- Ph.D., University of Illinois, 1985
- M.S.C.E., University of Illinois, 1980
- B.S.C.E., University of Illinois (Honors), 1978
Dr. Janssen works in the area of Construction Materials with an emphasis on portland cement concrete and constructability-related issues. He teaches undergraduate laboratory courses for both the Department of Civil Engineering (CEE363, Construction Materials) and the Department of Construction Management (CM323, Methods and Materials II), as well as a senior-level constructability course (CEE425, Reinforced Concrete Construction). He works closely with the students involved with the ASCE Concrete Canoe, and teaches a course for a subset of the concrete canoe team that develops the mixtures and cross-section for the canoe in accordance with the current year's rules and regulations (CEE428, Lightweight Cementitious Materials).
Dr. Janssen's research focuses on the durability and physical properties of portland cement concrete. Recently he has been looking at the use of recycled concrete fines (such as the fines produced by diamond grinding pavements) to improve the performance of portland cement concrete mixtures containing significant amounts of supplementary cementitious materials.
Honors and awards
- Listed as an Outstanding Instructor, University of Illinois, 1982.
- Listed as an Excellent Instructor, University of Illinois, 1982-84.
- Fred Burggraf Award for Excellence in Highway Research for Researchers 30 Years or Younger, for paper “Dynamic Test to Predict Field Behavior of Filter Fabrics Used in Pavement Subdrains,” Transportation Research Board, Washington, D.C., 1984. 14
- Presidential Young Investigator, presented to “the Nation’s most outstanding and promising young science and engineering faculty” by National Science Foundation, Washington, D.C., 1987.
- K.B. Woods Award for Outstanding Paper in the Field of Design and Construction of Transportation Facilities, for paper “The Effect of AC Overlays on D-Cracking in PCC Pavements,” co-authored with Dr. B.J. Dempsey. Presented by Transportation Research Board, Washington, D.C., 1987.
- Appointed Chair of Transportation Research Board Committee A2E01, Performance of Concrete, 1990.
- Selected as Secretary of RILEM TC-IDC, 1997
- Selected as the Braun Intertec Visiting Professor, University of Minnesota, 1998-99 academic year.
- Rated Best Speaker at the Minnesota Concrete Council’s Tenth Annual Concrete Seminar, St. Paul, Minnesota, for the lecture on “Pumping Air-Entrained Concrete”, 1999.
- Selected for Project Panel, NCHRP Project D18-10, 2001.
- Selected to Attend Third Annual Teaching Academy “Institute for Teaching Excellence”, 2001.
- Elected as a Fellow of the American Concrete Institute, 2003.
- Nominated for the University Distinguished Teaching Award, University of Washington, 2004.
- Nominated as a Favorite Professor in the UW Alumni Association’s poll of the class of 2006, Winter, 2006.
- Invited to serve on American Concrete Institute (ACI) Committee on Awards for Papers (CAP), Subcommittee SC2 “Wason Medal for Materials Research” 2007