Differential rutting in Canterbury New Zealand, and its relation to road camber

Abstract In Canterbury New Zealand, chip seal is the primary surface material for rural state highways. The roads are designed to accommodate various types of traffic; traffic that has grown steadily over the past decade. The growth in dairy and logging, two of New Zealand’s main exports, resulted in a large rise in milk and logging trucks. This significant increase in traffic has led to a significant amount of pavement failure due to rutting which predominantly occurs in the outside wheel path rather than the inside. This paper provides a review and analysis of LTPP data at two rural sites. Data from these sites show more rutting in the outside wheel path than the wheel path close to the crown of the road. Contributing factors observed from the literature are included in this paper and it was shown that the main contributing factor to rutting is load (traffic). Road pavements are constructed to be homogeneous but anecdotally it is known that using camber or a crown will divide the load from traffic more towards the outside wheel. Some general factors that increase the difference are the axle width, and height of the centre of mass, the camber percentage and present rutting depth. Calculations show that the difference in load on the left and right wheel can lead to quite different ESAL values compared to values calculated based on the average load. In fact, an example using Austroads shows that the ESAL value can almost double if actual wheel loads are used. It also shows that there are no other mechanisms that adequately account for this difference.

[1]  Dar-Hao Chen,et al.  Full-scale accelerated pavement testing of texas mobile load simulator , 1998 .

[2]  Andrew Dawson.  Rut Accumulation and Power Law Models for Low-Volume Pavements under Mixed Traffic , 2008 .

[3]  J Patrick,et al.  Adaptation of the Austroads Pavement Design Guide for New Zealand conditions , 2008 .

[4]  C. B. Winkler,et al.  Rollover of heavy commercial vehicles , 1999 .

[5]  Seosamh B. Costello,et al.  A review of the HDM/dTIMS pavement models based on calibration site data , 2006 .

[6]  P D Cenek,et al.  Modelling of extreme traffic loading effects , 2012 .

[7]  Roger Dunn,et al.  A New Approach for Modelling Rutting on the New Zealand State Highways , 2009 .

[8]  Inge Hoff,et al.  MEASUREMENT OF EDGE EFFECTS ON PAVEMENTS WITH THIN ASPHALT SURFACING , 2002 .

[9]  Roger Dunn,et al.  Long-term pavement performance (LTPP) studies in New Zealand: lessons, the challenges and the way ahead , 2004 .

[10]  Sameh Zaghloul,et al.  Comparative Analysis of Long-Term Field Performance of Recycled Asphalt in California Environmental Zones , 2008 .

[11]  Henrikas Sivilevičius,et al.  Research and evaluation of ruts in the asphalt pavement on Lithuanian highways , 2013 .

[12]  T. F. Fwa,et al.  Rutting Prediction of Asphalt Pavement Layer Using C-ϕ Model , 2004 .

[13]  John N. Ivan,et al.  SINGLE AND MULTI-VEHICLE CRASH PREDICTION MODELS FOR TWO-LANE ROADWAYS , 2000 .

[14]  James S. Moulthrop,et al.  Selecting a Preventive Maintenance Treatment for Flexible Pavements , 1999 .

[15]  E. Tutumluer,et al.  Aggregate Morphology Affecting Strength and Permanent Deformation Behavior of Unbound Aggregate Materials , 2008 .

[16]  D N Brown.  Measuring pavement condition data for the establishment of a long-term pavement performance study on New Zealand roads , 2005 .

[17]  J de Pont,et al.  The effect of cross-sectional geometry on heavy vehicle performance and safety , 2004 .

[18]  Sabine Werkmeister,et al.  Performance Tests for Road Aggregates and Alternative Materials , 2008 .

[19]  Musharraf Zaman,et al.  A Laboratory and Statistical Evaluation of Factors Affecting Rutting , 2003 .

[20]  Sharad S. Adlinge,et al.  Pavement Deterioration and its Causes , 2013 .

[21]  Kazushi Sanada,et al.  Independent Braking Force Control for Rollover Prevention of Heavy Duty Vehicles , 2009 .

[22]  Mofreh Saleh,et al.  Investigation of the Effect of Shoulder Properties, Axle Load, and Tyre Pessure on Edge Failure of Thin Surfaced Granular Pavements , 2006 .

[23]  I. Collins,et al.  Geomechanical Analysis of Unbound Pavements Based on Shakedown Theory , 2000 .

[24]  Metcalf,et al.  DESIGN CURVES FOR FLEXIBLE PAVEMENTS BASED ON LAYERED SYSTEM THEORY , 1965 .

[25]  Theunis F. P. Henning,et al.  Pavement deterioration models for asphalt-surfaced pavements in New Zealand , 2008 .

[26]  B Pidwerbesky.  A holistic approach to flexible pavement design improves performance , 2014 .