Materials and Structures最新文献_第10页

Assessment of carbonation and corrosion in a 50-year-old reinforced concrete building 评估一座有 50 年历史的钢筋混凝土建筑的碳化和腐蚀情况

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-15 DOI: 10.1617/s11527-024-02487-8

Lupesh Dudi, Shashank Bishnoi

{"title":"Assessment of carbonation and corrosion in a 50-year-old reinforced concrete building","authors":"Lupesh Dudi, Shashank Bishnoi","doi":"10.1617/s11527-024-02487-8","DOIUrl":"10.1617/s11527-024-02487-8","url":null,"abstract":"<div><p>This paper presents an investigation conducted on a 50-year-old structure in a composite climactic zone of India. The study comprises two parts, one covering the comparison of long-term natural and short-term accelerated carbonation while another revealing insight into the structure’s durability and potential concerns. Mineralogy, pore solution, and transport properties comparison of natural and accelerated carbonated concrete samples highlight similar modifications, demonstrating the representative nature of accelerated carbonation at 3% carbon dioxide concentration. However, accelerated carbonation led to the preferred precipitation of calcite and a higher degree of C–S–H carbonation. Core strength and carbonation depth measurements indicate that the carbonation coefficient shows a high variation within the structure due to micro-climatic conditions, and there is a need to consider carbon dioxide concentration greater than 400 ppm for residential buildings. Additional investigations based on half-cell potential, surface resistivity, and corrosion rate measurement highlighted that moisture availability is the main deterioration-controlling factor during the propagation phase. Also, it was realized that during an inspection, if different non-destructive measurements fall in the middle range, it becomes inconclusive to ascertain the severity of corrosion. In such situations, visual inspection of the reinforcement is imperative. Finally, the authors recommend collecting data on carbon dioxide concentration and the moisture state of different locations in the structure during structural inspection.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Backcalculation of asphalt concrete Poisson’s ratio using the ultrasonic pulse velocity test 利用超声波脉冲速度测试反算沥青混凝土泊松比

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-13 DOI: 10.1617/s11527-024-02486-9

Yujia Lu, Renan Santos Maia, Ramez M. Hajj

{"title":"Backcalculation of asphalt concrete Poisson’s ratio using the ultrasonic pulse velocity test","authors":"Yujia Lu, Renan Santos Maia, Ramez M. Hajj","doi":"10.1617/s11527-024-02486-9","DOIUrl":"10.1617/s11527-024-02486-9","url":null,"abstract":"<div><p>For asphalt mixtures, it is widely known that Poisson’s Ratio (PR) varies according to several parameters, and it is a temperature and loading frequency-dependent property. However, measuring PR at different temperatures and frequencies during mechanical tests is not commonly done. For that, a complex arrangement of fixtures and instruments would be necessary, and still likely not compatible with typical cylindrical specimens. This work aimed to combine the simple and practical Ultrasonic Pulse Velocity (UPV) test with the conventional Dynamic Modulus (<span>(|E^*|)</span>) test used for determining pavement design inputs related to asphalt mixtures. To do this, four typical lower binder asphalt concrete mixes were selected, having different levels of Asphalt Binder Replacement (ABR), given the presence of RAP/RAS, and covering seven different asphalt binders in terms of Performance Grade (PG). Additionally, a baseline mixture with no recycled material was used for comparison. Results show that estimating <span>(|E^*|)</span> via UPV assuming a typical PR value may be inaccurate. Once reference experimental modulus values were available, PR was backcalculated using the UPV theory, showing that this property increases as temperature increases, while it decreases as ABR and air voids increases. This indicates that PR can be a source of significant variability when it comes to the use of recycled materials. Therefore, UPV emerges as a low-cost, practical, and reasonably accurate piece of equipment (compared to state-of-practice assumptions) with potential to be integrated with traditional <span>(|E^*|)</span> testing for an assessment of PR sensitivity according to different mixes’ properties.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight on physical–mechanical properties of one-part alkali-activated materials based on volcanic deposits of Mt. Etna (Italy) and their durability against ageing tests 洞察基于埃特纳火山（意大利）火山沉积物的单组分碱活性材料的物理机械特性及其耐老化测试的耐久性能

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02471-2

Claudio Finocchiaro, Germana Barone, Paolo Mazzoleni, Giuseppe Cultrone

{"title":"Insight on physical–mechanical properties of one-part alkali-activated materials based on volcanic deposits of Mt. Etna (Italy) and their durability against ageing tests","authors":"Claudio Finocchiaro, Germana Barone, Paolo Mazzoleni, Giuseppe Cultrone","doi":"10.1617/s11527-024-02471-2","DOIUrl":"10.1617/s11527-024-02471-2","url":null,"abstract":"<div><p>In recent years, there has been a growing interest in one-part alkali-activated materials, which utilize solid-form alkali activators, within the construction industry. This approach is becoming popular due to its simpler and safer application for cast-in-situ purposes, as compared to the conventional two-part method. At this purpose, we have pioneered the use of volcanic deposits of Mt. Etna volcano (Italy) as precursor for the synthesis of a unique one-part formulation. This was done to assess its performance against both traditional and two-part alkali-activated materials. The study employed a comprehensive range of investigative techniques including X-ray powder diffraction, Fourier transform infrared spectroscopy, hydric tests, mercury intrusion porosimetry, ultrasound, infrared thermography, spectrophotometry, contact angle measurements, uniaxial compressive strength tests, as well as durability tests by salt crystallization and freeze–thaw cycles. The key findings on the studied samples are as follows: i) small size of pores and slow absorption-drying cycles; ii) satisfying compactness and uniaxial compressive strengths for building and restoration interventions; iii) high hydrophily of the surfaces; iv) lower heating dispersion than traditional materials; v) significant damage at the end of the salt crystallization test; vi) excellent resistance to freeze–thaw cycles. These newly developed materials hold promises as environmentally friendly options for construction applications. They offer a simplified mixing process in contrast to the conventional two-part alkali-activated materials, thus providing an added advantage to this class of materials.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-024-02471-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coupling performance of the interface between sensor and concrete by the double shear method 用双剪切法测量传感器与混凝土界面的耦合性能

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02481-0

Chuankun Liu, Ya Wei

{"title":"Coupling performance of the interface between sensor and concrete by the double shear method","authors":"Chuankun Liu, Ya Wei","doi":"10.1617/s11527-024-02481-0","DOIUrl":"10.1617/s11527-024-02481-0","url":null,"abstract":"<div><p>The rupture of sensor packaging shells and debonding at the interface between the embedded sensors and the surrounding concrete are considered as the primary causes of signal interruption in the structural health monitoring of infrastructure. Ensuring the coupling performance between the embedded sensor and the surrounding concrete is crucial for the long-term structural health monitoring. To investigate the coupling performance of the interface between the sensor and the surrounding concrete, a new interface double shear test device is designed and manufactured. Factors considered in the study include the sensor packaging materials (304 stainless steel, glass fiber reinforced nylon), whether the interface is coated with epoxy adhesive sand or not, the coating density of epoxy adhesive sand, and the water-to-cement ratio of the matrix concrete (<i>w</i>/<i>c</i> ratio = 0.3, 0.4, 0.5). The load-slip curves, interfacial shear strength, and slip value at the peak load are systematically analyzed. A comparative analysis of the failure modes and failure morphology of specimens is also conducted. The shear bonding mechanism between the sensor and the matrix concrete is revealed, and an interfacial coupling model is established. The research findings can provide reference and guidance for optimizing the design of embedded sensor packaging, improving packaging processes, and enhancing interface coupling, thus achieving the long-term accurate monitoring of infrastructure.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement and characterization of asphalt fatigue behavior under multi-factor effects 测量和描述多因素影响下的沥青疲劳行为

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02473-0

Chunmeng Zheng, Peifeng Cheng, Yiming Li, Qichao Gao, Kai Huang, Dezhong Yu, Yongcheng Ji

{"title":"Measurement and characterization of asphalt fatigue behavior under multi-factor effects","authors":"Chunmeng Zheng, Peifeng Cheng, Yiming Li, Qichao Gao, Kai Huang, Dezhong Yu, Yongcheng Ji","doi":"10.1617/s11527-024-02473-0","DOIUrl":"10.1617/s11527-024-02473-0","url":null,"abstract":"<div><p>Throughout the service life, multiple factors influence the fatigue properties of asphalt binders, including the modifier type, aging, freeze–thaw cycles, and ambient temperature. However, there is a significant dearth of studies targeting the collective impact of multiple factors on fatigue characteristics, and the extent to which each factor contributes has not been adequately quantified. To investigate the effects of variables and quantify the extent to which each factor contributes, the linear amplitude sweep test (LAS) was conducted to explore the effects of several factors on asphalt fatigue performance. Pearson correlation analysis and multi-factor analysis of variance were employed to study the extent and law of these effects. Results indicated that each factor exerts an influence on asphalt fatigue properties. Among them, the temperature exhibited the most pronounced effect on fatigue characteristics, followed closely by the modifier type and freeze–thaw cycles. The correlations between the criteria assessed through the LAS test and environmental factors exhibit variations. A noteworthy correlation was observed between fatigue life and both the modifier type and freeze–thaw cycles, analogous to the peak phase angle and aging, as well as the relationship between yield stress and temperature. It’s highly recommended to use appropriate evaluation criteria to assess the asphalt fatigue characteristics under varying conditions. The most substantial impact on fatigue characteristics was observed when subjected to 25 °C and 50 freeze–thaw cycles, as compared to other conditions. The method enables a comprehensive investigation of how temperature and freeze–thaw cycles affect the properties of asphalt fatigue characteristics. The findings will serve as valuable references for material selection and the assessment of long-life asphalt pavement.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents 使用不同研磨剂增强合成的 C4A0.81F1.19 的水化反应

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02476-x

Hyunuk Kang, Yangwoo Lee, Sungjin Jung, Juhyuk Moon

{"title":"Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents","authors":"Hyunuk Kang, Yangwoo Lee, Sungjin Jung, Juhyuk Moon","doi":"10.1617/s11527-024-02476-x","DOIUrl":"10.1617/s11527-024-02476-x","url":null,"abstract":"<div><p>Tetracalcium aluminoferrite (C<sub>4</sub>AF) presents in ordinary Portland cement (OPC) as a solid solution phase, as C<sub>4</sub>A<sub><i>x</i></sub>F<sub>2−<i>x</i></sub> (0.7 ≤ <i>x</i> ≤ 1.1). There is a limited understanding of the hydration reactions of C<sub>4</sub>AF, particularly regarding the influence of alkanolamines (AA) on C<sub>4</sub>AF, which can substantially alter OPC hydration. In this study, synthesized C<sub>4</sub>A<sub>0.81</sub>F<sub>1.19</sub> was subjected to grinding, using three different AA (triisopropanolamine, ethanol diisopropanolamine, and diethanol isopropanolamine) at dosages of 0, 0.1, and 0.3%. It was experimentally confirmed that the crystal structure of unhydrated C<sub>4</sub>AF was partially changed during the grinding process, and the hydration properties of C<sub>4</sub>AF were modified. From these results, the compressive strength improved significantly, and the rate of strength enhancement was the highest with 0.1% of diethanol isopropanolamine. More specifically, it was revealed that both Fe and Al sources were proficiently activated, leading to the production of Al/Fe-containing AFm phases and efficiently enhanced mechanical properties.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-024-02476-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 10-year study of the corrosion resistance of stainless steels used as reinforcement in chloride-contaminated concrete exposed to severe conditions 对暴露在严酷条件下受氯化物污染的混凝土中用作钢筋的不锈钢的耐腐蚀性进行为期 10 年的研究

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02468-x

Véronique Bouteiller, Thierry Chaussadent, Eric Chauveau, Amandine Bonnet, Philippe Mauger, Victor Da-Silva

{"title":"A 10-year study of the corrosion resistance of stainless steels used as reinforcement in chloride-contaminated concrete exposed to severe conditions","authors":"Véronique Bouteiller, Thierry Chaussadent, Eric Chauveau, Amandine Bonnet, Philippe Mauger, Victor Da-Silva","doi":"10.1617/s11527-024-02468-x","DOIUrl":"10.1617/s11527-024-02468-x","url":null,"abstract":"<div><p>The corrosion of carbon steel reinforcements is the main cause of deterioration in reinforced concrete structures. Stainless steel can be a solution to increase the service life of structures exposed to severe chloride environments. This paper describes the results obtained in an experimental study seeking to monitor corrosion over a long-term period (10 years) without the use of accelerated tests. Concrete samples containing admixed chloride and reinforced with 5 different steel grades were exposed to high temperature and high relative humidity in a climatic chamber for 10 years. Visual inspection, corrosion potential, linear polarisation resistance and electrochemical impedance spectroscopy measurements were carried out throughout this period. Corrosion current density was calculated to monitor the evolution of corrosion. The methodology was validated on a martensitic stainless steel (grade 1.4021) with the original finding that corrosion occurs over three time steps. None of the duplex steels (grades 1.4062, 1.4362 and 1.4462) showed corrosion after 10 years, making them a very interesting solution for structures located in severe chloride environments. Mass loss corrosion laws over time were determined. Prediction of corrosion was discussed.Please check and confirm the edit made in the article title.confirmedKindly check and confirm the organization name for affiliations 1 and 2.affiliation 1: OK\u0000affiliation 2: OK</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Manufacturing and mechanical performance of lightened gypsum reinforced by hemp/epoxy composites 麻/环氧复合材料增强的轻质石膏的制造和机械性能

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02472-1

Luca Boccarusso, Ilaria Capasso, Dario De Fazio, Massimo Durante, Fabio Iucolano, Antonio Langella

{"title":"Manufacturing and mechanical performance of lightened gypsum reinforced by hemp/epoxy composites","authors":"Luca Boccarusso, Ilaria Capasso, Dario De Fazio, Massimo Durante, Fabio Iucolano, Antonio Langella","doi":"10.1617/s11527-024-02472-1","DOIUrl":"10.1617/s11527-024-02472-1","url":null,"abstract":"<div><p>In recent years, the construction industry has increasingly focused on reducing its environmental impact, addressing research efforts towards innovative materials and technological solutions. In this context, gypsum-based materials and natural fibers represent some of the most promising alternatives in terms of sustainability. This paper aims to propose a new gypsum structure reinforced with a composite hemp fabric impregnated with epoxy resin, investigating its manufacturing process and the mechanical properties, specifically in terms of flexural, impact and bearing strength. To achieve lightweight structures, lightened gypsum was also considered in addition to conventional gypsum. Both the lightened gypsum matrix and the hemp/epoxy reinforcement were produced using specific techniques able to obtain lightweight gypsum composites. Beneficial effects in the use of lightened gypsum matrix were found indeed, the reinforced lightweight samples exhibited higher values of flexural strength coupled with a density reduction of about 18%. Additionally, a significant change in post-cracking behavior was observed, with a gradual failure rather than a brittle one<i>.</i> The same trend was observed for the impact, while for bearing strength, the presence of porosity affected negatively the resistance of the composites, prevailing over the benefits of density reduction. Experimental results demonstrated the presence of a good interaction between the hemp fabric and the gypsum matrix, which was further confirmed by the microstructure analysis. The interesting mechanical properties showed by these lightweight gypsum/hemp composites, suggested their possible use for different and unconventional applications of gypsum-based walls and components.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-024-02472-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Limestone impact on properties, microstructure and CO2 emissions of waste glass-activated blast furnace slag cements 石灰石对废玻璃活性高炉矿渣水泥的性能、微观结构和二氧化碳排放的影响

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02469-w

R. I. Aragón-Gijón, J. Rodríguez-Morales, J. A. Díaz-Guillén, J. I. Escalante-García, O. Burciaga-Díaz

{"title":"Limestone impact on properties, microstructure and CO2 emissions of waste glass-activated blast furnace slag cements","authors":"R. I. Aragón-Gijón, J. Rodríguez-Morales, J. A. Díaz-Guillén, J. I. Escalante-García, O. Burciaga-Díaz","doi":"10.1617/s11527-024-02469-w","DOIUrl":"10.1617/s11527-024-02469-w","url":null,"abstract":"<div><p>Utilizing industrial and urban solid wastes is crucial for developing low-carbon cements. This study proposes a novel method to integrate recycled glass and blast furnace slag (BFS) into alkali-activated cements. It also investigates the influence of pulverized limestone (LSP), as a readily available cost-efficient partial replacement for BFS. The activators were alternative solid sodium silicates (SSWG), prepared by thermochemical treatment of soda lime silica waste glass in NaOH solutions. SSWG had moduli (Ms) SiO<sub>2</sub>/Na<sub>2</sub>O = 1 and 1.5 and were added at 6 and 8%wt. Na<sub>2</sub>O relative to the mass of BFS + LSP. After 3 years, pastes of 100% BFS at 20 °C yielded the highest compressive strength of 78 MPa, while incorporating 50–75% LSP resulted in 61–42 MPa, depending on the Ms and %Na<sub>2</sub>O. Microstructural analysis via XRD, thermal analysis, SEM, and <sup>27</sup>Al and <sup>29</sup>Si NMR, indicated the formation of cementitious products like C–S–H, C–(A)–S–H, hydrotalcite, natron, gaylussite and pyrssonite. LSP increased the chain length in C–(A)–S–H-type products and affected the Al uptake by a seeding effect. The eco-efficiency analysis showed that the studied cements emit 45–74% less kgCO<sub>2</sub>.eq per ton than Portland cement.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the seismic performance of damaged confined brick masonry walls reinforced with FRCM 用 FRCM 加固的受损密闭砖砌体墙抗震性能研究

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2024-10-10 DOI: 10.1617/s11527-024-02474-z

Fenghao Qu, Shiping Yin, Fei Wang, Boxue Wang

{"title":"Study of the seismic performance of damaged confined brick masonry walls reinforced with FRCM","authors":"Fenghao Qu, Shiping Yin, Fei Wang, Boxue Wang","doi":"10.1617/s11527-024-02474-z","DOIUrl":"10.1617/s11527-024-02474-z","url":null,"abstract":"<div><p>Masonry walls, the main load-bearing elements, are susceptible to shear damage due to seismic action. Currently, most masonry structures have various degrees of damage and must be strengthened in a timely manner to enhance their performance during earthquakes. This study presents pseudostatic test results for the use of FRCMs to strengthen damaged confined brick masonry walls. Tests were conducted on five walls, and performance indicators were compared for one unreinforced masonry wall and four masonry walls that were damaged and reinforced with various retrofit measures. Reinforcement by FRCM improved the integrity and increased the deformation of damaged walls. The study also examined the damage mechanism, hysteresis characteristics, deformation capacity, and energy dissipation. This study demonstrated the value of using FRCMs to repair damaged masonry walls to improve their seismic performance. The skeletal curves of the walls reinforced on both sides exhibited better postpeak behavior, and the seismic performance indices of the damaged walls strengthened by FRCM were better than those of the unreinforced wall. In accordance with the results of these experiments and previous studies by other scholars, the damage severity and limit state of the FRCM-strengthened walls were determined on the basis of displacement drift. Furthermore, the calculated shear capacities of the FRCM-reinforced walls agreed well with the experimental values.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"57 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0