It happens only once a year. Colorado School of Mines (Golden, CO) hosts a week long short-course on grouting. It’s attended by Who’s Who in the geotechnical grouting industry.
On the afternoon of June 19, 2013, the school hosted a Field Day and participants were able to view a live demonstration of the permeability of different grouts through Sand Column Testing. I’m pleased to announce, US Grout’s Ultrafine Cement excelled over other cement grouts by reaching the top of the sand column (60 inches) in just 80 seconds. No other cement grout came close.