Pacific Wok is a Japanese-style dine-in or takeout restaurant with a unique look and feel. For the project, the owner wanted to remodel an existing restaurant space into a new Pacific Wok. In order to keep the same look as his other restuarant, he wanted to remove the tile and have the concrete finished.
Concrete contractor Polished Concrete Images Inc., Sauk Rapids, Minn., received a call on a Monday that the owner wanted to proceed with polished concrete. On Tuesday, the general contractor removed the tile, and on Wednesday a jobsite meeting was held to discuss scheduling and to give Polished Concrete a look at the floor without the tile. The project began on Thursday and was completed by the next day, allowing the general contracting to stay on schedule.
To complete the work, a three-man crew used two HTC 800 grinding machines connected to Eramator vacuums. They used diamond tools from Concrete Polishing Solutions, HTC, and Gran Quartz. This mix of tools allowed them to create a polishing process that was job-specific.
On Thursday, the first step was removing the remaining tile mastic from the floor. The crew used a 40 grit metal bonded tool from Concrete Polishing Solutions, which removed all the remaining mastic and exposed the aggregate in the concrete. Next, the nail holes, post holes, and other damaged areas were filled with Rapid Set Cement from CTS Cement. The product has a quick drying time, so grinding continued right away. Following the 40 grit, 80 grit and 150 grit metal bonded tools from HTC were used. They removed the previous scratches and prepared the floor for a densifier application of Consolideck LS from Prosoco. The floor was allowed to dry overnight.
On Friday, the crew ground off the densifier using a 150 grit metal bonded tool, followed by 100, 200, and 400 resin bonded tools from Gran Quartz. After the 400 resin tool, "Forrest Green" acetone dye from Ameripolish was applied, followed by 800 and 1500 resin bonded tools from Gran Quartz. LS Guard from Prosoco was applied to give the floor added protection.
The project presented many challenges that had to be overcome to produce a high-quality polished concrete floor. The patches from all the voids needed to be filled in such a way that they could be ground quickly and still match the existing floor. The edges needed special attention during mastic removal to avoid damaging the floor below. The floor beneath the mastic was very uneven, so special attention was given during the first grinding stages.