00231005

Component

http://onlinepubs.trb.org...epubs/hrr/1963/1/1-007.pdf

ACCORDING TO THE STANDARD METHOD, THE DESIGN OF A ROAD OR RUNWAY PAVEMENT IS CARRIED OUT AT SATURATED CONDITIONS OF THE SUBGRADE. THE THICKNESS THUS DETERMINED WILL BE UNECONOMICAL IF THE SUBGRADE IS NOT LIKELY TO BE SATURATED IN ACTUAL PRACTICE. IT IS, THEREFORE, NECESSARY TO KNOW THE DEGREE OF SATURATION TO WHICH THE SUBGRADE IS WETTED DURING THE WORST PART OF THE YEAR SO THAT THE DESIGN AT THAT PARTICULAR MOISTURE /BUT NOT HIGHER/ IS CARRIED OUT. WITH THIS OBJECT IN VIEW A COUNTRYWIDE SURVEY WAS CARRIED OUT TO FIND OUT THE DEGREE OF SATURATION OF THE SUBGRADE /MOSTLY UNDER FLEXIBLE PAVEMENT, WHICH FORMS BULK OF THE ROAD MILEAGE IN THE COUNTRY/ AT THE TIME OF RECESSION OF THE MONSOON WHEN SUBGRADE MOISTURE CONDITIONS ARE WORST. THE STUDY INDICATES THAT THE DEGREE OF SATURATION VARIES CONSIDERABLY AND DOES NOT JUSTIFY THE DESIGN OF PAVEMENT AT 100 PERCENT SATURATION OF THE SUBGRADE AT ALL PLACES IN INDIA. /AUTHOR/

No 1, pp 50-65, 5 FIG, 3 TAB, 2 REF, 1 APP 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

01484275

English

1963

Highway Research Record

Environment; Flexible pavements; Pavement design; Percent saturation; Subgrade (Pavements); Surveys

India

Geotechnology; Highways; Pavements

TRIS, TRB

Aug 15 2004 2:40AM

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