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
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spelling	my-uitm-ir.152772022-03-14T04:00:27Z Performance of Stone Mastic Asphalt (SMA) mix using selected fibres / Syahirah Mansor 2014 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 https://ir.uitm.edu.my/id/eprint/15277/ https://ir.uitm.edu.my/id/eprint/15277/1/TM_SYAHIRAH%20MANSOR%20EC%2014_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty Civil Engineering
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
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
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
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
granting_institution	Universiti Teknologi MARA
granting_department	Faculty Civil Engineering
publishDate	2014
url	https://ir.uitm.edu.my/id/eprint/15277/1/TM_SYAHIRAH%20MANSOR%20EC%2014_5.pdf
_version_	1783733364698644480

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

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