Effect of adding glass fiber on the properties of asphalt mix
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International Journal of Pavement Research and Technology Journal homepage: www.springer.com/42947
Effect of adding glass fiber on the properties of asphalt mix M. S. Eisaa*, M. E. Basiounya, M. I. Daloobb a
Civil Engineering Department, Benha Faculty of Engineering, Benha university, New Benha, Qalubiya Governorate, Benha 13512, Egypt b Civil Engineering Department, High Institute of Engineering & Technology, El- Salam, Cairo, Egypt Received 28 May 2020; received in revised form2 September 2020; accepted 3 September 2020
Abstract
The continuing rapid growth in traffic, along with the rise in allowable axle loads, requires improvement of highway paving materials. In the recent decades, different types of fiber materials are utilized for improving the performance of asphalt mixture. A laboratory investigation was carried out into the effect of adding Glass Fiber (GF) on some properties of Hot Mix Asphalt (HMA) mixtures. Subsequently, five HMA specimens were prepared using the Marshall mix design method for wearing surface mix (mix 4C). Marshall Stability (MS) and flow tests were applied to the specimens. Also, MS and flow values were recorded. For the Optimum Asphalt Content (O.A.C) and different GF percentages, the Marshall parameters were calculated. Then, some special tests were conducted to measure the different mix properties, including loss of stability, wheel tracking and indirect tensile strength tests. Results of the study led to important conclusions regarding using of Glass Fiber (GF) to improve most of the properties of HMA mixtures. Finally, this study recommended a proposed mix with 0.25% GF by weight of the total mix. Keywords: Hot mix asphalt; Glass fiber; Loss of stability; Wheel tracking; Indirect tensile strength
1. Introduction Flexible pavement which is considered a major type has been widely constructed in highway engineering all over the world [1,2]. However, flexible pavement deteriorates over time because of the influence of traffic loading and the environment [3]. Many researches aim to better materials and modifications have been conducted to improve the properties of HMA and reduce the distresses of flexible pavement. Therefore, various types of fibers have been utilized in asphalt mixtures to enhance the performance [4]. The use of fibers in HMA improves engineering properties, fatigue resistance, rutting resistance and stiffness and has therefore become an effective alternative for the road pavements construction [5,6]. For this objective, many studies have been carried out to examine the properties and performance of HMA mixtures containing various types of fiber such as steel, carbon, aramid, polyethylene, polypropylene, basalt, polyester and glass fibers [4,6–10]. The influence of various types of fibers was examined on the mechanical properties of asphalt mixtures [11]. Glass fibers can * Corresponding author E-mail addresses: [email protected]; https://orcid.org/0000-0002-4111-1829 (M. S. Eisa); [email protected] (M. E. Basiouny); engmohammeddaloob@ya
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