Materials and Structures最新文献

An enhanced air permeability model based on stable moisture conditions for nondestructive durability assessment 基于稳定湿度条件的增强透气性模型无损耐久性评估

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-24 DOI: 10.1617/s11527-025-02679-w

May Huu Nguyen, Kenichiro Nakarai

{"title":"An enhanced air permeability model based on stable moisture conditions for nondestructive durability assessment","authors":"May Huu Nguyen, Kenichiro Nakarai","doi":"10.1617/s11527-025-02679-w","DOIUrl":"10.1617/s11527-025-02679-w","url":null,"abstract":"<div><p>Concrete carbonation resistance is essential for ensuring durability and extending the service life of concrete structures, as carbonation can lead to the degradation of reinforcing steel and compromised structural integrity. Accurately assessing carbonation resistance through in situ measurements is crucial for evaluating and mitigating potential durability risks over time. Therefore, this study proposes a simple and accurate model for the nondestructive evaluation of concrete carbonation rates under natural conditions. The Torrent air permeability method was applied to measure the changes in the air permeability coefficient, <i>kT</i>, of concrete specimens produced using various cement types, water-to-binder ratios, and initial curing times. The permeability of the concrete, when equilibrated with external environmental conditions, <i>kT</i><sub><i>e</i></sub>, was predicted based on early-age measurements of <i>kT</i> to determine the concrete carbonation rate, <i>kC</i>. The results indicated that the <i>kT</i><sub><i>e</i></sub> index achieved a mean ratio between predicted and measured <i>kC</i> values of 1.032, with a low standard deviation of 0.264 and a CoV of 25.5%, indicating high consistency and accuracy compared to conventional air permeability indices. Thus, the proposed method can be applied to effectively predict the carbonation rate under natural exposure conditions, using only early age air permeability measurements.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 5","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-025-02679-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125535","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

Investigating permanent deformation of bituminous mixtures designed using particle-packing based gradation and mastic optimization 研究基于颗粒填料级配和胶泥优化设计的沥青混合料的永久变形

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-23 DOI: 10.1617/s11527-025-02678-x

V. T. Thushara, Atanu Behera, J. Murali Krishnan

{"title":"Investigating permanent deformation of bituminous mixtures designed using particle-packing based gradation and mastic optimization","authors":"V. T. Thushara, Atanu Behera, J. Murali Krishnan","doi":"10.1617/s11527-025-02678-x","DOIUrl":"10.1617/s11527-025-02678-x","url":null,"abstract":"<div><p>Aggregate gradation plays a critical role in the performance of asphalt mixture, specifically the permanent deformation response. A rational aggregate gradation design can provide an interlocked coarse aggregate skeleton which can be effectively filled with bituminous mastic, resulting in improved resistance to permanent deformation. The objective of the study is to develop an aggregate skeleton with minimal disruptive aggregate interactions using particle-packing design approaches. Further, the influence of aggregate gradation on the permanent deformation behavior of bituminous mixtures is investigated. Six distinct gradations are formulated using three design methods: one based on conventional principles and two employing particle-packing approaches. One of the particle-packing approaches considers the geometrical interaction among the aggregate fractions implicitly by controlling size ratio, and the other one accounts for the geometric interactions explicitly through analytical formulations. In addition, the analytical formulation is used to identify the critical sieve in the gradation which contributes to mixtures’ permanent deformation. Dry rut wheel tests and repeated creep and recovery tests with a trapezoidal loading protocol are performed on all mixtures at <span>(60,^circ )</span>C to evaluate their permanent deformation behavior. A trapezoidal creep-recovery test protocol is adopted instead of the generally followed testing approach. A linear viscoelastic model is used to predict the strain response, and retardation time is computed from the linear viscoelastic model parameters. Further, retardation times are correlated to the permanent deformation characteristics of the mixtures. The study finds that mixtures with an optimized coarse aggregate structure, which can hold sufficient mastic, exhibit better resistance to permanent deformation.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 5","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125496","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

RILEM TC 275-HDB: presentation of TC 275-HDB and mechanical performances of the hemp concrete specimens of the interlaboratory comparison RILEM TC 275-HDB：介绍TC 275-HDB与麻混凝土试件力学性能的实验室间比较

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-22 DOI: 10.1617/s11527-025-02615-y

Sofiane Amziane, Evelyne Toussaint, Florence Collet

{"title":"RILEM TC 275-HDB: presentation of TC 275-HDB and mechanical performances of the hemp concrete specimens of the interlaboratory comparison","authors":"Sofiane Amziane, Evelyne Toussaint, Florence Collet","doi":"10.1617/s11527-025-02615-y","DOIUrl":"10.1617/s11527-025-02615-y","url":null,"abstract":"<div><p>This study delves into the mechanical performance of hemp concrete—a sustainable construction material—with a focus on how the orientation of the hemp shiv affects its mechanical properties. Employing uniaxial compression testing and advanced Digital Image Correlation (DIC) techniques for surface deformation analysis, the research examines specimens in which the shiv particles are aligned perpendicular and parallel to the load direction. Results indicate significant variability in mechanical behavior—perpendicular specimens demonstrate a clear stiffening phase up to 3% strain before deterioration, whereas parallel specimens lack distinct phases. Moreover, DIC measurements suggest hemp concrete has higher Young’s moduli and Poisson’s ratios compared to traditional materials, and they underline considerable strain localization, especially at aggregate boundaries in parallel specimens. The DIC analysis provides a deeper understanding of the heterogeneous strain distribution, highlighting the interfacial transition zone’s influence on the material’s mechanical characteristics. These insights are pivotal for optimizing the use of hemp concrete in sustainable building design.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 5","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108657","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

Compressive strength and isothermal calorimetry study of binary and ternary geopolymer mortars at early age 早期二元和三元地聚合物砂浆的抗压强度及等温量热研究

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-22 DOI: 10.1617/s11527-025-02681-2

Zhu Pan, Zhirui Jiang, Xiaokun Sun, Mo Zhang, Yi-Fang Cao

引用次数: 0

Creep behaviour of alkali activated slag and fly ash concrete: effects of hypothetical thickness, aggregates, and loading age 碱活化矿渣和粉煤灰混凝土的徐变行为：假设厚度、集料和加载年龄的影响

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-17 DOI: 10.1617/s11527-025-02682-1

Han Gao, Ehab Hamed, Iman Munadhil Abbas Al-Damad, Ailar Hajimohammadi, Stephen Foster

{"title":"Creep behaviour of alkali activated slag and fly ash concrete: effects of hypothetical thickness, aggregates, and loading age","authors":"Han Gao, Ehab Hamed, Iman Munadhil Abbas Al-Damad, Ailar Hajimohammadi, Stephen Foster","doi":"10.1617/s11527-025-02682-1","DOIUrl":"10.1617/s11527-025-02682-1","url":null,"abstract":"<div><p>Although alkali activated materials have been researched intensively over the last few decades, their time dependent properties such as creep and shrinkage remain less understood. This paper investigates the influence of major factors affecting the basic and total creep behaviour of Alkali Activated Slag and Fly ash concrete (AASF), focusing on loading age, sizes of exposed surface and aggregate size and content. Creep tests were performed for a period of 180 days. The variation in the mechanical properties, including the compressive strength and elastic modulus of both AASF and OPC concrete over time was also measured. The experimental results indicate that AASF concrete exhibits an upward trajectory in creep in log-time, while the rate of creep of OPC concrete with similar mix proportion diminishes in log-time, tending to a level of stability. The study also demonstrates that creep strain of AASF concrete decreases as the exposed surface area and the age of loading increase, albeit at different rates than OPC, as was demonstrated through comparison with prediction models calibrated for OPC concrete. The experimental program also includes basic and total creep testing of mortar specimens, which provides insights into the effect of aggregates. A preliminary meso-scale finite element model was used and validated against the test results to predict the creep response of AASF concrete from the mortar. Additionally, parametric studies regarding the effect of aggregate size and content were conducted. The results show that an approximately linear relationship was observed between the content of aggregate and total creep strain while aggregate size has little impact on the total creep of AASF concrete.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 5","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-025-02682-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073901","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

Recommendation of RILEM TC 274-TCE: test method to determine the apparent water vapor transfer coefficient of earthen materials RILEM TC 274-TCE的建议：测定土材料的表观水蒸气传递系数的试验方法

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-16 DOI: 10.1617/s11527-025-02651-8

Antonin Fabbri, Thibaut Colinart, Samuel Auger, Jean-Emmanuel Aubert, Paulina Faria, Anne Cécile Grillet, Céline Perlot, Fionn McGregor

引用次数: 0

Multiscale study on the deterioration of bitumen, bitumen-aggregate interface and asphalt mixture under the coupling effect of moisture and high temperature 水分和高温耦合作用下沥青、沥青-骨料界面和沥青混合料劣化的多尺度研究

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-16 DOI: 10.1617/s11527-025-02680-3

Xuemei Zhang, Lingxi Zhou, Rong Luo, Xiankun Li, Inge Hoff, Ziwei Ye

{"title":"Multiscale study on the deterioration of bitumen, bitumen-aggregate interface and asphalt mixture under the coupling effect of moisture and high temperature","authors":"Xuemei Zhang, Lingxi Zhou, Rong Luo, Xiankun Li, Inge Hoff, Ziwei Ye","doi":"10.1617/s11527-025-02680-3","DOIUrl":"10.1617/s11527-025-02680-3","url":null,"abstract":"<div><p>The combined effects of moisture and high temperatures have emerged as a globally significant challenge, leading to the progressive degradation of asphalt pavements. This study aims to comprehensively investigate the deterioration of bitumen, bitumen-aggregate interface and asphalt mixture under the coupling effect of moisture and high temperature. For this purpose, the conventional physical tests, Fourier transform infrared radiation spectrometer, peeling test, Wilhelmy Plate Test, Marshall stability test, wheel track test and universal testing machine were conducted. The results showed that temperature and moisture significantly impacted the performance characteristics of bitumen, bitumen-aggregate interface, and asphalt mixtures. Among the three components, asphalt mixtures demonstrated the highest susceptibility to coupled conditions, exhibiting up to 53% performance variation. The bitumen-aggregate interface and bitumen showed relatively lower but still notable susceptibility. A particularly significant observation was the phase separation of bitumen under coupled conditions, manifesting as precipitated spheres at the container bottom and surface-floating films, which are identified as primary contributors to the degradation of bitumen-aggregate interfaces and asphalt mixtures. The statistical analyses further confirmed that the deterioration of asphalt mixtures was primarily attributed to changes in both the bitumen and bitumen-aggregate interface. Among all examined parameters, penetration and dynamic stability exhibited the most notable changes, while maximum flexural strain correlated strongly with other parameters, making these three key indicators for evaluating pavement durability.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 5","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073805","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

Static and dynamic analysis of small walls reinforced with welded wire mesh: a numerical and experimental approach 焊接网加固小墙的静力与动力分析：数值与实验方法

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-15 DOI: 10.1617/s11527-025-02685-y

Orlando M. L. Almeida, Hidelbrando J. F. Diógenes, Joel A. Nascimento Neto, Leandro M. Trautwein

{"title":"Static and dynamic analysis of small walls reinforced with welded wire mesh: a numerical and experimental approach","authors":"Orlando M. L. Almeida, Hidelbrando J. F. Diógenes, Joel A. Nascimento Neto, Leandro M. Trautwein","doi":"10.1617/s11527-025-02685-y","DOIUrl":"10.1617/s11527-025-02685-y","url":null,"abstract":"<div><p>Structural masonry is one of humanity's oldest and most exploited structural systems. It has been used for thousands of years, with several monuments and historic buildings built in structural masonry. In recent decades, the system has gained even more relevance due to its economic competitiveness, and, in this context, the need for structural reinforcements in this system is increasingly common. Whether for the restoration of older structures or changes in the behavior of static and dynamic loads in systems, it becomes increasingly necessary to know reinforcement techniques and, therefore, the dynamic and static characteristics of structural masonry walls. This need arises from slender walls and because these structures may be subject to dynamic loads such as those caused by machinery or earthquakes, for example. Thus, this work is dedicated to studying reinforced walls and their dynamic and static properties through experimental and computational models. The study addresses variations of reinforcements with welded wire mesh, to improve the masonry's load capacity by increasing the reinforcements' adherence. The groups comprise the walls: without reinforcement, with reinforcement using four anchoring, with reinforcement using four anchoring and additive to improve adhesion, and with reinforcement and using eight anchoring. The studies demonstrated that the use of reinforcements significantly increased the rigidity of the specimens, in addition to an increase of up to 83% in compressive strength of the reinforced walls when compared to the group with no reinforcement.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949525","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

Effectiveness of FRP wrapping of heat-damaged concrete in compression for different cooling procedures 不同冷却方式下FRP包覆热损伤混凝土压缩效果的研究

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-14 DOI: 10.1617/s11527-025-02683-0

Yunus Emrahan Akbulut, Safa Nayır, Ahmet Can Altunışık, Volkan Kahya, Muhammet Oğuz Sünnetci, Hakan Ersoy

{"title":"Effectiveness of FRP wrapping of heat-damaged concrete in compression for different cooling procedures","authors":"Yunus Emrahan Akbulut, Safa Nayır, Ahmet Can Altunışık, Volkan Kahya, Muhammet Oğuz Sünnetci, Hakan Ersoy","doi":"10.1617/s11527-025-02683-0","DOIUrl":"10.1617/s11527-025-02683-0","url":null,"abstract":"<div><p>This study explores the application of FRP strengthening for enhancing the performance and resilience of fire-damaged concrete elements subject to different cooling regimes, with a focus on their effectiveness in restoring structural capacity and durability following fire exposure. To achieve this aim, 90 concrete cylinder specimens were produced and exposed to high temperatures of 200, 400, and 600 °C to induce fire damage. They were then subjected to different cooling methods, including natural cooling in the furnace, natural cooling in air, and fast cooling by water. In the last technique, the specimens were first immersed in water to shock them, and then water spraying was applied for ten minutes. Subsequently, strengthening was applied using two layers of FRP sheets, and compression tests were performed. The investigation is aimed at assessing to what extent the different cooling procedures may impair the effectiveness of FRP wrapping, with specific reference to FRP contribution to the improvement of concrete residual compressive strength. Based on the test results, and as expected, FRP strengthening was found to mitigate the adverse effects of different temperature levels and cooling regimes on the compressive strengths of specimens. Furthermore, the findings indicate that the cooling rate or process does not significantly affect residual strength and that the effectiveness of FRP wrapping should be assessed with reference not only to strength, but also to structural behavior. It is, therefore, necessary to extend the analysis to the structural context.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"58 4","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-025-02683-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949684","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

Ultrasonic testing methodology for the mechanical characterization of concrete blocks

IF 3.4 3区工程技术

Materials and Structures Pub Date : 2025-05-13 DOI: 10.1617/s11527-025-02648-3

Rafaela de Oliveira Amaral, Armando Lopes Moreno Junior, Gisleiva Cristina dos Santos Ferreira, Marinara Andrade do Nascimento Moura

引用次数: 0