干旱区生态环境知识资源中心(Arid): Effect of Portland cement as a filler in hot-mix asphalt in hot regions

Arid

DOI	10.1016/j.jobe.2019.101036
	Effect of Portland cement as a filler in hot-mix asphalt in hot regions
	Guha, Aioub H.1,2; Assaf, Gabriel J.1
通讯作者	Guha, Aioub H.
来源期刊	JOURNAL OF BUILDING ENGINEERING
ISSN	2352-7102
出版年	2020
卷号	28
英文摘要	Flexible pavement in hot regions often show significant signs of distress, like rutting and shoving. This distress is mostly caused by traffic, an inadequate viscosity of bitumen, and/or an insufficient aggregate angularity. At present, the conventional bitumen viscosity of 60/70 (B60/70) has many disadvantages in hot countries like Libya, where road-surface temperatures can reach up to 70 degrees C. This paper reports on the use of Ordinary Portland Cement (OPC) as a filler substitute to improve the rigidity of asphalt concrete mixes made with B60/70 bitumen and low-quality aggregates. This new mixture increases the pavement's stability and resistance to high temperatures. To establish the effects of OPC on the performance of asphalt mixtures in hot climates, four different percentages of OPC (0%, 2%, 4% and 6%) are used as filler substitutes in three different mixes. The performance of the three mixes are assessed using the Superpave Gyratory Compactor and the Asphalt Pavement Rutting Analyzer. Findings indicate that mixtures containing higher percentages of OPC as a filler are significantly more resistant to rutting. These experimental results show that Portland Cement Filler Asphalts (PCFA) represents a more stable alternative to conventional asphalt that also reduces thickness requirements, because of the higher resulting modulus of rigidity. This is equally important in hot rural areas like those found in Libya, where they have very few quarries and aggregates are very costly to transport.
英文关键词	Portland cement Hot mix asphalt Shoving Rutting Gyratory compactor
类型	Article
语种	英语
国家	Canada
收录类别	SCI-E
WOS记录号	WOS:000513823200034
WOS关键词	DESERT
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS研究方向	Construction & Building Technology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314908
作者单位	1.Univ Quebec, Dept Civil Engn & Construct, Ecole Technol Super, 1100 Rue Notre Dame Ouest, Montreal, PQ H3C, Canada; 2.Tech Fac Struct Engn Mesllata Libya, Dept Construct, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Guha, Aioub H.,Assaf, Gabriel J.. Effect of Portland cement as a filler in hot-mix asphalt in hot regions[J],2020,28.
APA	Guha, Aioub H.,&Assaf, Gabriel J..(2020).Effect of Portland cement as a filler in hot-mix asphalt in hot regions.JOURNAL OF BUILDING ENGINEERING,28.
MLA	Guha, Aioub H.,et al."Effect of Portland cement as a filler in hot-mix asphalt in hot regions".JOURNAL OF BUILDING ENGINEERING 28(2020).