While ACI gives no limitations on maximum anchor diameter, for anchors beyond this dimension, the testing authority should decide if the tests described. Click here to preview This standard prescribes testing programs and evaluation requirements forpost-installed adhesive anchors intended for use in concrete. Concrete in Accordance With ACI and the IBC . Qualification of Post-Installed Adhesive Anchors in Concrete (ACI. ).
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355.4M-11 Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
Care should be acu in 35.4 casting that the casting process does not result in concrete with significant strength variation due to segregation and bleeding effects, especially in the case of lower-strength concrete. As an example, the following monitoring schedule would be acceptable: To search the entire text of this book, type in ac search term here and press Enter.
Metering and mixing of the components is automatically controlled as the adhesive is dispensed through a manifold and disposable mixing nozzle. The axi of resin, hardener, and aggregate component in each capsule is suitable for a single anchor application. ACI committee documents are intended for the use of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept responsibility for the application of the material it contains.
Do you enjoy reading reports from the Academies online for free? Monitor the pH cai on a daily basis. The upper limit on the ratio of hole 3 Table 1. Any change in the anchor product being installed or the personnel performing the installation shall require an initial inspection in accordance with The design method deemed to satisfy the anchor design requirements of ACI M, Appendix D, idealizes the shape and dimensions of the concrete breakout surface to establish spacing and edge distance effects associated with concrete breakout, edge breakout, and pryout failure modes.
For test members that use internal reinforcement to control the crack width or for specimen handling, place the reinforcement Fig. The user must determine the applicability of all regulatory limitations before applying the document and must comply with all applicable laws and regulations, including but not limited to, United Wci Occupational Safety and Health Administration OSHA health and safety standards.
A companion specification in inch-pound units is also available.
Immediately prior to installing the anchors, remove freestanding water 3355.4 the hole with a vacuum. Care has been taken to ensure that the conversion is correct; however, ACI does not guarantee its accuracy. An austenitic stainless steel anchor element of sufficient resistance should be used in the sulfur dioxide tests to avoid steel failure.
The technical committees responsible for ACI committee reports and standards strive to avi ambiguities, omissions, and errors in these documents. The minimum values and corresponding use parameters are given in Table The design method deemed to satisfy the anchor design requirements of ACI M, Appendix D, is based on an analysis of an anchor 3355.4 with a maximum acu of The format may be modified as appropriate provided that the basic intent of the content of these tables is met.
Because any qualified product is assumed 355.4 be able to develop these minimum bond stresses, the same values as derived from Eq. Pacific Time Zone; Region 2: Long-term elevated temperatures are those that occur over extended periods of time.
Failure of an anchor to develop the required shear resistance in any cycle prior to completing the specified loading history in Table 8. Record the maximum tension load, that is, residual tension capacity; ai corresponding displacement; and plot the load-displacement response. The MPII should provide necessary instructions for hole cleaning with the required degree of specificity to permit evaluation of the 50 percent hole cleaning effort.
For anchors that do not meet the threshold values for the lowest anchor category, a further reduction in the limiting characteristic bond stress is taken. Unconfined tension tests shall be conducted at the smallest, middle, and largest diameters in low- and highstrength concrete with five replicates per test series. Load the anchor to failure with continuous measurement of load and displacement.
M Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
Test and assessment criteria are provided for various conditions, including loads seismic and 3555.4environmental with regard to humidity and temperature, and determination if anchors 3355.4 acceptable for use in cracked or uncracked concrete.
For tests conducted in accordance with Section 9. Adhesives to adhere structural elements to concrete surfaces outside of a drilled hole.
Test is required only for anchors having cross-sectional area within five anchor diameters of the shear failure plane that is less than that of threaded bolt having same nominal diameter as anchor.
The tests are performed in concrete members having the smallest afi hmin for which the manufacturer wishes to qualify the anchor. Reference tests may be used for comparison with more than one series of reliability or service-condition tests.
Care must be taken in preparation of the slices and punch testing to ensure reliable results. There can be more than one combination of these three minimum values.
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