2020-193A - Laserfiche WebLink

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A. All traffic deck coatings are to be applied to acceptable clean, dry, sound substrates. Clean surfaces to be treated in accordance with the system manufacturer's recommendations. Acceptable methods include sweeping, blowing, vacuuming, pressure washing, water blasting, acid etching, sand blasting, or shot blasting as required to remove all laitance and surface contaminants to insure proper adhesion of the deck coating. B. Select and install a test area prior to general application to establish procedures, verify adhesion and acceptable appearance. C. Surface preparation shall produce a surface profile matching CSP 4, 5 or 6 per ICRI 03732, as required to meet the requirements of the selected deck coating. Sweep and vacuum roughened surface to remove debris followed by low-pressure water cleaning. Coordinate surface preparation with the surface preparation for the corrosion -inhibiting treatment, as applicable. D. Notify Engineer 7 days prior to completion of the surface preparation. Meet with the Engineer and manufacturer's representative to review surface preparation, joint preparation, adhesion test results, and crack preparation, as applicable. All joint and crack preparation shall be included in the cost of the traffic deck coating system. 1. Seal all underlying control and construction joints. E. Other detailing work including sealing around drains, penetrations, curb, column and wall bases, etc., shall be accomplished in accordance with system manufacturer's recommendations prior to general application. F. Provide a grid system marked on the deck surface to designate the area for which a container of material must be used evenly applied to obtain the desired average dry mil film thickness. A wet mil gauge shall also be used to randomly verify that mil thickness at application is consistent with system manufacturer's recommendations. G. Broadcast clean, dry silica aggregate into top coats to provide a skid resistant surface as recommended by system manufacturer. H. Application shall be by squeegee, roller and power sprayer. Install the Elastomeric Traffic Deck Coatings in accordance with a "wear -rated" heavy and medium duty system per Section 2.2.D. 3.04 FIELD QUALITY CONTROL A, Deck Coating Field -Adhesion Testing: Field test deck coating adhesion to substrates as follows: Extent of Testing: Test mockups and completed deck coatings as follows: a. Perform 1 test. 2. Test Method: ASTM D 7234. 3. Inspect deck coating for bubbles, voids, aggregate distribution, and for application complying with specified requirements. Record results in a field -adhesion -test log. 4. Inspect deck coating preparation, installation, and testing. Record results in a log and report on the following: IRC -1801 Indian River County Courthouse Parking Garage Rehabilitation 07 90 20-6 Garage Waterproofing Systems (Revision 1)