Admix for countertop concrete
Posted by Scott from Leiden, OT, NL on April 1, 2007
Hello Bruce,
I am a builder living in The Netherlands and I am experimenting with concrete countertops and I was wondering if you had any suggestions what I could use to make the tops denser and harder and whether I should use fiber reinforcement as well. I would appreciate any advice in this field and maybe a supplier in the Netherlands. Thank you for your time and maybe for your expertise.
Sincerely,Scott Berry
Use a low water to cementitious ratio to increase the density and strength of the concrete mix. Use chemical admixtures (Type F admixture, as per ASTM C 494) to enable you to use concrete at low water to cementitious ratio. You can also use mineral admixtures like silica fume to reduce porosity, increase strength and density.
Contact a construction chemical supplier like Sika in Netherlands.
