IN SITU STATES OF COMPACTION OF STRUCTURAL BACKFILL
Structures are usually designed on assumed values of the dry density and the peak angle of shearing resistance of the backfill. However, whilst the use of backfills with significantly higher material properties may produce a stronger structure and lower settlements, the superior backfill could be seriously detrimental to an integral bridge construction, as integral bridges are reliant on the expansion and contraction of the bridge deck being accommodated by rotation of the bridge abutment, instead of by expansion joints or bearings. During demolition of a redundant bridge abutment, data were collected to investigate the states of compaction of the in situ granular fill. Results of tests on the fill material demonstrated that higher values of the internal angle of friction were produced by higher states of compaction. The implications of the findings on the design of integral bridges are discussed and recommendations made on potential ways of minimising these effects. (A)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09684107
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Corporate Authors:
TRL
Crowthorne House, Nine Mile Ride
Wokingham, Berkshire United Kingdom RG40 3GA -
Authors:
- STEELE, D P
- SNOWDON, R A
- Publication Date: 1996
Language
- English
Media Info
- Features: References;
- Pagination: 15 p.
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Serial:
- TRL REPORT 206
- Publisher: TRL
- ISSN: 0968-4107
Subject/Index Terms
- TRT Terms: Abutments; Backfilling; Bridge decks; Coefficient of internal friction; Compaction; Field tests; Granular materials; Soils; Tests; Trench backfill
- ITRD Terms: 3424: Abutment; 3482: Bridge deck; 5775: Coefficient of internal friction; 5904: Compaction (state of); 2801: Embankment; 4107: Granular; 6226: In situ; 4156: Soil; 6255: Test
- Subject Areas: Construction; Geotechnology;
Filing Info
- Accession Number: 00731802
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, ATRI
- Created Date: Feb 27 1997 12:00AM