ORCID Profile
0000-0002-5770-0062
Current Organisations
Loughborough University
,
University of Queensland
,
Queensland University of Technology
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Road transportation and freight services | Transport engineering | Transportation logistics and supply chains |
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2018
Publisher: Elsevier BV
Date: 09-2019
Publisher: American Society of Civil Engineers (ASCE)
Date: 09-2021
Publisher: Elsevier BV
Date: 09-2019
Publisher: Informa UK Limited
Date: 27-11-2020
Publisher: Elsevier BV
Date: 2024
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 09-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2023
Publisher: Hindawi Limited
Date: 2016
DOI: 10.1155/2016/5618427
Abstract: This research characterizes the performance of various plant-produced asphalt concrete mixtures by dynamic modulus | E ∗ | test using asphalt mixture performance tester (AMPT). Marshall designed specimens of seven different mixtures were prepared using the Superpave gyratory compactor and subjected to sinusoidal compressive loading at various temperatures (4.4 to 54.4°C) and loading frequencies (0.1 to 25 Hz). A catalog of default dynamic modulus values for typical asphalt concrete mixtures of Pakistan was established by developing stress-dependent master curves separately, for wearing and base course mixtures. The sensitivity of temperature and loading frequency on determination of dynamic modulus value was observed by typical isothermal and isochronal curves, respectively. Also, the effects of various variables on dynamic modulus were investigated using statistical technique of two-level factorial design of experiment. Furthermore, two dynamic modulus prediction models, namely, Witczak and Hirsch, were evaluated for their regional applicability. Results indicated that both the Witczak and Hirsch models mostly underpredict the value of dynamic modulus for the selected conditions/mixtures. The findings of this study are envisaged to facilitate the implementation of relatively new performance based mechanistic-empirical structural design and analysis approach.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Springer Science and Business Media LLC
Date: 25-07-2017
Publisher: Golden Light Publishing
Date: 30-06-2020
Publisher: University of Queensland Library
Date: 2020
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 09-2021
Publisher: Elsevier BV
Date: 07-2023
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2017
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2017
Publisher: Elsevier BV
Date: 11-2020
Publisher: Springer Science and Business Media LLC
Date: 21-05-2022
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 12-2021
Publisher: Wiley
Date: 08-03-2015
DOI: 10.1111/FFE.12297
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 12-2019
Publisher: Springer Science and Business Media LLC
Date: 24-11-2017
Publisher: Elsevier BV
Date: 2024
Publisher: Elsevier BV
Date: 12-2023
Publisher: Airiti Press, Inc.
Date: 09-2018
Publisher: Hindawi Limited
Date: 25-03-2019
DOI: 10.1155/2019/5604197
Abstract: This paper investigates dynamic response, rutting resistance, and fatigue behavior of three stone mastic asphalt (SMA) concrete mixtures selected on basis of nominal maximum aggregate size (NMAS): 25 mm, 19 mm, and 12.5 mm using cellulose fiber added as 0.3% of the total weight of aggregate. Superpave gyratory specimens were fabricated and subjected to the dynamic modulus ( E ∗ ) and flow tests (flow number and flow time) using an asphalt mixture performance tester. The E ∗ test results were employed to develop stress-dependent master curves for each mixture, indicating that the mixture with the NMAS of 25 mm is relatively stiffer than other tested mixtures this mixture also exhibits excellent strength against rutting failure. In addition, fatigue parameter, which is derived from dynamic response and phase angle, is determined, and results reveal that 12.5 mm NMAS mix has relatively better resistance to fatigue than other selected mixtures. Furthermore, nonlinear regression model specifications were utilized to predict accumulated strains as a function of loading cycles. Also, a flow number model is developed that predicts the rutting behavior of mixtures, and results suggest that model predicted and observed outputs of 25 mm SMA mix are found to be very close. The results of this study help in understanding the performance and behavior of cellulose fiber-added stone mastic asphalt concrete mixtures under varying simulated temperature and stress levels, which can be used in areas where the premature failure of flexible pavements is often observed. The testing protocol employed in this study will also help in evaluating pavement performance using Mechanistic-Empirical Pavement Design Guide.
Publisher: Elsevier BV
Date: 12-2020
Publisher: Informa UK Limited
Date: 20-05-2022
Publisher: Elsevier BV
Date: 05-2018
Publisher: Elsevier BV
Date: 07-2021
Publisher: Springer International Publishing
Date: 15-06-2017
Publisher: Springer Science and Business Media LLC
Date: 30-01-2016
Location: Pakistan
Location: United Kingdom of Great Britain and Northern Ireland
Location: Pakistan
Start Date: 02-2024
End Date: 01-2026
Amount: $126,839.00
Funder: Australian Research Council
View Funded Activity