Construction and Building Materials最新文献

{"title":"Corrosion non-uniformity of in-service reinforced concrete beams subjected to natural marine environment","authors":"Wei-Ping Zhang ,&nbsp;Nai-Hao Zheng ,&nbsp;Chao Jiang ,&nbsp;Feng Wu ,&nbsp;Yang Liu ,&nbsp;Jun-Li Qiu ,&nbsp;Rui-Lin Wang","doi":"10.1016/j.conbuildmat.2026.145698","DOIUrl":"10.1016/j.conbuildmat.2026.145698","url":null,"abstract":"<div><div>This study systematically investigates the non-uniform corrosion characteristics of reinforcements in eight reinforced concrete (RC) beams extracted from a marine platform after 26 years of natural exposure. High-precision 3-D Laser scanning was employed to obtain detailed morphological data, enabling analysis of corrosion patterns influenced by environmental exposure, chloride ingress, and stress distribution. The results show significant spatial variability in corrosion at multiple scales. Construction-induced reinforcement cage eccentricity reduced concrete cover thickness on specific sides, exacerbating asymmetric corrosion. Surface directly exposed to the marine environment suffers from higher-intensity wind-driven salt spray and moisture, leading to higher corrosion severity. Corner rebars exhibited average corrosion degrees up to 7.78 times those of side rebars due to bidirectional chloride attack. Longitudinal corrosion distribution along bottom rebars followed a parabolic pattern, with the most severe corrosion occurring at mid-span. This distribution is consistent with higher tensile stresses promoting concrete microcracking and pore connectivity, thereby accelerating corrosive agent ingress and demonstrating stress-corrosion synergy. Stirrups provided cathodic protection to longitudinal rebars at low-to moderate corrosion levels; but this effect diminished beyond a threshold. These findings indicate that traditional models based on accelerated uniform corrosion may underestimate risks, emphasizing the need for probabilistic approaches incorporating non-uniformity to improve safety assessments of in-service marine RC structures.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145698"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387171","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":"The role of rejuvenator functional groups in restoring aged SBS modified asphalt: Effects of SBS molecular architecture and block ratio","authors":"Chenghao Liang ,&nbsp;Changjun Sun ,&nbsp;Duo Liu ,&nbsp;Qishi Li ,&nbsp;Jinyang Lin ,&nbsp;Xianhe Wu ,&nbsp;Henglong Zhang","doi":"10.1016/j.conbuildmat.2026.145682","DOIUrl":"10.1016/j.conbuildmat.2026.145682","url":null,"abstract":"<div><div>To elucidate the reaction mechanisms between functional groups of reactive rejuvenators and the molecular architecture of styrene-butadiene-styrene copolymer (SBS), this study systematically investigates the rejuvenation effects of a monofunctional rejuvenator, dodecenyl succinic anhydride (DDSA) and a bifunctional rejuvenator, 4,4′-diaminodiphenylmethane (MDA) on aged SBS modified asphalt (SBSMA) incorporating linear and star-shaped SBS with different block ratios. The macroscopic properties and microstructural evolution of the rejuvenated binders were evaluated. The results show that the molecular architecture and block ratio of SBS have a significant effect on the aging sensitivity and rejuvenation response of SBSMA. Both rejuvenators effectively mitigate aging-induced hardening and successfully reconstruct the characteristic phase angle plateau of SBSMA. DDSA primarily promotes the reconstruction of the SBS polymer network, enhances chain flexibility and showing superior performance in low-temperature rheological recovery. In contrast, owing to its bifunctional molecular structure, MDA more effectively reconstructs polymer network junctions in star-shaped SBS systems, thereby significantly enhancing high-temperature performance and fatigue resistance. Gel permeation chromatography and fluorescence microscopy analyses further confirm that MDA achieves a more substantial recovery of the SBS large molecular weight region and the three-dimensional polymer network in star-shaped systems compared with DDSA. The rejuvenation efficiency of reactive rejuvenators is governed not only by their functional group characteristics but also by the molecular architecture and block ratio of SBS. This study reveals the differentiated rejuvenation mechanisms of reactive rejuvenators from the perspective of molecular structure matching, providing a theoretical basis for the targeted rejuvenation of SBSMA and the molecular design of rejuvenators.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145682"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387210","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":"Effect of calcined coal gangue powder on the properties of basalt fiber-reinforced concrete","authors":"Xiaoqi Liang ,&nbsp;Yunfeng Zhao ,&nbsp;Fengjie Cai ,&nbsp;Taoli Xiao ,&nbsp;Xiang Jiang","doi":"10.1016/j.conbuildmat.2026.145662","DOIUrl":"10.1016/j.conbuildmat.2026.145662","url":null,"abstract":"<div><div>To promote the engineering application of coal gangue and fiber-reinforced concrete, this study employed acoustic emission (AE) and scanning electron microscopy (SEM) techniques to investigate the effect of calcined coal gangue powder (CGP) replacement ratios of cement on the compressive and tensile properties of basalt fiber-reinforced concrete (BFRC). Uniaxial compression and splitting tensile tests were conducted on BFRC specimens with four different CGP replacement ratios (0 %, 10 %, 20 %, and 30 %), and the synergistic mechanism between CGP and basalt fibers (BF) was further explored. The AE characteristics delineated four distinct failure stages in BFRC: microcrack propagation, fiber/matrix interface debonding, fiber fracture/matrix cracking, and post-peak failure, and clarified the damage mechanisms for each stage. Moreover, quantitative RA-AF analysis of the AE signals using the Kneedle algorithm confirmed that the failure mode of BFRC was predominantly governed by shear failure. The results indicated that the physical and mechanical properties of BFRC first increased and then decreased with increasing CGP replacement ratios. A 10 % CGP replacement ratio optimally improved the micropore structure and interface bonding performance of BFRC by virtue of the pozzolanic effect, rendering the ultrasonic pulse velocity (UPV), compressive strength, and splitting tensile strength of the C10BF15 group significantly superior to those of other groups. Therefore, 10 % was determined as the optimal replacement ratio.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145662"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387209","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":"Mechanical and bond behavior of fiber-reinforced recycled aggregate concrete with steel and BFRP bars","authors":"Hemn Jalal Hussein ,&nbsp;Masoud Khalighi ,&nbsp;Ghazi Bahroz Jumaa","doi":"10.1016/j.conbuildmat.2026.145679","DOIUrl":"10.1016/j.conbuildmat.2026.145679","url":null,"abstract":"<div><div>This research evaluates the effect of using recycled aggregate concrete (RAC) in structural concrete by studying the mechanical properties and bond performance between reinforcing steel/basalt fiber-reinforced polymer (BFRP) bars and recycled concrete aggregate (RCA), with and without fibers. A total of 53 pull-out test specimens and 180 mechanical property specimens were prepared and tested. The considered variables are RCA replacement ratios (0 %, 50 %, and 100 %), two types of bars (BFRP, Steel), three bars’ diameters (10 mm, 12 mm, and 16 mm), two fiber types, Steel fiber (SF) and Chopped basalt fiber (BF), and two fiber contents (0.3 % and 0.6 %), with a constant embedment length. The results showed similar bond behavior for both natural and recycled concrete with BFRP or steel bars. As RCA replacement increased, bond strength and slip resistance decreased, especially when 100 % RCA was used. BFRP bars exhibited lower bond strength compared to steel. Moreover, as bar diameter increased, bond strength decreased for both steel and BFRP bars in both normal and recycled concrete. Adding steel fibers significantly improved bond strength and prevented cracks, while basalt fibers reduced bond strength but increased peak slip. Three failure modes were observed: 35 % pull-out failure, 36 % split failure, and the rest had pullout-splitting failure. The study found that RCA reduced the mechanical properties of concrete, but adding steel or basalt fibers increased compressive strength (<em>f</em>_<em>cu</em>), split tensile strength(<em>f</em>_<em>ct</em>), and flexural strength(<em>f</em>_<em>r</em>). SF were more effective than BF in enhancing strength. Finally, the results indicate that a small amount of BF has a greater effect on increasing tensile and flexural strength than a higher amount of BF.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145679"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387084","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":"Durability influencing factors and attenuation characteristics of composite modified asphalt anti-skid surface layer","authors":"Hao Li ,&nbsp;Liwan Shi ,&nbsp;Jiquan Li ,&nbsp;Tao Ma ,&nbsp;Youwei Tan ,&nbsp;Weizhong Chen ,&nbsp;Yongkang Lin","doi":"10.1016/j.conbuildmat.2026.145631","DOIUrl":"10.1016/j.conbuildmat.2026.145631","url":null,"abstract":"<div><div>To improve the durability and rutting resistance of anti-skid surface layer, this paper analyzed the influencing factors of anti-skid surface layer durability and proposed a new test method. It also investigated the effects of gradation, asphalt binder, temperature, and anti-rutting agent on the durability of anti-skid surface layer, and revealed the attenuation mechanism of anti-skid surface layer durability. The results indicate that for factors affecting the durability of anti-skid surface layers, high temperatures accelerate the rate of skid performance degradation, gradation determines the initial skid performance but has little effect on the degradation of skid resistance, and asphalt binder mainly affects the attenuation rate of skid resistance. After incorporating 0.2 % Asphalt Rutting Preventer (ARP) anti-rutting agent into the SBS modified anti-skid surface layer, the initial BPN increased by about 20 %, but the BPN decreased by about 26 %, and the rut depth was reduced by about 40 %. The incorporation of hard asphalt improves the anti-skid surface layer durability. The skid resistance of the SBS-Rubber Asphalt (SRA) anti-skid surface layer is approximately three times greater than that of SBS modified asphalt, whereas the mixture containing 0.2 % ARP anti-rutting agent exhibits the most rapid reduction in skid resistance. The conclusions can provide a reference basis for the material design of anti-skid surface layers.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145631"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387086","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":"SCECC-confined seawater coral concrete for island and reef structures: Dynamic mechanical properties and damage evolution","authors":"Zhenbo Wang ,&nbsp;Wenjie Xu ,&nbsp;Pengfei Li ,&nbsp;Wei Xu ,&nbsp;Peng Sun ,&nbsp;Yudong Han ,&nbsp;Bo Liu ,&nbsp;Dongmin Wang","doi":"10.1016/j.conbuildmat.2026.145639","DOIUrl":"10.1016/j.conbuildmat.2026.145639","url":null,"abstract":"<div><div>Seawater coral aggregate concrete (SCAC) is an economical material for island and reef engineering due to in-situ resource utilization, but its high brittleness leads to poor impact resistance and safety concerns. This study employs seawater coral sand engineered cementitious composite (SCECC) as an external confinement layer to enhance the impact performance of SCAC. The synergistic effects of confinement-layer thickness (12.5/ 37.5 mm) and coral sand gradation (maximum particle size 0.60/1.18/2.36 mm) on SCECC-SCAC composite cylinders are systematically investigated using split Hopkinson pressure bar (SHPB) tests and finite element analysis. Quasi-static tests show that SCECC confinement markedly increases the compressive strength of SCAC (up to 65.7 %) while maintaining core integrity. Under impact loading, both SCAC and SCECC-SCAC exhibit pronounced strain-rate sensitivity. The maximum average dynamic strengths of SCECC-SCAC reach 109.0 MPa and 123.4 MPa for the two thicknesses. The SCECC layer increases the ultimate compressive strain by up to ∼70 % and raises the energy dissipation density to 2234.8 kJ/m³, effectively suppressing unstable crack propagation at high strain rates (&gt;120 s⁻¹) and transforming the failure mode from catastrophic fragmentation to controlled multi-crack damage. Based on SHPB data, a logarithmic DIF prediction model is established, capturing the dependence of dynamic strength on strain rate. Three-dimensional finite element models incorporating JH-2, modified CDP and CZM interfaces reproduce dynamic stress-strain curves with peak-stress errors within ∼3 % and reasonably capture damage evolution. The proposed SCECC-SCAC system offers a feasible solution for impact-resistant design in island and reef engineering.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145639"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387158","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":"Compressive behaviours of UHPC-filled aluminium stub tubular columns at cold-regions low temperatures","authors":"Jia-Bao Yan ,&nbsp;Jinyuan Yang ,&nbsp;Yixuan Wang ,&nbsp;Qing Chang ,&nbsp;Huihong Li","doi":"10.1016/j.conbuildmat.2026.145655","DOIUrl":"10.1016/j.conbuildmat.2026.145655","url":null,"abstract":"<div><div>This paper develops a new type of ultra-high performance concrete (UHPC)-filled aluminium stub tubes (UFASTs) for cold-region coastal engineering constructions. Their compressive behaviours at cold-region low temperatures were experimentally investigated. Axial compression tests were performed on 21 UFASTs at 20∼ −80℃. The main test parameters were testing low temperature (<em>T</em>) and number of stiffeners. Under axial compression, UFASTs failed in aluminium-tube local buckling and UHPC crushing. Decreasing <em>T</em> from 20℃ to −80℃ significantly increased the ultimate compression resistance (<em>P</em>_u) and initial stiffness (<em>K</em>₀) of UFASTs by 34.4 % and 13.5 %, respectively. Finite element models (FEMs) were also developed to simulate UFASTs under axial compression at cold-region low temperatures. Followed numerical parametric studies were carried out to check the key influencing parameters on compression behaviours of UFASTs, i.e., wall thickness, concrete strength and slenderness ratio. In addition, prediction equations in EC4, AISC 360–16 and AIJ were also checked to evaluate the <em>P</em>_u of UFASTs at low temperatures. Among these three codes, AIJ provides the most reliable performance.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145655"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386973","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":"Failure mechanism analysis and machine learning-based residual strength prediction of CFRP with different ply orientations and loading types under six typical accelerated aging environments","authors":"Guofeng Qin ,&nbsp;Chenglong Su ,&nbsp;Peiwen Mi ,&nbsp;Peng Huang ,&nbsp;Qiuhan Fan ,&nbsp;Ming Li ,&nbsp;Wei Tan","doi":"10.1016/j.conbuildmat.2026.145630","DOIUrl":"10.1016/j.conbuildmat.2026.145630","url":null,"abstract":"<div><div>Carbon Fiber Reinforced Polymer (CFRP) is a pivotal engineering material valued for its high specific strength and stiffness, yet its long-term performance is susceptible to degradation under combined environmental exposures. To systematically investigate this issue, this study examined the performance evolution and failure mechanisms of CFRP under six distinct accelerated aging environments: low temperature and low humidity (LTLH), high temperature and low humidity (HTLH), high temperature and high humidity (HTHH), immersion at room temperature (IRT), thermal cycling (TC), and hygrothermal cycling (HC). Specimens with ply orientations of 0°, 45°, and 90° were fabricated for both tensile and compressive testing. Mechanical property evaluation was integrated with chemical and microstructural characterization via Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG), and scanning electron microscopy (SEM) to elucidate underlying degradation mechanisms. The influence of aging environments, ply orientation, and loading type on residual strength was quantitatively assessed using analysis of variance (ANOVA), while four machine learning models—Back Propagation Neural Network (BPNN), Support Vector Regression (SVR), Random Forest (RF), and Extreme Gradient Boosting (XGBoost)—were employed to predict the residual strength of aged CFRP.</div><div>The results indicate that the residual strength of CFRP exhibits complex nonlinear degradation across all six aging environments, which can be attributed to the competition between performance gain from post-curing and performance degradation caused by hydrolysis and thermal oxidation. ANOVA further quantified the influence of individual factors (accelerated aging environment, ply orientation, load type) and multi-factor couplings on the residual strength of CFRP. Among the predictive models, BPNN demonstrated superior performance with a coefficient of determination (R²) of 0.985, enabling accurate prediction of CFRP residual strength across the multiple aging environments. This work provides a reliable technical basis for the long-term performance assessment and safe engineering application of CFRP.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145630"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387089","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":"A mechanistic study of a novel self-healing concpet for cement enabled by large clinker particles: Recovery of transport properties and microstructure characteristics","authors":"Jialiang Wang ,&nbsp;Binmeng Chen ,&nbsp;Min Wu","doi":"10.1016/j.conbuildmat.2026.145707","DOIUrl":"10.1016/j.conbuildmat.2026.145707","url":null,"abstract":"<div><div>Self-healing cement holds considerable potential in enhancing durability and building low-carbon concrete structures. However, most existing self-healing strategies rely on external healing agents, which often raises compatibility concerns and compromises scalability and cost-effectiveness. Here, we propose a novel strategy by partially replacing cement with large clinker particles of varying sizes (40–60 μm, 60–90 μm, 0.5–1.0 mm), and evaluate the healing effects on transport properties (capillary water absorption and gas permeability), crack closure, and microstructure evolution. The results showed that the mixes containing the 40–90 μm particles exhibited pronounced healing effects within 56 days, with the recovery of initial/secondary water absorption, gas permeability, and crack-healing width reaching 67.0–67.6 %, 83.2–83.4 %, 78.6–82.6 %, and 203–225 μm, respectively, significantly outperforming the control mix (46.2 %, 49.5 %, 64.1 %, and ∼150 μm). The XCT results revealed improved sealing along the crack depth and refinement of crack-adjacent pore structures. The TG-DTG analyses indicated that the residual unhydrated clinker acted as a delayed reaction reservoir, sustaining hydration over time. The SEM-EDS results suggested more uniform and stabilized deposition of hydration products (e.g. suppressing C-S-H over-crystallization and excessive AFm formation). Collectively, these results support a mechanism-to-performance linkage in which sustained hydration of large clinker particles enables progressive densification of the near-crack matrix, reducing transport-path connectivity and promoting recovery of transport properties. This work suggests a simplistic, robust and readily scalable approach to transform self-healing of cement-based materials, leading to resilient and sustainable buildings and structures.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145707"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387161","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":"Improving mechanical and durability properties of waste tire rubber concrete using compression casting method","authors":"Chengzhi He ,&nbsp;Yu-Fei Wu ,&nbsp;Xiaoshan Lin","doi":"10.1016/j.conbuildmat.2026.145641","DOIUrl":"10.1016/j.conbuildmat.2026.145641","url":null,"abstract":"<div><div>The incorporation of waste tire rubber in concrete offers notable environmental and economic benefits. However, its application is limited by strength loss and durability concerns, especially with coarse rubber aggregates. To address these performance limitations, a novel compression casting method is employed in this study. Concrete mixtures containing 0–40 % chipped rubber as partial replacement for natural coarse aggregate were evaluated in terms of compressive strength, elastic modulus, splitting tensile strength, water sorptivity, chloride permeability, and carbonation resistance. Results revealed that increasing the rubber content from 0 % to 40 % led to pronounced reductions in the compressive strength and splitting tensile strength of conventional rubber concrete, by up to 70 % and 45 %, respectively, while increasing the carbonation depth by up to 20 %. In contrast, compression casting rubber concrete with a 20 % rubber replacement achieved improvements of 99 % in compressive strength, 74 % in splitting tensile strength, and 65 % in carbonation resistance compared with its conventional casting counterpart. It also demonstrated reduced water sorptivity and enhanced resistance to chloride penetration. This study confirms that compression casting is an effective method for producing structurally reliable rubber concrete, advancing the sustainable reuse of waste rubber in construction.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"516 ","pages":"Article 145641"},"PeriodicalIF":8.0,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387170","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}