Accession Number:

AD0411579

Title:

SMALL SCALE MODEL STUDIES OF PRESTRESSED RIGID PAVEMENTS FOR MILITARY AIRFIELDS. PART II. SINGLE-WHEEL LOADINGS ON PRE-TENSIONED AND POST TENSIONED SLABS,

Descriptive Note:

Technical rept.,

Corporate Author:

OHIO RIVER DIV LABS CINCINNATI

Personal Author(s):

Report Date:

1963-05-01

Pagination or Media Count:

1.0

Abstract:

The purpose of the over-all study was to develop, through the combined use of small-scale models and theorectical analysis, relationships between wheel load and bending moment for loadings in both the elastic and the inelastic ranges of be havior of theprestressed slabs and to apply these relationships to the formulation of a ra tional approach to the design and evaluation of prestressed rigid pavements for military air fields. The models consisted of 0.20-inch thick prestressed slabs of Hydrocal gypsum cement sup ported by a 12-inch thick layer of natural rubber. Single strands of music wire positioned at mid depth provided a rectangular system for prestres sing the slabs. Both pre-tensioned and post tensioned systems of prestressing were adapted to the models. This report presents the results of tests made to observe the behavior of prestressed slabs loaded statically to failure by means of single circular footprints of various sizes. Twelve pretensioned and fifteen post-tensioned slabs were constructed and tested. With the ex ception of two cases, the prestressing for this group of slabs was accomplished using 0.020-inch diameter music wires spaced 0.60 inch center to center both longitudinally and transversely as the stressing tendons. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE