Experimental evaluation of fatigue and recovery properties of a bituminous mixture during cyclic loading and rest tests

被引：0
|
作者：
Williams, Frank N. [1 ]
Mangiafico, Salvatore [1 ]
Sauzeat, Cedric [1 ]
机构：
[1] Univ Lyon, CNRS, Ecole Cent Lyon, ENTPE,LTDS,UMR5513, Vaulx En Velin, France
来源：
ROAD MATERIALS AND PAVEMENT DESIGN | 2024年 / 25卷
关键词：
Fatigue; recovery; damage; HEALING CAPABILITY; ASPHALT MIXTURES; COMPOSITES; THIXOTROPY; DAMAGE;
D O I：
10.1080/14680629.2023.2191740
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Research has shown that reversible phenomena such as non-linearity, self-heating and thixotropy occur during laboratory fatigue testing on bituminous mixes. This work aims to develop a test protocol to separate and quantify the recovery of reversible phenomena and the restoration of damage. Besides proposing some adjustments to the protocol, in the present paper, its repeatability is evaluated by comparing the results obtained for several samples of the same bituminous mixture. The test procedure is composed of two parts: short complex modulus tests (200 cycles at 10 Hz) at temperatures ranging from 8 degrees C to 14 degrees C with strain amplitudes ranging from 50 to 110 mu m/m are used and five partial fatigue tests (at 10 degrees C) are carried out at 100,000 cycles, 100 mu m/m and 10 Hz. Each fatigue lag is followed by a 48-h rest period which consists of short complex modulus tests. The test protocol appears to show reliability and provide repeatable results.
引用
收藏
页码：137 / 152
页数：16
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