01333200

Component

https://doi.org/10.3141/2226-05

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

The hierarchical approach for specifying design inputs is a key feature of the new "Mechanistic–Empirical Pavement Design Guide" (MEPDG). The three levels of design input for the strength and stiffness characterization of portland cement concrete (PCC) range from a Level 1 laboratory measurement of modulus of elasticity and modulus of rupture at 7, 14, 28, and 90 days to a Level 3 estimation of the 28-day unconfined compressive strength. This paper evaluates the effect of design input level for PCC strength and stiffness properties on MEPDG performance predictions for jointed plain concrete pavements (JPCPs). The effects of the different PCC stiffness and strength design input levels on predicted faulting, transverse cracking, and international roughness index (IRI) are evaluated for eight PCC mixtures in several JPCP design scenarios. Faulting was found to be insensitive to the MEPDG PCC input level, transverse cracking was extremely sensitive, and IRI was only moderately sensitive. In particular, the results showed that the Level 3 input combination of a measured 28-day modulus of rupture and a measured 28-day modulus of elasticity yielded predicted distresses that were consistently in closest agreement with predictions that used Level 1 inputs. Reliable and accurate 28-day modulus of rupture and modulus of elasticity values can therefore be used as less-expensive and more-practical alternatives to full Level 1 stiffness and strength characterization in JPCP analysis and design. When full Level 1 characterization is performed, high-quality testing is mandatory for avoiding small anomalies in measured values that can cause physically unrealistic predictions by the MEPDG of stiffness and strength gains over time.

01353811

11-3339

English

pp 41-50

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167369

Print

Figures (7) ; References (15) ; Tables (2)

Compressive strength; Cracking; Modulus of elasticity; Modulus of rupture; Pavement design; Pavement distress; Pavement performance; Portland cement concrete; Rigid pavements; Stiffness; Transverse cracking

International Roughness Index; Mechanistic-Empirical Pavement Design Guide

Jointed plain concrete pavements

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

PRP, TRIS, TRB, ATRI

Feb 17 2011 6:29PM

• 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
• 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"
• Finite Element Model for Rutting Prediction of Flexible Pavement with Cementitiously Stabilized Base–Subbase
• 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