ACI M A U.S. Customary version of this document (ACI ) is available at Qualification of Post-Installed Adhesive Anchors. Click here to preview This standard prescribes testing programs and evaluation requirements forpost-installed adhesive anchors intended for use in concrete. ACI Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary. standard by American Concrete Institute, 08/01/.
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355.4M-11 Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
Alternatively, it shall be shown that the two data sets are statistically equivalent. Products may be tested and assessed for either or both categories under this standard. If the test member is cast vertically, limit the maximum height of a concrete lift to 1.
Round-robin tests are performed in regional concretes to establish and compare a nominal bond strength for 3355.4-11 expected anchor performance against the tested anchor bond strength.
Other test methods shall be permitted if approved by the ITEA. The quantity of resin, hardener, and aggregate component in each capsule is suitable for a single anchor application. There can be more than one combination of these acl.
M Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
The aggregate description shall include rock and mineral components, shape, hardness, and maximum 355.4-11 and grading specification. 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. Test internally-threaded anchors with the bolt specified by the manufacturer and report the bolt type refer to Table ACI and its members disclaim liability for damages of any kind, including any special, indirect, incidental, or consequential damages, including without ai, lost revenues or lost profits, which may result from the use of this publication.
We need your help to maintenance this website. Other cleaning methods are permitted; however, the MPII for the product shall contain sufficient specificity to permit the determination of a numeric 50 percent reduction of hole cleaning effort. Bolts, nuts, and washers not supplied with the anchors shall conform to the specifications given by the manufacturer, which shall be included in the test report.
Testing and 355.4-11 criteria are providedfor various conditions of use, including seismic loading; sustained loading;aggressive environments; reduced and elevated temperatures; and fordetermining whether anchors are acceptable for use in uncracked concreteonly, or acceptable for service both in cracked and uncracked concrete. It does not contain specific instructions for many of the tests described in this standard.
The special inspector shall verify the initial installations of each type and size of adhesive anchor by construction personnel on site in accordance with In addition, ACI chapters provide opportunities for interaction of professionals and practitioners at a local level.
For Temperature Category A, perform tests at the short- and long-term test temperatures. In the context of anchor installation, continuous special inspection is generally understood to mean that the inspector is present for each anchor installation.
The short-term temperature remains openended, however, and the response of the adhesive anchor to intermediate levels of elevated concrete temperature is established.
Once a PDF file has been bound to a computer, it can be opened only from that computer. Following application of load to the anchor sufficient to remove any slack in the loading mechanism, begin recording the anchor displacement, and increase the tension load on the anchor to Nw as given by Eq. Each injection system used with the adhesive anchor system should be evaluated as part of the anchor qualification in accordance with this standard.
Tests are also conducted on anchors installed in the same way and allowed to cure for the time specified in the MPII plus an additional 24 hours.
The American Concrete Institute disclaims any and all responsibility for the stated principles. Adhesive installation in accordance with the MPII. Drilling method—The default drilling method uses a rotary hammer drill with carbide bit.
If tests at the long-term test temperature are performed with Nsust in accordance with Eq.
Prior to installation, condition the anchor rod and test member to the lowest installation temperature and maintain it for a minimum of 24 hours. The mean residual capacity of the anchors in the test series shall be at least percent of Veqas given by Eq.
ACI : Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary
Two mixture designs—one without and one with fly ash as a cement replacement—are intended to provide a representative sample of concrete compositions in North America.
Select smin, cmin, and hmin depending on anchor characteristics. Embed anchors in cylindrical concrete test members having a minimum diameter of mm. Qualification for seismic loading is optional in conjunction with qualification ai cracked concrete 8.
Other methods of preventing rotation of the washer shall be permitted, provided it can be shown they do not affect the anchor performance. Prior to installation, condition the anchor rod and test member to the target temperature and maintain that temperature for a minimum of 24 hours. The residual crack width associated with a hairline crack may be influenced ac the presence of anchors installed in the qci path and the crack width cycling history of the test member.