01020268

Component

https://doi.org/10.3141/1967-12

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

Vertical movements calculated with the new design method for six case study cross sections in three different climatic zones in Texas were compared with the swelling movement predicted by the potential vertical rise (PVR) method, which has been used by the Texas Department of Transportation. Vertical movements included both swelling and shrinking. A review of assumptions that underlie the PVR method shows that two assumptions are unrealistic because they are not based on sound analytical principle and the three others cannot be supported by subsequent findings on actual Texas pavements or on soils of the United States. Pavement treatments were selected to provide acceptable predicted performance at high levels of reliability, and the vertical movements were calculated both at the edges of pavements and beneath the outer wheelpaths. The case studies were based on a variety of traffic levels, site conditions, and sample testing. The pavement treatments included lime- stabilized and cement-stabilized layers, removal and replacement with inert layers, and vertical and horizontal moisture barriers. The results of the case studies showed that the PVR method overpredicts the swelling movement that can be expected with the new method and does not predict shrinkage movement, which is important because that is an indicator of future longitudinal shrinkage cracking along the pavement edge.

01037970

English

pp 112-120

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099765

Print

Figures (3) ; References (9) ; Tables (4)

Base course (Pavements); Calcium oxide; Case studies; Cement treated soils; Design methods; Longitudinal cracking; Moisture barriers; Pavement cracking; Pavement design; Pavement performance; Shrinkage; Soils; Swelling soils

Potential vertical rise

Texas

Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I42: Soil Mechanics

TRIS, TRB, ATRI

Mar 3 2006 11:05AM

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• Laboratory Evaluation of Untreated and Treated Pavement Base Materials: Repeated Load Permanent Deformation Test
• Resilient Modulus Estimation System for Fine-Grained Soils
• 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