Bending fatigue characteristics of fiber grid reinforced cement concrete pavement

Diandian Ding

doi:10.6180/jase.202102_24(1).0013

Bending fatigue characteristics of fiber grid reinforced cement concrete pavement

Civil Engineering

Diandian Ding This email address is being protected from spambots. You need JavaScript enabled to view it.¹

¹School of Resources and Civil Engineering, Suzhou University, Suzhou, Anhui, China

Received: June 8, 2020
Accepted: September 27, 2020
Publication Date: February 1, 2021

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202102_24(1).0013

ABSTRACT

This study aims to improve the flexural fatigue performance of the extended or repaired cement highway pavement. The bending fatigue performance of the cement road surface was enhanced by the method of glass fiber grid reinforcement. The finite element analysis of the structure of the glass fiber grid reinforced cement road surface was carried out by ANSYS software. The influence of different reinforcement positions on the fatigue performance of the road surface was tested by the bending fatigue experiment of the small beam. After adding the glass fiber grid to cement pavement, the peak value of vertical compressive stress at the addition location significantly reduced. Although the horizontal stress increased, the horizontal stress on the upper and lower layers of the grid relatively reduced as the glass fiber grid shared the stress. The fatigue life significantly reduced as the alternating load stress level increased on cement pavement, and the bending stress and fatigue life basically showed a double logarithmic, linear relation. The bending fatigue performance of cement pavement can be effectively improved by using the method of glass fiber grid reinforcement, and the closer the location of grid reinforcement is to the bottom of the pavement, the more the fatigue life will be improved.

Keywords: glass fiber grid, cement, highway pavement, fatigue

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