|Table of Contents|

Rational composition of semi-rigid asphalt pavement based on setting transition layer(PDF)

长安大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2012年04期
Page:
25-30
Research Field:
Publishing date:

Info

Title:
Rational composition of semi-rigid asphalt pavement based on setting transition layer
Author(s):
LI Hai-bin12 SHA Ai-min2
1. School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China; 2. Key Laboratory for Special Area Highway Engineering of the Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
road engineering asphalt pavement semi-rigid base layer graded broken stone asphalt macadam mechanical response
PACS:
U416.217
DOI:
-
Abstract:
According to the crack failure of semi-rigid base during its using process, the applicability of semi-rigid base in high grade highway was queried. The aims of improving force and reducing crack were achieved by the means of setting graded broken stone layer and asphalt macadam layer. The ANSYS software was used to investigate the suitable semi-rigid base horizon and depth, the forces of wheel clearance center was analyzed when the depth changes under different loads through setting different depths of graded broken stone layer and asphalt macadam layer. The mechanical analysis results show that the requirement of controlling crack can be completely satisfied by setting the graded broken stone layer with thickness from 12 to 15 cm and the semi-rigid base with thickness from 25 to 35 cm, or the asphalt macadam layer with thickness from 10 to 15 cm and the semi-rigid base with thickness from 20 to 30 cm. This method can obviously reduce the cracks and prolong the pavement life. 2 tabs, 6 figs, 15 refs.

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Last Update: 2012-08-30