干旱区生态环境知识资源中心(Arid): Performance evaluation of asphalt concrete mixes under varying replacement percentages of natural sand

Arid

DOI	10.1016/j.rineng.2020.100131
	Performance evaluation of asphalt concrete mixes under varying replacement percentages of natural sand
	Albayati, Amjad H.; Abdulsattar, Harith
通讯作者	Albayati, AH (corresponding author), Univ Baghdad, Dept Civil Engn, Baghdad, Iraq.
来源期刊	RESULTS IN ENGINEERING
ISSN	2590-1230
出版年	2020
卷号	7
英文摘要	Frequently, load associated mode of failure, rutting and fatigue, are the main failure types found in some newly constructed roads within Baghdad, the capital of Iraq, and some suburban areas. The use of excessive amount of natural sand in asphalt concrete mixes which is attractive to local contractors could be one of the possible causes to the lack of strength properties of the mixes resulting in frustration in the pavement performance. In this study, the performance properties of asphalt concrete mixes with two natural sand types, desert and river sands, were evaluated. Moreover, five replacement rates of 0, 25, 50, 75, and 100% by weight of the fine aggregate finer than 4.75 mm were used. The performance properties including moisture susceptibility, resilient modulus, permanent deformation, and fatigue characteristics were evaluated using indirect tensile strength, uniaxial repeated loading and repeated flexural beam tests. Also, as a part of the research objective, the laboratory tests result were used to predict the performance using VESYS computer software. Results showed that mixes with high natural sand content (NSC) are more susceptible to moisture damage and rutting, lower resilient modulus and some improvement in fatigue resistance. Based on the obtained results, the necessity has rise to revise the current local specification for asphalt concrete which specifies the limits of natural sand content in the mixes of wearing and binder courses with 25% whereas for base course mixes no limit exist yet.
英文关键词	Natural sand Moisture susceptibility Permanent deformation Fatigue
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000659385200004
WOS关键词	RECYCLED CONCRETE ; AGGREGATE ; RESISTANCE ; MIXTURES
WOS类目	Engineering, Multidisciplinary
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352674
作者单位	[Albayati, Amjad H.] Univ Baghdad, Dept Civil Engn, Baghdad, Iraq; [Abdulsattar, Harith] Oregon State Univ, Dept Civil & Construct Engn, Corvallis, OR USA
推荐引用方式 GB/T 7714	Albayati, Amjad H.,Abdulsattar, Harith. Performance evaluation of asphalt concrete mixes under varying replacement percentages of natural sand[J],2020,7.
APA	Albayati, Amjad H.,&Abdulsattar, Harith.(2020).Performance evaluation of asphalt concrete mixes under varying replacement percentages of natural sand.RESULTS IN ENGINEERING,7.
MLA	Albayati, Amjad H.,et al."Performance evaluation of asphalt concrete mixes under varying replacement percentages of natural sand".RESULTS IN ENGINEERING 7(2020).