Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt

Clogging causes porous asphalt to lose its permeability function after a few years in service. Therefore, two-layer porous asphalt was developed to minimize this problem. This study presents a laboratory simulative test of clogging phenomenon occurred on porous pavements. To ascertain the cloggin...

Full description

Saved in:

Bibliographic Details
Main Author:	Abdullah, Noor Halizah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TA1-2040 Engineering (General) Civil engineering (General)
Online Access:	http://eprints.usm.my/45660/1/NOOR%20HALIZAH%20ABDULLAH_HJ.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.45660
record_format	uketd_dc
spelling	my-usm-ep.456602019-10-15T08:13:33Z Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt 2012-02 Abdullah, Noor Halizah TA1-2040 Engineering (General). Civil engineering (General) Clogging causes porous asphalt to lose its permeability function after a few years in service. Therefore, two-layer porous asphalt was developed to minimize this problem. This study presents a laboratory simulative test of clogging phenomenon occurred on porous pavements. To ascertain the clogging of porous asphalt, one and two-layer specimens were subjected to six clogging and cleansing cycles. The permeability loss was assessed using a falling head water permeameter. Porous asphalt specimens were tested incorporating conventional 60/70 and PG76 modified bitumen at four binder contents and three different top layer thicknesses of two-layer specimens. Selected specimens were subjected to temperature conditioning (10, 30 and 50 °C) to determine the effects of temperature to the severity of clogging. Semicircular bending test was used to assess the fracture toughness of porous asphalt. One and two-layer specimens were tested at 0, 10 and 20 °C testing temperatures. The overall results showed that porous asphalt loses its permeability mainly in the first two to three clogging and cleansing cycles. The clogging trend exhibits an exponential pattern with addition of clogging material. The performance of porous asphalt in resisting clogging can be ranked from the clogging and clog-recovery index. It was also found that two-layer specimens were a better clog-resistant mix compared to one-layer specimens while top layer thicknesses of two-layer specimen have no significant effect on clogging. Binder type and content have significant effects on clogging of porous asphalt. Higher temperature caused severe clogging to the mix and lower temperature result in least clogged mix. Generally, lower testing temperature resulted in higher fracture toughness. Subsequently, one-layer specimen exhibit higher fracture toughness compared to two-layer specimen and binder types also exhibit significant effect on the fracture toughness of porous asphalt. 2012-02 Thesis http://eprints.usm.my/45660/ http://eprints.usm.my/45660/1/NOOR%20HALIZAH%20ABDULLAH_HJ.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TA1-2040 Engineering (General) Civil engineering (General)
spellingShingle	TA1-2040 Engineering (General) Civil engineering (General) Abdullah, Noor Halizah Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
description	Clogging causes porous asphalt to lose its permeability function after a few years in service. Therefore, two-layer porous asphalt was developed to minimize this problem. This study presents a laboratory simulative test of clogging phenomenon occurred on porous pavements. To ascertain the clogging of porous asphalt, one and two-layer specimens were subjected to six clogging and cleansing cycles. The permeability loss was assessed using a falling head water permeameter. Porous asphalt specimens were tested incorporating conventional 60/70 and PG76 modified bitumen at four binder contents and three different top layer thicknesses of two-layer specimens. Selected specimens were subjected to temperature conditioning (10, 30 and 50 °C) to determine the effects of temperature to the severity of clogging. Semicircular bending test was used to assess the fracture toughness of porous asphalt. One and two-layer specimens were tested at 0, 10 and 20 °C testing temperatures. The overall results showed that porous asphalt loses its permeability mainly in the first two to three clogging and cleansing cycles. The clogging trend exhibits an exponential pattern with addition of clogging material. The performance of porous asphalt in resisting clogging can be ranked from the clogging and clog-recovery index. It was also found that two-layer specimens were a better clog-resistant mix compared to one-layer specimens while top layer thicknesses of two-layer specimen have no significant effect on clogging. Binder type and content have significant effects on clogging of porous asphalt. Higher temperature caused severe clogging to the mix and lower temperature result in least clogged mix. Generally, lower testing temperature resulted in higher fracture toughness. Subsequently, one-layer specimen exhibit higher fracture toughness compared to two-layer specimen and binder types also exhibit significant effect on the fracture toughness of porous asphalt.
format	Thesis
qualification_level	Master's degree
author	Abdullah, Noor Halizah
author_facet	Abdullah, Noor Halizah
author_sort	Abdullah, Noor Halizah
title	Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
title_short	Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
title_full	Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
title_fullStr	Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
title_full_unstemmed	Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt
title_sort	laboratory simulative clogging behaviour and fracture toughness of one and two-layer porous asphalt
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2012
url	http://eprints.usm.my/45660/1/NOOR%20HALIZAH%20ABDULLAH_HJ.pdf
_version_	1747821541389762560

Laboratory Simulative Clogging Behaviour And Fracture Toughness Of One And Two-Layer Porous Asphalt

Similar Items