Effect of mineral fillers on mastic and mixture for porous asphalt

Porous asphalt is known to have poor strength and durability due to open nature and large air voids that expose the structure to air, water, and clogging materials. This could lead to stripping and ravelling problems which contribute to rutting potential of porous asphalt. The addition of fillers ha...

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Main Author:	Mohd. Shukry, Nurul Athma
Format:	Thesis
Language:	English
Published:	2017
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/78954/1/NurulAthmaMohdMFKA2017.pdf
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spelling	my-utm-ep.789542018-09-19T05:12:59Z Effect of mineral fillers on mastic and mixture for porous asphalt 2017-04 Mohd. Shukry, Nurul Athma TA Engineering (General). Civil engineering (General) Porous asphalt is known to have poor strength and durability due to open nature and large air voids that expose the structure to air, water, and clogging materials. This could lead to stripping and ravelling problems which contribute to rutting potential of porous asphalt. The addition of fillers has been identified to improve the adhesion and cohesion properties by stiffening the asphalt binder and enhancing the bond strength between binder-aggregate. This study aims to investigate the effect of different filler types on the rheological properties of mastics and performances of porous asphalt. Hydrated lime, cement, and diatomite with content of 2% were used as fillers. The morphology and chemical composition of fillers were identified using a Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray (EDX) analysis. Dynamic Shear Rheometer (DSR) was used to investigate the rheological properties of mastics through frequency sweep and Multiple Stress Creep Recovery (MSCR) tests. DSR results indicated that the use of filler increases the stiffness of mastics. The MSCR test showed that hydrated lime and diatomite mastics exhibit the lowest non-recoverable compliance and high recovery compared to original PG 76 binder and cement mastic. The performances of porous asphalt were evaluated using permeability, abrasion loss, resilient modulus, and indirect tensile strength tests. All mixtures were found to show high permeability rate between 0.276 and 0.250 cm/s. Mixtures with hydrated lime showed lower abrasion loss of 21.5% compared to mixtures with cement and diatomite. In addition, the use of diatomite increases resistance of the mixtures to rutting and moisture damage compared to other fillers as shown by the enhanced resilient modulus and indirect tensile strength. 2017-04 Thesis http://eprints.utm.my/id/eprint/78954/ http://eprints.utm.my/id/eprint/78954/1/NurulAthmaMohdMFKA2017.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:110285 phd doctoral Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Mohd. Shukry, Nurul Athma Effect of mineral fillers on mastic and mixture for porous asphalt
description	Porous asphalt is known to have poor strength and durability due to open nature and large air voids that expose the structure to air, water, and clogging materials. This could lead to stripping and ravelling problems which contribute to rutting potential of porous asphalt. The addition of fillers has been identified to improve the adhesion and cohesion properties by stiffening the asphalt binder and enhancing the bond strength between binder-aggregate. This study aims to investigate the effect of different filler types on the rheological properties of mastics and performances of porous asphalt. Hydrated lime, cement, and diatomite with content of 2% were used as fillers. The morphology and chemical composition of fillers were identified using a Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray (EDX) analysis. Dynamic Shear Rheometer (DSR) was used to investigate the rheological properties of mastics through frequency sweep and Multiple Stress Creep Recovery (MSCR) tests. DSR results indicated that the use of filler increases the stiffness of mastics. The MSCR test showed that hydrated lime and diatomite mastics exhibit the lowest non-recoverable compliance and high recovery compared to original PG 76 binder and cement mastic. The performances of porous asphalt were evaluated using permeability, abrasion loss, resilient modulus, and indirect tensile strength tests. All mixtures were found to show high permeability rate between 0.276 and 0.250 cm/s. Mixtures with hydrated lime showed lower abrasion loss of 21.5% compared to mixtures with cement and diatomite. In addition, the use of diatomite increases resistance of the mixtures to rutting and moisture damage compared to other fillers as shown by the enhanced resilient modulus and indirect tensile strength.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Mohd. Shukry, Nurul Athma
author_facet	Mohd. Shukry, Nurul Athma
author_sort	Mohd. Shukry, Nurul Athma
title	Effect of mineral fillers on mastic and mixture for porous asphalt
title_short	Effect of mineral fillers on mastic and mixture for porous asphalt
title_full	Effect of mineral fillers on mastic and mixture for porous asphalt
title_fullStr	Effect of mineral fillers on mastic and mixture for porous asphalt
title_full_unstemmed	Effect of mineral fillers on mastic and mixture for porous asphalt
title_sort	effect of mineral fillers on mastic and mixture for porous asphalt
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2017
url	http://eprints.utm.my/id/eprint/78954/1/NurulAthmaMohdMFKA2017.pdf
_version_	1747818112236912640

Effect of mineral fillers on mastic and mixture for porous asphalt

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