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Mr. Hansen is an individual consultant specilizing in RCC, concrete, and soil-cement applications for dams. He is probably the most recognized author, lecturer, and consultant on RCC
and soil -cement for new dams and the rehabilitation of existing dams in the United States. Prior to establishing his private practice in early 2009, Mr. Hansen worked as a consultant for Schnabel Engineering for nearly 12 years and the Portland Cement Association (PCA) for nearly 37 years. His studies and experience on what works and what does not work on previously constructed projects is invaluable in the design of future projects.
Mr. Hansen has given more than 400 presentations on RCC dams throughout the United States, but also by invitation in Canada, Mexico, Brazil, Chile, Australia, China, Argentina, India, Spain, Turkey and Peru. Ken was co-chairman of both specialty conferences on RCC sponsored by three ASCE divisions-Construction, Materials, and Geotechnical-held in San Diego in 1988 and 1992. At the 1992 RCC III conference, he presented the keynote address, “RCC for Rehabilitation of Dams in the USA-An Overview.” He has also presented one of the initial special invited lectures at the International Symposium on RCC Dams in Spain in 1995 and again in 2003, the second National Seminar on RCC Dams in Brazil in 1996, and the International RCC conference in China in 1999, the RCC
Seminar, 2008 Dams and Pavements in Australia, and the International Forum on
Concrete in Mexico in 2009.
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His consulting assignments on RCC, concrete and soil-cement for dams now total more than 70 in 11 countries. Five of these dams are greater than 300 ft (91m) high, including the 630 ft (217.5m) high Longtan Dam in China.
Ken Hansen is the primary author of the book “Roller-Compacted Concrete Dams” published by McGraw-Hill. He also edited or co-edited all three ASCE books consisting of proceedings from specialty conferences on RCC. He has also authored or co-authored more than 50 papers on RCC for dams and dam rehabilitations.
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One of Ken’s main contributions to the development of RCC
and soil-cement
for new dams and the rehabilitation of existing dams has been to take education
to the construction site. He has organized and taught at 22 RCC dam short course/tours in twelve
states, while with PCA, Schnabel Engineering and as an individual consultant. In
addition, he conducted ten similar soil-cement short course/tours while with PCA.
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He was the course director and featured lecturer at the International RCC Dams Seminar and Study Tour. Five such educational programs were successfully conducted, starting in 1998. Ken
was also the course director for the two-day RCC 2009 Dams Short Course and Taum Sauk Dam Tour held in St. Louis, Missouri,
which attracted 158 attendees from 9 countries and 27 US States.
Mr. Hansen has given more than 400 presentations on RCC dams throughout the
United States, but also by invitation in Canada, Mexico, Brizil, Chile,
Australia, China, Argentina, India, Spain, Turkey and Peru. Ken was co-chairman
of both specialty conferences on RCC sponsored by three ASCE
divisions-Construction, Materials, and Geotechnical-held in San Diego in 1988
and 1992. At the 1992 RCC III conference, he presented the keynote address, "RCC
for Rehabilitation of Dams in the USA-An Overview". He has also presented one of
the initial special invited lectures at the International Symposium on RCC Dams
in Spain in 1995 and again in 2003, the second National Seminar on RCC Dams in
Brazil in 1996, and the International RCC conference in China in 1999, the RCC
Seminar, 2008 Dams and Pavements in Australia, and the International Forum on
Concrete in Mexico in 2009.
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Mr. Hansen’s experience with soil-cement water control design and construction predates his work with RCC and starts with slope protection
for Ute Dam, New Mexico, in 1963. His lecturing on soil-cement now also totals nearly 250 presentations in the United States, Canada, Brazil and Australia. He is the author of the 88 page ICOLD Bulletin 54 "Soil-Cement for Embankment Dams" (1986).
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Ken Hansen is co-author of the book "Roller-Compacted Concrete Dams" published by McGraw-Hill (copyright 1991). He has edited or co-edited all three ASCE's books on RCC. They are "Roller-Compacted Concrete" a compilation of ten papers presented at the 1985 ASCE Spring Convention in Denver, "Roller Compacted Concrete II", the 487 page proceedings of the 1988 specialty conference in San Diego and "Roller Compacted Concrete III", the 509 page proceedings of the 1992 specialty conference, also conducted in San Diego.
Ken is also the author of the 88-page ICOLD Bulletin "Soil-Cement for Embankment Dams".
Mr. Hansen was the author or co-author of eleven technical papers on soil-cement
design and construction as well as being retained on PCA to update several of
its publications on soil-cement. He was a contributor to the ICOLD Bulletin "Roller Compacted Concrete" and USSD's "Annotated Bibliography on Roller-Compacted Concrete Dams" and "RCC Construction for Dam Rehabilitation."
The papers he has written or co-authored on RCC, soil-cement, or concrete dams include:
Roller-Compacted Concrete
Dinchak, W.G. & Hansen, K.D., "Consider Roller-Compacted Concrete for Hydro-Power Facilities," 5th Miami International Conference on Energy Sources, Miami Beach, Florida, December 1982.
Hansen, K.D., "Roller-Compacted Concrete Developments in the USA," Water Power and Dam Construction, January 1986.
Hansen, K.D. and France, J., "RCC-A Dam Rehab Solution Unearthed," Civil Engineering – ASCE, September 1986.
Hansen, K.D, "Roller Compacted Concrete Dams Worldwide". Water Power and Dam Construction Handbook, February 1987.
Tarbox, G.S. & Hansen. K.D., "Planning Design and Cost Estimates for RCC Dams," Roller Compacted Concrete II, ASCE, New York, February 1988, pp. 21-38.
Hansen, K.D., "Performance of Roller Compacted Concrete Dam Rehabilitations," Proceedings of Association of State Dam Safety Officials (ASDSO) 1989 Annual Conference, Albuquerque, New Mexico, October 1989.
Hansen, K.D., "The Use of Roller Compacted Concrete in USA Dam Construction," presented at NRMCA 19990 Convention, Perth, Australia, September 1990.
Jackson, H.E., Forrest M. P. and Hansen, K.D., "Rebuilding Quail Creek Dike With RCC," Proceedings of Association of State Dam Safety Officials (ASDSO) 1990 Annual Conference, New Orleans, Louisiana, October 1990.
Hansen, K.D., "Advantages of Roller Compacted Concrete Dams," RCC Newsletter, Vol. 7 No.1, Portland Cement Association Skokie, IL, Spring/Summer 1991, PL 332.01W.
Hansen, K.D., "RCC for Rehabilitation of Dams in the USA - An Overview," Roller Compacted Concrete III, ASCE, New York, February 1992.
Arnold. T.E., Feldsher, T.B., & Hansen, K.D., "RCC Test Specimen Preparation – Developments Toward A Standard Method," Roller-Compacted Concrete III, ASCE, New York, February 1992.
Hansen, K.D., "Roller-Compacted Concrete for Overtopping Protection of Embankment Dams," Proceedings of USCOLD 1992 Annual Meeting, Fort Worth, Texas, April 1992.
McLean, F.G. and Hansen, K.D., "Roller Compacted Concrete for Embankment Overtopping Protection," Geotechnical Practice for Dam Rehabilitation, ASCE New York, Raleigh, North Carolina, April 1993.
Hansen, K.D. "Using Roller-Compacted Concrete for Cost-Effective Dam Modification," Hydro Review, April 1993.
McLean, F.G. and Hansen, K.D., "RCC: Rehab Results," Civil Engineering - ASCE, August 1993.
Hansen, K.D. "Built in the USA – RCC Dams of the 1990s," Water Power and Dam Construction, April 1994.
Hansen, K.D. "Dam Rehabilitation Using Roller Compacted Concrete in the USA," Proceedings of Canadian Dam Safety Conference, Winnipeg, Manitoba, October, 1994. pp 281-293.
Hansen, K.D."Roller Compacted Concrete Overtopping Protection in the USA," Canadian Dam Safety Newsletter, Vol. 6, No. 2, April 1995.
Hansen, K.D. & McLean, F.G. "Roller Compacted Concrete for Overtopping Protection: An Overview," Proceedings ASCE International Conference on Water Resources Engineering, San Antonio, Texas, August 1995. Vol. 2 pp. 1016-1020.
Hansen, K.D. "Roller-Compacted Concrete Dams in the USA: 1995," Proceedings of International Symposium on Roller Compacted Concrete Dams, Santander, Spain, October 1995 Vol. 3.
Hansen, K.D. "Roller Compacted Concrete: A Civil Engineering Innovation," – Concrete International, March 1996, pp. 49-53.
Hansen, K.D. "Erosion Resistance of Roller-Compacted Concrete," presented at ACI 1996 Spring Convention, Denver, Colorado, March 1996.
Hansen, K.D., "Roller Compacted Concrete for Overtopping Protection-1996," Proceedings Association of State Dam Safety Officials (ASDSO) Southeast Regional Conference Nashville, Tennessee. June 1996, pp 77-83.
Hansen, K.D. "Roller-Compacted Concrete Dams in the USA Lessons Learned – 1995," Relatos, II Seminario National De Concreto Compactado Com Rolo, Curitiba, Brazil, 1996, pp. 1-21.
Hansen, K.D. "Diverging Views on RCC," International Water Power & Dam Construction, August 1996.
Hansen, K.D. "Combining Function and Aesthetics in RCC Dams and Dam Rehabilitations," Proceedings 36th Annual Conference Association of Conservation Engineers, Savannah, Georgia. Oct. 1997.
Hansen, K.D. "Current RCC Dam Activity in the USA," Hydropower & Dams Issue Five, 1997.
Hansen, K.D. "Form Follows Function in RCC Dams Too," International Journal on Hydropower & Dams Volume Five, Issue Three 1998.
Bass, R.P. and Hansen, K.D. "RCC Overtopping Protection Turns 50," Proceedings of Association of State Dam Safety Officials (ASDSO) 1998 Annual Conference, Las Vegas, Nevada, October 1998.
Hansen, K.D. "Combing Function with Aesthetics in RCC Dam Projects," Proceedings of Association of State Dam Safety Officials (ASDSO) 1998 Annual Conference, Las Vegas, Nevada, October 1998.
Hansen, K.D., Mclean, F.G. & Forbes, B. "Shear Strength of Roller Compacted Concrete Dams," Proceedings of International Symposium on Roller Compacted Concrete Dam-China RCC ’99 Chengdu, China, April 1999.
Bass, R.P. and Hansen, K.D. "Dam Safety Modifications Using Roller-Compacted Concrete," 19th Annual USCOLD Lecture Series, Atlanta, Georgia, May 1999.
Hansen, K.D. and Bass, R.P. "How Old Dams are Reborn," International Water Power & Dam Construction, June 1999.
Hansen, K.D.
"Development of RCC Overtopping Protection in the Western United States"
Proceedings of the West Regional Conference of the Association of State Dam
Safety (ASDSO), Santa Fe, New Mexico, April, 2005.
Hansen, K.D. "Roller Compacted Concrete Dams – Entering the 21st Century in Asia," Presented at International Conference on Global Power Requirements for the 21st Century, Jabalpur, India, Nov. 1999
Hansen, K.D. "What Will the Chinese Think of Next? – Recent Developments in RCC Dams Design and Construction," Proceedings of Association of State Dam Safety Officials (ASDSO) 2000 Annual Conference, Providence, Rhode Island, September 2000.
Hansen, K.D. "The Many Faces of RCC," Civil Engineering-ASCE, April 2001.
Bass, R.P. and Hansen, K.D. "RCC for Replacement Dams-Why?" Proceedings of Association of State Dam Safety Officials (ASDSO) 2001 Annual Conference, Snowbird, Utah. September 2001.
Hansen, K.D. "Erosion and Abrasion Resistance of Soil-Cement and Roller-Compacted Concrete," Portland Cement Association. Skokie, Illinois, R&D Bulletin 126, 2002.
Hansen, K. D. "Roller Compacted Concrete Dams - Why?" Presented at Seminar on Roller Compacted Concrete Dams, New Delhi, India, May 2002.
Arnold, T.E. and Hansen, K.D. "Seepage Performance of RCC Dams: Then and Now," 22nd Annual USSD Lecture Series, San Diego, California, June, 2002.
Hansen, K.D. and Kahler, C.M. "RCC Tests, Testing and Test Sections – Lessons Learned," Proceedings of Association of State Dam Safety Officials (ASDSO) 2002 Annual Conference, Tampa, Florida, September 2002
Hansen, K.D. "RCC Overlays For Increasing Spillway Capacity - Lessons Learned," Proceedings of 23rd Annual USSD Conference, Charleston, South Carolina, April 2003.
Hansen, K.D., "RCC Use in Dam Rehabilitation Projects," Proceedings of International Symposium on Roller Compacted Concrete Dams, Madrid, Spain, November 2003.
Hansen, K.D. and Kahler, C.M. "RCC Tests, Testing and Test Sections – Lessons Learned" The Journal of Dam Safety, ASDSO, Lexington, Kentucky, Winter 2004.
Arnold, T.E. and Hansen, K.D. "Improvement and Advances in Seepage Control Systems for RCC Dams," Hydro Review, February 2004.
Hansen, K.D. and Bass, R.P. "Twenty Years of RCC Overtopping Protection – Then and Now" Proceedings of Association of State Dam Safety Officials (ASDSO) 2004 Annual Conference, Phoenix, Arizona, September 2004.
Choi, Y.K. and Hansen, K.D. “RCC/Soil-Cement: What’s the Difference?” Journal of Materials in Civil Engineering, ASCE, July/August 2005.
Hansen, K.D. and Campbell, D.B., “RCC Overtopping Protection – What are the Design Options,” Proceedings of Association of State Dam Safety Officials (ASDSO), 2006 Annual Conference, Boston, Massachusetts ,September, 2006
Fitzgerald, T.J., Hansen, K.D., and Bowen, J., “Grout Enriched RCC – The Past and Future in the USA,” Proceedings of the 27th Annual ASDSO Annual Conference, Austin, Texas, September 2007.
Forbes, B.A., Hansen, K. D., and Fitzgerald, T. J. “State of the Practice- Grout Enriched RCC in Dams” Proceedings of the 28th Annual USSD Conference, Portland, Oregon. April – May 2008.
Hansen, K.D. “ Design considerations for small RCC dams’ The International Journal on Hydropower & Dams” Volume Fifteen, Issue 3, 2008.
Hansen, K. D. “ Surviving the First Five Years of RCC Dams in the U. S. “ Proceedings of Association of State Dam Safety Officials (ASDSO), 2008 Annual Conference, Indian Wells, California, September 2008.
Hansen, K.D. “Lessons from the past,” International Water Power & Dam Construction, November 2008.
Hansen, K.D. "Why Do Dams Need to be Replaced? and Why With RCC? Presented at RCC 2009 Short Course and Tour, St. Louis, Missouri September 2009.
Concrete Dams
Hansen, K.D., "Cost of Mass Concrete in Dams," Portland Cement Association, Skokie, Illinois, 1979, MS 260 W.
Hansen, K.D. & Roehm, L.H., "Response of Concrete Dams to Earthquakes," Water Power and Dam Construction, April 1979.
Soil-Cement
Holtz, W.D. & Hansen, K.D., "The Use of Compacted Soil-Cement in Water Control Structures," transactions of 12th International Congress on Large Dams, Mexico City, Mexico, Q44 R13 pp. 251-278, 1976.
Hansen, K.D. & Avera, J.K., "Dams That Never End," Water Power and Dam Construction, March 1978.
Wulliman, J.T. & Hansen, K.D., "Design and Construction of Soil-Cement Drop Structures," presented at 1990 National Conference on Hydraulic Engineering, ASCE, San Diego, California, August 1990.
Hansen, K.D. "Soil-Cement Is Big In Texas Water Projects," Concrete International, January 1991.
VanRiessen, G.J. & Hansen, K.D., "Cement-Stabilized Soil for Coal Retaining Berms," Grouting, Soil Improvement, and Geosynthetics, ASCE, New York, February 1992.
Clem, D.A., Hansen, K.D. and Kowalsky, J.B. "Flowable Backfill for Pipeline Bedding at the Denver International Airport," Controlled Low-Strength Materials, American Concrete Institute SP-150, Detorit, 1994. pp. 87-96.
Hansen, K.D. and Lynch, J.P. "Controlling Floods in the Desert with Soil-Cement," Proceedings of Second CANMET/ACI International Symposium on Advances in Concrete Technology. Las Vegas, Nevada, June 1995.
Richards, D.L. and Hansen, K.D., "Soil-Cement for Channel Bank Stabilization," Proceedings of 1998 International Water Resources Engineering Conference, Memphis, Tennessee, August 1998.
Hansen, K.D. and Schexnayder, C., "Construction of Stair-Stepped Soil-Cement Bank Protection," Proceedings of GEO Institute GeoDenver 2000 Specialty Conference, ASCE, Denver, Colorado, August 2000.
Hansen, K.D. "Erosion and Abrasion Resistance of Soil-Cement and Roller-Compacted Concrete," Portland Cement Association, Skokie, Illinois, R&D Bulletin 126, 2002.
Choi, Y.K. and Hansen, K.D. “RCC/Soil-Cement: What’s the Difference?” Journal of Materials in Civil Engineering, ASCE, July/August 2005. |