Current edition approved Feb. Published March Originally approved in Last previous edition approved in as F —
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Current edition approved Feb. Published March Originally approved in Last previous edition approved in as F — Terminology 3. General Guidelines 4. No further reproductions authorized. F — 05 adhesive, adhesive removers, curing, sealing, hardening, or parting compounds, alkaline salts, excessive carbonation or laitence, mold, mildew, and other foreign materials that might prevent adhesive bond. Patching or underlayment compound shall be moisture-, mildew-, and alkali-resistant, and, for commercial installations, shall provide a minimum of psi compressive strength after 28 days, when tested in accordance with Test Method C or Test Method C , whichever is appropriate.
See X1. Testing Procedures 5. Non-chemical methods for removal, such as abrasive cleaning or bead-blasting, including methods described in Practice D may be used on existing slabs with deleterious residues to achieve an appropriate state for testing. Cleaning shall take place a minimum of 24 h before testing. Warning—Hydraulic cement used in concrete con- struction may contain trace amounts of free crystalline silica. Prolonged exposure to airborne free crystalline silica may be a health hazard.
Avoid actions that cause dust to become air- borne. Use local or general ventilation to control exposures below applicable exposure limits. Place several drops of water on a clean surface of concrete, forming a puddle approximately 1 in. Allow the puddle to set for 60 6 5 s, then dip the pH paper into the water. Remove immediately, and com- pare to chart to determine pH reading. Other pH testing methods such as pH pencils or pH meters, or both, are available and may be used to measure pH.
Readings below 7. Preparation of New Concrete Floors 6. Drying time before slabs are ready for moisture testing will vary depending on atmospheric conditions and mix design. Preparation of Existing Concrete Floors 7.
Avoid creating dust. Inha- lation of such dust is a cancer and respiratory tract hazard.
ASTM F710 Preparing Concrete Floors to Receive Resilient Flooring
More F It also includes suggestions for ensuring that the constructed concrete floor is acceptable for such installations but does not cover tests for adequacy of the concrete floor to perform structural requirements. A permanent, effective moisture vapor retarder, of the specified thickness and permeance, is required under all on- or below-grade concrete floors. Concrete floors for resilient floorings should be permanently dry, clean, smooth, structurally sound, and free of substances that may prevent adhesive bonding. Surface cracks, grooves, depression, control joints or other non-moving joints, and other irregularities should be filled or smoothed with latex patching or a recommended underlayment compound. The surface of the floor should be cleaned by scraping, brushing, vacuuming, or any other method. All concrete slabs should be tested for moisture regardless of age or grade level while all concrete floors should be tested for pH before installing resilient flooring.
ASTM F-710, Does the Subfloor Need to be THAT Flat?