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surface removal equipment 


 In the last decade the improvements in terrazzo grinders have allowed use to use large walk behind grinders for concrete preparation for removals of Epoxy coatings and all types of materials by using specific attachments for each type of removal . It is even possible to produce an almost marble or terrazzo-like appearance by using diamond attachment's by repeatedly going over the concrete floor with finer and finer abrasives to polish concrete. The walk behind grinders typically use several counter rotating blades and large pulse vacuum systems.
The hand grinding works grate for edging along walls and equipment that cant be taken of the floor it most commonly comes in  7" models specially adapted with dust shrouds allowing them to be connected to dust recovery vacuum systems.


Diamond Grinding Pros  

  • Can remove thick Epoxy and well bonded material's.
  • Can produce a very smooth and uniform surface
  • Works well used along side shot blaster


Diamond GrindingCons

  • Diamond grinding is much slower than shotblasting.
  • Consumption of diamond blades and abrasives can be costly especially when removing thick coating or smoothing out rough concrete.

                           How Scabbler works

            How high pressure washer works

                      How acid etcing works

                           How  scarifing works

                How grinding works

              How Shotblasting works

Cleaning Concrete Flooring With High Pressure Water Blasting is a recent innovation in cleaning concrete floors. Water jetting units generally use an engine-driven, piston pump to develop pressures of 15,000 to 25,000 psi. The blasting is accomplished by hand-held wands or lances, and by units that have 2 nozzles attached to a rotating bar. The rotary unit, which looks something like a lawn mower, is used to create a more uniform surface finish.


Water Jetting Pros

  • Water jetting has the advantage of controlling dust in the cleaning process.


Water Jetting Cons

  • While water jetting can create an effective profile and remove coatings, it is difficult to control the profile because the high pressure water can be very aggressive. (Grind must follow)
  • There is also the issue of water exposure and standing water cleanup as well as the need for dry time of the concrete surface and or the use of moisture tolerant primers.

  • ~Scabbler - For Concrete Floors Scabblers are air-powered units that utilize a number of small pneumatic hammers to pulverize the surface, thus providing an extremely rough profile for toppings and overlayments. They are very effective at breaking up delaminated toppings and, in some cases, over-troweled or crusty concrete surfaces. Sizes of units can vary from single-hammer, hand-held units to units that are 3 ft wide and utilize a dozen or more hammers. Dust generated by the scabbler can be controlled by applying water to the surface; however, clean-up of the surface must be thorough. Any pulverized material or sludge left on the surface can cause a bonding failure​.

  • Pros Of Using A Scabbler Machine

  • Can effectively remove several inches of coatings and/or concrete.

  • Cons Of Using A Scabbler Machine

  • ​This type of concrete preparation work is time consuming and generates large quantities of dust which can be controlled by water, but still results in a sludge that requires additional cleanup.

  • Concrete Acid Etching 

    ​Acid etching is accomplished by use of spraying the acid solution onto the concrete causing a foaming action. Next the solution must be agitated with scrubbers and/or floor buffers followed by thorough rinsing of the surface to remove any acid and concrete residue. After rinsing the surface neutralization of ph is required. This is typically accomplished with the use of TSP or Tri-sodium Phosphate.Acid etching is used most often for D-I-Y applications. Done properly acid etching opens the pores of the concrete creating a light texture similar to that of 100 grit sandpaper.The negatives are typically related to the improper coating selection. Due to the mild texture of the acid etched concrete, thick products tend to have inferior bond than thin products like sealers. The second major drawback is moisture. The vast majority of coatings are moisture sensitive requiring as much as 24-48 hours of dry time prior to application. There is a common misconception that acid etching as named is dangerous and uses harmful chemicals and special safety equipment. Muriatic acid one of the old mainstays has partially contributed. Today the premium acid etches products used buffered organic acids, detergents, and emulsifiers to etch as well as clean. There use also negates any need to neutralize the acid. It is still possible to purchase muriatic acid from local hardware stores and due to cost some individuals still choose to use it. It is however discouraged by the vast majorities of manufactures and contractors.
    Scarifiers; works by using steel and or carbide star shaped cutters mounted in rows with several rows around the perimeter of a rotating drum. The cutters come in several sizes and variations for different applications. With this drum machines can remove between ¼ inch and 2 inches in a single pass. Scarifiers are most often seen in the road construction business. They can be used for the removal of asphalt roads traffic lines, grinding down high spots and grooving the surface. Scarification is very effective in removing thick old coatings and  resurfaces

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    Scarifiers Pros


    • Scarification excels at removing thicker epoxy coating and resurfacers.


    Scarifiers Cons


    • Scarification leaves an aggressive profile more so than shotblasting. This texture usually requires at least 1/8 inch of resurfacer to restore the surface to a smooth uniform texture.
    • Cost of wear items such as cutters and supporting cages result in a high cost per square foot than most other removal methods and is of moderate speed in terms of operation.
    Shotblasting works much like sandblasting. A blast wheel spines at a high speeds throwing steel shot at the concrete braking up the concrete/material and profiling it at an even pace. A vacuum system then draws the shot and concrete dust off the floor. The heavy shot gets separated and recycled and the dust is draw into the vacuum. Shotblasting is by far our most common form of preparation for Epoxy floor coating


    Shotblasting Pros


    • Shotblasting has the ability to effectively prepare rough and uneven concrete as well as brand new concrete.
    • It’s cost per square foot is one of the most cost effective.
    • As a dry process it allows for immediate application of coatings shortening installation times.
    • Individual machines are capable of preparing 1,000’s of square feet per hour and this can be compounded by using multiple machines for large or time sensitive installations.



    Shotblasting Cons


    • Shotblasting may remove too much concrete especially with soft concrete or inexperienced operators.
    • Some smaller machines leave overlap marks requiring a little extra material or fill.
    • Shotblasters may have difficulty removing flexible or soft materials as well as high build coatings and resurfacers.

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