干旱区生态环境知识资源中心(Arid): Improving the properties of hot applied crack sealant by utilizing Pre-activated Crumb Rubber (PCR)

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DOI	10.1016/j.conbuildmat.2024.135512
	Improving the properties of hot applied crack sealant by utilizing Pre-activated Crumb Rubber (PCR)
	Karam, Jolina; Zalghout, Ali; El Tallis, Abdel Rahman; Kaloush, Kamil
通讯作者	Karam, J
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2024
卷号	419
英文摘要	Crack sealing stands as a cost-effective pavement maintenance practice and has a typical life span of 1-3 years. To enhance sealants' longevity and optimize their performance, evaluating potential material modification, particularly in hot and arid regions, is of interest. In this research study, a comprehensive testing protocol was designed to address prevalent failure modes observed in asphalt crack sealants such as adhesion, cohesion, pumping, and settlement failures. The primary modification involved the incorporation of Pre-activated Crumb Rubber (PCR) at varying concentrations (2.5%, 5%, and 7.5%) by weight of the sealant. Testing was conducted on both unaged and short-term aged sealant samples with different PCR contents. The findings revealed promising improvements associated with PCR concentrations up to 5%, manifesting as enhanced elasticity, toughness, tenacity, flexibility at low temperatures, and resistance to shear thinning at high temperatures. For a content of 5% PCR, the results show a decrease of the non-recoverable creep compliance (Jnr) of 60% for 0.1kPa and 81% for 3.2kPa loading conditions when compared to the control sealant. Furthermore, an increase in toughness and tenacity of 72% and 25% respectively was measured for the aged conditions. In terms of shear thinning resistance, the coefficient P increased from 0.75 to 0.83 indicating a greater resistance to tracking. The results indicated favorable trends with the addition of the modifier, yielding potential improved performance in the field.
英文关键词	Crack sealing Pre-Activated Crumb Rubber Recovery Fracture Temperature Susceptibility Toughness and Tenacity Shear Thinning Aging
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001199459200001
WOS关键词	MODIFIED ASPHALT ; PERFORMANCE ; FIELD
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403263
推荐引用方式 GB/T 7714	Karam, Jolina,Zalghout, Ali,El Tallis, Abdel Rahman,et al. Improving the properties of hot applied crack sealant by utilizing Pre-activated Crumb Rubber (PCR)[J],2024,419.
APA	Karam, Jolina,Zalghout, Ali,El Tallis, Abdel Rahman,&Kaloush, Kamil.(2024).Improving the properties of hot applied crack sealant by utilizing Pre-activated Crumb Rubber (PCR).CONSTRUCTION AND BUILDING MATERIALS,419.
MLA	Karam, Jolina,et al."Improving the properties of hot applied crack sealant by utilizing Pre-activated Crumb Rubber (PCR)".CONSTRUCTION AND BUILDING MATERIALS 419(2024).