|Table of Contents|

Effective modulus value of semirigid base course materials(PDF)

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

Issue:
2009年01期
Page:
15-19
Research Field:
Publishing date:
2009-01-20

Info

Title:
Effective modulus value of semirigid base course materials
Author(s):
JIA Kan1;  SHA Aimin1;  LU Jianqing2
1. School of Highway， Changan University， Xian 710064， Shaanxi, China; 2. Nanchang City Institute of Municipal Engineering Design, Nanchang 330008, Jiangxi, China
Keywords:
road engineering;  semirigid base course material;  dynamic modulus;  deterioration law;  effective modulus
PACS:
U414.1
DOI:
-
Abstract:
The current design value of flexuraltensile modulus of semirigid base course materials can not truly reflect the mechanic performance of the materials. The selecting methods of elastic modulus of semirigid base course materials in many countries were summarized, the fatigue test of a beam made by the semirigid base course materials was carried out, the tensilestress under the beams bottom was measured continually, and the deterioration laws of dynamic flexuraltensile modulus of the semirigid base course materials were studied. The results show that, the dynamic flexuraltensile modulus deterioration has a threestage facture, the selection of effective modulus value must be combined with its stage change in the design of pavement structure. 11 tabs, 2 figs, 9 refs.

References:

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Last Update: 2009-01-20