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Title:

Seasonal Effects on Structural Performance of Alternative Road-Strengthening Systems in Saskatchewan, Canada

Accession Number:

01123047

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Efficient rural road transport is a critical element of the Saskatchewan economy. Unfortunately, a significant portion of the Saskatchewan road network is experiencing increased rates of deterioration due to their service age, as well as increasing commercial transport pressures. This is particularly the case for the secondary road system. The Saskatchewan Ministry of Highways and Infrastructure has recently set the mandate to upgrade a significant portion of secondary road system to primary weight limit load carrying capacity. However, given the recent rising costs associated with conventional road strengthening systems and a reduction in available granular aggregate material, the Saskatchewan Ministry of Highways and Infrastructure has been investigating alternative road strengthening systems including granular overlays, cement stabilization, fiber stabilization, and ionic stabilization. This paper presents the results of a multi-year field study of the structural performance and seasonal effects across six different road strengthening systems constructed on both primary (Pavement A) and secondary (Pavement C) road grade structures. Based on the findings of this study, cementitious strengthening and conventional granular overlays with and without geogrid reinforcement have provided structural enhancement of both secondary and primary standard road grades. It was also confirmed that pavement structures constructed on Pavement A road grades perform significantly better structurally relative to secondary weight limit road grades. Ionic stabilization and flax straw fibers reinforced structures yield a low structural performance relative to the other test sections constructed. This study also demonstrated that seasonal climatic effects can decrease the structural integrity of road strengthening systems by up to 14 percent on Pavement A road grades and by up to 47 percent on Pavement C road grades.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-2667

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Berthelot, Curtis F
Stuber, Erin
Podborochynski, Diana
Marjerison, Brent L
Gerbrandt, Ron R
Warrener, Stu

Pagination:

15p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Photos; References; Tables (3)

Uncontrolled Terms:

Load carrying capacity

Geographic Terms:

Saskatchewan

Subject Areas:

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

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-2667

Files:

TRIS, TRB

Created Date:

Jan 30 2009 7:02PM