CoatingsPro Magazine Supplements

Concrete Dec 2017

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Page 25 of 40

COATINGSPRO CONCRETE COVERED 2017 25 mix time, water and cement ratios, and cure times. Make sure that the floor will be free of other trades while the concrete cures. General contractors may not understand the idea that the facility is the factory and may insist on placing the sched- ule ahead of the curing needs of the floor you are fabricating. While different overlay products may require slightly different circumstances or timing for full curing, it is imperative that the owner's entire team understands the importance of the cure time in the creation of the final concrete overlay floor. How you protect your floor is just as important as how you create your floor. Some overlays can cure within 48 hours of pour and can accept light foot traffic, but you should always avoid using scissor lifts and other heavy equipment on top of curing cement-based overlays. e change in pressure due to heavy loads will affect how the concrete cures underneath it, impacting the color, consistency, and even integrity of the overlay itself. Similar to normal concrete slabs, avoid using tapes and adhesives that prevent vapor transmission through the top of the curing overlay. is will help to avoid discoloration and tape lines from becoming a legacy feature of the floor. ere are also protective products available for architectural finished floors that will allow for heavier foot traffic and even framing activity, if necessary. ey can add a great deal of protection and peace of mind through the construction schedule when used. Many people enjoy creating a range of gloss levels for their overlays. Cement-based systems can be polished to a matte, semigloss, or glossy surface. Unlike a "plastic" or polymer floor, an overlay with cement can also have a densi- fier used to further strengthen the walking surface. However, the floor must be fully refined (aka mechanically processed to achieve the required surface texture grade) to create adequate protection against staining and foot traffic. Without completely processing your surface, the overlay will require constant reapplication of sealers and guards throughout its life cycle. is is not only unsustainable or environmentally friendly, but it also has a direct impact on the floor's perfor- mance. Wear patterns can begin to show, especially in floors that have received color applications, and the floor will lose its original aesthetic. For a floor surface to be fully processed, it will have to be refined wet, turning the top layer of the overlay into a slurry Concrete Overlay When applied properly, cement-based overlays can come in a variety of colors and textures and provide beautiful walking spaces.

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