Effect of Fibers on Mixture Design of Stone Matrix Asphalt
Open Access
- 17 March 2017
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 7 (3), 297
- https://doi.org/10.3390/app7030297
Abstract
Lignin fibers typically influence the mixture performance of stone matrix asphalt (SMA), such as strength, stability, durability, noise level, rutting resistance, fatigue life, and water sensitivity. However, limited studies were conducted to analyze the influence of fibers on the percent voids in mineral aggregate in bituminous mixture (VMA) during the mixture design. This study analyzed the effect of different fibers and fiber contents on the VMA in SMA mixture design. A surface-dry condition method test and Marshall Stability test were applied on the SMA mixture with four different fibers (i.e., flocculent lignin fiber, mineral fiber, polyester fiber, blended fiber). The test results indicated that the bulk specific gravity of SMA mixtures and asphalt saturation decreased with the increasing fiber content, whilst the percent air voids in bituminous mixtures (VV), Marshall Stability and VMA increased. Mineral fiber had the most obvious impact on the bulk specific gravity of bituminous mixtures, while flocculent lignin fiber had a minimal impact. The mixture with mineral fiber and polyester fiber had significant effects on the volumetric properties, and, consequently, exhibited better VMA over the conventional SMA mixture with lignin fiber. Modified fiber content range was also provided, which will widen the utilization of mineral fiber and polyester fiber in the applications of SMA mixtures. The mixture evaluation suggested no statistically significant difference between lignin fiber and polyester fiber on the stability. The mineral fiber required a much larger fiber content to improve the mixture performance than other fibers. Overall, the results can be a reference to guide SMA mixture design.Keywords
Funding Information
- The National Natural Science Foundation of China (51608046)
- Qinghai Transportation Science and Technology Project (2014-GX-A2A, 310831163509 and 310831153401)
- China Postdoctoral Science Foundation (2015T81000 and 2015M582590)
This publication has 15 references indexed in Scilit:
- Laboratory investigation on the properties of asphalt mixtures modified with double-adding admixtures and sensitivity analysisJournal of Traffic and Transportation Engineering (English Edition), 2016
- Investigating the Sensitivity of Aggregate Size within Sand Mastic by Modeling the Microstructure of an Asphalt MixtureJournal of Materials in Civil Engineering, 2011
- Preliminary Dynamic Modulus Criteria of HMA for Field Rutting of Asphalt Pavements: Michigan’s ExperienceJournal of Transportation Engineering, 2011
- Utilization of municipal solid waste incineration ash in stone mastic asphalt mixture: Pavement performance and environmental impactConstruction and Building Materials, 2008
- Dynamic complex modulus predictions of hot-mix asphalt using a micromechanical-based finite element modelCanadian Journal of Civil Engineering, 2007
- Minimum voids in mineral aggregate in hot-mix asphalt based on asphalt film thicknessJournal of Affective Disorders, 2007
- Determining Air Voids Content of Compacted Stone Matrix Asphalt MixturesTransportation Research Record: Journal of the Transportation Research Board, 2004
- Critical Review of Voids in Mineral Aggregate Requirements in SuperpaveTransportation Research Record: Journal of the Transportation Research Board, 1998
- Evaluation and Selection of Aggregate Gradations for Asphalt Mixtures Using SuperpaveTransportation Research Record: Journal of the Transportation Research Board, 1997
- Void Requirements for Dense-Graded Bituminous Paving MixturesPublished by ASTM International ,1959