Effect of Glass Cullet Size and Hydrated Lime—Nanoclay Additives on the Mechanical Properties of Glassphalt Concrete

In this study, the use of glass waste as aggregate in asphalt mixtures was investigated. Maximum glass aggregate size options of 0.075, 2.00, 4.75 and 9.5 mm. were selected. Conventional bitumen, nanoclay-modified bitumen and hydrated lime-modified bitumen were used. Dense graded asphalt mixtures we...

Full description

Saved in:
Bibliographic Details
Published in:Sustainability 2021-12, Vol.13 (23), p.13284
Main Authors: İskender, Cansu, İskender, Erol, Aksoy, Atakan, Şengül, Celaleddin Ensar
Format: Article
Language:English
Subjects:
Additives
Aggregates
Asphalt
Asphalt mixes
Asphalt pavements
Biodegradable materials
Bitumens
Concrete
Crack propagation
Creep tests
Damage assessment
Deformation
Fatigue
Fatigue tests
Fracture mechanics
Internal friction
Lime
Low temperature
Low temperature resistance
Mechanical properties
Nanomaterials
Recycling
Tensile strength
Water damage
Water resistance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the use of glass waste as aggregate in asphalt mixtures was investigated. Maximum glass aggregate size options of 0.075, 2.00, 4.75 and 9.5 mm. were selected. Conventional bitumen, nanoclay-modified bitumen and hydrated lime-modified bitumen were used. Dense graded asphalt mixtures were designed according to the Marshall method. Mixtures were evaluated for low-temperature cracking, resistance to water damage, fatigue, and permanent deformation behavior with repeated creep, indirect tensile strength, indirect tensile fatigue, modified Lottman and Hamburg wheel tracking tests. Increasing glass aggregate size reduced the water damage resistance of asphalt mixtures because of the smooth surface of the glass particles and nanoclay and hydrated lime modification improved the mechanical properties of the asphalt mixtures. Using 2.00 mm sized maximum glass aggregate showed relatively less water damage and deformation properties due to higher internal friction which is due to the greater angularity of the glass particles. In addition, there was a significant correlation between repeated creep test, modified Lottman methods and Hamburg Wheel tracking test from the viewpoint of deformation and water damage assessments.
ISSN:2071-1050
2071-1050
DOI:10.3390/su132313284