{"title":"Nano-silica-enhanced high-performance magnesium phosphate cement repair mortars: Optimization of interfacial bonding","authors":"Liang Jia , Weiwei Jia , Jian Guo , Yajie Sun","doi":"10.1016/j.conbuildmat.2025.142447","DOIUrl":"10.1016/j.conbuildmat.2025.142447","url":null,"abstract":"<div><div>This study explored the effects of nano-silica (NS) as a substitute for dead-burned magnesium oxide (MgO) on the performance of magnesium phosphate cement (MPC) and assessed the interfacial bonding between MPC-NS composite mortar and ordinary Portland cement (OPC) substrates. This study scrutinizes the impact of varying NS replacement ratios (ranging from 0 % to 4 % by mass of MgO, R<sub>M/N</sub>) on the setting time, compressive strength, flexural bond strength, and tensile bond strength for MPC. The investigation places particular focus on factors such as water resistance, curing age, and substrate surface roughness. The results demonstrate that the inclusion of NS significantly reduces the initial setting time of MPC to 17 min. A 3 % NS replacement ratio was found to optimize mechanical performance and water resistance, achieving a compressive strength of 58.45 MPa after 7 days of water immersion followed by 28 days of curing. Roughening the surface of the OPC substrate was shown to increase interfacial bond strength by 5.5–264 % compared to smooth surfaces. Microstructural analysis using XRD, SEM-EDS, and TGA-DTG revealed that 30-nm NS particles densify the MPC matrix through pore-filling. The dissolution of MgO releases Mg<sup>2+</sup> and OH⁻, which further promote the dissolution of amorphous silica and the sustained production of M-S-H gels. This process reduces interfacial crystalline phases and strengthens chemical bonds, thereby significantly enhancing the interfacial bond strength and durability between MPC-NS mortar and OPC. However, an excessive level of NS (4 %) can cause nanoparticle agglomeration and increase mortar consistency, potentially compromising its homogeneity and compactness, and thus limiting improvements in both mechanical and bonding performance. These findings provide a robust foundation for the development of high-performance, durable, and rapid-hardening inorganic repair materials.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142447"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522698","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}
Ömer Mercimek , Minel Ahu Kara Alaşalvar , Özlem Sağıroğlu Demirci , Sercan Tuna Akkaya , Alper Çelik , Abdullah Türer , İrfan Kocaman , Abdullah Togay , Burcu Güldür Erkal , Özgür Anıl
{"title":"Bond-slip behaviour of CFRP-timber joints: The role of strip width, length, and anchor in historical and new wood","authors":"Ömer Mercimek , Minel Ahu Kara Alaşalvar , Özlem Sağıroğlu Demirci , Sercan Tuna Akkaya , Alper Çelik , Abdullah Türer , İrfan Kocaman , Abdullah Togay , Burcu Güldür Erkal , Özgür Anıl","doi":"10.1016/j.conbuildmat.2025.142478","DOIUrl":"10.1016/j.conbuildmat.2025.142478","url":null,"abstract":"<div><div>The bond-slip behaviour between carbon fibre reinforced polymer (CFRP) and timber plays a crucial role in the structural performance of strengthened wood elements. This study investigates the bond-slip characteristics of CFRP–timber interfaces by evaluating the effects of wood type, CFRP strip width, strip length, and fan-type anchor arrangements, where mechanical anchors with radially expanding ends are used to improve the bonding performance. Single-lap shear tests were conducted on both historical (old) and newly sourced wood to determine the influence of material properties on bond strength and load transfer mechanisms. Digital Image Correlation (DIC) was utilized to capture full-field displacement and strain distributions along the bond interface, providing a detailed assessment of debonding mechanisms. Additionally, an analytical study was conducted to develop generalized equations for the proposed bond-slip model, offering a comprehensive understanding of interface behaviour. The results indicate that strip width has a more pronounced impact on bond performance compared to strip length, significantly increasing load-carrying capacity and energy absorption. Anchor implementation effectively delays debonding and enhances bond performance, with increasing anchor rows and columns improving stiffness and load resistance. However, beyond a certain threshold, excessive anchoring slightly reduces energy dissipation due to constrained deformation capacity. These findings highlight the necessity of optimizing CFRP strengthening configurations to maximize structural efficiency while maintaining a balance between strength, stiffness, and ductility. The insights obtained contribute to the development of more effective reinforcement strategies for both modern and heritage timber structures.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142478"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522700","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}
Renata Lorenzoni, Tobias Fritsch, Sabine Kruschwitz, Giovanni Bruno, Wolfram Schmidt
{"title":"Mechanical analysis of cement-biochar composites using in-situ X-ray microtomography and digital volume correlation","authors":"Renata Lorenzoni, Tobias Fritsch, Sabine Kruschwitz, Giovanni Bruno, Wolfram Schmidt","doi":"10.1016/j.conbuildmat.2025.142511","DOIUrl":"10.1016/j.conbuildmat.2025.142511","url":null,"abstract":"<div><div>This study addresses biochar as a potential carbon-sequestering filler in cement and examines its effect on mechanical properties using X-ray computed tomography (XCT) and digital volume correlation (DVC). DVC was reliably used to measure global displacement and has proven to be an effective method for correcting displacement data obtained from mechanical tests conducted without traditional instrumentation, such as extensometer. This made it possible to measure strain and Young's modulus accurately. The results demonstrate that while 5 vol% biochar replacement had minimal effect on mechanical properties, a 25 vol% biochar replacement caused a 35 % reduction in Young’s modulus and 40 % reduction in the ultimate compressive strength. Additionally, DVC detected strain concentrations and predicted material failure locations even when cracks could not be quantified using XCT alone. Moreover, the study reveals that biochar particles, due to their sharp geometry, increase internal shear strain during uniaxial compression, unlike round phases such as pores.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142511"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522111","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}
Shaowei Wang , Jiawen Wu , Yi Liu , Pinghua Zhu , Qifeng Lyu , Shaofeng Liu , Kun Hu , Dongyang Zhu
{"title":"Leaching-abrasion behaviour of canal lining concrete under alternating effect of freeze-thaw and low-velocity flowing water","authors":"Shaowei Wang , Jiawen Wu , Yi Liu , Pinghua Zhu , Qifeng Lyu , Shaofeng Liu , Kun Hu , Dongyang Zhu","doi":"10.1016/j.conbuildmat.2025.142496","DOIUrl":"10.1016/j.conbuildmat.2025.142496","url":null,"abstract":"<div><div>Under long-term alternating effect of freeze-thaw and low-velocity flowing water, characterising the leaching-abrasion behaviour of canal lining concrete has become a technical bottleneck in evaluating its durability in cold regions. To investigate this behaviour and elucidate the mechanisms and effects of these processes, this study conducted experiments under alternating freeze-thaw and flowing water conditions, with a maximum flow velocity of 5 m/s. The evolution of macro- and micro-scale properties, as well as phase composition, was analysed, and boundary movement criteria were established for concrete surface. The experimental results show that the abrasion depth of concrete increases linearly with service time. Compared to warm regions and static water environments, the combined effect of freeze-thaw cycles and flowing water in cold regions accelerates the leaching-abrasion rate by approximately 8 times. The rate is further amplified by factors of 1.18, 1.37, 1.22, 1.29, and 1.37 at flow velocities of 1, 2, 3, 4, and 5 m/s, respectively. This enhancement is primarily attributed to the deterioration of interfacial transition zone. Freeze-thaw are the dominant factor, inducing numerous microcracks, while flowing water significantly accelerates calcium leaching. Boundary movement on the concrete surface occurs when the residual solid calcium content and aggregate protrusion height reach critical values. The critical calcium content is 25 %, while the protrusion height decreases linearly with increasing aggregate diameter, reaching 60 % and 30 % for diameters of 4.75 and 9.5 mm, respectively. Under the action of leaching-abrasion alone, flowing water at velocities up to 5 m/s significantly accelerates leaching but causes negligible abrasion.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142496"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522697","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":"Water-swelling behavior and self-reinforcing mechanical properties of joint sealing material in underground prefabricated structure","authors":"Zenian Wang , Hai-Min Lyu , Ruling Zhang","doi":"10.1016/j.conbuildmat.2025.142451","DOIUrl":"10.1016/j.conbuildmat.2025.142451","url":null,"abstract":"<div><div>Water swelling rubber (WSR) is widely used in joint sealing systems for prefabricated subway stations and shield tunnels due to its dual advantages of elasticity and swelling capacity. Nevertheless, the significant mechanical degradation of WSR following hydration remains a critical barrier to its broader practical implementation. To address this challenge, a nano-MgO-reinforced composite (WSRNM) was developed for underground structural joints. This study systematically investigated the effects of nano-MgO content (20, 40, and 60 phr (parts per hundred rubber)) on both water-swelling behavior and mechanical properties of WSRNM. Experimental protocols combining water-swelling tests, uniaxial tensile measurements, and scanning electron microscopy (SEM) characterization revealed two key findings: (1) A concentration-dependent increase in water-swelling performance (up to 8 % enhancement over conventional WSR) with higher nano-MgO dosage; and (2) A non-monotonic mechanical response, characterized by maximum enhancement rates of 110 % in tensile strength and 70 % in elongation at break (both relative to conventional WSR) after 240 h of water immersion, followed by deterioration beyond the optimal filler content. Microstructural evidence indicates that water-induced surface/internal micropore formation weakens mechanical integrity, while concurrent hydration of nano-MgO generates expanding magnesium hydroxide crystals that partially occlude these defects. This creates a dynamic self-reinforcement process. The dual-phase mechanism clarifies the critical balance between swelling characteristics and mechanical performance in the WSRNM composite, offering a scientific foundation for optimizing WSRNM composites specifically engineered for waterproofing systems in underground prefabricated structures.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142451"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522699","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}
Carlo Joseph D. Cacanando, Luis Felipe López, Emmanuel Atienza, Nischal P.N. Pradhan
{"title":"Experimental characterization of mechanical properties of Bambusa blumeana bamboo poles and determination of design values","authors":"Carlo Joseph D. Cacanando, Luis Felipe López, Emmanuel Atienza, Nischal P.N. Pradhan","doi":"10.1016/j.conbuildmat.2025.142498","DOIUrl":"10.1016/j.conbuildmat.2025.142498","url":null,"abstract":"<div><div>This research examines the geometric, physical and mechanical properties of graded <em>Bambusa blumeana</em> poles in their natural round form. It presents the first systematic large-sample experimental characterization of all mechanical properties described by ISO 22157:2019. By testing over 1262 samples, it derives the mean and 5th percentile characteristic values of the examined mechanical properties. Findings reveal that a significant percentage of the graded population does not meet the minimum requirements of ISO 22156:2021. However, this does not render the species unviable, as evident by its successful use in thousands of bamboo houses in the Philippines. Instead, it highlights the need to ensure the standard is inclusive of a wider range of bamboo species. Furthermore, the coefficient of variations of the examined mechanical properties are similar to that of conventional building material, i.e. timber, highlighting the quality of the grade. The results also indicate that the ISO 12122–1:2014 non-parametric methods (based on AS/NZS 4063.2) return characteristic values that are consistent with other contemporary standards. In contrast, the parametric approaches for deriving characteristic values seem less suited for the examined dataset. Overall, the derived characteristic values are promising for the engineered design of bamboo structures using round <em>Bambusa blumeana</em> poles.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142498"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522110","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}
Shui Liu , Xin Wang , Chang Su , Yahia M.S. Ali , Zhongguo Zhu , Zhishen Wu
{"title":"Durability of hybrid-RC beams with steel and BFRP bars under a simulated marine environment","authors":"Shui Liu , Xin Wang , Chang Su , Yahia M.S. Ali , Zhongguo Zhu , Zhishen Wu","doi":"10.1016/j.conbuildmat.2025.142497","DOIUrl":"10.1016/j.conbuildmat.2025.142497","url":null,"abstract":"<div><div>Hybrid reinforced concrete (hybrid-RC), incorporating steel and fiber-reinforced polymer (FRP) bars, has emerged as a viable solution to address the performance deficiencies in reinforced concrete with solely steel or FRP bars. However, the durability of it in marine environments remains inadequately understood. To address this knowledge gap, this study experimentally investigated the flexural behavior of hybrid-RC beams with steel and basalt fiber-reinforced polymer (BFRP) bars after being subjected to combined effects of sustained loading and a simulated seawater environment. Several parameters were considered, including exposure duration, as well as surface treatment, spacing, and concrete cover of BFRP bars. The test results are discussed with respect to failure mode, ultimate moment, deflection response, cracking behavior, and ductility. The findings indicate that exposure to the marine environment did not change the final failure mode, which was characterized by concrete crushing. However, concrete cover peeling occurred during concrete crushing in the steel-RC beams exposed for 240 and 360 days, and in the 360-day-exposed hybrid-RC beam with a larger concrete cover. All beam specimens showed an initial increase in ultimate moment, which gradually decreased with longer exposure. After 360 days, the specimen reinforced with sand-coated BFRP bars achieved the highest ultimate moment retention (103.7 %), while that with ribbed BFRP bars and a larger cover exhibited the lowest (84.4 %). With prolonged exposure, all specimens demonstrated a gradual increase in stiffness, whereas the maximum crack width first decreased and then increased. Notably, the hybrid-RC beams with sand-coated BFRP bars exhibited a significantly slower degradation in ultimate moment, stiffness, and crack control performance, suggesting that sand-coating is an effective method for improving the durability of BFRP bars.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142497"},"PeriodicalIF":7.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523245","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":"Innovative castable polyurethane elastomer bearing system for highway bridges: Mechanical properties and performance evaluation","authors":"Xiaotao Yu , Yong Yuan , Siqi Wang , Zhuowei Deng","doi":"10.1016/j.conbuildmat.2025.142494","DOIUrl":"10.1016/j.conbuildmat.2025.142494","url":null,"abstract":"<div><div>This study developed a castable polyurethane elastomer (CPUE) bearing system for bridges, consisting of fixed bearings and sliding bearings. The fixed bearing is composed of polyurethane elastomer (PUE) combined with nine layers of steel plates, while the sliding bearing is formed by casting PUE with five layers of steel plates, with a 3 mm layer of polytetrafluoroethylene (PTFE) adhered to the top surface. PUE was synthesized using organosilicon diol, TDI-100, PCL-210N, and MOCA, and its mechanism was analyzed through ATR-FTIR, XRD, SEM, DSC, and DMA techniques. The PUE exhibited a glass transition temperature (Tg) of −24.8°C, ensuring flexibility under low-temperature conditions. Mechanical performance tests revealed that the vertical stiffness of the fixed and sliding bearings under 20 MPa stress was 2636.56 kN/mm and 2167.73 kN/mm, respectively, demonstrating excellent load-bearing capacity. Under cyclic shear strain of 100 % and 0.05 Hz frequency, the fixed bearing maintained a stable equivalent damping ratio of 13.6 ± 0.5 %, while the sliding bearing achieved a friction coefficient of 0.045 with PTFE. Horizontal shear tests under varying frequencies (0.005–0.1 Hz), temperatures (-10°C to 80°C), pressures (10–30 MPa), shear strains (50–250 %), and repeated loading (50 cycles at 100 % strain) showed no failure of the CPUE bearings, with residual deformation less than 5 % of initial displacement, indicating good hysteresis performance and resistance to deformation. This study provides a reference for the application of CPUE bearing systems in long-span bridges with high load-bearing requirements.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142494"},"PeriodicalIF":7.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522108","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":"Strengthening of glued-laminated timber beams using externally bonded fiber reinforced polymer sheets and near surface mounted reinforcement","authors":"Jodie Goodwin, Joshua E. Woods","doi":"10.1016/j.conbuildmat.2025.142477","DOIUrl":"10.1016/j.conbuildmat.2025.142477","url":null,"abstract":"<div><div>This study examines the use of externally bonded fiber reinforced polymer (FRP) sheets and near-surface mounted (NSM) reinforcement to improve the flexural strength of glued-laminated (glulam) timber beams. Distributed fiber optic sensors (DFOS) were used to evaluate the distribution of strains over the length and depth of the beams as well as for quantification of the maximum strains in the reinforcing materials. The influence of FRP fiber type (glass or carbon), number of FRP layers, FRP anchorage detailing, and NSM bar type on flexural stiffness, strength, and ductility was assessed. NSM materials for flexural strengthening included both steel and titanium rebar which is a novel solution that, similar to FRP, is light-weight and corrosion-resistant. The results showed that the use of externally bonded FRP sheets on the tension side can promote a compression failure, avoiding brittle tension failure or FRP debonding and result in improvements in stiffness and strength of up to 160 % and 156 %, respectively when compared to the control. The addition of NSM reinforcement in the compression region was found to result in further increases in the beam flexural stiffness and strength by up to 248 % and 230 %, respectively when compared to the control. The distribution of strain and maximum strain achieved in the wood, FRP, and NSM reinforcement are discussed in the paper.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142477"},"PeriodicalIF":7.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517416","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}
Ilyas Chouaybi, Siham Soussi, Hasna Ouassif, Mohammed Bettach, El Mostafa Moujahid
{"title":"Sustainable synthesis of ettringite from phosphogypsum and aluminum foil waste: Characterization and Rietveld refinement analysis","authors":"Ilyas Chouaybi, Siham Soussi, Hasna Ouassif, Mohammed Bettach, El Mostafa Moujahid","doi":"10.1016/j.conbuildmat.2025.142402","DOIUrl":"10.1016/j.conbuildmat.2025.142402","url":null,"abstract":"<div><div>Phosphate fertilizers are essential for maintaining global agricultural productivity and ensuring food security for a growing population. However, their production generates substantial quantities of phosphogypsum, a byproduct that presents significant environmental challenges. This study addresses the pressing need for effective phosphogypsum waste management by exploring its conversion into ettringite, a valuable material with wide raging applications in cement chemistry and environmental remediation. The primary objective of this research was to develop a cost-effective synthesis pathway to transform phosphogypsum into ettringite through a controlled coprecipitation process. The dissolution of phosphogypsum was systematically optimized by adjusting key parameters, including the concentration of hydrochloric acid and temperature. The most effective condition was found to be 2 M HCl at 60 °C, which ensured high solubility and process efficiency. Under this condition, a fixed mass of 2.5 g of phosphogypsum was used along with 0.2 g of aluminum waste to maintain a Ca/Al molar ratio of 2, enabling controlled precipitation of ettringite. The synthesized material was thoroughly characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and energy-dispersive X-Ray (EDX), confirmed the phase composition, high crystallinity and characteristic morphology. Additionally, Rietveld refinement was performed to quantitatively analyze the crystalline structure and phase purity, ensuring the formation of a well-defined trigonal ettringite structure. This innovative approach effectively transformed phosphogypsum into a valuable material, demonstrating its potential for scalable and sustainable applications in waste valorization and industrial use. This approach not only reduces waste problems, but also contributes to the sustainable use of resources and circular economy practices.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"490 ","pages":"Article 142402"},"PeriodicalIF":7.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517493","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}