EFFECT OF VERTICAL NON-HOMOGENEITY IN PAVEMENT STRUCTURAL LAYER MODULI ON NON-DESTRUCTIVE EVALUATION
This paper presents an analytical examination on the effect of vertical non-homogeneity in pavement structural layer moduli on Falling Weight Deflectometer (FWD) non-destructive evaluation. Two typical cases of non-homogeneous layer moduli are considered. From the non-homogeneous layer moduli, two types of weighted average moduli are obtained for each pavement structural layer. One is the type of mean layer moduli and the other is the type of backcalculated layer moduli associated with the conventional FWD non-destructive testing. The pavement structural performance is further evaluated by using the non-homogeneous layer moduli and the associated weighted average layer moduli. From this study it is found that the global response of the non-homogeneous pavement layers can be approximated by using the backcalculated layer moduli. However, the critical strains in the non-homogeneous pavement layers can not be accurately evaluated by using the homogeneous pavement layers associated with the two types of weighted average layer moduli.
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Corporate Authors:
Minnesota Department of Transportation
395 John Ireland Boulevard
St Paul, MN United States 55155 -
Authors:
- Yue, Z
- Svec, O J
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Conference:
- 4th International Conference, Bearing Capacity of Roads and Airfields
- Location: Minneapolis, MN
- Date: 1994-8-17 to 1994-8-21
- Publication Date: 1994
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 109-122
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Serial:
- Volume: 1
Subject/Index Terms
- TRT Terms: Analysis; Backcalculation; Evaluation; Falling weight deflectometers; Impacts; Mean (Statistics); Nondestructive tests; Pavements; Structures
- Uncontrolled Terms: Moduli; Vertical
- Old TRIS Terms: Analytical method; Layers; Mean; Non-homogeneity; Structural
- Subject Areas: Bridges and other structures; Data and Information Technology; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 00728635
- Record Type: Publication
- Files: TRIS, STATEDOT
- Created Date: Nov 27 1996 12:00AM