1 / 50

Flooring Options for High Traffic Areas

Flooring Options for High Traffic Areas. Presented by: Jayson L. Helsel, P.E. KTA-Tator, Inc. Flooring Options Overview. Moisture assessment Surface preparation Coating options Slip resistance. Learning Objectives. Completion of this webinar will enable the participant to:

ajaime
Télécharger la présentation

Flooring Options for High Traffic Areas

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Flooring Options for High Traffic Areas Presented by: Jayson L. Helsel, P.E. KTA-Tator, Inc.

  2. Flooring Options Overview • Moisture assessment • Surface preparation • Coating options • Slip resistance

  3. Learning Objectives • Completion of this webinar will enable the participant to: • Describe two typical moisture tests for concrete floors and what the common acceptance criteria are for each • List typical surface preparation methods used for concrete floors prior to coating application • Identify at least three common options for coating concrete floors subjected to foot traffic • Understand general slip resistance requirements and list the common minimum value necessary for coefficient of friction

  4. Moisture Assessment • Plastic sheet method: ASTM D4263 • Calcium chloride test: ASTM F1869 • In-Situ Relative Humidity: ASTM F2170 • Moisture meters: F2659 & F710

  5. Moisture Assessment • Plastic sheet method (ASTM D4263) • Square sheet of clear plastic film taped to the slab surface • Remains for 16-24 hours • Look for moisture development

  6. Moisture Assessment • Calcium chloride test (ASTM F1869) • Determines vapor emission rate in pounds/1000 sq ft/24 hrs • Known mass of anhydrous calcium chloride placed under sealed dome • Remains 60-72 hours • Weight increase determines amount moisture • Typical limit = 3 lbs/1000 sq ft/24 hrs

  7. Calcium Chloride Test • Quantifies volume of water emitting from a 1000 square foot slab per 24 hours • Plan the test • Prepare the test site (CSP 1-2) • Weight cartridges; record weights • Open cartridges • Place cartridges, domes and seal domes • Start testing • End test; reweigh and calculate results

  8. Calcium Chloride Test

  9. Calcium Chloride Test • Record start and stop dates and times • Record pre- and post-test weights. Calculate weight gain • Multiply weight gain by constant (118.932), then divide by elapsed time of test

  10. Moisture Assessment • In-situ Relative humidity in slabs (ASTM F2170) • Holes drilled to 40% (one side) or 20% (two-sided) of slab thickness • Plastic inserts or probes inserted and sealed • Measure after 72 hours • 75% is typical maximum (ASTM F710) • Coating manufacturer may specify maximum

  11. Moisture Assessment • Moisture meters • Intended for floors/slabs (and walls) • Operatesby measuring the electrical resistance or conductivity between the tips of two insulated pins at the surface or subsurface using concrete nails • Resistance converted to a relative moisture content • Testing destructive when holes must be drilled

  12. Moisture Assessment • Moisture meters • Some types non-destructive, use electrical impedance measurement • Contacts rest on concrete surface • May also report humidity • Mostly used prior to flooring application

  13. Surface Preparation • Perform thorough assessment • Need sound surface • pH measurement • Specify appropriate patching materials • Cementitious products – epoxy, urethane • 100% acrylic products

  14. Surface Preparation • Surface cleaning to remove grease, oil, contaminants, etc. • SSPC-SP 1 • ASTM D4258 • Air, water cleaning, scrubbing, sweeping or vacuuming may be acceptable

  15. Surface Preparation • Blast cleaning • Lower pressures • SSPC-SP 13 • ASTM D4259 • Variations • Centrifugal wheel blast unit, e.g. Blastrac

  16. Surface Preparation • International Concrete Repair Institute (ICRI) • Technical Guideline No. 310.2-1997 (formerly No. 03732), “Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymers Overlays” • Defines levels of preparation based on surface profile roughness • Includes surface replica comparison panels

  17. ICRI 310.2 • “Concrete Surface Profile,” CSP 1 - CSP 10 • CSP 3 to 5 typically specified for floor coatings

  18. ICRI 310.2 • CSP 3 – Light shotblast

  19. ICRI 310.2 • CSP 5 – Medium shotblast

  20. ICRI 310.2 • CSP 6 – Medium scarification

  21. Surface Preparation • Hand/power tools • ASTM D4259 • Smaller areas • E.g. rotopeen

  22. Surface Preparation • Acid etching • ASTM D4260 • Surface must be free of: • Sealers, coatings, grease, oil, etc. • Typical acids • Hydrochloric, sulfuric, phosphoric, citric • Thorough removal of spent acid

  23. Surface Preparation Inspection • Uniform and clean surface • Sound concrete • Surface pH • Moisture content

  24. Coating Options • Polished concrete • Epoxy • Methyl methacrylate acrylic (MMA) • Polyurea/polyaspartic • Polyurethane • Moisture cured polyurethane • Cementitious urethane

  25. Polished Concrete • Densifier to increase surface density and abrasion resistance • Penetrating alkyl silicate/siliconate product • Micro film forming surface treatment (sealer) optional • Polishing/honing of floor • Color may be added • Regular cleaning required

  26. Polished Concrete • Limited chemical resistance • Typical applications • Big box stores • Grocery stores • Mall stores • Office lobbies

  27. Polished Concrete

  28. Epoxy Coatings • Variety of epoxy chemistries • Polyamide, polyamine, novolac • Typically 100%/high solids • Typical system • Epoxy primer • Epoxy base coat(s) • Aggregate broadcast typical • Decorative broadcast possible • Topcoat/sealer (optional)

  29. Epoxy Coatings • Product example • Surface preparation: Mechanical profile (blasting) equal to 30-50 grit sandpaper • Application by trowel/squeegee & back roll • Primer: Epoxy at 4-8 mils DFT • Basecoat: Epoxy at 60-75 mils • Broadcast coat: Epoxy at 60-75 mils • Topcoat: Epoxy at 8-12 mils

  30. Epoxy Coatings • Product example (self leveling) • Surface preparation: Mechanical profile (blasting) equal to 30-50 grit sandpaper • Application by trowel/squeegee & back roll • Primer: Epoxy at 4-8 mils DFT • Topping: Epoxy, pour/spread to 250 mils • Topcoat: Epoxy at 4-8 mils

  31. Epoxy Coatings • Product example (thinner film) • Surface preparation: Mechanical profile (blasting) equal to 50-80 grit sandpaper • Application by trowel/squeegee & back roll • Primer: Epoxy at 5-8 mils DFT • Topcoat: Epoxy at 8-16 mils DFT

  32. Epoxy Coatings • Typical applications: • Commercial kitchens • Restaurants • Grocery/food preparation • Restrooms • Office/apartment lobbies

  33. Epoxy Coatings

  34. MMA Coatings • Methyl methacrylate acrylic chemistry • Typical system (125 mils total DFT) • Moisture: 85% Max RH • Surface preparation: ICRI 310.2 CSP 5 • Roller application • MMA primer • MMA basecoat with quartz broadcast • MMA topcoat (2 coats)

  35. MMA Coatings • Typical applications • Commercial kitchens • Grocery stores • Laboratories • Animal holding • Manufacturing/processing

  36. MMA Coatings

  37. Polyurea/Polyaspartic Coatings • 100% solids aliphatic polyurea/ polyaspartic • Product example • Surface preparation: Mechanical abrasion • Application by trowel/squeegee • Primer: Epoxy at 2-3 mils DFT • Basecoat: Polyurea at 8-12 mils DFT • Vinyl chip broadcast option • Topcoat: Polyurea clearcoat at 8-12 mils DFT

  38. Polyurea/polyaspartic Coatings • Typical applications: • Commercial kitchens • Restaurants • Grocery stores • Restrooms

  39. Polyurethane Coatings • High solids aliphatic polyurethane • Product example • Surface preparation: Mechanical abrasion/acid etch • Application by roller • Primer: Epoxy at 2-3 mils DFT • Basecoat(s): Polyurethane at 2-4 mils DFT, multiple coats typical

  40. Moisture Cured Polyurethane Coatings • Single component aliphatic MCU • Product example • Surface preparation: Mechanical abrasion/acid etch • Application by roller • Primer: MCU or Epoxy at 2-3 mils DFT • Basecoat(s): MCU at 2-4 mils DFT, multiple coats typical

  41. Polyurethane/MCU Coatings • Typical applications: • Showrooms • Cafeterias • Laboratories

  42. Cementitious Urethane • 100% solids aromatic cementitious urethane • May have broadcast aggregate • High abrasion resistance • High chemical resistance

  43. Cementitious Urethane • Product example • Moisture: 20 lb Max CaCl2 or 99% Max RH • Surface preparation: ICRI 310.2 CSP 4-5 • Application: Trowel applied at 250 mils • Optional topcoat, with or without aggregate broadcast

  44. Cementitious Urethane • Typical applications • Commercial kitchens • Processing areas • Pharmaceutical • Wet areas • Exterior

  45. Cementitious Urethane

  46. Slip Resistance • Utilize flooring material that has acceptable slip resistance under foreseeable conditions • Applicable regulations for required Coefficient of Friction (COF) are not always clear

  47. Slip Resistance • Typical recommendations include: • 0.5 COF by ADA and OSHA • 0.6 COF recommended for accessible routes • 0.8 COF recommended for ramps

  48. Slip Resistance • Many test methods and corresponding equipment for measuring slip • Testing equipment • Drag sled machines • Articulated strut machines • British pendulum • Others

  49. Slip Resistance • Test methods (partial list) • ASTM F1677, Portable Inclineable Articulated Strut Slip Tester • ASTM F1679, Variable Incidence Tribometer • ASTM C1028M, Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces • NFSI B1010.1-2009, Test method for Measuring Wet SCOF of Common Hard Surface Floor Materials • ASTM F609, Horizontal Pull Slipmeter

  50. Summary • Moisture assessment • Surface preparation & inspection • Coating options • Slip resistance

More Related