Interface shear bond analysis of different geosynthetic paving interlayers

被引：0
|
作者：
Silva, M. P. S. [1 ]
Santos, K. M. [1 ]
Correia, N. S. [1 ]
机构：
[1] Univ Fed Sao Carlos, Sao Carlos, SP, Brazil
来源：
GEOSYNTHETICS: LEADING THE WAY TO A RESILIENT PLANET, 12ICG 2023 | 2024年
基金：
巴西圣保罗研究基金会;
关键词：
Geosynthetics; Pavement interlayer; Asphalt layer; Interface shear strength; physical characteristics; STRENGTH; PERFORMANCE; PAVEMENTS;
D O I：
10.1201/9781003386889-290
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Different variables shows to affect shear bond performance of geosynthetic paving interlayers. The correct evaluation of the interface shear bond is fundamental to estimate design parameters and the service life of the pavement. The present study evaluated five types of geosynthetics, including four different geogrids and a paving fabric, using Leutner shear tests. In addition, the influence of geosynthetics characteristics on interface shear bond parameters was analyzed. Double-layered asphalt specimens were prepared in the laboratory considering the same binder impregnation rate of 600 g/m(2). Geogrids showed overall superior interface shear strength behavior compared to geocomposite, although inferior to control samples. Furthermore, the geogrid aperture size played an important role in shear bond results, corroborated by the through hole bonding mechanism. The presence of bituminous coating contributed to interface shear bond results. Interface shear stiffness and accumulated energy analyzes showed that large geogrids aperture sizes presented similar behavior to control samples.
引用
收藏
页码：2153 / 2158
页数：6
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