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DMA Floors - Polished Concrete Floors

Overview

DMA Floors is certified with a wide variety of manufacturer’s systems used in the polishing process. We have worked on garages, gyms, warehouses, schools, retail facilities and even a cold prep room for Sausage Craft in Richmond using Vexcon's FSR system. We understand the depths of concrete and can help you realize the beauty that lies within your slab.

CLASS NAME SURFACE EXPOSURE, %
A Cement Fines 85 – 95 % Cement Fines
5 – 15 % Fine Aggregate
B Fine Aggregate 85 – 95 % Fine Aggregate
5 – 15 % Blend of Cement Fines and Coarse Aggregate
C Coarse Aggregate 80 – 90 % Coarse Aggregate
10 – 20 % Blend of Cement Fines and Fine Aggregate

Aggregate exposure class denotes the surface exposure after grinding and polishing operations. The density, size and distribution of the aggregates at the surface depends on the concrete mix design and placing and finishing operations. Floor flatness at the time of grinding and polishing operations is an important consideration in selecting the appropriate aggregate exposure class.

Surface exposure percentages are based on visual observation of the overall area of the polished floor.

Illustration of Differences in Class

Caution: This provides a visual representation of the differences in Class A, B and C. This may not represent the polished concrete in your area as it varies based on aggregate type, gradation, size and distribution. Consult with your CPC Polishing Contractor to see reference samples or mockups.

Polished concrete is an elegant, resilient, sustainable alternative to floorcoverings and epoxies. It can be used in a variety of spaces in government / military, corporate / office, educational, healthcare, hospitality, manufacturing, and retail settings. The process provides increased strength over standard concrete as well as most floorcoverings and many resinous systems. With the addition of pigmented stains and decorative saw cuts the look of natural stone, or tiles can be achieved with lower installed, maintenance and life cycle costs. Sealed, stained, and epoxy coated concrete are sometimes confused with polished concrete. While each of these treatments has benefits, none of them perform like polished concrete. Polished concrete mechanically transforms the concrete through the use of hardening agents and grinding with diamond tooling. There are no coatings to chip, scratch, or fail, the shine you see is the concrete.

Polished concrete is the processing of a concrete surface with bonded abrasives to achieve a desired class of aggregate exposure and level of reflective clarity and reflective sheen. Concrete Polishing Council Overview | ASCC (ascconline.org)
Aggretate Exposure Chart(ascconline.org)
Appearance Chart (ascconline.org)
Concrete Polishing Council Maintenance (ymaws.com)