Effects of Fiber Finish on the Performance of Asphalt Binders and Mastics

Putman, Bradley J.

doi:10.1155/2011/172634

Cited by 13 publications

(7 citation statements)

References 7 publications

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“…The abrasion loss value of the control mixture is found to be up to 0.7 percent higher when 0.7 percent steel fiber is added. This indicates that increasing the proportion of steel fiber in a SMA mixture does not improve its abrasion resistance, which is consistent with other researcher findings [7]. Variations in abrasion values, on the other hand, could be caused by a variety of factors, including the angularity of coarse aggregates and uneven compaction force.…”

Section: Cantabro Loss Testsupporting

confidence: 89%

“…Fiber is a type of polymer that is commonly used as an addition for this purpose [5]. The addition of fibers changes the viscoelasticity of the mixture [6], increases its dynamic modulus [7], improves humidity sensitivity [8], and improves flow coherence, and provides rutting resistance [9,10]. According to the study done by Serin [6], the use of fibers can provide strengthening effect to the application of road pavement.…”

Section: Introductionmentioning

confidence: 99%

“…Since the advent of fiber modified asphalt mixture, a great deal of testing has been conducted on various fibrous materials to determine the actual characteristics and advantages for each type. However, due to its good mechanical properties, low water absorption, and high melting point, a new environmentally friendly fibre, steel fiber, has attracted a lot of attention [7]. The main objective of this study is to evaluate the performance of modified SMA with steel fiber by using Marshall compaction methods.…”

Section: Introductionmentioning

confidence: 99%

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Performance Characterization of Stone Mastic Asphalt using Steel Fiber

Shaffie

Abdul-Rashid²,

Shiong

et al. 2021

JAITA

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Stone Mastic Asphalt (SMA) is a gap-graded hot mixture designed to provide higher resistance towards permanent deformation and rutting potential by 30% to 40% more than dense-graded asphalt, due to its stable aggregate skeleton structure. However, compared to other types of hot mix asphalt, SMA unfortunately has some shortcomings in term of its susceptibility towards moisture-induced damage due to its structure and excessive bitumen content in the composition. This research aims to assess the performance of a SMA mixture with steel fiber by enhancing overall stability, abrasion resistance, and, most importantly, moisture susceptibility. This study involved the incorporation of various steel fiber proportions of 0%, 0.3%, 0.5% and 0.7% by the total weight of mixture. The steel fiber modified SMA was made up of 6.0% PEN 60/70 bitumen content. The performance of SMA were evaluated through Marshall stability and flow test, Cantabro loss test and indirect tensile strength test. The results obtained from the testing showed that the incorporation of steel fiber is significantly effective to enhance the resistance towards moisture damage, while increasing the stability and reducing the abrasion loss of SMA mixture, compared to conventional mixture. Overall, it can be concluded that the addition of steel fiber in asphalt mixture specifically SMA, has improved the mechanical performance in the application of asphalt pavement with the optimum steel fiber proportion of 0.3% by the weight of mixture. The developed models between the independent variables and responses demonstrated high levels of correlation. The study found that Response Surface Methodology (RSM) is an effective statistical method for providing an appropriate empirical model for relating parameters and predicting the optimum performance of an asphaltic mixture to reduce flexible pavement failure.

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Section: Cantabro Loss Testsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Characterization of Stone Mastic Asphalt using Steel Fiber

Shaffie

Abdul-Rashid²,

Shiong

et al. 2021

JAITA

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“…This increase in complex modulus could be due to the fibre affecting the chemical composition of the binder by adsorption/absorption of different fractions, mainly lighter fractions. A previous study, using chromatography, indicated that the fibre could influence the absorption of different fractions, particularly lighter fractions [26]. This result reflects the asphaltene content results, as the asphaltene content increased for drained binder after mixing with fibres, as shown in Table 3.…”

Section: Complex Modulus Master Curve Of Base and Drained Bindersupporting

confidence: 57%

Investigation into the bond strength of bitumen-fibre mastic

Mohammed

Parry

Thom

et al. 2018

Construction and Building Materials

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The loss of bond strength in road pavement surfacing due to high traffic loads or moisture is a recurring problem, creating distresses such as ravelling, fatigue and rutting. It is, therefore, important to find a way to prevent or at least delay the loss of bond strength in asphalt mixtures. Such an improvement would lead to longer service life and a more comfortable drive for road users. This study describes how the pneumatic adhesion tensile testing instrument (PATTI) was used to examine the mechanism by which fibres influence the pull-off tensile strength of asphalt mastic. This study assesses the potential for chemical modification of the binder due to the presence of fibres, by means of work of cohesion and work of adhesion calculations, based on surface energy parameters and a binder drainage test. The study also evaluates the influence of different filler-bitumen ratios and fibre percentages on pull-off tensile strength. The test results indicate that the fibres enhance the pull-off tensile strength of the mastic, in addition to changing the failure mode from cohesive to hybrid, implying an improvement in the cohesive strength of the mastic.

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“…Company initiated the first evaluation of asbestos fibers in HMA (5). Results of this study indicated that mixtures containing asbestos fibers illustrated an increase in tensile strength, compressive strength, stability, ability to sustain load after reaching maximum stability, and resistance to weathering.…”

Section: Use Of Fibers In Asphalt Pavementsmentioning

confidence: 99%