00471886

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http://onlinepubs.trb.org...trr/1986/1099/1099-005.pdf

https://scholar.google.co...vell&publication_year=1986

The characterization of the surface erosion of rigid pavement subbase and shoulder materials is described. Three testing methods were used in the study: (a) the rotational shear device, (b) a jetting test for unstabilized (noncohesive) materials, and (c) a brush test on the effect of six factors on the surface erosion of portland cement- and asphalt-stabilized materials. A statistically designed procedure was used to minimize the number of test samples and to model the interaction of material properties and climatic influences on surface erosion. A number of lean concrete samples were also tested using the brush test; and a rotational shear device was used to obtain the critical shear stress of portland cement-stabilized materials. The brush test provided relative erosion results in terms of weight loss. These results were used to investigate the effects of different variables on the weight loss of stabilized materials and to characterize the erosion of these materials. Brush test results were correlated with rotation shear test results, which were compared with conditions expected to develop under the pavement. The results show that unstabilized materials are not capable of resisting surface erosion in a concrete pavement. Curves were developed for stabilized materials to assist in the selection of subbases and shoulders with low erodibility using standard laboratory tests. These curves include the performance of stabilized materials in different climatic conditions.

Publication of this paper sponsored by Committee on Rigid Pavements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418828

pp 45-57

1986

Transportation Research Record

0309041201

Print

Figures (11) ; Maps (1) ; References (32) ; Tables (4)

Climate; Concrete pavements; Erosion; Forecasting; Laboratory tests; Pumping (Pavements); Subbase (Pavements); Test procedures

Subbase

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

TRIS, TRB

Jul 31 1987 12:00AM

• ANALYSIS OF CONCRETE PAVEMENT PERFORMANCE AND DEVELOPMENT OF DESIGN PROCEDURES
• CONCRETE PAVEMENT JOINT STIFFNESS EVALUATION
• MECHANICAL AND ENVIRONMENTAL STRESSES IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS
• NEW CONCEPTS IN PRESTRESSED CONCRETE PAVEMENT