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International Journal of Civil & Structural Engineering

Fatigue Characteristics of Cold Recycled Bituminous Emulsion Mixtures Using the Nottingham Asphalt Tester in the ITFT Mode of Testing

Author(s) : NICHOLAS H. THOM  , OKE, OLUWASEYI LANRE    , TONY PARRY   

Abstract

Knowledge of the fatigue characteristic of asphalt mixtures is essential for the design of flexible pavements since fatigue has been identified by researchers as one of the major failure mechanisms in flexible pavements. Information obtained from the laboratory fatigue characterization of such mixtures is normally used for predicting performance in service. While the literature is replete with information about the fatigue performance of hot asphalt mixtures (HMA), not much has been done to ascertain the responses of cold recycled asphalt mixtures which of late are increasingly becoming suitable and sustainable alternatives to HMA due to the energy, cost and environmental benefits they offer. This paper presents the results of laboratory fatigue characterization of cold recycled bituminous emulsion mixtures (CRBEMs) using the indirect tensile fatigue test (ITFT). The results showed among other things that cold recycled asphalt mixtures prepared at a mixing and compaction temperature of 32°C performed better in fatigue responses than their counterparts prepared at 20°C. The results of structural design and modelling of flexible pavement containing CRBEMs for fatigue life indicated that such materials would be applicable in low to medium volume traffic scenarios as road base materials.

No fo Author(s) : 3
Page(s) : 28 - 36
Electronic ISSN : 2372-3971
Volume 2 : Issue 1
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