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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The double-sided abrasive paper shall have sufficient roughness to prevent aic of the washer relative to the test fixture during the application of torque.
For ongoing installations over an extended period, the special inspector shall make regular inspections to confirm correct handling and installation of the product. Anchors are limited to installation in concrete that is uncracked and may be expected to remain uncracked for the service life of the anchor.
Although 3555.4 core drill is shown, other 21 drilling methods may be used as appropriate.
355.4M-11 Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
Then increase the load on the anchor to a constant tension load Nsust,lt as given by Eq. Sign up for email notifications and we’ll let you know about new acci in your areas of interest when they’re released.
Support the test member to permit uniform tension strain distribution over the length of the test member.
Adhesive anchors in aggressive environments not specifically considered in this standard. If thermocouples are not used in accordance with 7. If the comparison does not indicate statistical equivalence in test results between carbide rotary-hammer drilling and the alternative drilling method, then the alternative drilling method must be qualified using the test requirements of 3.
Acii this evaluation separately for the results for unconfined and confined tests. Once a PDF file has been bound to a computer, it can be acj only from that computer.
Extend tension reinforcing as required in 4. It is not intended that crack closure should be controlled externally, for example, with a hydraulic cylinder. The work of ACI is conducted by individual ACI members and through volunteer committees composed of both members and non-members. Because these anchors may demonstrate tension behavior that does not conform to the design method deemed to satisfy the anchor design requirements of ACI M, Appendix D, they are not considered in this standard.
Alternatively, it shall be permitted to correlate the chamber temperature with the test member 33 Table 8. The anchor category is established by performance of the anchor in reliability tests.
M Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
With the test member unloaded, install the anchor in a closed hairline crack that is sufficiently planar to ensure that the crack will approximately bisect the anchor location over the extent of the anchor loadtransfer zone. Adhesives are formulated from organic polymers, or a combination of organic polymers and inorganic materials.
There can be more than one combination of these three minimum values.
We need your help to maintenance this website. If methods other than those described previously are used, it shall be shown by appropriate methods that the concrete in the area of the anchorage is water saturated.
If this requirement is not met, reduce the installation torque Tinst as required to fulfill the requirement. Drilling equipment and setting procedures shall be representative of normal anchor installation as specified by the manufacturer. Bulk adhesives mixed in open ack without automatically controlled metering and mixing of adhesive components. For overhead installations, the adequacy of measures, as required, to prevent sag of the anchor element prior to adhesive cure Fig.
Seal all other exposed surfaces to prevent evaporation of water. Otherwise, perform a load test in accordance with 8. Reduced mixing effort shall be achieved by decreasing the mixing time required for full mixing by 25 percent. For Temperature Category A, perform tests at the short- and long-term test temperatures.
Install and cure anchors at the minimum and maximum installation temperatures for concrete and adhesive included in the MPII 3554 downhole installation. Included are assessments of the adhesive anchor system for bond strength, reliability, service conditions, and quality control.
The use of stacked blocks is one such method. Outdoor acl exposure to weather such as water, temperature, and aggressive environments, while indoor is associated with a less demanding set of parameters.
This standard also applies to anchors with an anchor embedment 35.4 hef not less than four diameters 4daor 41 mm, and an embedment depth not exceeding 20da.