PREDICTION OF ASAPHALT PAVEMENT RUTTING USING FINITE ELEMENT THEORY Department of Civil Engineering, Faculty of Engineering Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia. ABSTRACT The finite element method is capable of simulating the observed rutting of pavements subjected to axle load. Finite element modeling of pavements can be used directly to estimate primary response parameters without resorting to potentially costly field experiments. The objective of this study is to develop a finite element model to simulate the laboratory testing of asphalt mixes in (HWRT) for rutting. The nonlinear viscoplastic behaviour analysis of asphalt mixes, was adopted in this study. Hamburg Wheel Rut Tester (HWRT) data, was used in this study to predict the rutting in each mix. A, m and n material parameters from (HWRT), are required for FE program ,ANSYS, in order to calculate the rutting for various five mixes, under a uniform loading pressure of 500 kPa. SOLID45 Element was used for the 3-D modeling. Three-dimensional axisymmetric models results shows that there is a reasonable agreement between the predicted and the laboratory measured rutting. the comparison between the result that obtained from ABAQUS and the result that obtained from ANSYS showed the ability of the presented model for prediction asphalt pavement rutting. Keyword: Flexible pavement; rutting; Finite Element modeling; Hamburg Wheel Rut Tester. INTRODUCTION One of the major distresses of flexible pavement is Rutting. It is defined as the longitudinal depressions along the wheel paths caused by the progressive movement of materials under traffic loading in the asphalt pavement layers or in the ... ... middle of paper ... ... of Transportation, Federal Highway Administration, Turner-Fairbank Highway Research Center, TFHRC Publication. Texas DOT 2003 Texas Department of Transportation, Pavement Construction Specifications, Draft 10/03/03, 2003. Ludomir Uzarowski 2006 The Development of Asphalt Mix Creep Parameters and Finite Element Modeling of Asphalt Rutting A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Doctor of Philosophy in Civil Engineering Waterloo, Ontario, Canada. ANSYS user's manual-version 9.0, (2004). ANSYS, Inc. is a UL registered ISO 9001:2000 Company. Release 9.0 UP 2004/ 11/ 04. NCHRP 2004a Guide for Mechanistic-Empirical Design of New and Rehabilitated Pavement Structures, National Cooperative Highway Research Program, NCHRP, Part 2– Design Inputs, Chapter 2 Material Characterization”.
Doing so would cause the asphalt to harden and therefore make it unusable. “Because asphalt cannot be stored, it is not susceptible to being inventoried” (Justia, 2000).
Following the collapse of the I-35 Bridge, other bridges in the country, with similar construction designs, were scrutinized. According to federal statistics, more than 70,000 of the 607,363 or roughly 12 percent of the bridges in the United States are classified as “structurally deficient.”
Tire manufacturers sometimes publish a coefficient of rolling friction (CRF) for their tires. You can use this number to calculate how much force it takes to push a tire down the road. The CRF has nothing to do with how much traction the tire has; it is used to calculate the amount of drag or rolling resistance caused by the tires. The CRF is just like any other coefficient of friction: The force required to overcome the friction is equal to the CRF multiplied by the weight on the tire. This table lists typical CRFs for several different types of wheels.
The Web. 22 Apr. 2009. The 'Standard' of the 'Standard'.
With this tread depth, you can use your truck on multiple surfaces without getting stuck. Also, the tread patterns offer enough stability and support for your vehicle.
Sealcoating: Sealcoating is one of the best — and most economical — ways to obtain the longest life possible for asphalt pavement.
ISO/IEC 12207 is an international standard for software life-cycle processes. It aims to be the standard that defines all the tasks required for developing and maintaining software.
The Web. 14 Apr. 2014. The 'Standard' of the 'Standard'. Uenishi, Tetsuo. A.
This can be simplified to Vrock=WDR Where D is the distance from the road at the point of contact in terms of R, the Radius. That is to say, that the velocity at the top of the tire would be Vrock=W(2R) =2Vcenter
The circle of traction is a important racing concept with applications from physics. From newtons equation f=ma we know that the more force we apply to an o...
Reinforced concrete is stronger than basic concrete. Steel reinforcing bars known as rebar is incorporated in the concrete structure to act together in resisting the force. The steel reinforcing bars absorbs tensile and compression because plain conc...
9. Lofgren, G.Q. "Quality System Registration: A Guide to Q90/ISO 9000 Series Registration." Quality Progress, May 1991, p. 37. 10.
I’m amazed by this discovery too. Squatting down, I poke at the asphalt with my finger, leaving an imprint of my finger that slowly pushes back to its original shape. I laugh, the feeling of it is curiously addicting. The rubber feels like bouncy play-doh, pushing back against my fingers. Isaiah and I are hooked. We spend all day experimenting. We put ants on it. We put grass on it. We see who can pull off parts of it. As the sun shines harshly through the clear Wisconsin sky, I resolved that it was too hot to continue.
During my under graduation I have learnt only about basics of pavement materials and different layers of pavements. It was only after studying graduate courses I realized how limited my knowledge was and I need to work very hard and explore more in this vast field. During first year of my graduate study I have studied Pavements Materials, Pavement Design and Evaluation, Highway Construction Practices and these graduate courses opened a new paradigm for me to the way I looked at pavement engineering. This prompted me to look at it as a field full of challenges which make it even more dynamic and op...
Restoring and Improving Urban Infrastructure - Engineering Challenges. " EngineeringChallenges.org -. National Academy of Science, 2012. Web. The Web.