Long-Term Performance of Epoxy Adhesive Anchor Systems (2013) / Chapter Skim
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S-1 A P P E N D I X S AASHTO Quality Assurance Guideline
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S-2 AASHTO QUALITY ASSURANCE GUIDELINES FOR MATERIALS AND INSTALLATION OF EPOXY ANCHOR SYSTEMS IN TRANSPORTATION APPLICATIONS ADHESIVE ANCHOR SYSTEMS This guideline addresses the material and installation of adhesive anchor systems in transportation applications. Material Adhesive for adhesive anchor systems can be an epoxy, polyester, vinyl ester, acrylate, or hybrid mortar and consist of two parts (a resin and a hardener)
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S-3 Per ACI 355.4, adhesive anchors can only be installed in holes drilled in concrete that is at least 21 days old and with a minimum compressive strength of 2500 psi. The concrete should be structurally sound and free of surface cracks.
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S-4 Blowing can be accomplished by compressed air or a hand pump with a nozzle that extends to the base of the hole. Manufacturers will typically require several blows of air.
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S-5 Anchor Installation Each manufacturer will specify approved anchor types for use with their system. Anchors should be free of oil, rust, or other residue that might reduce the adhesive bond.
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S-6 CONCLUSION Correct storage, preparation, installation, and torquing procedures are necessary in order to ensure proper performance of adhesive anchor systems. As these procedures vary by manufacturer and product, it is imperative that the procedures specified in the MPII be strictly followed.
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