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<br />Copyright 2004 AIA <br /> <br />MASTERSPEC - SHORT FORM <br /> <br />02/04 <br /> <br />F. Surface Preparation for Corrosion-Inhibiting Treatment: Clean concrete by [low-pressure <br />water cleaning] [deterl~ent scruhhing] [ or] [sand hlasting] to remove dirt, oils, films, and <br />other materials detrimental to treatment application. Allow surface to dry before applying <br />corrosion-inhibiting treatment. <br /> <br />G. Surface Preparation for Sealers: Clean concrete by [shot hlasting] [tow-pressure water <br />cleaning] [ or] [detergent scruhhing] to remove dirt, oils, films, and other materials <br />detrimental to sealer application. <br /> <br />H. Surface Preparation for Sealers: Acid etch surface of concrete to produce a surface profile <br />matching CSP 1 per ICRI03732.[ Prepare surface for acid etching hy detergent scruhhing <br />to remove oils and film:~ that may prevent acid penetration.] <br /> <br />I. Remove excess acid solution, reaction products, and debris by squeegeemg or <br />vacuuming. <br />2. Scrub surface with an alkaline detergent, rinse, and squeegee or vacuum. <br />3. Check acidity of surface with pH test paper and continue rinsing until pH is acceptable. <br />4. When pH is acceptable and surface is clean, vacuum dry. <br /> <br />3.3 APPLICATION <br /> <br />A. General: Comply with :manufacturer's written instructions and recommendations for application <br />of products, including surface preparation. <br /> <br />B. Epoxy-Modified, Cementitious Bonding and Anticorrosion Agent: Apply to reinforcing bars <br />[and concrete ]by stiff brush or hopper spray according to manufacturer's written instructions. <br />Apply to reinforcing bars in two coats, allowing first coat to dry two to three hours before <br />applying second coat. Allow to dry before placing patching mortar or concrete. <br /> <br />C. Epoxy Bonding Agent: Apply to reinforcing bars[ and concrete] by brush, roller, or spray <br />according to manufactw'er's written instructions, leaving no pinholes or other uncoated areas. <br />[Apply to reinforcing bars in at least two coats, allowing f'Irst coat to dry before applying <br />second coat. ]Apply patching mortar or concrete while epoxy is still tacky. If epoxy dries, <br />recoat before placing patching mortar or concrete. <br /> <br />D. Latex Bonding Agent, Type II: Mix with portland cement and scrub into concrete surface <br />according to manufacturer's written instructions. Apply patching mortar or concrete while <br />bonding agent is still wet. If bonding agent dries, recoat before placing patching mortar or <br />concrete. <br /> <br />E. Latex Bonding Agent, Type I: Apply to concrete by brush roller or spray. Allow to dry before <br />placing patching mortar or concrete. <br /> <br />F. Patching Mortar: DolesH otherwise recommended by manufacturer, apply as follows: <br /> <br />1. Wet substrate thoroughly and then remove standing water. Scrub a slurry of neat <br />patching mortar[ .nixed with latex honding agent] into substrate, filling pores and voids. <br />2. Place patching mortar by troweling toward edges of patch to force intimate contact with <br />edge surfaces. For large patches, fill edges first and then work toward center, always <br /> <br />CONCRETE REHABILITATION <br /> <br />03930 - 10 <br />