Cutting Wet: Slurry Management
Future vs. History:
Wet vs. Dry
When concrete polishing was first introduced in Europe it was primarily done dry, from initial grinding steps using 2 – 4 different metal grits all the way thru as many as 6 different honing and polishing grits. Since the birth of polished concrete back then down to today, both concrete technology and our understanding of what effect abrasives were having on the concrete surface and on indoor air quality has advanced.
Today concrete experts agree that concrete that has been profiled, honed and polished using a wet method creates a better concrete surface, encourages abrasives to last longer and eliminates any microscopic concrete silica from going airborne – harming indoor air quality, construction workers or future occupants as HVAC ducts are kept clean.
Aiming for the best quality polished concrete and indoor air quality requires a wet process
Wet profile cuts and honing creates the best environment during the project, and leaves the concrete surface and air ducts in the best condition possible.
Green Umbrella promotes a wet cut method on every polished concrete project. Does this mean flooding the floor with inches of standing water? No! Using a base layer of water enables the accomplishment of basic concrete polishing goals:
- Highest quality finished product. Polished concrete, unlike other factory produced floor coverings is crafted on-site. Wet grinding, profiling and honing leads to better polished concrete every time in comparison to a simple dry method.
- Safer environment. Zero microscopic particles of silica are sent airborne when cutting wet. This creates the safest environment when grinding in factories (sensitive equipment) or grocery stores (food) ensuring the environment is protected from contamination.
- Longer lasting abrasive tooling. Water lubricates during profiling and honing to add life to abrasives used during concrete polishing.
- Promotes even distribution of Green Umbrella GreenCut – the industries leading liquid cutting agent.
- Facilitates a faster profile, hone and polish process. Dry grind methods do not refine the concrete surface sufficiently to allow for 1-3 abrasive methods that produces ultimate polished concrete.
Cutting wet has a learning curve, especially for contractors who have been cutting dry for years. Like transitioning from the pager to the smart phone there will be features you love, elements you miss and days you hate it and wish you could go back in time… but processing concrete wet is the future and the differences in product crafted are too big to ignore.
Polished concrete completed using a wet process will Cut your Labor, Cut your Downtime and Cut your Environmental Impact.
Here are some keys to success:
- Do not create inches of standing water. GreenCut and profile cuts will have success when completed using the proper amount of water, making wet processing suitable in existing facilities.
- Complete wet cutting in an area, allowing the GreenCut to remain during all profile cuts before cleaning the thicker slurry developed during profile or grinding cuts.
- Pick up thicker slurry using a designated, specifically designed slurry recovery vacuum.
- Limit water used during honing. The honing process requires substantially less water than profiling or grinding.
- Autoscrub the floor making sure to clean residual slurry, making color introduction more successful.
- Use slurry recovery bags in an easy to remove construction site location where slurry can dry and be placed in dumpsters or be removed safely.
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