In this episode of the Concrete Logic podcast, we brought on Brent Rollins and Scott DiLoreto from Spray-Lock to discuss colloidal silica. If you are like most folks, you probably never heard of colloidal silica (CS). It is a product that can be sprayed on concrete during concrete placement or long after the concrete is cured. It can even be used as an additive to ready-mix concrete. Once CS is applied to the concrete, it penetrates and fills up the microscopic (nano) voids it finds in the conc...