Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement

Flexible or asphalt concrete pavement is the paving system most widely adopted all over the world. It has been recognized that there are many different types of the factors affecting the performance and durability of asphalt concrete pavement, including the service conditions, such as: the variation...

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Main Authors: Al-Tameemi Ahmed F., Wang Yu, Albayati Amjad
Format: Article
Language:English
Published: Sciendo 2015-07-01
Series:Romanian Journal of Transport Infrastructure
Subjects:
Online Access:https://doi.org/10.1515/rjti-2015-0027
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author Al-Tameemi Ahmed F.
Wang Yu
Albayati Amjad
author_facet Al-Tameemi Ahmed F.
Wang Yu
Albayati Amjad
author_sort Al-Tameemi Ahmed F.
collection DOAJ
description Flexible or asphalt concrete pavement is the paving system most widely adopted all over the world. It has been recognized that there are many different types of the factors affecting the performance and durability of asphalt concrete pavement, including the service conditions, such as: the variation of temperature from mild to extremes and the repeated excessive axle loading as well as the inadequate quality of the raw materials. All of these when combined together are going to accelerate the occurrence of distresses in flexible pavement such as permanent deformation and fatigue cracking. As the result, there has an urgent need to enhance the ability of asphalt concrete mixture to resist distresses happened in pavement. Use of additives is one of the techniques adopted to improve pavement properties. It has been found that hydrated lime might be one of the effective additives because it is widely available and relatively cheap compared to other modifiers like polymers. This paper presents an experimental study of the hydrated-lime modified asphalt concrete mixtures. Five different percentages of the hydrated lime additive were investigated, namely (1, 1.5, 2, 2.5 and 3 percent). The hydrated lime additive was used as partial replacement of limestone filler by total weight of the aggregate. The designed Hot Mix Asphalt (HMA) concretes are for the application of three pavement courses, i.e. Surface, Leveling and Base. These mixtures are designed and tested following Marshall procedure and uniaxial repeated loading to evaluate permanent deformation at different temperatures of 20°C, 40°C and 60°C. The experimental results show that the addition of hydrated lime as a partial replacement of ordinary limestone mineral filler results a significant improvement on mechanical properties and the resistant to permanent deformation of the designed asphalt concrete mixtures.
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spelling doaj.art-c66ebdbc693d44f1828a9fc962768f9b2022-12-21T19:12:38ZengSciendoRomanian Journal of Transport Infrastructure2286-22182015-07-014111910.1515/rjti-2015-0027rjti-2015-0027Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in PavementAl-Tameemi Ahmed F.0Wang Yu1Albayati Amjad2Assistant Lecturer at Al-Nahrain University, Iraq, PhD researcher at the Engineering Research Centre, School of Computing, Science & Engineering, University of Salford, Manchester UK.Engineering Research Centre, School of Computing, Science & Engineering, University of Salford, Manchester UK.Civil Engineering Department, University of Baghdad, Iraq.Flexible or asphalt concrete pavement is the paving system most widely adopted all over the world. It has been recognized that there are many different types of the factors affecting the performance and durability of asphalt concrete pavement, including the service conditions, such as: the variation of temperature from mild to extremes and the repeated excessive axle loading as well as the inadequate quality of the raw materials. All of these when combined together are going to accelerate the occurrence of distresses in flexible pavement such as permanent deformation and fatigue cracking. As the result, there has an urgent need to enhance the ability of asphalt concrete mixture to resist distresses happened in pavement. Use of additives is one of the techniques adopted to improve pavement properties. It has been found that hydrated lime might be one of the effective additives because it is widely available and relatively cheap compared to other modifiers like polymers. This paper presents an experimental study of the hydrated-lime modified asphalt concrete mixtures. Five different percentages of the hydrated lime additive were investigated, namely (1, 1.5, 2, 2.5 and 3 percent). The hydrated lime additive was used as partial replacement of limestone filler by total weight of the aggregate. The designed Hot Mix Asphalt (HMA) concretes are for the application of three pavement courses, i.e. Surface, Leveling and Base. These mixtures are designed and tested following Marshall procedure and uniaxial repeated loading to evaluate permanent deformation at different temperatures of 20°C, 40°C and 60°C. The experimental results show that the addition of hydrated lime as a partial replacement of ordinary limestone mineral filler results a significant improvement on mechanical properties and the resistant to permanent deformation of the designed asphalt concrete mixtures.https://doi.org/10.1515/rjti-2015-0027asphalt concreteadditivesmineral fillerhydrated limepermanent deformation
spellingShingle Al-Tameemi Ahmed F.
Wang Yu
Albayati Amjad
Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
Romanian Journal of Transport Infrastructure
asphalt concrete
additives
mineral filler
hydrated lime
permanent deformation
title Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
title_full Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
title_fullStr Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
title_full_unstemmed Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
title_short Influence of Hydrated Lime on the Properties and Permanent Deformation of the Asphalt Concrete Layers in Pavement
title_sort influence of hydrated lime on the properties and permanent deformation of the asphalt concrete layers in pavement
topic asphalt concrete
additives
mineral filler
hydrated lime
permanent deformation
url https://doi.org/10.1515/rjti-2015-0027
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AT wangyu influenceofhydratedlimeonthepropertiesandpermanentdeformationoftheasphaltconcretelayersinpavement
AT albayatiamjad influenceofhydratedlimeonthepropertiesandpermanentdeformationoftheasphaltconcretelayersinpavement