Construction and Building Materials最新文献

{"title":"Bond behavior evaluation of FRP rods fabricated by 3D printing","authors":"Mayu Kawakami ,&nbsp;Ayumu Yasue ,&nbsp;Kensuke Kobayashi ,&nbsp;Junho Kim ,&nbsp;Yuhei Nishio ,&nbsp;Yuji Miyazu ,&nbsp;Tomohisa Mukai ,&nbsp;Manabu Kanematsu","doi":"10.1016/j.conbuildmat.2025.141201","DOIUrl":"10.1016/j.conbuildmat.2025.141201","url":null,"abstract":"<div><div>Reinforced concrete (RC) structures are composite constructions in which steel reinforcement and concrete mutually transfer forces to withstand loads. With the proposal of new materials and construction methods, it is anticipated that future reinforcement methods and the shapes of reinforcements in composite structures will become more complex compared to conventional RC structures. Notably, the shape of reinforcements significantly influences their bond behavior with concrete, necessitating an understanding of how freely shaped reinforcements affect bond behavior. In recent years, industrial 3D printing (3DP) has garnered attention as a growing field, particularly plastic-based 3DP technologies, such as fiber-reinforced plastics (FRP). These are expected to serve as powerful tools for elucidating the relationship between the shape of reinforcements and their bond performance. However, when using FRP rods fabricated through 3DP (3DP FRP) for bond tests with concrete, fundamental studies, including the feasibility of such tests, are required. This study first examined the feasibility of evaluating bond behavior using Carbon Fiber Reinforced Plastics(CFRP) rods fabricated through plastic-based 3DP. Based on the results, the study further investigated how changes in shape—such as increased surface area, waviness, twisting, mechanical anchorages, and their combinations—affect bond behavior. The experimental results revealed that the bond behavior of CFRP rods can be evaluated through pull-out tests when carbon fibers are incorporated into the FRP rods. Additionally, it was found that the effects of shape changes, including increased surface area, waviness, twisting, and mechanical anchorages, as well as their combinations, on bond behavior can be qualitatively evaluated.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"481 ","pages":"Article 141201"},"PeriodicalIF":7.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the mechanical properties of cementitious materials affected by the interactions between crystal and gel products driven by crystallization pressure","authors":"Depeng Zhang ,&nbsp;Zhenyu Pi ,&nbsp;Hui Li ,&nbsp;Mingfeng Xu ,&nbsp;Jian Zhou ,&nbsp;Guang Ye ,&nbsp;Mingzhong Zhang","doi":"10.1016/j.conbuildmat.2025.141547","DOIUrl":"10.1016/j.conbuildmat.2025.141547","url":null,"abstract":"<div><div>Existing research on the mechanisms affecting the strength of cementitious materials primarily focuses on the composition and properties of cement hydration products, often overlooking the interactions between different products. This study presents a systematic experimental and theoretical investigation into the mechanical properties of cementitious materials, emphasizing the interactions between crystal and gel products driven by crystallization pressure. A new mechanism based on crystallization pressure is proposed to explain the impact of the interactions between hydration products on the strengths of cementitious materials. Experiments were conducted by immersing specimens in solutions with tailored ion concentrations (including water, isopropyl alcohol, ethanol, and solutions of calcium hydroxide and calcium acetate) to vary the crystallization pressure. The flexural and compressive strengths of these specimens were then tested. An analytical model was developed and validated against the experimental data. Both experimental and calculated results demonstrate a negative correlation between crystallization pressure and strength. Specimens subjected to crystallization pressures of 101.7 MPa and 147.8 MPa showed reductions in flexural strength of 19.34 % and 30.65 %, respectively, and decreases in compressive strength of 10.00 % and 14.41 %, compared to control specimens with zero crystallization pressure. These results suggest that ion concentrations in the pore solution alter the crystallization pressure, which in turn affects the interactions between crystal and gel products and strength of cementitious materials. This study provides insights into the mechanisms of strength degradation due to moisture in porous materials.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"481 ","pages":"Article 141547"},"PeriodicalIF":7.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable lime-based nano-reinforced pastes for structural health monitoring of the restoration areas of Monuments of Cultural Heritage","authors":"Vasileios Zeimpekis ,&nbsp;Anastasios Gialos ,&nbsp;Angeliki Eirini Dimou ,&nbsp;Christina M. Charalampidou ,&nbsp;Georgios Asimakopoulos ,&nbsp;Ioannis Karatasios ,&nbsp;Dimitrios Gournis ,&nbsp;Michael A. Karakassides ,&nbsp;Zoi S. Metaxa ,&nbsp;Stavros K. Kourkoulis ,&nbsp;Nikolaos D. Alexopoulos","doi":"10.1016/j.conbuildmat.2025.141456","DOIUrl":"10.1016/j.conbuildmat.2025.141456","url":null,"abstract":"<div><div>The aim of the present article is to investigate the sustainability of the production of different carbon-nanostructures that can be used to reinforce lime-based mortars for structural health monitoring of the restoration areas in Monuments of Cultural Heritage. Aspects like manufacturing cost, environmental impact, mechanical properties, and piezo-resistive response were investigated to select a sustainable carbon nanostructure to reinforce lime-based mortars under different, multi-decision criteria. A quantitative cost assessment methodology for five (5) different carbon nanostructures (graphene - G and multi-wall carbon nanotubes - MWCNTs) in laboratory-scale was adopted. The results were interpreted against the respective enhancement on the mechanical properties resulted on the end-products, e.g., the nano-reinforced lime-based pastes. The mechanical tests results showed that the modified MWCNTs enhanced flexural strength by 109 % due to increased anchoring of the reinforcing nanostructures in the paste, while compressive strength was not essentially affected. On the contrary, the modified graphene nanostructures enhanced only the compressive strength of the paste by 29 % due to their platelet geometry and their respective load transfer capability. The high manufacturing cost of reduced graphene (rGO) 2.62 €/g is related to the high cost of raw materials utilized, while graphene oxide (GO) has a manufacturing cost of 1.37 €/g, mainly due to the balanced contribution of material and labour cost, respectively. These nanostructures were calculated to have the lowest environmental impact (0.10 kg CO_2eq/g), while the carboxylation process increased essentially the equivalent carbon footprint by approximately (8 x) eight times (0.83 kg CO_2eq/g). In most cases, GO excel among the different carbon nanostructures studied, due to its low values in several criteria, like mechanical properties per manufacturing cost or mechanical properties per carbon footprint, as well as showed the best piezo-resistive response to cyclic compressive mechanical loads. To this end, it proved to be the most sustainable carbon nanostructure to be exploited in relevant applications.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141456"},"PeriodicalIF":7.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on mechanical behaviour of stainless steel-timber composite shear connections","authors":"Lin Chen,&nbsp;Lu Yang,&nbsp;Kelong Xu","doi":"10.1016/j.conbuildmat.2025.141532","DOIUrl":"10.1016/j.conbuildmat.2025.141532","url":null,"abstract":"<div><div>This study investigates the mechanical performance of stainless steel-timber composite shear connections equipped with stainless steel bolts. The research principally involved conducting shear push-out tests to explore the yield forms, failure modes, and the influence of parameters such as bolt diameter, spacing, and timber thickness on load-bearing capacity. The design methods for shear connections outlined in the Chinese standard GB 50005–2017, the American standard NDS-2018, and the European standard Eurocode 5 were evaluated. The results indicate that GB 50005–2017, NDS-2018 and Eurocode 5 provide conservative estimates of the bearing capacity of stainless steel-timber shear connections with Eurocode 5 offering more accurate predictions. Additionally, two analytical models, Foschi's and Hassanieh's, were evaluated and the new input parameters were proposed, with the latter model demonstrating superior accuracy in predicting the load-slip behaviour of the connections. The findings of this study contribute to the design and modeling of stainless steel-timber shear connections, providing valuable insights for future applications in structural engineering.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141532"},"PeriodicalIF":7.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishment of a prediction model for the compressive strength of alkali-activated fly ash and ground granulated blast furnace slag","authors":"Yangmei Zhou ,&nbsp;Yongsheng Ji ,&nbsp;Qi Xue ,&nbsp;Guangmin Dai ,&nbsp;Shengnan Xu","doi":"10.1016/j.conbuildmat.2025.141556","DOIUrl":"10.1016/j.conbuildmat.2025.141556","url":null,"abstract":"<div><div>To accurately calculate and predict the final compressive strength of alkali-activated fly ash and ground granulated blast-furnace slag composite cementitious materials(AAFGMs), this study investigates the temporal variation regularity of compressive strength for alkali-activated fly ash and ground granulated blast-furnace slag mortar specimens(AAFGM), identifies the curing age required for the full development of AAFGM compressive strength, and systematically analyzes the effects regularity of GGBFS content, activator modulus, and activator dosage on the compressive strength of AAFGM, ultimately establishing a predictive model for the compressive strength of AAFGM. The results indicate that, regardless of the GGBFS content, the compressive strength of AAFGMs reaches its final development within 60 days. Based on the influence regularity that the compressive strength of AAFGMs at 60 days increases initially with the activator dosage and then stabilizes, a two-stage predictive model for compressive strength is established. The compressive strength increases linearly at low activator dosages and stabilizes once a certain critical dosage is reached. The performance of the predictive model is closely related to the growth rate and activator critical dosage. The predictive model demonstrates a high degree of fit, with an R² value exceeding 0.9, and the error between predicted and experimental values is less than 10 %. This model exhibits high accuracy and reliability, enabling precise predictions of the final compressive strength.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141556"},"PeriodicalIF":7.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of hybrid microcapsules on the low-temperature cracking resistance of asphalt binder","authors":"Yalu Wen ,&nbsp;Feng Ma ,&nbsp;Zhen Fu ,&nbsp;Wenhao Dong ,&nbsp;Meng Jia ,&nbsp;Jiasheng Dai ,&nbsp;Yingjie Hou ,&nbsp;Xinye Jiang ,&nbsp;Yan Hao","doi":"10.1016/j.conbuildmat.2025.141525","DOIUrl":"10.1016/j.conbuildmat.2025.141525","url":null,"abstract":"<div><div>To improve the low-temperature crack resistance of asphalt binders, this study incorporates microcapsules hybridized with multi-walled carbon nanotubes (MWCNTs) into asphalt. The low-temperature creep properties, viscoelastic behavior, and crack resistance of the modified asphalt before and after long-term aging were comprehensively evaluated using the Bending Beam Rheometer (BBR), low-temperature Dynamic Shear Rheometer (DSR), and Asphalt Binder Cracking Device (ABCD) tests. Fourier Transform Infrared Spectroscopy (FTIR) was utilized to analyze the chemical structure of microcapsule-modified asphalt both before and after aging and to calculate the characteristic peak indices. Pearson correlation coefficients were established between the asphalt's low-temperature performance indicators and the characteristic peak indices. The results indicate that microcapsule incorporation significantly enhances the low-temperature crack resistance of asphalt by improving its elastic deformation capacity, optimizing interfacial bonding, and releasing the core material to soften the asphalt and fill cracks. As a result, the cracking temperature of unaged asphalt decreases from −27.3°C to −32.1°C. However, the enhancement effect reaches saturation when the microcapsule content exceeds 2.5 %. After long-term aging, the release of the microcapsule core material modifies the asphalt composition by increasing the branched alkane content. Meanwhile, MWCNTs can mitigate the oxidation reactions in asphalt and reduce the deterioration of low-temperature performance induced by aging. Moreover, in the unaged state, the stiffness modulus, percentage of residual stress, and cracking temperature strongly correlate with the proportion of branched alkanes and the relative content of aromatic compounds. After long-term aging, correlations among low-temperature performance indicators remain strong, whereas their correlations with microstructural chemical parameters weaken.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141525"},"PeriodicalIF":7.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of steam curing on the optimum sulfate content in limestone calcined clay cement (LC³)","authors":"Bruna Silva Almada ,&nbsp;Vanessa Pereira Santana ,&nbsp;Fernanda Pereira da Fonseca Elói ,&nbsp;Marcio Mateus Pimenta ,&nbsp;Augusto Cesar da Silva Bezerra ,&nbsp;White José dos Santos ,&nbsp;Guilherme Jorge Brigolini Silva","doi":"10.1016/j.conbuildmat.2025.141542","DOIUrl":"10.1016/j.conbuildmat.2025.141542","url":null,"abstract":"<div><div>LC³ cement reduces carbon dioxide emissions by 40 % compared to Portland cement, substituting 45 % of the clinker with calcined clay and limestone. To ensure optimal performance, gypsum content must be optimized, as the high surface area of additions increases sulfate demand. Curing temperature and time also impacts hydration, phase stability, and mechanical properties, requiring sulfate adjustments. This study investigates how curing parameters influence hydration, microstructure, and performance of LC³ cements to optimize sulfate content. LC³ pastes with up to 3 % extra gypsum were cured at ambient (25 ± 2°C, Ur&gt;95 %) and steam conditions (40–60°C, 4–16 hours, Ur&gt;95 %). Results showed that isothermal calorimetry and bound water content alone cannot determine optimal sulfate levels. maximum mechanical strengths were obtained with 2–3 % gypsum, with the influence of temperature predominating over time after 10 hours of curing. At 60°C, higher sulfate content promoted sulfate adsorption by C-(A)-S-H gel over ettringite formation.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141542"},"PeriodicalIF":7.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulation of asbestos wettability: A mechanistic exploration of experimental and molecular modeling of surfactant types","authors":"Junqing Meng ,&nbsp;Yingpei Lyu ,&nbsp;Jie Wang ,&nbsp;Chunhui Lyu ,&nbsp;Lijuan Wang","doi":"10.1016/j.conbuildmat.2025.141550","DOIUrl":"10.1016/j.conbuildmat.2025.141550","url":null,"abstract":"<div><div>Surfactant type is a key parameter affecting the interaction of water molecules with surfactants and its mechanism for regulating the wetting properties of asbestos has not been fully elucidated. In this paper, a combination of experiments, quantum chemical calculations, and molecular dynamics simulations has been utilized to thoroughly analyze the wetting properties of different surfactants on asbestos. The experimental results indicated that the contact angle decreased significantly with increasing concentration at surfactant levels below 0.05 wt%, reaching 0.09 wt% where AES demonstrated the most effective wetting. Depth-of-field microscopic observations showed that surfactant treatment could significantly reduce the roughness of the asbestos surface, decrease the number of pores and cracks, and enhance the dust suppression effect. Quantum chemical calculations revealed that the AES molecule promotes electrostatic adsorption with asbestos and improves wetting properties due to the strong negative ESP of its oxyethylene and sulphonate groups. Molecular dynamics simulations provide additional insights into how different surfactant types affect the wettability of asbestos, indicating that electrostatic interactions are crucial in determining the adsorption of water molecules. The hydrophilic groups of AES are positioned nearer to the asbestos surface, enhancing the adsorption of water molecules onto it. Combining experimental and simulation findings, the wettability of the eight surfactants on asbestos was AES &gt; SDBS &gt; AEO₃ &gt; BS-12 &gt; CAB-35 &gt; AEO₉ &gt; DTAB &gt; CTAB. This study affirmed the outstanding effect of AES as a potential surfactant for asbestos wetting and also furnished a theoretical foundation for exploring the mechanism of asbestos wetting.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141550"},"PeriodicalIF":7.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lifetime damage evolution of concrete joints in CRTS II slab track using mesoscale modelling under combined thermal action and vehicle load","authors":"Wen-Bin Li,&nbsp;Hua-Peng Chen,&nbsp;Yu Jiang","doi":"10.1016/j.conbuildmat.2025.141414","DOIUrl":"10.1016/j.conbuildmat.2025.141414","url":null,"abstract":"<div><div>The condition of the concrete joints in the slab track of the China Railway Track System (CRTS) II is crucial to the safe operation of high-speed railways. In order to predict the lifetime damage evolution of the concrete joint under the combined thermal action and vehicle load, a new coupled thermal-mechanical numerical model at the mesoscale is developed. First, the meteorology and heat transfer principles are adopted to simulate the temperature distribution of the slab track. The heterogeneous characteristics of the joint concrete are modelled by the concrete plastic constitutive model and random aggregate algorithm at the mesoscale. Then, the plastic strain state of the concrete joint can be obtained by the coupled thermal-mechanical analysis. The proposed numerical model can provide reliable predictions for the temperature distribution, and the concrete modelling at the mesoscale can accurately reflect the corresponding mechanical properties, which is confirmed by the relevant field measurements. Finally, the lifetime of the concrete joint is estimated by the accumulative residual plastic strain damage model associated with the plastic strain state under the combined thermal action and vehicle load. From the obtained results for the numerical example, the most vulnerable zone of the concrete joint is located at the top part of the T-shape concrete joint, and the climate change can significantly reduce the lifetime of the concrete joints in the slab track.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141414"},"PeriodicalIF":7.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexural behaviour of concrete beams repaired by hybrid fibre reinforced cementitious composites (HFRCCs) and subjected to simulated seawater dry-wet cycles","authors":"Gang Chen ,&nbsp;Mingyan Lv ,&nbsp;Haitang Zhu ,&nbsp;Zishi Zhan ,&nbsp;Qi Su","doi":"10.1016/j.conbuildmat.2025.141543","DOIUrl":"10.1016/j.conbuildmat.2025.141543","url":null,"abstract":"<div><div>To develop innovative strategies for enhancing the durability of marine concrete structures, hybrid fibre-reinforced cement-based composites (HFRCCs) were used to repair small concrete beams. This study investigated the effects of steel fibre content (0 % to 0.5 % by volume) combined with 1.5vt% polyvinyl alcohol (PVA) fibres, HFRCC layer depth (0–50 mm) and simulated seawater dry-wet cycles (0−40) on the flexural behaviour of repaired beams, with three specimens per series). Results indicated that increasing steel fibre content from 0 % to 0.5 % by volume improved both flexural strength and deflection-hardening behaviour. The optimal composition - 0.15 % steel fibres and 1.5 % PVA fibres, both by volumes - enhanced flexural strength by up to 20 %. A 52 % increase in flexural strength was achieved by increasing the HFRCC layer depth to 30 mm in beams with 0.25 % steel fibres and 1.5 % PVA fibres. Beams with 0.15 % steel fibres and 1.5 % PVA fibres exhibited superior deflection-hardening behaviour, characterised by significant strength gains and enhanced post-cracking toughness. Seawater exposure up to 20 cycles initially increased flexural strength due to continued hydration, while prolonged exposure to 40 cycles reduced flexural strength by 24 %, likely due to chloride accumulation in matrix pores. Based on these parameters, a new equation for predicting the flexural strengths of repaired beams was proposed. Finally, strain analysis confirmed strong compatibility between the HFRCC layer and concrete, improving durability and load-bearing capacity of repaired beams in marine environments. These findings contribute to optimised repair strategies for marine concrete structures, enhancing resilience and structural integrity in harsh environments.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"480 ","pages":"Article 141543"},"PeriodicalIF":7.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}