As with any concrete in the laboratory, conduct appropriate testing and make
the necessary adjustments to your mixture proportions. If high strength is
your goal, don't be afraid to take out water and add HRWRA. Just remember
that higher doses of HRWRA will probably retard your setting time.
The Silica Fume Association
38860 Sierra Lane, Lovettsville, VA 20180
Tel: 540.257.4224 Fax: 540.822.9456
