Drying of Porous Asphalt Concrete Investigated by X-Ray Computed Tomography

被引：25

作者：

Jerjen, I. ^{[1
,2
,3
]}

Poulikakos, L. D. ^{[1
]}

Plamondon, M. ^{[1
]}

Schuetz, Ph. ^{[1
,4
]}

Luethi, Th. ^{[1
]}

Flisch, A. ^{[1
]}

机构：

[1] Empa, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland

[2] ETH, CH-8092 Zurich, Switzerland

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Lucerne Univ Appl Sci & Arts, CH-6048 Horw, Switzerland

来源：

PROCEEDINGS OF THE 10TH WORLD CONFERENCE ON NEUTRON RADIOGRAPHY (WCNR-10) | 2015年 / 69卷

关键词：

X-ray computed tomography; porous asphalt concrete; water evaporation; water lids; NEUTRON-RADIOGRAPHY;

D O I：

10.1016/j.phpro.2015.07.063

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Porous asphalt concrete is composed of aggregates, a bituminous binder and air voids which can form a complex network. Because rain water can easily drain through this network of voids, porous asphalt concrete is often used for improving the security of highways. However, porous asphalt concrete is often deteriorating fast due to its large contact area with environmental agents. A quantitative determination of the influence of rain water on the aging of porous asphalt concrete requires an understanding of water drainage and evaporation in the material. In this paper, the water evaporation rate in a sample of porous asphalt concrete was investigated by means of X-ray micro computed tomography. Discontinuities in the evaporation rate were observed. A qualitative inspection of the pore network allowed tentatively linking sudden acceleration of evaporation to the disappearance of water lids which were clogging pores. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：451 / 456

页数：6

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