Field Evaluation of Geogrid-Reinforced Pavement Systems on Soft Subgrades

Lawton, Evert C.; Jones, Adam C; University of Utah. Department of Civil and Environmental Engineering; Mountain-Plains Consortium; North Dakota State University

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Field Evaluation of Geogrid-Reinforced Pavement Systems on Soft Subgrades

2024-08-01
By Lawton, Evert C. ; Jones, Adam C

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English

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Details:

Creators:

Lawton, Evert C. ; Jones, Adam C

Lawton, Evert C. ; Jones, Adam C Less -
Corporate Creators:

University of Utah. Department of Civil and Environmental Engineering ; Mountain-Plains Consortium ; North Dakota State University

University of Utah. Department of Civil and Environmental Engineering ; Mountain-Plains Consortium ; North Dakota State University Less -
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Geogrids Geosynthetics Load Tests Pavement Performance Soft Soils Subgrade (Pavements)
Publication/ Report Number:

MPC-24-539
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

Mountain-Plains Consortium
Abstract:

A research section was built within a major highway to compare the performance of different geosynthetic-reinforced pavement systems. The first test section contained no geosynthetic reinforcement. The second section was reinforced with a layer of geogrid. In the third test section, geotextile was placed on the subgrade. In the fourth test, section a second layer of geogrid was placed on top of the geotextile at the subgrade. Each section was instrumented in two locations with moisture sensors, temperature sensors, and strain gages installed on the geosynthetics. Automated cyclic plate load tests were performed using two loading procedures. Static loads were applied using a loaded dump truck. The results of the study were mixed due to variability of the base and subbase thicknesses and densities within the test sections. Permanent deflections and strains in geosynthetics recorded during the plate load tests were small. Due to the inconsistencies in the test sections, analysis of the benefit of the geosynthetics was inconclusive. Significant correlations between predicted CBR values and measured strain in the geosynthetics were discovered. Significant correlations between geosynthetic tensile properties, their depth in the pavement system, and total strain in the geosynthetics were also found.
Format:

PDF
Funding:

MPC-635
Collection(s):

University Transportation Centers
Main Document Checksum:

[+]

urn:sha-512:238b0f8f31b5988c6fe0f2316d0ff281ac2d19e6a0ff99e7ec470ba213603a2ec29c5b2197040388af3851b5e74351422b1aba855c23bcd0527734965d0f5de3
Download URL:

https://rosap.ntl.bts.gov/view/dot/79678/dot_79678_DS1.pdf
File Type:

[PDF-13.08 MB]