Xu Chen , Dongya Ren , Changfa Ai , Yuan Cao , Chuanqi Yan , Mengying Tang
{"title":"温度离析作用下沥青混凝土断裂行为的数值模拟研究","authors":"Xu Chen , Dongya Ren , Changfa Ai , Yuan Cao , Chuanqi Yan , Mengying Tang","doi":"10.1016/j.conbuildmat.2025.143866","DOIUrl":null,"url":null,"abstract":"<div><div>Existing studies on the influence of temperature segregation on the fracture behavior of asphalt pavement in cold regions are mostly based on conventional macroscopic tests, lacking research on the meso-mechanical behavior of internal particles in asphalt concrete. In view of this, this paper, based on the gradation and void ratio of standard Marshall specimens, employs the discrete element numerical simulation method to analyze the influence of temperature segregation on the meso-fracture behavior of asphalt concrete, including interparticle contact forces, displacement, and crack propagation. It is found that temperature segregation alters the mechanical behavior of asphalt concrete by restructuring its meso-spatial configuration. The main conclusions are as follows: temperature segregation reorganizes the spatial structure of meso-particles (aggregates and asphalt mortar) in asphalt concrete, thereby inducing a redistribution of interfacial contact forces among particles. This subsequently leads to coordinated changes in particle displacement and ultimately alters the crack distribution pattern. This cascading mechanical response deteriorates the low-temperature crack resistance of asphalt concrete.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"497 ","pages":"Article 143866"},"PeriodicalIF":8.0000,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical simulation study on fracture behavior of asphalt concrete under temperature segregation effect\",\"authors\":\"Xu Chen , Dongya Ren , Changfa Ai , Yuan Cao , Chuanqi Yan , Mengying Tang\",\"doi\":\"10.1016/j.conbuildmat.2025.143866\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Existing studies on the influence of temperature segregation on the fracture behavior of asphalt pavement in cold regions are mostly based on conventional macroscopic tests, lacking research on the meso-mechanical behavior of internal particles in asphalt concrete. In view of this, this paper, based on the gradation and void ratio of standard Marshall specimens, employs the discrete element numerical simulation method to analyze the influence of temperature segregation on the meso-fracture behavior of asphalt concrete, including interparticle contact forces, displacement, and crack propagation. It is found that temperature segregation alters the mechanical behavior of asphalt concrete by restructuring its meso-spatial configuration. The main conclusions are as follows: temperature segregation reorganizes the spatial structure of meso-particles (aggregates and asphalt mortar) in asphalt concrete, thereby inducing a redistribution of interfacial contact forces among particles. This subsequently leads to coordinated changes in particle displacement and ultimately alters the crack distribution pattern. This cascading mechanical response deteriorates the low-temperature crack resistance of asphalt concrete.</div></div>\",\"PeriodicalId\":288,\"journal\":{\"name\":\"Construction and Building Materials\",\"volume\":\"497 \",\"pages\":\"Article 143866\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-10-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Construction and Building Materials\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0950061825040176\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825040176","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Numerical simulation study on fracture behavior of asphalt concrete under temperature segregation effect
Existing studies on the influence of temperature segregation on the fracture behavior of asphalt pavement in cold regions are mostly based on conventional macroscopic tests, lacking research on the meso-mechanical behavior of internal particles in asphalt concrete. In view of this, this paper, based on the gradation and void ratio of standard Marshall specimens, employs the discrete element numerical simulation method to analyze the influence of temperature segregation on the meso-fracture behavior of asphalt concrete, including interparticle contact forces, displacement, and crack propagation. It is found that temperature segregation alters the mechanical behavior of asphalt concrete by restructuring its meso-spatial configuration. The main conclusions are as follows: temperature segregation reorganizes the spatial structure of meso-particles (aggregates and asphalt mortar) in asphalt concrete, thereby inducing a redistribution of interfacial contact forces among particles. This subsequently leads to coordinated changes in particle displacement and ultimately alters the crack distribution pattern. This cascading mechanical response deteriorates the low-temperature crack resistance of asphalt concrete.
期刊介绍:
Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged.
Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.