00232434

Component

http://onlinepubs.trb.org...rbbulletin/254/254-002.pdf

PROOF-ROLLING OF SUBGRADES IS BEING USED BY STATE HIGHWAY DEPARTMENTS TO CHECK THE ADEQUACY OF NORMAL COMPACTION AND TO CORRECT ANY DEFICIENCIES THAT MAY EXIST. PROOF-ROLLING IS AN EXCELLENT TOOL, BUT THERE IS A GROWING TENDENCY TO LOOK ON PROOF-ROLLING AS A PANACEA THAT WILL END ALL COMPACTION PROBLEMS. THIS IS A FALSE APPROACH, AS PROOF-ROLLING WILL FIND AND CORRECT DEFICIENCIES ONLY UNDER CERTAIN CONDITIONS OF MOISTURE. THIS PAPER SHOWS THE CASES WHERE PROOF-ROLLING WILL BE EFFECTIVE AND THOSE CASES WHERE IT WILL NOT. THE PAPER ALSO CONTAINS INFORMATION THAT CAN BE USED TO ESTABLISH DESIRABLE ROLLER CHARACTERISTICS AND THE AMOUNT OF ROLLING THAT SHOULD BE USED FOR VARIOUS CONDITIONS. /AUTHOR/

No 254, pp 12-22, 14 FIG, 1 TAB, 13 REF 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

01413735

English

1960

Highway Research Board Bulletin

Compaction; Density; Moisture content; Pneumatic equipment; Rollers; Rolling; Subgrade (Pavements); Variables

Geotechnology; Highways

TRIS, TRB

Aug 15 2004 2:43AM

• FULL-SCALE COMPACTION STUDIES AT THE BRITISH ROAD RESEARCH LABORATORY
• HYDRAULIC FILL COMPACTION
• RAPID DETERMINATION OF LIQUID LIMIT OF SOILS BY FLOW INDEX METHOD