Why Concrete Polishing?

polished concreteIn commercial settings, it’s common to think you need to choose between a practical floor or one that matches your decor. With polished concrete, you get both.

Whether you’re a manufacturing plant or a clothing store, it’s important to be prepped for an influx of people. Polished concrete creates a safe area that’s easy to maintain, and can really accomplish any look you’re going for. See more benefits below:

Commercial and Retail Polished Floor Benefits:

  • Cost Savings: Using the slab on grade as the finished floor surface is more cost effective, maintenance costs are lower.
  • Resistant to Heavy Foot Traffic: No sealer, wax, or coating to wear off
  • Less Maintenance & Longer Service Life: Polished floors are easy to clean, requiring only occasional damp mopping. They also eliminate the need for waxes or coatings as well as the associated labor, time, and expense to apply them. The glossy surface of polished concrete resists the marks of forklift truck tires and staining from oil and chemical spills.
  • Resistant to Moisture Transmission Issues: Polished concrete allows the floor to breathe and eliminates issues that arise with other flooring materials that seal off the concrete, such as tile, etc.
  • High Light Reflectivity: Important for office lobbies, hotels, restaurants, and other public facilities that want to project a bright, clean, professional image. Also saves energy by reducing artificial lighting requirements.
  • Sustainable Flooring Alternative: Polished concrete does not require hazardous coatings, cleaners or adhesives.
  • Easy to Clean: Won’t harbor dust, dirt, or allergens
  • Available in Wide Variety of Colors and Designs

To inquire about polished concrete for your floor, fill out our contact form today!

Scarification at the Philadelphia Parking Authority

How do you remove 1/4 inch of tuff Epoxy/elastomeric Urethane from 350,000 square feet of parking deck on 5 different levels in a timely manner?

Case Study:   Elastomeric Urethane membrane removal at the Philadelphia Parking Authority facility next to the Philadelphia Convention Center, 350,000 square feet

This was a very sensitive project in that the deck needed major restoration and concrete replacement and scheduling was very critical due to the fact that the Philadelphia Convention Center relied on this structure for most of its parking.

During the scarification process the membrane is chipped away using carbide cutters, leaving the concrete with a profile of CSP 6-9, this profile is too rough for some material manufactures so we can diamond-grind the surface to reduce the profile to the material manufacturers requirements. Next, we shot blast the surface to remove any laitance and  micro fracturing caused by the scarification process.  The deck is now ready for material applications.

Check out our pictures of the removal process:

Concrete Preparation 101: Membrane Removal, Grind & Shot Blast

Philadelphia parking garages see heavy traffic, so maintaining proper maintenance is necessary. The main purpose of parking deck membranes is to protect the concrete deck from water and salt intrusion, which can eat away at rebar and the supporting structure.  When the deck is prepared properly and a high performance membrane system applied, it can last from 10 to 20 years.

The General contractor for this project was Melrose Construction, Inc. of North Wales, PA. When Bob DiFerdinando, Project Manager for Melrose, decided on who was going to do the surface preparation, he chose Shot Blast Inc. because of our preparation and membrane removal capabilities.  No other preparation contractor had the necessary equipment and expertise to do this type of work in the time frame allotted. This project turned out to be a major success for Melrose Construction and the Philadelphia Parking Authority.

Be sure to check out our Parking Deck Membrane Removal page for more examples!

UNL Professor Creates De-Icing Concrete

de-icing concrete

Photo courtesy of UNL.

A professor at the University of Nebraska at Lincoln has created a concrete that could make snow shoveling a thing of the past. Since 1997, Dr. Chris Tuan has been developing a special mix of concrete that, when powered,  can safely melt ice.

The mixture is about 80% concrete and 20% steel fibers and carbon particles. A 200 square foot slab of concrete only needs as little power as what is produced by a wall outlet and the electricity is safe to touch. The mixture is being tested by the FAA and could potentially be used for the tarmac at a major airport.

How is it used?

You can see a time lapse video of the concrete being tested here. As you’ll see, the snow piles up outside of the test concrete but the concrete itself remains clear. Although it’s not likely that this cement could be applied to highways, it could be useful in intersections and exit ramps.

Dr. Tuan hopes that one day this technology will be available to the public. He says that one day, this new type of cement could eliminate personal injuries from slipping and falling on a slippery sidewalk. In addition, it could mean that your shoveling days are over.

Read the full story from the University of Nebraska-Lincoln here.


How to Prep and Install a High Performance Flooring System

This project took place at Audi of West Chester. The Audi project was 24,000 square feet of 5,000 psi concrete. Watch the timelapse video of the project below & learn more about the project.

Here’s the process we followed for this job:

  1. We routed and cleaned all control joints and coated with the vapor block then filled with a grey two-component polyurea.
  2. Then we shotblasted the concrete to a CSP 3-4. All holes and cracks were filled afterwards.
  3. Moisture tests were done, both a calcium chloride and Wagner insitu test, which showed moisture content up around 95%. Tests were installed per ASTM F2170 by W.T. Rupnicki Certified concrete slab moisture testing ID 01303981 ICRI.
  4. We decided to install a moisture vapor barrier supplied by CFI. This was applied at a rate of 12 mils dft. This was applied to minimize any vapor transmission through the concrete.
  5. After this cured, we applied the first lift of Grey 440 epoxy and broadcasted a small grain sand until rejection.
  6. After curing we cleaned up all excess sand and vacuumed the floor surface. Then we ran a buffer with 80grit sandpaper over the entire floor to remove any high spots.
  7. We then applied the second lift of grey 440 epoxy and broadcasted until rejection.
  8. After curing we cleaned up all excess sand and vacuumed the floor surface; then we ran a buffer with 80grit sandpaper over the entire floor to remove any high spots.
  9. We then applied CFI’s Wearcoat 100 as a grout and top coat to the open sand texture.
  10. The last task was filling expansion joints with a flexible two-component Urethane.

The project turned out beautiful and the owner is very happy with the results.

What is Polished Concrete?

Concrete polishing is the process of grinding, hardening, and honing concrete using specialized diamond abrasives and planetary grinders. Shot Blast Inc. specializes in the process, and the result is a beautiful, low-maintenance flooring finish.

See for yourself in our latest video:

Learn more about polished concrete.

What’s the Difference Between Shot Blasting and Sand Blasting?

Sand Blasting a poolWhile both shot blasting and sand blasting are a mechanical surface cleaning process, the application of each is different. In shot blasting, a throwing wheel is used, and in sand blasting, compressed air is used.

Shot Blasting: In shot blasting, the throwing wheel turns rapidly, which causes the steel shots to accelerate towards the surface. Compared with sand blasting, shot blasting does not generate silicon dusts and causes less of a problem with environmental pollution. Learn more.

Sand Blasting: Sand blasting takes compressed air as its source of power and shoots a high speed abrasive sand stream towards the surface. The cutting effect of the sand helps to completely clean the surface and improve the mechanical profile, which is often helpful before painting or coating.