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Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor

Stone Mastic Asphalt (SMA) is a gap-graded asphalt mixture that depends on the stone-to-stone contact to provide its load carrying capacity against rutting. However,binder draindown is a problem for SMA mixtures, due to its intentional high binder content. The objectives of this study were to evalua...

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Main Author: Mansor, Syahirah
Format: Thesis
Language:English
Published: 2014
Subjects:
Materials of engineering and construction
Online Access:https://ir.uitm.edu.my/id/eprint/15277/1/TM_SYAHIRAH%20MANSOR%20EC%2014_5.pdf
https://ir.uitm.edu.my/id/eprint/15277/
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spelling my.uitm.ir.152772022-03-14T04:00:27Z https://ir.uitm.edu.my/id/eprint/15277/ Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor Mansor, Syahirah Materials of engineering and construction Stone Mastic Asphalt (SMA) is a gap-graded asphalt mixture that depends on the stone-to-stone contact to provide its load carrying capacity against rutting. However,binder draindown is a problem for SMA mixtures, due to its intentional high binder content. The objectives of this study were to evaluate the volumetric properties, binder drainage, rutting and stripping performances in the SMA14 mixture. Two different cellulose fibres were used in SMA14 mix, which is synthetic fibre (Viatop66) and natural fibre (Kenaf) to prevent binder drainage. In this study, 0.3 percent cellulose fibres, by weight of mixture, were uniformly combined with the dried aggregate before the asphalt cement was added during mixing process. Laboratory specimens were prepared using 50 blows of the Marshall hammer per side. The optimum binder content (OBC) for SMA14 mixtures was selected to produce 4 percent air voids and draindown of less than 0.3 percent. The OBC for the SMA 14 mix with synthetic fibre (Viatop66) was found to be 6.1 percent at 4 percent air voids, while the OBC for the SMA14 mix with natural fibre (Kenaf) was found to be 5.9 percent at 4 percent air voids. The obtained OBC was used to prepare samples for rutting and stripping tests. Number of compaction applied for rutting and stripping samples were based on a trial and error method to obtain 7 ± 0.5 percent of air voids. Rut depth for SMA14 mix with natural fibre (Kenaf) obtained is 1.6 mm compared to SMA14 mix with synthetic fibre (Viatop66) which is 1.8 mm. The tensile strength ratio recorded for both mixes are greater than 80 percent, that resulting in enough stripping resistance. Based on ESEM, in SMA 14 mix with natural fibre, the voids were filled with natural fibre and the fibre interacts well with the other substances. This indicates that the natural fibre could efficiently retain the binder in the mix. Therefore,natural fibre could be an alternative material to replace the synthetic fibre for the SMA 14 mixture. 2014 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/15277/1/TM_SYAHIRAH%20MANSOR%20EC%2014_5.pdf ID15277 Mansor, Syahirah (2014) Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor. Masters thesis, thesis, Universiti Teknologi MARA.
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Materials of engineering and construction
spellingShingle Materials of engineering and construction
Mansor, Syahirah
Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
description Stone Mastic Asphalt (SMA) is a gap-graded asphalt mixture that depends on the stone-to-stone contact to provide its load carrying capacity against rutting. However,binder draindown is a problem for SMA mixtures, due to its intentional high binder content. The objectives of this study were to evaluate the volumetric properties, binder drainage, rutting and stripping performances in the SMA14 mixture. Two different cellulose fibres were used in SMA14 mix, which is synthetic fibre (Viatop66) and natural fibre (Kenaf) to prevent binder drainage. In this study, 0.3 percent cellulose fibres, by weight of mixture, were uniformly combined with the dried aggregate before the asphalt cement was added during mixing process. Laboratory specimens were prepared using 50 blows of the Marshall hammer per side. The optimum binder content (OBC) for SMA14 mixtures was selected to produce 4 percent air voids and draindown of less than 0.3 percent. The OBC for the SMA 14 mix with synthetic fibre (Viatop66) was found to be 6.1 percent at 4 percent air voids, while the OBC for the SMA14 mix with natural fibre (Kenaf) was found to be 5.9 percent at 4 percent air voids. The obtained OBC was used to prepare samples for rutting and stripping tests. Number of compaction applied for rutting and stripping samples were based on a trial and error method to obtain 7 ± 0.5 percent of air voids. Rut depth for SMA14 mix with natural fibre (Kenaf) obtained is 1.6 mm compared to SMA14 mix with synthetic fibre (Viatop66) which is 1.8 mm. The tensile strength ratio recorded for both mixes are greater than 80 percent, that resulting in enough stripping resistance. Based on ESEM, in SMA 14 mix with natural fibre, the voids were filled with natural fibre and the fibre interacts well with the other substances. This indicates that the natural fibre could efficiently retain the binder in the mix. Therefore,natural fibre could be an alternative material to replace the synthetic fibre for the SMA 14 mixture.
format Thesis
author Mansor, Syahirah
author_facet Mansor, Syahirah
author_sort Mansor, Syahirah
title Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
title_short Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
title_full Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
title_fullStr Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
title_full_unstemmed Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor
title_sort performance of stone mastic asphalt (sma) mix using selected fibres / syahirah mansor
publishDate 2014
url https://ir.uitm.edu.my/id/eprint/15277/1/TM_SYAHIRAH%20MANSOR%20EC%2014_5.pdf
https://ir.uitm.edu.my/id/eprint/15277/
_version_ 1728054702540587008
score 13.211869

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