Title: SEISMIC%20DILATOMETER
1SEISMIC DILATOMETER
FLAT DILATOMETER
EUROCODE 7 (1997). Standard Test Method, European
Committee for Standardization Part 3 Design
Assisted by Field Testing, Section 9 FLAT
DILATOMETER TEST (DMT), 9 pp.
TC16 (1997). The DMT in soil Investigations, a
report by the ISSMGE Technical Committee tc16 ON
Ground Property, Characterization from in-situ
testing, 41 pp.
ASTM (2002). Standard Test Method D6635-01,
American Society for Testing and Materials The
standard test method for performing the Flat
Dilatometer Test (DMT), 14 pp.
2WAYS OF INSERTING THE BLADE
Pushed by truck
Pushed by a drill rig
Driven by a drill rig
Driven or pushed by a static/dynamic penetrometer
Pushed from a fixed platform
Driven by SPT Tripod
TORPEDO INSERTION METHOD
3SDMT TEST RESULTS
DMT TABULAR OUTPUT
4SETTLEMENT PREDICTION
DISTORTIONS IN CLAY
5DETECTING SLIP SURFACES IN A SLOPE
SLIDING
1
RECONSOLIDATION
3
(NC STATE)
REMOULDING
2
INSPECT KD
4
PROFILE
COMPACTION CONTROL
MDMT (kPa)
DMT reflects more sensitively compaction benefits
and modulus increase
Depth Z(m)
LIQUEFACTION RECOMMENDATIONS
Seismicity of the area amax / g Kd,min
Nonseismic / 1.7
Low seismicity 0.15 4.2
Average seismicity 0.25 5.0
High seismicity 0.35 5.5
Kd limits for safety vs liquefaction For
magnitude 7.5 earthquake
?H RELAXATION BEHIND A LANDSLIDE
? Horizontal Stress
kPa
Absolute Elevations (m)
1
1
2
3
2
3
6Cu comparisons
Field Vane at Skeena Ontario Canada
National Site BOTHKENNAR UK
National Site FUCINO ITALY
kPa
kPa
0
5
Z (m)
10
Z (m)
15
20
A.G.I., 10th ECSMFE Firenze 1991 Vol. 1, p. 37
Nash et al., Géotechnique, June 1995, p. 173
Mekechuk 1983
Cu in Recife Clay BrazilUniv. of Pernambuco
Research Site 1
Malaysian Clays
Wong, J.T.F. Dobie, M.J.D. 1990
Coutinho et al., Atlanta ISC 1999
M comparisons
M in Tokyo Bay Clay
SITES IN VIRGINIA, U.S.A.
ONSOY Clay (NORWAY)
CONSTRAINED MODULUS M (MPa)
CONSTRAINED MODULUS M (MPa)
Z (m)
Geotechnical Research Center Kiso-Jiban
Consultants Co., Tokyo
Norwegian Geotechnical Institute (1986)."In Situ
Site Investigation Techniques and interpretation
for offshore practice" Report 40019-28 by S.
Lacasse, Fig. 16a, 8 Sept 86
FAILMEZGER, 1999
7SDMT SISMOGRAMS
Z(m)
AS RECORDED
RE-PHASED
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
8SDMT REPEATABILITY
Z m Vs m/s Vs m/s Vs m/s
10.0 101 101
10.5 99 99
11.0 98 98
11.5 99 100
12.0 97 96
12.5 94 94
13.0 99 99
13.5 95 95
14.0 103 103
14.5 117 117 117
15.0 98 98 98
15.5 115 115
16.0 114 114
16.5 113 113
17.0 122 123
17.5 119 119
18.0 128 128
18.5 127 127
19.0 125 125
19.5 119 119
20.0 124 124 124
Each Vs corresponds to a single blow of the
hammer
Differences of Vs 1 m/s
VALIDATION
SDMT at FUCINO Research Site June 2004
9DMT WORLD COMMUNITY
NORTH AMERICA 1. GPE, Inc.- Mr. Paul Bullock Gainesville, FL 2. Schmertmann Crapps, Inc.-Dr .John Schmertmann Gainesville, FL 3. Mobile Augers Ltd.-Mr. Nestor Zacharko Edmonton, ALBERTA 4. Site Investigation Services-Mr. John Hayes Peterborough, ONTARIO 5. Clarkson College-Dr. Ambin Huang Potsdam, NY 6. Purdue University West Lafayette, IN 7. Terra Technologies-Mr. Rick Klopp Richmond, TX 8. Ellis Associates-Mr. Steve Weaver Jacksonville, FL 9. Colorado State University-Dr. John Nelson Fort Collins, CO 10. North Carolina State University-Dr. Roy Borden Raleigh, NC 11. National Research Council of Canada-Dr .J.M.Konrad Ottawa, ONTARIO 12. Carleton University-Prof.Gunther Bauer Ottawa, ONTARIO 13. Northwestern University-Dr. Ray Krizek Evanston, IL 14. Ground Engineering Inc.-Mr .John DeMonte St. Louis, MO 15. Pennsylvania Dept. of Transportation-Mr. Ken Rush Harrisburg, PA 16. University of British Columbia-Dr. R. Campanella Vancouver, BRITISH COLUMBIA 17. Geotechnique Consultants-Mr. Jorge Pachas Irvine, CA 18. University of Florida / Geot.Eng.-Dr. David Bloomquist Gainesville, FL 19. Williams Earth Sciences, Inc.-Mr. Keith Bennett Clearwater, FL 20. University of Florida-Dr. Byron Ruth Gainesville, FL 21. Law Engineering-Mr. Chris Giese Chantilly, VA 22. Earth Engineering Sciences, Inc.-Mr. Sam Gupta Baltimore, MD 23. Hogentogler Co.-Mr. Tom Nolan Gaithersburg, MD 24. Ontario Hydro-Mr.Chris Cragg Toronto, ONTARIO 25. Dominion Soils Investigatation-Mr. Mike Fabius Thunder Bay, ONTARIO 26. Iowa State University-Dr. Richard Handy Ames, IA 27. Louisiana State University-Dr. Mehmet Tumay Baton Rouge, LA 28. California Polytechnic Institute-Dr. Jay Natale San Luis Obispo, CA 29. University of Texas-Dr. Ken Stokoe Austin, TX 30. University of Michigan-Dr. Roman Hryciw Ann Arbor, MI 31. U.S. Bureau of Reclamation-Mr. Jeffrey Farrar Denver, CO 32. Alabama Power Co.-Mr. Clayton Gore Birmingham, AL 33. University of New Hampshire-Dr. Jean Benoit Durham, NH 34. University of Wisconsin / Madison-Dr. Peter Bosscher Madison, WI 35. Florida DOT / District 3-Mr. William Knight Chipley, FL 36. Florida DOT / District 5-Mr. Tom Malerk Deland, FL 37. Dominion Soils Investigation-Mr. Tom O'Dwyer Windsor, ONTARIO 38. University of California / Berkeley Berkeley, CA 39. T.L.B. Associates-Mr. Tom Brown Crofton, MD 40. University of North Carolina-Dr. Janardhan Charlotte, NC 41. Driggers Engineering Testing-Mr. Jamie Driggers Clearwater, FL 42. ATEC Associates-Mr. Andy Frank Marietta, GA 43. KCI Technologies-Mr. Jay Burtis Jessup, MD 44. Florida DOT / Research Materials-Dr. Robert Ho Gainesville, FL 45. Florida DOT / District1-Ms. Terri Puckett Bartow, FL 46. University of Massachusetts-Dr. Alan Lutenegger Amherst, MA 47. Ardaman Associates-Dr. Robert Martin Orlando, FL 48. Cornell University-Dr. Fred Kulhawy Ithaca, NY 49. Virginia Polytechnic Institute Blacksburg, VA 50. 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Dr. Lacava Geologist Potenza, ITALY 128. ICOSEM Trapani, ITALY 129. ACES - ARAB CENTER ENGINEER STUDIES Dubai, CENTER ARAB EMIRATS 130. Dr. Bartolucci Geologist Pescara, ITALY 131. LJUBLJANA UNIVERSITY Ljubljana, SLOVENIA 132. GEOTEST BRNO Brno, CZECH REPUBLIC 133. SACCHETTO S.P.G. Adria, ITALY 134. PARAHYANGAN CATHOLIC UNIVERSITY Bandung, INDONESIA 135. YOOKU ENGINEERING Seoul, KOREA 136. NATIONAL INSTITUTE OF OCEAN TECHNOLOGY Chennai, INDIA 137. GEOINZENIRING Ljubljana, SLOVENIA 138. Dr. Balachowski Gdansk, POLAND 139. TIANJIN URBAN CONSTRUCTION INSTITUTE Tianjin, China 140. SAMSUNG CORPORATION Seoul, Korea 141. MCCONNELL CONSULTING PTY LTD Brisbane, Australia 142. GCT ALPHA - Dr. Peiffer Schoten, Belgium 143. MOTA-ENGIL S.A. Canelas, Portugal