Paper Title :Influences of Water Table Elevation on Structural Performance of Flexible Pavement Matrix With Different Subgrade Soil Types
Author :Alaa M. Ali
Article Citation :Alaa M. Ali ,
(2016 ) " Influences of Water Table Elevation on Structural Performance of Flexible Pavement Matrix With Different Subgrade Soil Types " ,
International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) ,
pp. 60-64,
Volume-3,Issue-5
Abstract : Far-reaching research and many test methods have been performed and developed to investigate the effect of
water on asphalt mixtures. Most of this work was related to stripping and durability. This paper presents a study on the effect
of water table fluctuation on structural performance of flexible pavement matrix. Egypt road network covering north and
delta regions are showing severe deterioration due to water intrusion that breaks the bond between aggregates and asphalt
film causing raveling and stripping distresses. The main purpose of this paper is to identify the effect of variation in the soil
type and hydraulic characteristics besides variations in the ground water table (GWT) and conditions on the water flow
through typical flexible pavement systems. It also studying the watering effect on strength and durability of flexible
pavement layered system. It was found that the effect of water existence in flexible pavement is very costly in terms of
pavement life. The cost increase due to decrease in design-life and increase of maintenance cost by 7% to 84% according to
elevation of ground water table and subgrade soil type. It also recommended to keep GWT far by at least 90% of matrix
height or 1.0m (which is bigger) below the matrix bottom line
Index Terms- Flexible pavement, strength, performance, ground water
Type : Research paper
Published : Volume-3,Issue-5
DOIONLINE NO - IJAMCE-IRAJ-DOIONLINE-5877
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Published on 2016-11-03 |
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