Materials and Structures最新文献_第2页

Comparative on the regulation mechanism of recycled aggregates on the thermal-mechanical properties of concrete and application optimization 再生骨料对混凝土热力学性能调节机理的比较及应用优化

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-05-01 DOI: 10.1617/s11527-026-03111-7

Dayang Wang, Yongcheng Ji, Chenxuan Lu, Shuai Wang, Yizhen Li, Yanmin Jia

{"title":"Comparative on the regulation mechanism of recycled aggregates on the thermal-mechanical properties of concrete and application optimization","authors":"Dayang Wang, Yongcheng Ji, Chenxuan Lu, Shuai Wang, Yizhen Li, Yanmin Jia","doi":"10.1617/s11527-026-03111-7","DOIUrl":"10.1617/s11527-026-03111-7","url":null,"abstract":"<div><p>This study investigates the feasibility of using recycled concrete aggregate (RCA) and recycled asphalt pavement aggregate (RAA) in mass concrete by evaluating their thermal and mechanical properties. The effects of recycled aggregate (RA) content and water-cement ratio (W/C) on mechanical properties and thermal conductivity. The results showed that, compared with the control group, replacing natural aggregate with RCA reduced concrete compressive strength by 14.23–23.89%, whereas using RAA led to a more pronounced reduction of 42.86–48.41%. Thermal conductivity tests revealed that as the RA content increased, the thermal conductivity of both materials decreased significantly. Notably, RAA concrete exhibited a maximum reduction in thermal conductivity of 30.8%, demonstrating superior thermal insulation performance. By establishing a four-phase model comprising aggregate, old mortar/old asphalt, new mortar, and the interfacial transition zone (ITZ), the study revealed the evolution path and mechanistic differences from microcrack initiation to macroscopic failure. Finite-element thermal-conduction simulations further indicated that as the RAA content increased from 0 to 100%, the heat flow field gradually transitioned from a highly turbulent state to a more uniform distribution. Finally, the ideal point method was employed to determine optimal mix proportions for recycled aggregate concrete (RAC) satisfying three different compressive strength requirements, with comprehensive consideration of mechanical properties, thermal conductivity, carbon emissions, and cost-effectiveness.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effect of waste glass and magnesium oxide on quartz sand autoclaved material: strength, hydration products and microstructure 废玻璃和氧化镁对石英砂蒸压材料的协同作用：强度、水化产物和微观结构

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-30 DOI: 10.1617/s11527-026-03085-6

Gelong Xu, Jiaqi Du, Yaomin Gao, Qing Tian, Jiwei Cai, Mengzhen Zhang, Xinyuan Li

{"title":"Synergistic effect of waste glass and magnesium oxide on quartz sand autoclaved material: strength, hydration products and microstructure","authors":"Gelong Xu, Jiaqi Du, Yaomin Gao, Qing Tian, Jiwei Cai, Mengzhen Zhang, Xinyuan Li","doi":"10.1617/s11527-026-03085-6","DOIUrl":"10.1617/s11527-026-03085-6","url":null,"abstract":"<div><p>This study utilises ultra-fine sand from the Yellow River sediment in the preparation of autoclaved materials. To address the issue of low reactivity in silica sand, waste glass and MgO are employed as modifiers to enhance the strength of autoclaved materials. Multiple characterisation methods are used to illustrate the mechanisms in terms of hydration products and microstructure. The results demonstrate that the amorphous silica from waste glass has a positive impact on hydrothermal reactions but impedes the formation of tobermorite. Replacing 20% of quartz sand with waste glass significantly improves the compressive strength of autoclaved material by balancing the formation of hydration products and tobermorite. The incorporation of MgO further enhances the compressive strength of autoclaved material. However, its effect on tobermorite formation and morphology is negligible, and there is an increase in the porosity of the autoclaved material. The improvement effect of MgO should be primarily derived from the enhanced mechanical properties of Mg-doped hydration products. Additionally, at an excessive MgO replacement ratio, MgO cannot fully participate in the hydrothermal reaction and thus exists in the form of Mg(OH)<sub>2</sub>. In summary, combining 20% waste glass and 5% MgO yields the most favourable synergistic effect, improving the compressive strength of quartz sand autoclaved materials by over 50% and the utilisation efficiency of raw materials.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-healing mechanism and crack-filling performance of multifunctional bacteria-laden fiber (bioFiber) in cementitious matrix 胶凝基质中多功能细菌负载纤维（bioFiber）的自愈机制及裂缝填充性能

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-30 DOI: 10.1617/s11527-026-03035-2

Mohammad Houshmand, Ali Rahmaninezhad, Christopher M. Sales, Caroline L. Schauer, Ahmad Najafi, Yaghoob Amir Farnam

{"title":"Self-healing mechanism and crack-filling performance of multifunctional bacteria-laden fiber (bioFiber) in cementitious matrix","authors":"Mohammad Houshmand, Ali Rahmaninezhad, Christopher M. Sales, Caroline L. Schauer, Ahmad Najafi, Yaghoob Amir Farnam","doi":"10.1617/s11527-026-03035-2","DOIUrl":"10.1617/s11527-026-03035-2","url":null,"abstract":"<div><p>This study investigates the self-healing mechanism and crack-mitigation behavior of multifunctional bacteria-laden fibers (bioFibers) embedded in a cementitious matrix. Each bioFiber comprises a polymeric core, an endospore-laden alginate hydrogel sheath, and an outer protective shell, enabling localized microbial-induced calcium carbonate precipitation (MICCP) under wet/dry cycles. Quantitative and microstructural analyses (optical imaging, TGA, SEM, XRD) demonstrate that bioFibers achieve up to 99 ± 4% crack filling for 120–150 μm cracks and sustain measurable healing of 31 ± 7% even beyond 300 μm. Crystal phase evolution indicates a transformation from vaterite to calcite between 7 and 21 days, while TGA confirms progressive calcium carbonate formation from 15 ± 1% to 55 ± 3% over 28 days. These findings highlight bioFiber’s effective crack-filling capability, healing potential, and adequate fiber–matrix bridging effect, demonstrating its promise for robust self-healing cementitious composites.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-026-03035-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fire-induced spalling mitigation in high-strength concrete: development of a reproducible torch method and evaluation of keratin waste fibers 在高强度混凝土中减少火灾引起的剥落：可重复火炬法的发展和角蛋白废料纤维的评价

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-29 DOI: 10.1617/s11527-026-03103-7

J. P. Varas-Aros, C. Burbano-Garcia, Y. F. Silva, C. M. García-Herrera, G. Araya-Letelier

{"title":"Fire-induced spalling mitigation in high-strength concrete: development of a reproducible torch method and evaluation of keratin waste fibers","authors":"J. P. Varas-Aros, C. Burbano-Garcia, Y. F. Silva, C. M. García-Herrera, G. Araya-Letelier","doi":"10.1617/s11527-026-03103-7","DOIUrl":"10.1617/s11527-026-03103-7","url":null,"abstract":"<div><p>This study addresses two challenges in fire-induced spalling of high-strength concrete (HSC): the limited reproducibility of small-scale fire testing methods and the need for sustainable alternatives to polypropylene fibers (PPFs). An Improved Torch Method (ITM) was developed as a low-cost comparative assessment method by introducing a temperature-stabilization stage prior to specimen exposure, and validated against the Traditional Torch Method (TTM) using control and PPF-reinforced concrete mixtures. The validated ITM was then applied to evaluate keratin-based dog hair fibers (DHFs) as a sustainable alternative to PPFs. The ITM reduced the coefficient of variation (COV) of residual strength results from 19.5% (TTM) to 6.5%, demonstrating enhanced reproducibility. DHFs effectively mitigated spalling damage, achieving reductions of roughly 70% in spalling depth and more than 90% in spalled volume compared to unreinforced concrete, performing comparably to PPFs. Thermal and chemical analyses suggest that DHFs' efficacy is attributed to protein dehydration and dimensional changes between 232 and 385 °C, creating permeability pathways analogous to the melting mechanism of PPFs. These findings establish the ITM as a reliable screening tool and highlight the potential of keratin waste fibers for sustainable spalling mitigation.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of varying solution renewal regimes on calcium oxychloride damage in concrete mixtures 不同溶液更新制度对混凝土混合料中氯化钙损伤的影响

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-29 DOI: 10.1617/s11527-026-03106-4

Joey Parker, Casey Jones, Prannoy Suraneni, W. Micah Hale

{"title":"Impact of varying solution renewal regimes on calcium oxychloride damage in concrete mixtures","authors":"Joey Parker, Casey Jones, Prannoy Suraneni, W. Micah Hale","doi":"10.1617/s11527-026-03106-4","DOIUrl":"10.1617/s11527-026-03106-4","url":null,"abstract":"<div><p>This work seeks to establish a correlation between calcium oxychloride (CAOXY) formation and subsequent damage in concrete specimens exposed to varying solution storage regimes.</p><p>Across the body of literature on CAOXY impact, inconsistencies in research methods and procedures cause potential differences in observations, results, and conclusions. When conducting laboratory research to produce results relatable to the in-service experience of concrete infrastructure, inconsistencies need to be identified, investigated, and eliminated. In this work, concrete flexural beam specimens were subjected to varying storage solution regimes, that included renewing the solution every 45 days, every 90 days, and leaving the solution static for 180 days for several sets of flexural beam specimens. The results were evaluated for determination of whether static or dynamic solution renewal resulted in varying CAOXY development or deterioration. A significant effect of solution renewal on damage was not observed, most likely due to the cracks in the samples leading to high ingress regardless of solution renewal. Incorporating guidance on solution renewal procedures for laboratory testing of concrete specimens subjected to calcium chloride solution into standardized testing protocols is critical.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatiotemporal evolution patterns and modeling of phase changes in cement-based materials under CO₂-SO₂ coupled corrosion CO₂-SO₂耦合腐蚀下水泥基材料相变的时空演化模式及模拟

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-28 DOI: 10.1617/s11527-026-03105-5

Zhiyuan Cao, Ditao Niu, Yao Lv, Jie Huang

{"title":"Spatiotemporal evolution patterns and modeling of phase changes in cement-based materials under CO₂-SO₂ coupled corrosion","authors":"Zhiyuan Cao, Ditao Niu, Yao Lv, Jie Huang","doi":"10.1617/s11527-026-03105-5","DOIUrl":"10.1617/s11527-026-03105-5","url":null,"abstract":"<div><p>Industrial buildings are chronically exposed to high-temperature, high-humidity, and high-concentration acidic gases (such as CO₂ and SO₂) in a coupled corrosive environment, which accelerates the neutralization of concrete, degrades its durability, and severely compromises structural safety. This study focuses on Portland cement-based materials (paste, mortar, and concrete), simulating industrial environmental conditions (50 °C, 70% RH, 20% CO₂, and 0.9% SO₂). Through methods such as layered grinding, EDTA titration, precise carbonation measurement, XRD, thermogravimetric analysis, and microscopic morphology examination, this study systematically investigates the spatial and temporal evolution of the phase composition and content within the materials under multi-factor coupled corrosion conditions. Based on mass conservation equations for CO₂, SO₂, Ca(OH)₂, CaCO₃, and CSH, a spatiotemporal distribution model of corrosion products was established. The results indicate that carbonation dominates the initial stage of corrosion, generating CaCO₃ to fill pores. In the later stage, SO₂ decomposes carbonation products and damages the C–S–H gel, while C3A and C4AF encapsulated in the C–S–H gel dissolve into the pore solution. C4AF reacts with SO₂ to form CaSO₄, Al3⁺, and Fe3⁺. Under near-neutral pore solution conditions, Fe3⁺ precipitates as reddish-brown Fe(OH)₃. The cross-section of the corroded sample displays distinct stratified layers, including a fully sulfated zone, a partially sulfated zone, a fully carbonated zone, a partially carbonated zone, and an uncorroded zone. The numerical model accurately simulates the spatiotemporal distribution of corrosion products, providing a reliable theoretical tool and simulation foundation for the durability assessment and lifespan prediction of industrial building concrete.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable alkali-activated mortar thermal storage: mechanical and thermal benefits of raw and calcined tobacco stem ash 碱活性砂浆的可持续储热：生烟梗灰和煅烧烟梗灰的机械和热效益

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-26 DOI: 10.1617/s11527-026-03029-0

Reza Taghinasab, Seyed Sina Mousavi, Mehdi Dehestani

{"title":"Sustainable alkali-activated mortar thermal storage: mechanical and thermal benefits of raw and calcined tobacco stem ash","authors":"Reza Taghinasab, Seyed Sina Mousavi, Mehdi Dehestani","doi":"10.1617/s11527-026-03029-0","DOIUrl":"10.1617/s11527-026-03029-0","url":null,"abstract":"<div><p>Thermal Energy Storage (TES) systems, particularly those utilizing phase change materials (PCMs), are gaining traction as a solution to enhance energy efficiency. However, the fresh and mechanical properties of mortars can be significantly affected by industrial PCMs. Accordingly, the present study investigates employing tobacco stem ash as a novel and sustainable agricultural waste to replace ground granulated blast-furnace slag (GGBFS) in alkali-activated mortar mixtures at 1%, 3%, and 5%. Various mechanical and thermal properties were tested in the present study using mortar samples containing paraffin, raw tobacco stem ash, and thermally calcined tobacco stem ash. Results confirmed that using raw and calcined tobacco waste improved mechanical properties by 44.3% and 59.3% compressive strength enhancement compared to paraffin-containing mortar for raw and calcined tobacco stem ash, respectively. A comparable thermal performance was also observed. The specific heat values of mortar infused with waste tobacco stem ash ranged from 1.05 to 1.23 J/g°C for the raw type and from 1.03 to 1.19 J/g°C for the calcined type. Regarding thermal conductivity, the mortar samples containing both raw and calcined tobacco stem ash exhibited comparable characteristics, albeit with a slightly higher coefficient. Overall, the results demonstrate that raw and calcined tobacco stem ash can effectively replace industrial paraffin in the mortar, providing comparable TES performance while significantly improving mechanical properties and mitigating the strength degradation typically associated with paraffin-based PCMs.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards a test method for measuring soluble alkalis in supplementary cementitious materials 测定补充胶凝材料中可溶性碱的试验方法

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-25 DOI: 10.1617/s11527-026-03086-5

Moe Sharbaf, Zhanzhao Li, Jan Olek, Sulapha Peethamparan, Farshad Rajabipour

{"title":"Towards a test method for measuring soluble alkalis in supplementary cementitious materials","authors":"Moe Sharbaf, Zhanzhao Li, Jan Olek, Sulapha Peethamparan, Farshad Rajabipour","doi":"10.1617/s11527-026-03086-5","DOIUrl":"10.1617/s11527-026-03086-5","url":null,"abstract":"<div><p>Supplementary cementitious materials (SCMs) are often used in concrete to reduce the risk of alkali-silica reaction (ASR), primarily through alkali dilution and binding. However, the effectiveness of SCMs with high alkali content (e.g., Na<sub>2</sub>O<sub>eq</sub> > 3.0 wt.%) in ASR mitigation is of concern, as these alkalis may dissolve in concrete’s pore solution and elevate its pH. This study proposes and preliminarily evaluates a test method to quantify the soluble alkalis in SCMs. The method was applied to 14 SCMs, including natural pozzolans, coal ashes, and ground glass, to monitor their alkali release over a 180-day period. The test involves measuring soluble sodium in 1 M KOH host solution and soluble potassium in 1 M NaOH solution. Thermodynamic modeling confirmed that most released alkalis remain in solution, with minimal solid precipitation and alkali binding. Findings revealed that a significant portion of alkalis in SCMs is soluble, often exceeding the level identified by ASTM C311 Available Alkali Test.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1617/s11527-026-03086-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-early short-term creep of cement paste based on indentation method: experiments, modeling and prediction 基于压痕法的水泥浆体超早期短期蠕变：实验、建模与预测

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-25 DOI: 10.1617/s11527-026-03094-5

Dongli Wang, Hefang Zhang, Bingqiang Dong, Qingxin Zhao, Huimin Pan, Xiaochen Liu

{"title":"Ultra-early short-term creep of cement paste based on indentation method: experiments, modeling and prediction","authors":"Dongli Wang, Hefang Zhang, Bingqiang Dong, Qingxin Zhao, Huimin Pan, Xiaochen Liu","doi":"10.1617/s11527-026-03094-5","DOIUrl":"10.1617/s11527-026-03094-5","url":null,"abstract":"<div><p>Ultra-early creep is one of the important characteristics of cement-based materials, but there are few studies on the ultra-early creep test methods and prediction models of cement-based materials. Based on the principle of indentation method, this paper establishes an experimental method for ultra-early creep of cement-based materials under short-term load, and derives the calculation formula of short-term load creep of cement paste based on macro-indentation method. The test results of indentation method are compared with the creep test results obtained by traditional methods, and the feasibility of the short-term creep test method of indentation method is verified. The Burgers model is modified based on the test results of indentation method, and a creep model that can describe the ultra-early short-term creep of cement paste is obtained. The results show that the fitting degree of the model to the test data is above 90%. Using univariate nonlinear regression analysis, a creep prediction model for ultra-early cement paste at the end of 5 min loading is proposed. The verification results show that the relative error between the predicted value and the measured value is within 22%.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing fog seal treatments for mitigating cracks in asphalt mixtures using the indirect tensile test and digital image correlation 利用间接拉伸试验和数字图像相关技术评估雾封处理对减轻沥青混合料裂缝的作用

IF 3.9 3区工程技术

Materials and Structures Pub Date : 2026-04-24 DOI: 10.1617/s11527-026-03100-w

Zhiqiang Shu, Tianhao Qi, Tingyu Li, Yu Yan, Danjun Duan, Qiang Pei, Bin Lu

{"title":"Assessing fog seal treatments for mitigating cracks in asphalt mixtures using the indirect tensile test and digital image correlation","authors":"Zhiqiang Shu, Tianhao Qi, Tingyu Li, Yu Yan, Danjun Duan, Qiang Pei, Bin Lu","doi":"10.1617/s11527-026-03100-w","DOIUrl":"10.1617/s11527-026-03100-w","url":null,"abstract":"<div><p>Fog seal is an effective preventive maintenance technique that fills micro-cracks and partially restores the crack resistance of asphalt pavement. However, insufficient research has been conducted to quantify the restorative effect of fog seals on pre-cracked asphalt mixtures, thereby hindering an accurate evaluation of their engineering performance. This study developed a Digital Image Correlation (DIC) method to quantitatively assess the crack resistance recovery of asphalt mixtures treated with fog seals. Two types of asphalt mixtures (AC-13 and SMA-13) were pre-cracked using the Indirect Tensile (IDT) test and then treated with nine fog seal formulations. DIC technology was employed to capture strain fields and characteristic parameter maps, allowing the crack distribution parameter (SR) to be derived for identifying crack propagation modes. To isolate the effect of fog seal from self-healing, an untreated control group was used for baseline correction. Results showed that AC-13 exhibited more dispersed cracking than SMA-13 under the controlled crack width. The crack resistance recovery and self-healing property were negatively correlated with SR. Among nine fog seal formulations, the composite-modified formulation with 3% SBR and 8% WER yielded the highest improvement in the crack resistance. This DIC-based method provides a quantifiable basis for optimizing fog seal formulations and guiding practical pavement maintenance strategies.</p></div>","PeriodicalId":691,"journal":{"name":"Materials and Structures","volume":"59 4","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0