HYDRAULIC CHARACTERISTICS OF THE PUMPING OF CONCRETE PAVEMENTS
HYDRAULIQUE DU PEMPAGE DES CHAUSSEES EN BETON
This article studies the dynamic role of the water in the erosion of the surface of the subbase. The data on which the study is based are qualitative information collected on existing pavements, the slabs of which have lifted. Hydraulic characteristics calculations are given, the results of which converge to enable the conditions under which the phenomena occur, to be defined. A model of a cavity under the slab was needed to show clearly the relation between the hydraulic parameters (rate of water evacuation, instantaneous pressure), the effects of heavy traffic (deflection, loading rate) and plane dimensions of the cavity. One of the main aims of this research is to characterize each material in the subbase and improved subgrade in terms of an erodability threshold. (TRRL)
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Corporate Authors:
Laboratoire Central des Ponts et Chausees (LCPC)
Boulevard Lefebvre 58
Paris Cedex 15, France F-75732 -
Authors:
- Nguyenory, JPKI
- Publication Date: 1978-1-2
Language
- French
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: p. 118-129
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Serial:
- Bulletin de Liaison des Lab des Ponts et Chaussees
- Issue Number: 93
- Publisher: Laboratoire Central des Ponts et Chausees (LCPC)
Subject/Index Terms
- TRT Terms: Base course (Pavements); Concrete pavements; Deflection; Erosion; Flow; Fluid dynamics; Hydraulics; Joints (Engineering); Pressure; Pumping (Pavements); Pumps; Rigid pavements; Slabs; Speed; Subbase (Pavements); Subgrade (Pavements); Water
- Uncontrolled Terms: Longitudinal; Subbase
- ITRD Terms: 5586: Deflection; 5275: Erosion; 5430: Flow (fluid); 2998: Joint (structural); 9039: Longitudinal; 5412: Pressure; 2964: Rigid pavement; 2961: Roadbase; 3093: Slab pumping; 5408: Speed; 2950: Subgrade; 4355: Water
- Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 00309730
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Files: ITRD, TRIS
- Created Date: Jun 26 1980 12:00AM