Donald J. Janssen

Donald J. Janssen

Associate Professor Emeritus
Construction Engineering


Office: More 121G
Phone: (206) 543-9655

PhD, University of Illinois, 1985
MSCE, University of Illinois, 1980
BSCE (with Honors), University of Illinois, 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.

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Research Interests

  • Construction Materials
  • Pavements