Development of Probabilistic Rutting Curve from Wheel Tracking Device Data

Author(s): Priyansh Singh and Aravind K. Swamy
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 520-527
Total Pages: 8
Language : English

Abstract: Wheel tracking devices have been used to measure rutting susceptibility of asphalt concrete
under laboratory conditions. This equipment essentially measures rut depth under repeated
loading applied through wheel. Even under extremely controlled conditions, measured rut
depth shows a significant scatter. Hence currently used approach of using average rut depth
approach fails to account for this scatter. This paper presents a probabilistic approach that
accounts for the scatter in rutting curve used for prediction of rutting potential. For this purpose,
several specimens were prepared using unmodified VG 30 binder and midpoint gradation as
per Indian specifications. These specimens were tested for rutting susceptibility using wheel
tracking device. The data thus obtained was stochastically analysed to validate the probabilistic
approach. It was found that Francken model fits deformation well with number of passes data.
The analysis shows that rutting curves can be fitted to lognormal distribution satisfactorily.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00