Cheese curds. Ketchup. Petrified French Fries. Those are just some of the stains DCI soda blasted away on more than 12,000 square feet of concrete sidewalks on the Minnesota State Fairgrounds this summer.
DCI used a process called media blasting to not only get rid of the stains, but remove the existing coating and sealer on the selected sidewalks. The State Fair is testing a new concrete sealer, and called in DCI to help prepare the way.
DCI used two types of ‘media’ for the blasting project: Sodium Bicarbonate (baking soda) and glass beads. Those, according to DCI experts, were the best ways to minimize surface damage to the concrete and remove the concrete sealer. Some companies will use sand blasting or high pressure washing to get the job done, but sometimes that can further damage the concrete surface.
Armed with experience and knowledge, DCI found that those two materials — Sodium Bicarbonate and glass beads — performed best in this case given the existing concrete conditions.
DCI has more than 10 years experience in performing media blasting on projects as an alternative to sand blasting. Our equipment gives us the ability to use a wide variety of blast media depending on the conditions of the concrete. DCI also provides the added value of adjusting air pressure to get the desired results.
What’s next? We’re hoping the Fair will have us clean all the concrete surfaces on the grounds, which — as you might imagine — will get a huge workout during the fair!