years. In this regard, most of the studies on prestressed CFRP technique have been carried out in the laboratory test with small-scale and no damage (reinforced concrete) RC beam. However, the real structures that need to be retrofitted in service are often degraded or damaged due to early cracking. This paper aims at studying the effect of prestressed CFRP method on full-scale and damaged RC beams. The damaged levels of four full-scale damaged hollow RC beams taken from an old bridge were evaluated. One damaged beam was tested to check the residual capacity, and the other three were strengthened with prestressed composite strengthened CFRP and steel-carbon fiber reinforced polymer (SCFRP). The flexural behavior of non-strengthened and prestressed strengthened beams was investigated. During the experiments, the failure modes, deflection, yield and ultimate load, strains of concrete, steel reinforcements, and SCFRP were measured and analyzed. The results showed that the stiffness at the elastic stage was increased by 64.9%, 66.9%, and 67.1% after strengthened by SCFRP with 30%, 40%, and 60% prestressing level. Moreover, the ultimate load of damaged hollow RC beams were improved by 19.53%, 21.82%, and 31.9%, respectively. The flexural behavior of the severely damaged RC beam with strength reduction coefficient of 0.65 can be recovered after being strengthened by SCFRP with 40% prestressing levels. Meanwhile, SCFRP-concrete interface debonding failure occurred when the prestressing level exceed 60%, and the characteristics of brittle failure became more evident with increased prestressing level of the SCFRP. Full article
(This article belongs to the Special Issue Polymer Materials in Building and Construction)
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12 pages, 2338 KiB  
Article
Nonlinear Rheological Processes Modeling in Three-Layer Plates with a Polyurethane Foam Core
by Anton Chepurnenko
Polymers 2022, 14(10), 2093; https://doi.org/10.3390/polym14102093 - 20 May 2022
Viewed by 1466
Abstract
Introduction: Three-layer structures with a polyurethane foam filler are widely used in construction as roofing and wall panels. The purpose of this work is to develop a method for calculating the bending of three-layer plates with a polyurethane foam filler, taking into account [...] Read more.
Introduction: Three-layer structures with a polyurethane foam filler are widely used in construction as roofing and wall panels. The purpose of this work is to develop a method for calculating the bending of three-layer plates with a polyurethane foam filler, taking into account the nonlinear creep of the middle layer. The non-linear Maxwell–Gurevich equation is used as the polyurethane foam creep law. Methods: In the article, the system of resolving the equations is obtained, and the solution is carried out numerically by the finite difference method in combination with the Euler method in a MATLAB environment. An analytical solution is also obtained for a plate hinged along the contour. Results: The developed model and calculation algorithms are verified by comparison with the calculation in the ANSYS software package. A comparison with the calculation according to the linear theory is also carried out, and the effects caused by the non-linear creep of polyurethane foam are revealed. Conclusion: It has been established that when nonlinear creep is taken into account, in contrast to the linear law, the stresses in the plate are not constant in time. In the faces, at the initial stage, the stresses increase with a subsequent return to the initial values, and in the filler, on the contrary, the stresses at the initial stage decrease. These results indicate the need to take into account the nonlinear creep of polyurethane foam in the calculation of sandwich panels. Full article
(This article belongs to the Special Issue Polymer Materials in Building and Construction)
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