Utilization of Reclaimed Asphalt Pavements in Indian Low-Volume Roads

Saride, Sireesh and Avirneni, D and Javvadi, S C P (2015) Utilization of Reclaimed Asphalt Pavements in Indian Low-Volume Roads. Journal of Materials in Civil Engineering, 28 (2). pp. 1-10. ISSN 0899-1561

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Abstract

Utilization of reclaimed asphalt pavement (RAP) in the construction industry is gaining an advantage over conventional materials in terms of sustainable credits. However, the amount of production of RAP and its utilization has no comparison. The general practice is to replace a small fraction of virgin aggregates with RAP, usually restricted to a maximum of 30%, in base layers to promote RAP usage in the pavement industry. The present study focuses on the utilization of a high proportion of RAP (>50%>50%) substitution in virgin aggregates (VA) as a base material in low volume roads (LVR). Mixes containing 100∶0100∶0, 80∶2080∶20, and 60∶4060∶40 proportions of RAP∶VARAP∶VA stabilized with different dosages of fly ash were evaluated for maximum dry density (MDD), optimum moisture content (OMC), unconfined compressive strength (UCS), resilient modulus (MrMr) and California bearing ratio (CBR). It was observed that the 80∶2080∶20 RAP∶VARAP∶VA design mix with 40% fly ash meets the design requirements (UCS>1.7 MPaUCS>1.7 MPa and CBR>80%CBR>80%) specified by the Ministry of Rural Development (MoRD), Government of India, and was considered to be an optimum mix. An example is discussed to design an LVR with an optimum mix according to the Indian Roads Congress (IRC) and AASHTO methods. The results revealed that the fatigue and rutting strains are well within the permissible limits for the new mix. The new mix design proved economical, as there was a 50% reduction in base layer thickness compared with the conventional design mix. Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29MT.1943-5533.0001374

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IITH Creators:

IITH Creators	ORCiD
Saride, Sireesh	UNSPECIFIED

Item Type:

Article

Additional Information:

The authors would also like to thank M/S Neyveli Lignite Corporation for their support in supplying fly ash for this research study. The authors acknowledge Ms. Anu M. George for her support and assistance with the work.

Uncontrolled Keywords:

Recycled asphalt pavement, Resilient modulus, Unconfined compressive strength, California bearing ratio, Low volume roads

Subjects:

Civil Engineering > Soil Structure Interaction

Divisions:

Department of Civil Engineering

Depositing User:

Library Staff

Date Deposited:

07 Jan 2016 09:30

Last Modified:

01 Sep 2017 10:45