01031491

Component

https://doi.org/10.3141/1967-08

http://scholar.google.com...dson&publication_year=2006

A software tool was developed to estimate the resilient modulus of fine-grained subgrade soils. The subgrade resilient modulus is a key factor for use in mechanistic–empirical pavement design methods. However, for routine design use, the test method is too expensive and difficult to perform. Resilient modulus estimation software was developed with expert system approaches. Information entered by the user is first examined for reasonableness and accuracy. Then, data searching processes are initiated, and more than 30 estimation models can be invoked, depending on the availability of input data. All results were evaluated on the basis of certainty rules, such as how well data meet limitations existing during the model’s original development environment. The user is given four alternate methods on which to base the choice of a resilient modulus that is most appropriate for the site: one based on certainty rules and three based on statistical methods.

01037970

English

pp 69-77

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099765

Print

Figures (7) ; References (38)

Estimating; Fine grained soils; Modulus of resilience; Regression analysis; Software; Subgrade (Pavements)

Mechanistic-Empirical Pavement Design Guide

Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics

PRP, TRIS, TRB, ATRI

Mar 3 2006 10:28AM

• Asphalt Multi-Integrated Rollers and Steel Drum Compactors: Evaluating Effect of Compaction on Permeability of Asphalt Pavements
• Comparative Design Case Studies of Pavement Performance on Expansive Soils
• Design Model for Roughness and Serviceability of Pavements on Expansive Soils
• Duration of Spring Thaw Recovery for Aggregate-Surfaced Roads
• Effectiveness of Open-Graded Base Layer on Subgrade Moisture Regime and Overall Pavement Performance
• Estimating Thermal Conductivity of Pavement Granular Materials and Subgrade Soils
• Estimation of Expected Moisture Contents for Pavements by Environmental and Soil Characteristics
• Evaluation of Resilient Modulus Model Parameters for Mechanistic–Empirical Pavement Design
• Field Monitoring of Moisture Variations Under Flexible Pavement
• Hauling with Full Axle Weights and Reduced Tire Pressures on Weight-Restricted Roads in British Columbia
• Implementation of Spring Load Restrictions Using a Deflection-Calibrated Thaw Index
• Investigations of Environmental and Traffic Impacts on "Mechanistic-Empirical Pavement Design Guide" Predictions
• Laboratory Evaluation of Untreated and Treated Pavement Base Materials: Repeated Load Permanent Deformation Test
• Safety and Cost-Effectiveness of Approach Guardrail for Bridges on Low-Volume Roads
• Safety Effectiveness of Stop Control at Ultralow-Volume Unpaved Intersections
• Two-Dimensional Moisture Flow–Soil Deformation Model for Application to Pavement Design