01333241

Component

https://doi.org/10.3141/2226-11

http://scholar.google.com...hang&publication_year=2011

Cementitiously stabilized materials (cement-stabilized base–subbase, lime–fly ash stabilized subgrade, etc.) are widely used in roadway pavements by state agencies. Their use is a cost-efficient and environmentally friendly way to recycle industrial by-products. In the current "Mechanistic–Empirical Pavement Design Guide" developed under NCHRP Project 1-37A, cementitiously stabilized layers are assumed not to contribute to the total permanent deformation of the pavement. Such an assumption may lead to a design for an inadequate base thickness, especially when a thin asphalt concrete layer or pavements subject to heavy traffic loading are used. In this study, a unified permanent deformation model developed for various pavement materials was used to simulate the permanent deformation behavior of cementitiously stabilized materials in flexible pavements. The proposed model was implemented into the ABAQUS program through a UMAT subroutine. The finite element (FE) model was calibrated by analyzing the permanent deformation results from six accelerated pavement test sections. A shift factor of 1.13 was obtained to account for the condition differences between the laboratory permanent deformation test and the field. The FE model and the calibrated shift factor were then used to predict the rut depths of two selected low-volume roads. Good agreement was found between the predicted and measured data.

01353811

11-1237

English

0000-0002-6308-0912

pp 104-110

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167369

Print

Figures (7) ; References (13) ; Tables (5)

Accelerated tests; Base course (Pavements); Cement; Field tests; Finite element method; Flexible pavements; Laboratory tests; Low volume roads; Mathematical models; Pavement design; Rutting; Stabilized materials; Subbase (Pavements); Thickness; Traffic loads

ABAQUS (Computer program); Mechanistic-Empirical Pavement Design Guide

Cement stabilized base

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Feb 17 2011 5:44PM

• Analysis of Perpetual Pavement Experiment Sections in China
• Bootstrapping Procedure to Determine Convergence in Monte Carlo Simulations
• Calibration of Distress Models from the "Mechanistic–Empirical Pavement Design Guide" for Rigid Pavement Design in Argentina
• Calibration of the "Mechanistic–Empirical Pavement Design Guide" for Flexible Pavement Design in Arkansas
• Continuously Reinforced Concrete Pavement: Identification of Distress Mechanisms and Improvement of Mechanistic–Empirical Design Procedures
• Effect of Concrete Strength and Stiffness Characterization on Predictions of Mechanistic–Empirical Performance for Rigid Pavements
• Enhancing "Mechanistic–Empirical Pavement Design Guide" Rutting-Performance Predictions with Hamburg Wheel-Tracking Results
• Estimation and Validation of Gaussian Process Surrogate Models for Sensitivity Analysis and Design Optimization: Based on the "Mechanistic–Empirical Pavement Design Guide"
• Improvements to Modeling of Concrete Slab Curling by Using NIKE3D Finite Element Program
• Minnesota Road Research Data for Evaluation and Local Calibration of the "Mechanistic–Empirical Pavement Design Guide"’s Enhanced Integrated Climatic Model
• New Laboratory-Based Mechanistic–Empirical Model for Faulting in Jointed Concrete Pavement
• Sampling-Based Sensitivity Analysis of the "Mechanistic–Empirical Pavement Design Guide" Applied to Material Inputs
• Structural Analysis of Pervious Concrete Pavement
• Thirty-Year Performance Evaluation of Two-Layer Concrete Pavement System
• Toward Implementation of the "Mechanistic–Empirical Pavement Design Guide" in Latin America: Preliminary Work in Chile