alexa Significance of RAP Content and Foamed Binder Content on Mechanistic Characteristics of Recycled Foamed Bituminous Mixes
ISSN: 2165-784X

Journal of Civil & Environmental Engineering
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Research Article

Significance of RAP Content and Foamed Binder Content on Mechanistic Characteristics of Recycled Foamed Bituminous Mixes

Siksha Swaroopa Kar1*, Devesh Tiwari1, AK Swamy2 and P.K. Jain3

1Academy of Scientific and Innovative Research, Pavement Engineering Area, CSIR-Central Road Research Institute, New Delhi, India

2Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India

3Academy of Scientific and Innovative Research, Pavement Engineering Area, CSIR-Central Road Research Institute, New Delhi, India

*Corresponding Author:
Siksha Swaroopa Kar
Academy of Scientific and Innovative Research, Pavement Engineering Area
CSIR- Central Road Research Institute, New Delhi 110025, India
Tel: 011 2684 8917
E-mail: [email protected]

Received March 14, 2016; Accepted April 16, 2016; Published April 18, 2016

Citation: Kar SS, Tiwari D, Swamy AK, Jain PK (2016) Significance of RAP Content and Foamed Binder Content on Mechanistic Characteristics of Recycled Foamed Bituminous Mixes. J Civil Environ Eng 6:220. doi:10.4172/2165-784X.1000220

Copyright: © 2016 Kar SS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

To reduce the energy consumption and CO2 emissions during asphalt production, several environmentally friendly technologies have been developed during the last years. One of these technologies is the cold recycling by using foamed bitumen. Foaming the bitumen reduces the binder viscosity temporarily and increases the volume as well. Homogenous foams are produced by injection of cold water into hot bitumen. The paper presents the results of laboratory testing of the physical and mechanical parameters of the recycled mixes using the foamed bitumen and resistance to the action of water. The aim of the tests was to evaluate the properties of the mixes in terms of the RAP Content and Foam Binder Content. To evaluate the significance of impact of both factors i.e., Foam Binder Content and RAP Content on the distribution of the analyzed parameters, two-way Analysis of Variance (ANOVA) was performed. ANOVA Analysis results suggest that the RAP in cold mixes is not completely acting as black rock implying that some portion of the residual aged binder is possibly rejuvenated or softened by adding new binders.

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