A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An experimental laboratory study of fiber-reinforced asphalt mortars with polyolefin-aramid and polyacrylonitrile fibers
https://orcid.org/0000-0002-8544-0392
https://orcid.org/0000-0002-4573-6973
https://orcid.org/0000-0001-5658-3901
Graphical abstract Display Omitted
Highlights Fracture parameters of fiber-reinforced asphalt mortars were investigated. A blend of polyolefin-aramid fibers and polyacrylonitrile fibers were employed as reinforcement additives. At low temperature (−15 °C) the behavior of the FRAM appears to be elastic-brittle. Significant improvement was observed with both types of fibers at low temperature (−15 °C).
Abstract Promising results have been found in the literature through use of synthetic fibers in hot mix asphalt. However, few research works have focused on studying the effect of these fibers at asphalt mortar scale. In this research, the reinforcing effect of polyolefin-aramid (POA) fibers and polyacrylonitrile (PAN) fibers is investigated in asphalt mortars through indirect tensile testing. Fiber-Reinforced Asphalt Mortar (FRAM) specimens were prepared with different fiber contents (0.1 wt%, 0.2 wt% and 0.3 wt%) and tested at three temperatures (15 °C, 0 °C, −15 °C). Indirect tensile strength, fracture energy, post-cracking energy and toughness were the parameters obtained and analyzed from the test in order to understand the behavior of the different FRAM designs. Moreover, the failure types obtained were also analyzed. According to the experimental results, a significant improvement of strength at low temperature (−15 °C) was observed when adding 0.3% of POA or PAN fibers. Furthermore, the fracture energy properties were enhanced due to the addition of fibers.
An experimental laboratory study of fiber-reinforced asphalt mortars with polyolefin-aramid and polyacrylonitrile fibers
https://orcid.org/0000-0002-8544-0392
https://orcid.org/0000-0002-4573-6973
https://orcid.org/0000-0001-5658-3901
Graphical abstract Display Omitted
Highlights Fracture parameters of fiber-reinforced asphalt mortars were investigated. A blend of polyolefin-aramid fibers and polyacrylonitrile fibers were employed as reinforcement additives. At low temperature (−15 °C) the behavior of the FRAM appears to be elastic-brittle. Significant improvement was observed with both types of fibers at low temperature (−15 °C).
Abstract Promising results have been found in the literature through use of synthetic fibers in hot mix asphalt. However, few research works have focused on studying the effect of these fibers at asphalt mortar scale. In this research, the reinforcing effect of polyolefin-aramid (POA) fibers and polyacrylonitrile (PAN) fibers is investigated in asphalt mortars through indirect tensile testing. Fiber-Reinforced Asphalt Mortar (FRAM) specimens were prepared with different fiber contents (0.1 wt%, 0.2 wt% and 0.3 wt%) and tested at three temperatures (15 °C, 0 °C, −15 °C). Indirect tensile strength, fracture energy, post-cracking energy and toughness were the parameters obtained and analyzed from the test in order to understand the behavior of the different FRAM designs. Moreover, the failure types obtained were also analyzed. According to the experimental results, a significant improvement of strength at low temperature (−15 °C) was observed when adding 0.3% of POA or PAN fibers. Furthermore, the fracture energy properties were enhanced due to the addition of fibers.
An experimental laboratory study of fiber-reinforced asphalt mortars with polyolefin-aramid and polyacrylonitrile fibers
https://orcid.org/0000-0002-8544-0392
https://orcid.org/0000-0002-4573-6973
https://orcid.org/0000-0001-5658-3901
Graphical abstract Display Omitted
Highlights Fracture parameters of fiber-reinforced asphalt mortars were investigated. A blend of polyolefin-aramid fibers and polyacrylonitrile fibers were employed as reinforcement additives. At low temperature (−15 °C) the behavior of the FRAM appears to be elastic-brittle. Significant improvement was observed with both types of fibers at low temperature (−15 °C).
Abstract Promising results have been found in the literature through use of synthetic fibers in hot mix asphalt. However, few research works have focused on studying the effect of these fibers at asphalt mortar scale. In this research, the reinforcing effect of polyolefin-aramid (POA) fibers and polyacrylonitrile (PAN) fibers is investigated in asphalt mortars through indirect tensile testing. Fiber-Reinforced Asphalt Mortar (FRAM) specimens were prepared with different fiber contents (0.1 wt%, 0.2 wt% and 0.3 wt%) and tested at three temperatures (15 °C, 0 °C, −15 °C). Indirect tensile strength, fracture energy, post-cracking energy and toughness were the parameters obtained and analyzed from the test in order to understand the behavior of the different FRAM designs. Moreover, the failure types obtained were also analyzed. According to the experimental results, a significant improvement of strength at low temperature (−15 °C) was observed when adding 0.3% of POA or PAN fibers. Furthermore, the fracture energy properties were enhanced due to the addition of fibers.
An experimental laboratory study of fiber-reinforced asphalt mortars with polyolefin-aramid and polyacrylonitrile fibers
Slebi-Acevedo, Carlos J. (author) / Lastra-González, Pedro (author) / Castro-Fresno, Daniel (author) / Bueno, Moises (author)
2020-02-28
Article (Journal)
Electronic Resource
English