|Table of Contents|

Road performance of glass fiber ultrathin overlay asphalt mixture(PDF)

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

Issue:
2019年05期
Page:
20-27
Research Field:
道路工程
Publishing date:

Info

Title:
Road performance of glass fiber ultrathin overlay asphalt mixture
Author(s):
CAI Junhua
(1. China University of Geosciences (Wuhan)， Wuhan 430074, Hubei, China; 2. Sanming Transport Construction Investment CO., Ltd, Sanming 365001, Fujian, China)
Keywords:
road engineer;  ultrathin asphalt mixture;  experiment study;  glass fiber;  road performance
PACS:
-
DOI:
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Abstract:
To improve the road performance of the ultrathin overlay asphalt mixture, pretreated glass fibers were mixed into AC10L, SMA10, and SAC10 ultrathin asphalt mixtures. The feasibility of adding glass fibers was verified by the Marshall test. The effect of glass fibers on the hightemperature performance of different asphalt types and gradations of ultrathin asphalt mixtures was evaluated by the hightemperature rutting test. The water stability performance and fatigue property of AC10L glass fiber ultrathin asphalt mixture was evaluated based on the immersion Marshall test, freezethaw splitting test, and fatigue loading test. The results show that the Marshall stability and flow value of the mixtures with different gradations are improved to some extent by adding glass fibers, and the physical properties of the mixtures can be improved. Therefore, it is feasible to mix glass fibers with ultrathin asphalt mixtures. The hightemperature performance of the mixture of different modified asphalt types all improve with an increase of glass fiber content. The dynamic stability of AC10L, SMA10, and SAC10 ultrathin asphalt mixture can increase by approximately 15%, and the influence of glass fiber on fine aggregate is greater. When the glass fiber content (mass fraction, the same below) is 0.4%, the dynamic stability of AC10L asphalt mixture is 23.8% higher than that of the unmixed asphalt mixture. With an increase of glass fiber content, the residual stability, ratio of freezethaw splitting tensile strength, and fatigue life of the AC10L ultrathin asphalt mixture all show the trend of first increasing and then decreasing. Compared with unmixed，when glass fiber content is 0.4%, the water stability of the AC10L asphalt mixture increases by approximately 8%, and the fatigue life increases by more than 25%. 6 tabs, 10 figs, 25 refs.

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Last Update: 2019-10-16