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Investigation on Reinforced Mechanism of Fiber Reinforced Asphalt Concrete Based on Micromechanical Modeling
- Source :
- Advances in Materials Science and Engineering, Vol 2017 (2017)
- Publication Year :
- 2017
- Publisher :
- Hindawi Limited, 2017.
-
Abstract
- Short fibers have been widely used to prepare the fiber reinforced asphalt concrete (FRAC). However, internal interactions between fiber and other phases of asphalt concrete are unclear although experimental methods have been used to design the FRAC successfully. In this paper, numerical method was used to investigate the reinforced mechanism of FRAC from microperspective. 2D micromechanical model of FRAC was established based on Monte Carlo theory. Effects of fiber length and content on stress state of asphalt mortar, effective modulus, and viscoelastic deformation of asphalt concrete were investigated. Indirect tensile stiffness modulus (ITSM) test and uniaxial creep test were carried out to verify the numerical results. Results show that maximum stress of asphalt mortar is lower compared to the control concrete when the fiber length is longer than 12 mm. Fiber reduces the stress level of asphalt mortar significantly. Fiber length has no significant influence on the effective modulus of asphalt concrete. Fiber length and content both have notable impacts on the viscoelastic performance of FRAC. Fiber length should be given more attention in the future design of FRAC except the content.
- Subjects :
- Materials science
Article Subject
business.industry
0211 other engineering and technologies
General Engineering
Modulus
02 engineering and technology
021001 nanoscience & nanotechnology
Viscoelasticity
Stress (mechanics)
Asphalt concrete
Creep
021105 building & construction
Ultimate tensile strength
lcsh:TA401-492
General Materials Science
lcsh:Materials of engineering and construction. Mechanics of materials
Fiber
Deformation (engineering)
Composite material
0210 nano-technology
business
Subjects
Details
- Language :
- English
- ISSN :
- 16878442 and 16878434
- Volume :
- 2017
- Database :
- OpenAIRE
- Journal :
- Advances in Materials Science and Engineering
- Accession number :
- edsair.doi.dedup.....fdef4362224f4a479971c0aa62246498