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The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor

The introduction of Superpave mix design in 1993 in the United States has categorized mixes based on the nominal maximum aggregate size (NMAS). The centerpiece of the mix design is the Superpave Gyratory Compactor (SGC). Properties of hot mix asphalt (HMA) have always been associated with pavement d...

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Main Author: Chong, Elizabeth Eu Mee
Format: Thesis
Language:English
Published: 2006
Subjects:
TA Engineering (General). Civil engineering (General)
TE Highway engineering. Roads and pavements
Online Access:http://eprints.utm.my/id/eprint/2071/1/ChongEuMeeMFKA2006.pdf
http://eprints.utm.my/id/eprint/2071/
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spelling my.utm.20712018-06-13T07:05:13Z http://eprints.utm.my/id/eprint/2071/ The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor Chong, Elizabeth Eu Mee TA Engineering (General). Civil engineering (General) TE Highway engineering. Roads and pavements The introduction of Superpave mix design in 1993 in the United States has categorized mixes based on the nominal maximum aggregate size (NMAS). The centerpiece of the mix design is the Superpave Gyratory Compactor (SGC). Properties of hot mix asphalt (HMA) have always been associated with pavement deformations. This study looks into the effects of NMAS on the properties of Malaysian HMA mixtures, which includes optimum bitumen content (OBC), bulk specific gravity (Gmb), theoretical maximum density (TMD), water absorption (WA), voids in mineral aggregate (VMA), voids filled with bitumen (VFB), and dust to binder ratio (D:B). Thus, a better understanding of the properties can reduce the pavement deformations. A total of four asphaltic concrete mix designs with different NMAS were prepared in accordance with the JKR Specification, namely AC10, AC14, AC20, and AC28. Specimens of each mix design with varying bitumen content were compacted to 75 and 100 gyrations using SGC to obtain 4±1% air voids. It was observed that as the NMAS increased, the OBC and VMA decreased. The Gmb, TMD, WA, and D:B showed opposite trend of the earlier properties. T-tests indicated that all properties except VMA were affected by NMAS. VMA for AC20 failed the minimum requirement initially but when calculated using the average asphalt film thickness method, it was acceptable. Different compaction efforts showed the same pattern on the properties except VFB while t-tests revealed that OBC, TMD, VMA, and D:B were significantly affected. Investigation also showed that AC20 is the best mix from the economic and durability point of views 2006-11 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/2071/1/ChongEuMeeMFKA2006.pdf Chong, Elizabeth Eu Mee (2006) The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering.
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
TE Highway engineering. Roads and pavements
spellingShingle TA Engineering (General). Civil engineering (General)
TE Highway engineering. Roads and pavements
Chong, Elizabeth Eu Mee
The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
description The introduction of Superpave mix design in 1993 in the United States has categorized mixes based on the nominal maximum aggregate size (NMAS). The centerpiece of the mix design is the Superpave Gyratory Compactor (SGC). Properties of hot mix asphalt (HMA) have always been associated with pavement deformations. This study looks into the effects of NMAS on the properties of Malaysian HMA mixtures, which includes optimum bitumen content (OBC), bulk specific gravity (Gmb), theoretical maximum density (TMD), water absorption (WA), voids in mineral aggregate (VMA), voids filled with bitumen (VFB), and dust to binder ratio (D:B). Thus, a better understanding of the properties can reduce the pavement deformations. A total of four asphaltic concrete mix designs with different NMAS were prepared in accordance with the JKR Specification, namely AC10, AC14, AC20, and AC28. Specimens of each mix design with varying bitumen content were compacted to 75 and 100 gyrations using SGC to obtain 4±1% air voids. It was observed that as the NMAS increased, the OBC and VMA decreased. The Gmb, TMD, WA, and D:B showed opposite trend of the earlier properties. T-tests indicated that all properties except VMA were affected by NMAS. VMA for AC20 failed the minimum requirement initially but when calculated using the average asphalt film thickness method, it was acceptable. Different compaction efforts showed the same pattern on the properties except VFB while t-tests revealed that OBC, TMD, VMA, and D:B were significantly affected. Investigation also showed that AC20 is the best mix from the economic and durability point of views
format Thesis
author Chong, Elizabeth Eu Mee
author_facet Chong, Elizabeth Eu Mee
author_sort Chong, Elizabeth Eu Mee
title The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
title_short The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
title_full The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
title_fullStr The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
title_full_unstemmed The effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
title_sort effects of nominal maximum aggregate size on the properties of hot mix asphalt using gyratory compactor
publishDate 2006
url http://eprints.utm.my/id/eprint/2071/1/ChongEuMeeMFKA2006.pdf
http://eprints.utm.my/id/eprint/2071/
_version_ 1643643491855630336
score 13.211869

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