{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T12:30:48Z","timestamp":1768825848281,"version":"3.49.0"},"reference-count":53,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2025,6,26]],"date-time":"2025-06-26T00:00:00Z","timestamp":1750896000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Science and Technology Research Project of the Chongqing Municipal Education Commission","award":["KJQN202200735"],"award-info":[{"award-number":["KJQN202200735"]}]},{"name":"Science and Technology Research Project of the Chongqing Municipal Education Commission","award":["CSTB2022NSCQ-MSX1469"],"award-info":[{"award-number":["CSTB2022NSCQ-MSX1469"]}]},{"name":"General Project of the Chongqing Natural Science Foundation","award":["KJQN202200735"],"award-info":[{"award-number":["KJQN202200735"]}]},{"name":"General Project of the Chongqing Natural Science Foundation","award":["CSTB2022NSCQ-MSX1469"],"award-info":[{"award-number":["CSTB2022NSCQ-MSX1469"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>With the increase in heavy-load traffic and the growing frequency of extreme weather events, traditional rock aggregates, due to poor morphological stability, are unable to meet the performance requirements of high-grade asphalt pavements in complex environments. Most existing research on metal reinforcement focuses on fiber forms. This study innovatively introduces L-shaped multi-faceted metal aggregates (LFMAs). Through surface energy analysis and tests such as the Marshall test, rutting test, water immersion Marshall test, and freeze\u2013thaw splitting test, the effects of the dosage and particle size of LFMAs on the performance of asphalt mixtures are explored. The results show that LFMAs can form an effective bond with SBS modified asphalt, improving the high-temperature stability and low-temperature crack resistance of asphalt mixtures. Under both water immersion and freeze\u2013thaw conditions, the resistance of asphalt mixtures to water damage decreases with the increase in the dosage of metal aggregates. This research expands the application of three-dimensional metal aggregates, breaks through the limitations of fiber-based materials, and provides a new direction for the development of high-performance asphalt mixtures.<\/jats:p>","DOI":"10.3390\/ma18133039","type":"journal-article","created":{"date-parts":[[2025,6,26]],"date-time":"2025-06-26T11:15:23Z","timestamp":1750936523000},"page":"3039","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Effect of Incorporating L-Shaped Folded Metal Aggregates on the Performance of Asphalt Mixtures"],"prefix":"10.3390","volume":"18","author":[{"given":"Qingguo","family":"Yang","sequence":"first","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kelin","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Longfei","family":"Guan","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6119-6041","authenticated-orcid":false,"given":"Ya","family":"Li","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunhao","family":"Li","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wujing","family":"Yin","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqiong 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"158171","DOI":"10.1016\/j.apsusc.2023.158171","article-title":"Investigating the deterioration mechanism of adhesion between asphalt and aggregate interface under acid rain erosion","volume":"639","author":"Meng","year":"2023","journal-title":"Appl. Surf. Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"137386","DOI":"10.1016\/j.conbuildmat.2024.137386","article-title":"Effect of asphalt mixture gradation characteristics on long-term skid resistance under high temperature and heavy load","volume":"441","author":"Yun","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"121989","DOI":"10.1016\/j.conbuildmat.2020.121989","article-title":"Characterization and evaluation of morphological features for aggregate in asphalt mixture: A review","volume":"273","author":"Gong","year":"2021","journal-title":"Constr. Build. Mater."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"134058","DOI":"10.1016\/j.conbuildmat.2023.134058","article-title":"Study on the shear strength of asphalt mixture by discrete element modeling with coarse aggregate morphology","volume":"409","author":"Zou","year":"2023","journal-title":"Constr. Build. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"472","DOI":"10.1016\/j.conbuildmat.2018.06.170","article-title":"Effects of coarse aggregate angularity on the microstructure of asphalt mixture","volume":"183","author":"Gao","year":"2018","journal-title":"Constr. Build. Mater."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"120220","DOI":"10.1016\/j.conbuildmat.2020.120220","article-title":"Effect of aggregate morphologies and compaction methods on the skeleton structures in asphalt mixtures","volume":"263","author":"Wang","year":"2020","journal-title":"Constr. Build. Mater."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"123599","DOI":"10.1016\/j.conbuildmat.2021.123599","article-title":"Study on the influence of aggregate strength and shape on the performance of asphalt mixture","volume":"294","author":"Hassan","year":"2021","journal-title":"Constr. Build. Mater."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Cheng, Y.C., Wang, W.S., Tao, J.L., Xu, M., Xu, X.L., Ma, G.R., and Wang, S.R. (2018). Influence Analysis and Optimization for Aggregate Morphological Characteristics on High- and Low-Temperature Viscoelasticity of Asphalt Mixtures. Materials, 11.","DOI":"10.3390\/ma11102034"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"137319","DOI":"10.1016\/j.conbuildmat.2024.137319","article-title":"Impact of aggregate morphology on the compression strength of asphalt mixtures during different compaction stages","volume":"439","author":"Lei","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"573","DOI":"10.1016\/j.conbuildmat.2018.06.059","article-title":"Lab assessment and discrete element modeling of asphalt mixture during compaction with elongated and flat coarse aggregates","volume":"182","author":"Gong","year":"2018","journal-title":"Constr. Build. Mater."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"474","DOI":"10.1016\/j.conbuildmat.2015.10.050","article-title":"Mechanical behavior of asphalt mixtures with different aggregate type","volume":"101","year":"2015","journal-title":"Constr. Build. Mater."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"132941","DOI":"10.1016\/j.conbuildmat.2023.132941","article-title":"Geometrical characteristics of aggregates: The influence of sphericity, angularity, and surface texture on the workability of asphalt mixtures","volume":"402","author":"Chen","year":"2023","journal-title":"Constr. Build. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"126002","DOI":"10.1016\/j.conbuildmat.2021.126002","article-title":"Influence of aggregates properties on microstructural properties and mechanical performance of asphalt mixtures","volume":"318","author":"Busang","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1016\/j.conbuildmat.2016.11.132","article-title":"Impact of particle morphology on aggregate-asphalt interface behavior","volume":"132","author":"Kuang","year":"2017","journal-title":"Constr. Build. Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"138388","DOI":"10.1016\/j.conbuildmat.2024.138388","article-title":"Enhancement mechanism of aggregate surface roughness structure on interfacial properties of asphalt mixtures","volume":"449","author":"Ge","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Sun, P., Zhang, K., Han, S., and Xiao, Y. (2022). Aggregate Geometrical Features and Their Influence on the Surface Properties of Asphalt Pavement. Materials, 15.","DOI":"10.3390\/ma15093222"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"205714","DOI":"10.1016\/j.wear.2024.205714","article-title":"Study of the surface texture evolution and friction degradation in asphalt pavements during wear process","volume":"564\u2013565","author":"Ma","year":"2025","journal-title":"Wear"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"134851","DOI":"10.1016\/j.conbuildmat.2023.134851","article-title":"Experimental investigation on wear behavior of asphalt pavement based on three-dimensional surface texture scan technology","volume":"412","author":"Zhang","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"100255","DOI":"10.1016\/j.clema.2024.100255","article-title":"A review of polymer-modified asphalt binder: Modification mechanisms and mechanical properties","volume":"12","author":"Yang","year":"2024","journal-title":"Clean. Mater."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1559","DOI":"10.1080\/14680629.2022.2092022","article-title":"State of art review on the incorporation of fibres in asphalt pavements","volume":"24","author":"Wu","year":"2023","journal-title":"Road Mater. Pavement Des."},{"key":"ref_21","first-page":"339","article-title":"Anti-rutting performance evaluation of modified asphalt binders: A review","volume":"8","author":"Li","year":"2021","journal-title":"J. Traffic Transp. Eng."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"129058","DOI":"10.1016\/j.conbuildmat.2022.129058","article-title":"Polyurethane as a modifier for road asphalt: A literature review","volume":"356","author":"Huang","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"04023435","DOI":"10.1061\/JMCEE7.MTENG-16204","article-title":"Investigation of the Adhesion Characteristics of a Novel Fast-Melting SBS-Based Modifier to Asphalt-Aggregate Systems Based on a Multiscale Approach","volume":"35","author":"Kang","year":"2023","journal-title":"J. Mater. Civ. Eng."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Hui, Y.X., Men, G.Y., Xiao, P., Tang, Q., Han, F.Y., Kang, A.H., and Wu, Z.G. (2022). Recent Advances in Basalt Fiber Reinforced Asphalt Mixture for Pavement Applications. Materials, 15.","DOI":"10.3390\/ma15196826"},{"key":"ref_25","first-page":"e01773","article-title":"Evaluation of asphalt mixture micromechanical behavior evolution in the failure process based on Discrete Element Method","volume":"18","author":"Zhu","year":"2023","journal-title":"Case Stud. Constr. Mater."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Shi, L., Yang, Z., Wang, D., Qin, X., Xiao, X., and Julius, M.K. (2019). Gradual Meso-Structural Response Behaviour of Characteristics of Asphalt Mixture Main Skeleton Subjected to Load. Appl. Sci., 9.","DOI":"10.3390\/app9122425"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1016\/j.conbuildmat.2012.04.113","article-title":"Investigation of usability of steel fibers in asphalt concrete mixtures","volume":"36","author":"Serin","year":"2012","journal-title":"Constr. Build. Mater."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"138717","DOI":"10.1016\/j.conbuildmat.2024.138717","article-title":"Investigating crack resistance and mechanisms of crack extension in high-content steel fibers reinforced hot recycled asphalt mixtures","volume":"450","author":"Nian","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"012024","DOI":"10.1088\/1755-1315\/1022\/1\/012024","article-title":"A review of steel fiber\u2019s potential use in Hot Mix Asphalt","volume":"1022","author":"Shapie","year":"2022","journal-title":"IOP Conf. Ser. Earth Environ. Sci."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"2520","DOI":"10.1016\/j.matpr.2021.05.046","article-title":"Evaluating the influence of adding steel fibers on the moisture damage and aging resistance of hot asphalt mixtures","volume":"47","author":"Alkaissi","year":"2021","journal-title":"Mater. Today Proc."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"348","DOI":"10.28991\/CEJ-2022-08-02-012","article-title":"The Effect of Adding Steel Fibers and Graphite on Mechanical and Electrical Behaviors of Asphalt Concrete","volume":"8","author":"Messaoud","year":"2022","journal-title":"Civ. Eng. J."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"124006","DOI":"10.1016\/j.conbuildmat.2021.124006","article-title":"Investigation of the fracture energy of hot mixtures asphalt incorporating metallic wastes via semi-circular bending test","volume":"300","author":"Serin","year":"2021","journal-title":"Constr. Build. Mater."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"131299","DOI":"10.1016\/j.conbuildmat.2023.131299","article-title":"Characterization and evaluation of coarse aggregate wearing morphology on mechanical properties of asphalt mixture","volume":"388","author":"Yu","year":"2023","journal-title":"Constr. Build. Mater."},{"key":"ref_34","first-page":"e03735","article-title":"Effects of coarse aggregate morphology on Asphalt mixture\u2019s flowability: Parametric and prediction study","volume":"21","author":"Ding","year":"2024","journal-title":"Case Stud. Constr. Mater."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"126532","DOI":"10.1016\/j.conbuildmat.2022.126532","article-title":"Gradation of limestone-aggregate-based porous asphalt concrete under dynamic crushing test: Composition, fragmentation and stability","volume":"323","author":"Cai","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/j.ijadhadh.2014.05.009","article-title":"Durability of asphalt mixtures: Effect of aggregate type and adhesion promoters","volume":"54","author":"Cui","year":"2014","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"117089","DOI":"10.1016\/j.conbuildmat.2019.117089","article-title":"Evaluation of asphalt and asphalt mixtures\u2019 water stability method under multiple freeze-thaw cycles","volume":"228","author":"Wu","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"116","DOI":"10.1016\/j.coldregions.2010.02.003","article-title":"Determination of the fatigue-cracking resistance of asphalt concrete mixtures at low temperatures","volume":"61","author":"Mun","year":"2010","journal-title":"Cold Reg. Sci. Technol."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"138352","DOI":"10.1016\/j.conbuildmat.2024.138352","article-title":"Investigation of fracture failure and water damage behavior of asphalt mixtures and their correlation with asphalt-aggregate bonding performance","volume":"449","author":"Huang","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1215","DOI":"10.1016\/j.conbuildmat.2017.07.164","article-title":"Test evaluation of rutting performance indicators of asphalt mixtures","volume":"155","author":"Javilla","year":"2017","journal-title":"Constr. Build. Mater."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"138195","DOI":"10.1016\/j.conbuildmat.2024.138195","article-title":"A multiscale investigation on asphalt surface free energy with different aged-fresh asphalt mixing ratios utilizing molecular dynamics simulation and contact angle test","volume":"448","author":"Sun","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"120006","DOI":"10.1016\/j.conbuildmat.2020.120006","article-title":"Adhesion property of bituminous crack sealants to different asphalt mixtures based on surface energy theory","volume":"261","author":"Sun","year":"2020","journal-title":"Constr. Build. Mater."},{"key":"ref_43","unstructured":"(2011). Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering (Standard No. JTG E20-2011)."},{"key":"ref_44","unstructured":"(2005). Test Methods of Aggregate for Highway Engineering (Standard No. JTG E42-2005)."},{"key":"ref_45","unstructured":"(2004). Technical Specifications for Construction of Highway Asphalt Pavements (Standard No. JTG F40-2004)."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"949","DOI":"10.1016\/j.conbuildmat.2017.10.079","article-title":"Evaluating suitability of energy efficient and anti-stripping additives for polymer and Polyphosphoric acid modified asphalt binder using surface free energy approach","volume":"158","author":"Singh","year":"2018","journal-title":"Constr. Build. Mater."},{"key":"ref_47","first-page":"e03753","article-title":"Marshall and Balanced mix design in determining the asphalt content for hot mix asphalt mixture: A comparative study","volume":"21","author":"Le","year":"2024","journal-title":"Case Stud. Constr. Mater."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"286","DOI":"10.1016\/j.jallcom.2015.01.175","article-title":"Salt spray corrosion and electrochemical corrosion properties of anodic oxide film on 7475 aluminum alloy","volume":"632","author":"Dejun","year":"2015","journal-title":"J. Alloys Compd."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"112646","DOI":"10.1016\/j.corsci.2024.112646","article-title":"Boosting corrosion resistance of environmental barrier coatings through surface aluminum modification against molten salts","volume":"244","author":"Dong","year":"2025","journal-title":"Corros. Sci."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"590","DOI":"10.1016\/j.conbuildmat.2019.02.094","article-title":"Experimental investigation on bonding property of asphalt-aggregate interface under the actions of salt immersion and freeze-thaw cycles","volume":"206","author":"Guo","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"138362","DOI":"10.1016\/j.conbuildmat.2024.138362","article-title":"Microwave self-healing characteristics of the internal voids in steel slag asphalt mixture subjected to salt-freeze-thaw cycles","volume":"449","author":"Wang","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"141409","DOI":"10.1016\/j.conbuildmat.2025.141409","article-title":"Study on deterioration mechanisms of steel slag asphalt concrete subjected to coupled salt freeze-thaw and cyclic preloading","volume":"479","author":"Yu","year":"2025","journal-title":"Constr. Build. Mater."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"125655","DOI":"10.1016\/j.conbuildmat.2021.125655","article-title":"Laboratory investigation on road performances of asphalt mixtures using steel slag and granite as aggregate","volume":"315","author":"Zhao","year":"2022","journal-title":"Constr. 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