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The reliability of asset management regime of the SROH using air void content of asphalt mixtures

Sadique, MM and Al-Nageim, H and Stopps, K (2017) The reliability of asset management regime of the SROH using air void content of asphalt mixtures. International Journal of Pavement Engineering. ISSN 1029-8436

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Abstract

The comparison pairs of cores (each 100 mm apart) from 68 reinstatements sites from various parts of the UK revealed that, the compounding consequences of generic non-homogeneous characteristics of hand laid recipe mixed materials (specified in Specification for the Reinstatement of Openings in Highways (SROH)) and high likeliness of being biased during air void (AV) testing makes the coring method extremely unreliable with very low repeatability and reproducibility. The wide-ranging maximum density reported in every instance in the comparison pair coring experiments meaningfully rationalizes the distorted homogeneity of materials. Although not only maximum density but also bulk density of adjacent cores located only 100 mm apart were found to be varied in the case of every pair in this study. Furthermore, the in situ performance shown by from 50 reinstatements after experiencing 1.5–10 years real-life ageing from various parts of the UK predictably indicates that either the linkage between the reinstatement with non-compliant AV and its impact on footways durability is non-proven or the reported AV content is extremely over estimated. At 95% level of significance, there exists enough evidence to conclude that, due to high uncertainty, very low repeatability and reproducibility and poor reliability with high chances of bias, the assessment of hand laid reinstatement work by AV testing will expose both the contractor and the client to unacceptable risk. © 2017 Informa UK Limited, trading as Taylor & Francis Group

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Pavement Engineering on 8th January 2017, available online: http://www.tandfonline.com/10.1080/10298436.2016.1260131
Uncontrolled Keywords: 0905 Civil Engineering
Subjects: T Technology > TE Highway engineering. Roads and pavements
Divisions: Civil Engineering
Publisher: Taylor & Francis
Date Deposited: 27 Apr 2017 09:32
Last Modified: 27 Apr 2017 09:32
DOI or Identification number: 10.1080/10298436.2016.1260131
URI: http://researchonline.ljmu.ac.uk/id/eprint/6308

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