Journal Published Online: 06 October 2017
Volume 46, Issue 3

Laboratory Performance Evaluation of Reinforced Basalt Fiber in Sealing Asphalt Chips

CODEN: JTEVAB

Abstract

This study investigated the laboratory performance of basalt fiber (BF) used as an asphalt-chip seal. Specimens of the basalt fiber asphalt-chip seal (BFACS) at various contents of styrene–butadiene–rubber (SBR)-modified emulsified asphalt (EA) and BF were prepared. These were subjected to a series of tests, including plate impact, sweeping, pull-out, and direct shear tests, to inspect their bond performances. The results indicate that BF can significantly improve the performances of the aggregate retention and the interlayer bond of asphalt-chip seal. This study evaluated the performance of BFACS in terms of the low-temperature anti-cracking, interlayer bond, and skid resistance. Specimens with different EA and BF contents and lengths were fabricated to quantify their respective impacts. The findings suggest the optimal BFACS design at 1.8 kg/m2 EA and 70 g/m2 BF with a length of 70 mm. The BF fiber was proven to substantially enhance the performance of asphalt-chip seal compared to the controlled specimens (0 % BF). Specifically, the tensile strength, shear strength, and surface texture depth for the optimal design were increased by 29.2 %, 51.6 %, and 14.2 %, respectively.

Author Information

Gu, X.
School of Transportation, Southeast University, Nanjing, Jiangsu, China
Zhang, X.
School of Transportation, Southeast University, Nanjing, Jiangsu, China
Lv, J.
School of Transportation, Southeast University, Nanjing, Jiangsu, China
Huang, Z.
School of Transportation, Southeast University, Nanjing, Jiangsu, China
Yu, B.
School of Transportation, Southeast University, Nanjing, Jiangsu, China
Zou, X.
Jinhua Highway Administration Bureau, Jinhua, Zhejiang, China
Pages: 11
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20160186
ISSN: 0090-3973
DOI: 10.1520/JTE20160186