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Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition

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

Deadline for manuscript submissions: 20 February 2025 | Viewed by 5747

Special Issue Editors

Dr. Xiaoqing Xu

E-Mail Website
Guest Editor
Department of Civil Engineering, Tongji University, Shanghai 200092, China
Interests: steel and concrete composite structures; concrete; fiber-reinforced concrete; steel; corrosion; fatigue; bridge engineering; numerical modeling
Special Issues, Collections and Topics in MDPI journals
Dr. Fengjiang Qin

E-Mail Website
Guest Editor
School of Civil Engineering, Chongqing University, Chongqing 400044, China
Interests: steel and concrete composite structures; engineered cementitious composites (ECC) ; ultra-high performance concrete (UHPC); high strength steel structures; bridge strengthening
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Construction materials play a critical role in building modern infrastructures, representing an enormous investment in raw materials, energy, and capital, with the result being significant environmental burdens and social costs. In recent decades, novel advanced construction materials and their structural applications have emerged with the support of continuously developing innovative technologies. To achieve higher-performing construction materials and advanced construction technologies, further research has drawn great attention from researchers and the interest of technicians.

After the success of the Special Issue of Materials on “Experimental Study, Numerical Simulation & Structural Applications of Construction Materials”, we are delighted to open this second edition.

This Special Issue of Materials invites original research articles and comprehensive reviews regarding experimental studies, numerical simulations, and structural applications of construction materials.

Dr. Xiaoqing Xu
Dr. Fengjiang Qin
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

  • mechanical properties
  • structural performance
  • high performance
  • reinforced concrete
  • structural steel
  • fiber-reinforced polymer
  • numerical modelling
  • repair and strengthening of structures

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Related Special Issue

Published Papers (7 papers)

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Research

23 pages, 36687 KiB  
Article
The Effects of Waterborne Polyurethane-Modified Cement on the Mechanical Characterization of Grouting Concretion Stone
by Jingyu Zhang, Sili Chen, Xinchao Duan, Jinzhu Meng and Junxiang Wang
Materials 2024, 17(23), 5720; https://doi.org/10.3390/ma17235720 - 22 Nov 2024
Viewed by 318
Abstract
To improve the safety and stability of tunnel structures, developing grouting materials suitable for cold regions with excellent performance is crucial. Herein, waterborne polyurethane (WPU) was used to modify cement grouting materials. Through orthogonal testing analysis, the optimal mixing ratio of the modified [...] Read more.
To improve the safety and stability of tunnel structures, developing grouting materials suitable for cold regions with excellent performance is crucial. Herein, waterborne polyurethane (WPU) was used to modify cement grouting materials. Through orthogonal testing analysis, the optimal mixing ratio of the modified cement grouting materials was determined to be as follows: a water–cement ratio of 0.5, hydroxypropyl methyl cellulose (HPMC) content of 0.05%, WPU content of 5%, water-reducing agent (WRA) content of 0.2%. Furthermore, the dynamic mechanical properties of grouting concretion stones were studied. The influence of various external parameters on the compressive strength of the grouting concretion stones cured for different ages was evaluated. The influence degree of stone particle size on the dynamic compressive strength of the grouting stone body was d5–10 mm > d5–20 mm > d5–30 mm. The split Hopkinson pressure bar experiment was performed to show that for the same strain rate, the absorbed energy and energy utilization rate first increase and then decrease with increasing stone particle size. When the stone particle size was 5–20 mm, the absorption energy and energy utilization rate of the grouting stone body were the highest. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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20 pages, 4721 KiB  
Article
Study on the Effect of Hot and Humid Environmental Factors on the Mechanical Properties of Asphalt Concrete
by Xin Yan, Zhigang Zhou, Yingjia Fang, Chongsen Ma and Guangtao Yu
Materials 2024, 17(20), 4942; https://doi.org/10.3390/ma17204942 - 10 Oct 2024
Viewed by 501
Abstract
To investigate the effect of hot and humid environmental factors on the mechanical properties of asphalt mixtures research, in this paper, the dynamic modulus of asphalt mixtures under the effects of aging, dry–wet cycling, and coupled effects of aging and dry–wet cycling were [...] Read more.
To investigate the effect of hot and humid environmental factors on the mechanical properties of asphalt mixtures research, in this paper, the dynamic modulus of asphalt mixtures under the effects of aging, dry–wet cycling, and coupled effects of aging and dry–wet cycling were measured by the simple performance tester (SPT) system, and the dynamic modulus principal curves were fitted based on the sigmoidal function. The results show that under the aging effect, the dynamic modulus of asphalt mixture increases with the aging degree; the dynamic modulus of short-term aged, medium-term aged, long-term aged, and ultra-long-term aged asphalt mixtures increased by 9.3%, 26.4%, 44.8%, and 57%, respectively, compared to unaged asphalt mixtures at 20 °C and 10 Hz; the high-temperature stability performance is enhanced, and the low temperature cracking resistance performance is enhanced; under the dry–wet cycle, the aging effect of asphalt water is more obvious in the early stage, and dynamic modulus of resilience of the mixture is slightly increased. In the long-term wet–dry cycle process, water on the asphalt and aggregate erosion increased, the structural bearing capacity attenuation, and the dynamic modulus of rebound greatly reduced at 20 °C and 10 Hz. For example, the dynamic modulus of asphalt mixtures with seven wet and dry cycles increased by 3% compared to asphalt mixtures without wet and dry cycles, and the dynamic modulus of asphalt mixtures with 14 cycles of wet and dry cycles and 21 cycles of wet and dry cycles decreased by 10.8% and 16.5%, respectively, compared to asphalt mixtures without wet and dry cycles. The main curve as a whole shifted downward; the high-temperature performance decreased significantly; in the aging wet–dry cycle coupling, the aging asphalt mixture is more susceptible to water erosion, and the first wet–dry cycle after the mix by the degree of water erosion is relatively small, along with the dynamic modulus of rebound. The dynamic modulus of resilience is relatively larger, and the high-temperature performance is relatively better, while the low-temperature performance is worse. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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19 pages, 6183 KiB  
Article
Effect of Moisture on the Fatigue and Self-Healing Properties of SiO2/SBS Composite Modified Asphalt
by Juzhong Wang, Shangjun Yu, Yihan Wang, Linhao Sun, Ruixia Li and Jinchao Yue
Materials 2024, 17(18), 4526; https://doi.org/10.3390/ma17184526 - 14 Sep 2024
Viewed by 730
Abstract
Moisture accelerates the degradation of asphalt properties, significantly impacting the service life of roads. Therefore, this study uses simplified viscoelastic continuous damage theory and employs frequency scanning, linear amplitude scanning, and fatigue–healing–fatigue tests with a dynamic shear rheometer. The objective is to investigate [...] Read more.
Moisture accelerates the degradation of asphalt properties, significantly impacting the service life of roads. Therefore, this study uses simplified viscoelastic continuous damage theory and employs frequency scanning, linear amplitude scanning, and fatigue–healing–fatigue tests with a dynamic shear rheometer. The objective is to investigate the effects of aging time, moisture conditions, and aging temperature on the fatigue and self-healing performance of SBS (Styrene–Butadiene–Styrene block copolymer)-modified asphalt, nano-SiO2-modified asphalt, and nano-SiO2/SBS composite modified asphalt in a moisture-rich environment. The results indicate that nano-SiO2 powder enhances the low-temperature performance of modified asphalt, whereas the SBS modifier reduces temperature sensitivity and increases the recovery percentage after deformation. Compared to SBS-modified asphalt, the deformation resistance of nano-SiO2/SBS composite modified asphalt has increased by about 30%, while nano-SiO2-modified asphalt shows relatively poor deformation resistance. The fatigue performance of SBS-modified asphalt deteriorates under moisture, whereas the addition of nano-SiO2 powder improves its fatigue life. Nano-SiO2/SBS composite modified asphalt exhibits strong self-healing capabilities. Although self-healing can enhance the fatigue life of modified asphalt, moisture inhibits this improvement after self-healing. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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14 pages, 5048 KiB  
Article
Experimental Study on the Crack Concrete Repaired via Enzyme-Induced Calcium Carbonate Precipitation (EICP)
by Gang Li, Deqiang Yan, Jia Liu, Peidong Yang and Jinli Zhang
Materials 2024, 17(13), 3205; https://doi.org/10.3390/ma17133205 - 1 Jul 2024
Cited by 1 | Viewed by 1053
Abstract
A low-carbon and environmentally friendly EICP method for repairing concrete cracks is presented to prolong the service life of concrete. In this study, we took concrete as the research object and quartz sand as the filling medium and employed the EICP injection method [...] Read more.
A low-carbon and environmentally friendly EICP method for repairing concrete cracks is presented to prolong the service life of concrete. In this study, we took concrete as the research object and quartz sand as the filling medium and employed the EICP injection method to repair concrete cracks. The internal repair effect of EICP on concrete cracks was evaluated with a combination of ultrasonic and compressive strength tests. The concrete repair mechanism of EICP was identified with a combination of EDS, XRD, and SEM tests. The results indicate that with an increase in the fracture depth, the ultrasonic sound time of the crack specimen increased gradually, and the ultrasonic wave transit time value of the crack specimen decreased significantly after EICP repair. After repair, the compressive strength rose. The highest compressive-strength recovery rate of a 0.3 mm wide specimen is 98.41%. The calcium carbonate crystal formed using EICP is vaterite. The probability density function model of the Laplace distribution was constructed, which showed good applicability and consistency in the ultrasonic sound time and compressive strength measured via experiments. The formed calcium carbonate crystals can be tightly and evenly attached to the cracks with the EICP injection repair method, resulting in a better repair effect. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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15 pages, 9928 KiB  
Article
Study on the Mechanical Properties of Crack Mortar Repaired by Enzyme-Induced Calcium Carbonate Precipitation (EICP)
by Gang Li, Deqiang Yan, Jia Liu, Peidong Yang and Jinli Zhang
Materials 2024, 17(12), 2978; https://doi.org/10.3390/ma17122978 - 18 Jun 2024
Cited by 1 | Viewed by 746
Abstract
As an emerging repair method, the enzyme-induced calcium carbonate precipitation (EICP) technique has the advantages of being highly economical, eco-friendly, and durable. The optimal repair conditions were obtained by taking cement mortar as the research object, adding two types of filling medium, using [...] Read more.
As an emerging repair method, the enzyme-induced calcium carbonate precipitation (EICP) technique has the advantages of being highly economical, eco-friendly, and durable. The optimal repair conditions were obtained by taking cement mortar as the research object, adding two types of filling medium, using three EICP-based repair methods to repair the cement mortar with different crack widths, and combining ultrasonic testing and strength testing to evaluate the mechanical properties and repair effects of the repair mortar. The microscopic structure of the mortar was established using mesoscopic and microscopic tests (XRD, SEM, and EDS), thereby revealing the mechanism of repair based on EICP. The test results show that, when quartz sand is used as the repair medium, more calcium carbonate adheres to the cross-section of test samples, and it has a better repair effect. Moreover, the repair effect of the injection method is significantly higher than those of the perfusion and immersion methods, and the ultrasonic wave transit time decreases by 1.22% on average. Based on the combination of quartz sand and EICP repair methods, the calcium carbonate precipitated among the sand granules contributes to a binding effect that strengthens the cohesive force among the sand granules. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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16 pages, 9379 KiB  
Article
Steel Slag Accelerated Carbonation Curing for High-Carbonation Precast Concrete Development
by Weilong Li, Hui Wang, Zhichao Liu, Ning Li, Shaowei Zhao and Shuguang Hu
Materials 2024, 17(12), 2968; https://doi.org/10.3390/ma17122968 - 17 Jun 2024
Cited by 1 | Viewed by 728
Abstract
Steel slag as an alkaline industrial solid waste, possesses the inherent capacity to engage in carbonation reactions with carbon dioxide (CO2). Capitalizing on this property, the current research undertakes a systematic investigation into the fabrication of high-carbonation precast concrete (HCPC). This [...] Read more.
Steel slag as an alkaline industrial solid waste, possesses the inherent capacity to engage in carbonation reactions with carbon dioxide (CO2). Capitalizing on this property, the current research undertakes a systematic investigation into the fabrication of high-carbonation precast concrete (HCPC). This is achieved by substituting a portion of the cementitious materials with steel slag during the carbonation curing process. The study examines the influence of varying water–binder ratios, silica fume dosages, steel slag dosages, and sand content on the compressive strength of HCPC. Findings indicate that adjusting the water–binder ratio to 0.18, adding 8% silica fume, and a sand volume ratio of 40% can significantly enhance the compressive strength of HCPC, which can reach up to 104.9 MPa. Additionally, the robust frost resistance of HCPC is substantiated by appearance damage analysis, mass loss rate, and compressive strength loss rate, after 50 freeze–thaw cycles the mass loss, and the compressive strength loss rate can meet the specification requirements. The study also corroborates the high-temperature stability of HCPC. This study optimized the preparation of HCPC and provided a feasibility for its application in precast concrete. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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18 pages, 11155 KiB  
Article
Experimental and Numerical Study of Membrane Residual Stress in Q690 High-Strength Steel Welded Box Section Compressed Member
by Jie Wang, Aimin Xu, Jin Di, Fengjiang Qin and Pengfei Men
Materials 2024, 17(10), 2296; https://doi.org/10.3390/ma17102296 - 13 May 2024
Viewed by 926
Abstract
High-strength steel (HSS) members with welded sections exhibit a notably lower residual compressive stress ratio compared with common mild steel (CMS) members. Despite this difference, current codes often generalize the findings from CMS members to HSS members, and the previous unified residual stress [...] Read more.
High-strength steel (HSS) members with welded sections exhibit a notably lower residual compressive stress ratio compared with common mild steel (CMS) members. Despite this difference, current codes often generalize the findings from CMS members to HSS members, and the previous unified residual stress models are generally conservative. This study focuses on the membrane residual stress distribution in Q690 steel welded box sections. By leveraging experimental results, the influence of section sizes and welding parameters on membrane residual stress was delved into. A larger plate size correlates with a decrease in the residual compressive stress across the section, with a more pronounced reduction observed in adjacent plates. Additionally, augmenting the number of welding passes tends to diminish residual stresses across the section. Results showed that membrane residual stress adhered to the section’s self-equilibrium, while the self-equilibrium in the plates was not a uniform pattern. A reliable residual stress simulation method for Q690 steel welded box sections was established using a three-dimensional thermal–elastic–plastic finite element model (3DTEFEM) grounded in experimental data. This method served as the cornerstone for parameter analysis in this study and set the stage for subsequent research. As a result, an accurate unified residual stress model for Q690 steel welded box sections was derived. Full article
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials—2nd Edition)
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