ACI 355.4 PDF

Chapter 6—Reference tests, p. Criteria are separately prescribed to determine the suitability of adhesive anchors used in uncracked concrete only, or in both cracked and uncracked concrete. Criteria are prescribed to determine the design parameters and performance category for adhesive anchors. Included are assessments of the adhesive anchor system for bond strength, reliability, service conditions, and quality control. Special inspection

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Chapter 6—Reference tests, p. Criteria are separately prescribed to determine the suitability of adhesive anchors used in uncracked concrete only, or in both cracked and uncracked concrete. Criteria are prescribed to determine the design parameters and performance category for adhesive anchors. Included are assessments of the adhesive anchor system for bond strength, reliability, service conditions, and quality control.

Special inspection Table 1. Appendix D requires that anchors be tested either for use exclusively in uncracked concrete or for use in cracked and uncracked concrete conditions, whereby it is understood that the presence of cracking may occur at any time over the service life of the anchors.

Test and assessment criteria are provided for various conditions, including loads seismic and sustained , environmental with regard to humidity and temperature, and determination if anchors are acceptable for use in cracked or uncracked concrete. Refer to Cook and Konz for a review of factors that influence adhesive anchor behavior. Refer to Fuchs et al. For a discussion of issues associated with the qualification and design of systems for post-installed reinforcing bars, refer to Spieth et al.

Different anchor designs and adhesive types may exhibit a range of performance characteristics. In particular, the sensitivity of adhesive anchors to variations in installation and service-condition parameters such as hole cleaning, installation orientation, and cracked concrete characteristics may vary widely from each system.

ACI M addresses this situation by matching capacity reduction factors to anchor performance categories that are, in turn, established through a series of reliability tests. This standard also applies to anchors with an anchor embedment depth h ef not less than four diameters 4d a , or 41 mm, and an embedment depth not exceeding 20d.

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