Cement and Concrete Composites最新文献

{"title":"Effect of cement content on the pore structure and imbibition rate of lime-cement mortars","authors":"Dulce E.Valdez Madrid, Natalia Alderete, Veerle Boterberg, Nele De Belie, Veerle Cnudde","doi":"10.1016/j.cemconcomp.2025.106352","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106352","url":null,"abstract":"Understanding the pore structure and water transport properties of cement-lime mortars has significant implications for the design of sustainable structures. By optimizing these properties, we can improve the compatibility between mortars and porous substrates such as building stones and bricks, as well as enhance the durability and efficiency of mortar in construction. This study provides a comprehensive analysis of the pore structure of cement-lime mortar mixtures and examines its implications for mechanical performance, natural carbonation, and capillary water uptake over time. For this purpose, the porosity of six cement-lime mortar mixtures was characterized using dynamic vapor sorption, mercury intrusion porosimetry, micro-computed tomography, capillary water uptake and water absorption under vacuum. It was found that cement-rich mixtures lead to a more refined pore network dominated by microcapillaries and decreased porosity with a unimodal pore size distribution, resulting in higher strength, while lime promotes the formation of macrocapillaries. Replacing 37-55 % of the binder mass with cement increases the primary capillary imbibition rate of lime mortars. However, this rate decreases when the cement content exceeds 55 %, likely due to the higher volume of microcapillaries formed by the addition of cement. The study highlights the importance of balancing lime and cement content to optimize the pore structure and water transport properties of mortars, which in turn affects their mechanical performance and durability.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous flow of filling slurry under shear: an explanation of its nonlinear rheological properties","authors":"Cuiping Li, Xue Li, Zhuen Ruan, Hezi Hou, Long Chen, Kailong Qian, Hairui Du, Zhipeng Xiong","doi":"10.1016/j.cemconcomp.2025.106348","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106348","url":null,"abstract":"Cemented filling technology serves as an efficient method for addressing tailings and enhancing the stability of goafs, establishing itself as a crucial application in metal mining operations. The mixing stage is pivotal in preparing the filling slurry, as it directly impacts the slurry working performance. The rheological properties of slurry are critical indicators of its mixing quality, influenced by various factors. To elucidate the meso-mechanical effects on these rheological properties, this study conducted macroscopic rheological experiments to derive the flow curve of slurries and employed low-field nuclear magnetic resonance experiments to quantify water distribution within the slurry. The study revealed that post-mixing, the slurry exhibited significant nonlinear rheological behaviors. Furthermore, the low-field nuclear magnetic resonance results indicated that changes in material conditions led to notable alterations in the strength of particle interactions. By integrating experimental findings, the analysis delved into inter-particle interactions, highlighting that colloidal forces, hydration forces, and friction forces predominantly govern these interactions. Ultimately, by understanding the modes of particle contact, the meso-mechanical underpinnings of the slurry's rheological properties were clarified. These insights offer valuable guidance for optimizing the mixing process and controlling the rheological behavior of filling slurries in metal mining, paving the way for more efficient and stable applications.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pore Pressure Dynamics in Early-Age Cemented Fill Under Multiaxial Stress Conditions","authors":"Hongbin Liu, Mamadou Fall","doi":"10.1016/j.cemconcomp.2025.106349","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106349","url":null,"abstract":"In deep underground mines, cemented paste backfill (CPB) is subjected to complex multiaxial stress conditions, including vertical self-loading and horizontal rockwall closure, which can significantly influence the evolution of pore water pressure (PWP). Understanding PWP development under these conditions is essential for ensuring barricade stability and the long-term performance of CPB structures. This study investigates the development of PWP in CPB under realistic deep mine conditions, particularly focusing on multiaxial stress loading and drainage availability. A novel multiaxial stress curing and monitoring apparatus was employed to simulate these coupled conditions and comprehensively capture the evolution of both positive and negative PWP within CPB throughout a 28-day curing period. Although the apparatus can impose field-like temperature histories and drainage boundaries, the present tests fix temperature to isolate mechanical and drainage effects. Groundwater inflow is not explicitly simulated; instead, controlled drainage boundaries are employed to bracket typical deep-mine backfill drainage conditions. Results indicate that horizontal rockwall closure stress significantly amplifies the magnitude and prolongs the duration of positive PWP by actively confining and entrapping pore water, resulting in notably higher peak PWP values and stress-induced pore pressure coefficients (C<sub>n</sub>) compared to CPB subjected solely to vertical stress. Practically, this means that even at the same filling rate, CPB material subjected to additional horizontal rockwall closure in deep mines can experience significantly higher positive PWP, thereby increasing the load exerted on barricades at early curing stages and elevating the risk of barricade failure. As curing progresses and positive PWP dissipates, it eventually drops below zero, leading to the development of negative PWP (suction). To interpret this suction development, the study adopts the concept of the air-water interface (meniscus) from unsaturated soil mechanics, illustrating how curing-induced changes in pore structure influence meniscus curvature and consequently affect suction magnitude. Horizontal closure stress promotes consolidation and densification of CPB – supported by mercury intrusion porosimetry (MIP) and thermogravimetric (TG) analyses – which reduces pore size and enhances pore water consumption. This densification leads to smaller pore sizes, generating menisci with smaller radii of curvature, thereby increasing suction (negative PWP). However, rapid and high-magnitude horizontal stresses (rockwall closure 2) at later curing stages can induce a “resaturation effect,” partially reversing this beneficial suction increase, whereas moderate horizontal closure stress (rockwall closure 1) allows stable suction development throughout curing. Furthermore, introducing drainage under multiaxial stress conditions significantly mitigates elevated positive PWP by facilitating rapid di","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cellulose nanofibers synergizing with tannic acid enables high-performance grouting in deep geothermal environments","authors":"Minhui Sun, Jiangyu Wu, Hongpu Kang, Qian Yin, Hao Zhang, Hai Pu, Dan Ma","doi":"10.1016/j.cemconcomp.2025.106350","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106350","url":null,"abstract":"Achieving ultrahigh-flow grouting materials with sustained mechanical performance under deep geothermal conditions remains critical in underground engineering. This study explores a cellulose nanofibers -tannic acid synergistic modification method to enhance grout performance, overcoming the 'fast setting and low strength' dilemma in geothermal environments.. Through multi-scale characterization (fluidity,setting time,compression, hydration heat, XRD, FTIR, TG/DTG, MIP, SEM-EDS, Zeta Potential , Particle Size Distribution), the effects of cellulose nanofibers dosage, temperature, and curing age on the working performance, mechanical properties, composition and microstructure were investigated.The results show that the cellulose nanofibers synergizing tannic acid significantly inhibit the performance deterioration caused by high temperature. The interaction between tannic acid and hydroxyl groups on cellulose nanofibers constructs hydrogen-bond network, enhancing initial fluidity by 50% (up to 252 mm) and 7-day compressive strength by 19.24% (up to 31.5 MPa). And this network structure reduces the water loss rate caused by high temperature, the hydration products are oriented in 1μm pores through heterogeneous nucleation site regulation and bridging effect to form gradient densification structure. The optimal dosage of cellulose nanofibers to tannic acid (0.1% CNFs + 0.18% TA) was determined by multi-objective co-optimization. Based on the validation of ASTM C1437 standard, the dosage resulted in a 33.4% increase in 60-minute fluidity and a 26.41% enhancement in 7-day mechanical properties of the grouting material. The research results provide a theoretical paradigm and industrial benchmark for the design of grouting materials in deep engineering, which can support the demand of engineering practice under high temperature and high pressure environments.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbonation-Activated Microstructural Refinement in GUL-GGBFS Blended Mortars: Shrinkage Mitigation and Strength Enhancement","authors":"Lei Ma, Daman K. Panesar","doi":"10.1016/j.cemconcomp.2025.106347","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106347","url":null,"abstract":"Carbonation curing, a potential method for achieving carbon-neutral concrete, enables cement-based materials to react with CO₂ and form stable carbonates. The objective of this study is to investigate the volume stability and microstructural changes of mortars exposed to drying (0.04% ± 0.001%) and accelerated carbonation (3% ± 0.5%). Five mixtures with general use limestone cement (GUL) and up to 80% ground granulated blast furnace slag (GGBFS) replacement were analyzed. Macroscopic properties, including compressive strength and shrinkage, were assessed up to 174 days. Mineralogical composition was analyzed via X-ray diffraction (XRD) and thermogravimetric analysis (TG). Pore structures were investigated using X-ray computed tomography (XCT) and dynamic vapor sorption (DVS). Results indicate that 80% GGBFS reduced 28-day compressive strength by 65.6% compared to 0% GGBFS under drying, while accelerated carbonation compensates for this reduction, increasing 46.9% compressive strength as GGBFS rises from 0% to 40% due to pore refinement from calcite and dolomite formation. Accelerated carbonation increases shrinkage by 49.2% in specimens with 0% GGBFS, whereas incorporating over 40% GGBFS reduced shrinkage by 20.3%. Although carbonation densified the pore structure and limited CO₂ ingress, specimens with GGBFS showed higher carbonation rates attributed to the lower Ca(OH)₂ from cement dilution and pozzolanic reactions. XCT further revealed crack in high-GGBFS mixes (60% and 80%) after carbonation, which critically compromised their strength and durability. This study demonstrates that moderate GGBFS replacement combined with carbonation curing can improve strength and shrinkage resistance while advancing carbon-neutral construction.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiscale Architecturing of High-Performance Passive Daytime Radiative Cooling Cementitious Composite","authors":"Liao Huang, Yaoxin Hu, Wei Wang, Anthony S.R. Chesman, Felipe Basquiroto de Souza, Kwesi Sagoe-Crentsil, Wenhui Duan","doi":"10.1016/j.cemconcomp.2025.106346","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106346","url":null,"abstract":"High energy consumption in buildings is increasingly driven by the demand for electrical cooling, particularly in urban areas affected by the urban heat island (UHI) effect. This phenomenon, exacerbated by conventional construction materials like concrete that absorb and retain heat, increases cooling loads and strains energy systems. Energy-free passive daytime radiative cooling (PDRC) technology presents an appealing solution by reflecting solar radiation and emitting heat into the cold universe, with recent polymer composite designs demonstrating potential for achieving high PDRC performances. However, the integration of high-performance PDRC polymer materials in building applications is challenging, primarily due to inadequate mechanical strength and compatibility with construction materials. Here, we combine a cement-based honeycomb architecture with nano-engineered porous polymer to obtain lightweight PDRC-cement composites that deliver both efficient energy-free cooling performance and high mechanical strength. Specifically, the innovative material design achieves excellent solar reflectance (94.9%) and high longwave infrared emission (97.0%), enabling sub-ambient temperature reduction of ∼9.6 °C and a measured net cooling power of ∼196.8 W/m² at midday under an ambient air temperature of ∼65 °C – significantly outperforming state-of-the-art radiative cooling construction materials while maintaining high specific compressive strength (0.013 MPa·m³/kg). With potential for incorporation into energy-efficient building envelopes, this design approach presents a promising strategy for effective building energy savings and heat island mitigation.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Time-Domain Characterization of the Pore Structure in Ultra-High Performance Concrete with Partial Substitution of Calcium Sulfoaluminate Cements","authors":"Muhammad Haseeb Zaheer, Namkon Lee","doi":"10.1016/j.cemconcomp.2025.106345","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106345","url":null,"abstract":"Moisture mobility is vital for the durability of ultra-high performance concrete (UHPC), yet the understanding of its evolution during hydration remains limited. This study applies time-domain ¹H NMR relaxometry, utilizing both solid echo (QE) and Carr-Purcell-Meiboom-Gill (CPMG) sequences, to quantitatively track the moisture dynamics in UHPC incorporating calcium sulfoaluminate (CSA) cement. This approach enables simultaneous quantification of mobile and chemically bound water, and provides nanoscale resolution of the evolving pore network. Solid echo measurements revealed a sharp increase in chemically combined water within the first hour, indicating rapid ettringite formation. The CPMG measurements showed a rapid increase in gel pores within the first hour, reflecting accelerated C₃S hydration. In CSA-UHPC, gel pores became the dominant pore type within just 4 hours, compared to 20 hours in conventional UHPC. An increase in interlayer pores was also observed over the same period, indicative of densification of the C–S–H structure. Furthermore, the addition of CSA cement led to a refined pore structure with reduced gel pore size, while maintaining comparable compressive strength. These trends, supported by isothermal calorimetry, X-ray diffraction, thermogravimetric analysis, and mercury intrusion porosimetry, validate the findings from ¹H NMR. The integrated findings contribute to a better understanding of the changes in interlayer pore, gel pore, and chemically bound water, as well as the associated moisture dynamics and pore structure development in CSA-UHPC.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"537 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Bonding Quality of Cement-Casing Interfacial Transition Zone Based on Acoustic Impedance Testing: Influence of Microstructural Characteristics","authors":"YuHao Wen, Haizhi Zhang, Linsong Liu, Zhenyu Tao, Huiting Liu, Renzhou Meng, Yi Hao, Zhengrong Zhang, Ziyue Wang","doi":"10.1016/j.cemconcomp.2025.106329","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106329","url":null,"abstract":"Investigating the interfacial transition zone (ITZ) between cement and casing, along with its bonding quality, holds significant importance for enhancing downhole cementing integrity. This study employed acoustic impedance testing to characterize interfacial bonding quality, while utilizing X-ray diffraction (XRD), scanning electron microscopy (SEM), and backscattered electron spectroscopy-energy dispersive spectroscopy (BSE-EDS) to elucidate cement-casing interfacial bonding mechanisms. The research methodology for ITZ microstructure analysis was optimized, establishing intrinsic correlations between ITZ microstructural characteristics and interfacial bonding performance. Results demonstrate that elevated free water content at the cement-casing interface promotes cement clinker accumulation within ITZ, forming a porous microstructure that compromises interfacial bonding. Enhanced hydration reaction efficiency and controlled cement sheath deformation characteristics effectively improved interfacial bonding quality, with gel phase content exhibiting a more pronounced strengthening effect than volumetric deformation factors. Specifically, gel phase content showed a negative correlation with ITZ thickness - increased gel phase proportion reduced ITZ thickness to 10-30 μm, achieving optimal interfacial bonding performance.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upcycling coal gangue coarse aggregates into 3D printed concrete: Multi-scale mechanisms of fracture behaviour","authors":"Shao-bo Geng, Chen Zhang, Hui Zhang, Lu Hai, Bo-Tao Huang, Yun-shan Han, Chuan-xin Du, Yu-jie Huang","doi":"10.1016/j.cemconcomp.2025.106275","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106275","url":null,"abstract":"The advent of 3D printed concrete (3DPC) has transformed construction industrialization, especially in the context of intelligent construction. Nevertheless, conventional cement-based printable materials, mainly composed of extrusion-adapted mortar without coarse aggregates, exhibit low stiffness, high shrinkage cracking potential, and excessive cement dependence, compromising sustainability and increasing carbon footprints. This study introduces the first use of coal gangue as a sustainable coarse aggregate in 3D printed coal gangue concrete (3DP-CC), offering an innovative strategy for upcycling coal mining waste into printable construction materials. We systematically perform uniaxial compression, three-point bending, interlayer bonding tests, and micro X-ray CT to evaluate the multi-scale mechanical behaviour of 3DP-CC with varying coal gangue contents. Key findings include: (1) Pore structure evolves with coal gangue content, with total porosity first decreasing (to 1.8% at 10% content) then increasing (to 3.4% at 40% content), driven by aggregate skeleton and fine aggregate filling; (2) 3DP-CC’s compressive strength anisotropy is reduced compared to printed mortar due to aggregate interlocking, whereas flexural strength anisotropy increases as a result of pore accumulation and weak interlayers; at equal coarse aggregate content, 3DP-CC exhibits lower compressive anisotropy than printed natural aggregate concrete; (3) Compressive and flexural strengths increase initially and peak at 10%–20% coal gangue content, with values in all directions surpassing those of printed concrete with 40% natural aggregate. This work quantifies relationships between coal gangue content, structural anisotropy, and fracture resistance, offering actionable insights for industrial upcycling of coal wastes and addressing key challenges in eco-friendly 3D concrete printing.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiaxial Shear Performance of Coarse-Aggregate ECC: Damage Evolution and Interfacial Characteristics","authors":"Lei Xie, Xinjian Sun, Zhenpeng Yu, Zetian Zhang, Xiaoli Xu, Kequan Yu","doi":"10.1016/j.cemconcomp.2025.106280","DOIUrl":"https://doi.org/10.1016/j.cemconcomp.2025.106280","url":null,"abstract":"The widespread application of engineered cementitious composites (ECC) necessitates addressing two critical challenges: excessive shrinkage deformation and prohibitive economic costs. Incorporating coarse aggregates (CAs) into ECC (CA-ECC) presents an effective solution strategy for these limitations. In civil and hydraulic engineering applications where shear-dominated failure prevails under complex loading conditions, establishing the correlation between CA content and the damage evolution characteristics as well as failure mechanisms of CA-ECC under shear stress states becomes imperative. This investigation examines the multiaxial shear performance of CA-ECC through the multiaxial shear tests considering four CA contents and five axial compression ratios. The digital image correlation technique was employed to analyze the damage evolution, complemented by microstructural characterization to elucidate the mechanisms of CA on shear performance of CA-ECC. The results indicate that increasing the CA content and axial compression ratio can both cause CA-ECC to crack prematurely, with the cracks increasing significantly. A positive correlation exists between CA content and shear strength enhancement, peaking at 36.91% improvement with 30% CA content. Notably, maximum peak shear displacement (33.86% increase) was achieved at 10% CA content. However, high axial compression can weaken the improving effect of CA on the shear performance of CA-ECC. Furthermore, the increase in CA content expands its interfacial transition zones, alters the fiber distribution characteristics, and consequently changes the failure mechanism of CA-ECC. Finally, a modified damage constitutive model of CA-ECC was proposed in this article, which was demonstrated to accurately predict the shear mechanical properties of CA-ECC.","PeriodicalId":519419,"journal":{"name":"Cement and Concrete Composites","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144792853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}