Thermal-moisture dynamics of embankments with asphalt pavement in permafrost regions of central Tibetan Plateau (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Thermal-moisture dynamics of embankments with asphalt pavement in permafrost regions of central Tibetan Plateau (SCI)
	Wen Z.; Zhang M. L.; Ma W.; Wu Q. B.; Niu F. J.; Yu Q. H.; Fan Z. S.; Sun Z. Z.
刊名	European Journal of Environmental and Civil Engineering
	2015
卷号	19 期号:4 页码:387-399
英文摘要	Subsurface moisture content is one of the critical factors that control the thermal dynamics of embankments. However, information on the subsurface moisture movement and distribution in embankments is still limited. To better understand the coupled water and heat transport within embankments, subsurface temperature and moisture of an asphalt pavement highway were extensively measured from 2009 to 2011. Collected data indicate that pure heat conduction is the overall main mechanism of heat transport in the embankment and heat convection plays a relatively unimportant role in heat transport. The results also indicate that subsurface moisture and temperature dynamics in the asphalt layer is strongly related to the rainfall events, while the subsurface moisture content below the road base course maintains relatively constant. Rainfall in summer leads to rapid cooling of the subsurface soil. Our results suggest that frequent and small rainfall events favour the thermal stability of the embankment due to the loss of latent heat of water evaporation. Moisture migration during freezing still occurred in the gravel fill and the water infiltrated into the active layer during thawing period. Freezing-induced water migration may result in the increase in water content of the embankment and the decrease in compactness of gravel fill.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27508]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Wen Z.,Zhang M. L.,Ma W.,et al. Thermal-moisture dynamics of embankments with asphalt pavement in permafrost regions of central Tibetan Plateau (SCI)[J]. European Journal of Environmental and Civil Engineering,2015,19(4):387-399.
APA	Wen Z..,Zhang M. L..,Ma W..,Wu Q. B..,Niu F. J..,...&Sun Z. Z..(2015).Thermal-moisture dynamics of embankments with asphalt pavement in permafrost regions of central Tibetan Plateau (SCI).European Journal of Environmental and Civil Engineering,19(4),387-399.
MLA	Wen Z.,et al."Thermal-moisture dynamics of embankments with asphalt pavement in permafrost regions of central Tibetan Plateau (SCI)".European Journal of Environmental and Civil Engineering 19.4(2015):387-399.