J. Elsen

Determination of the wc ratio of hardened cement paste and concrete samples on thin sections using automated image analysis techniques

J. Elsen, N. Lens, T. Aarre, 1995 .

Emergency Sinkhole Mitigation and Void Investigation of Abandoned Railroad Tunnel along U.S. 24, Tennessee Pass, Colorado & ndash; Case Study

J. Elsen, Kanaan Hanna, S. Hodges, 2013 .