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Title:

PERMEABILITY MEASUREMENT OF BASE MATERIALS USING FALLING-HEAD TEST APPARATUS

Accession Number:

00755173

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309064600

Abstract:

The development of a new falling-head procedure for laboratory permeability measurement of pavement base materials is described. The main advantage of the falling-head test over the conventional constant-head test is its ability to determine permeability properties of the test material at different levels of hydraulic gradients in a single test. The test setup is simpler and the test duration is much shorter. Each test takes only a few minutes to complete. A large number of tests have been conducted with the proposed procedure on different materials, including compacted crushed stones, glass spheres, and cement stabilized base materials. The falling-head test results were verified by performing constant-head permeability tests on the same specimens at different hydraulic gradients. Analysis of the falling-head test data revealed that the relationship between specific discharge and hydraulic gradient over the range studied could not be represented by a single linear relationship as stated by Darcy's law. The proposed approach can be a useful tool for determining the drainage properties of base materials within the range of hydraulic gradients encountered in actual pavements.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1615, Applications of Emerging Technologies in Transportation.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Fwa, T F
Tan, S A
Chuai, C T

Pagination:

p. 94-99

Publication Date:

1998

Serial:

Transportation Research Record

Issue Number: 1615
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309064600

Features:

Figures (4) ; References (7) ; Tables (7)

Uncontrolled Terms:

Cement treated bases; Time savings

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; I42: Soil Mechanics

Files:

TRIS, TRB, ATRI

Created Date:

Oct 30 1998 12:00AM

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