By ACI Committee 355
This ordinary prescribes checking out and overview necessities for post-installed adhesive anchor platforms meant to be used in concrete below the provisions of ACI 318. standards are individually prescribed to figure out the suitability of adhesive anchors utilized in uncracked concrete simply, or in either cracked and uncracked concrete. standards are prescribed to figure out the layout parameters and function type for adhesive anchors. incorporated are checks of the adhesive anchor procedure for bond power, reliability, provider stipulations, and qc. distinctive inspection (13.3) is needed in the course of anchor install as famous in 10.22. desk 1.1 presents an outline of the scope.
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Additional resources for ACI 355.4M-11 - Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric)
Cast the concrete test members in lengths of steel or plastic pipe having a wall thickness as required to prevent slice splitting during punch testing. All test members shall originate from the same concrete batch. Install anchors along the central axis of the concrete test members according to the MPII. For tests in sulfur dioxide, fabricate the anchor element from austenitic stainless steel. After curing the adhesive, concrete cylinders in which the anchors are installed shall be sawn with a diamond saw into 30 mm ± 3 mm thick slices so the resulting slices are undamaged.
2, unconfined. 2. 1 mm), where Δw2 is additive to the initial width of the crack as measured after installation of the anchor but prior to loading of the anchor. 2 Hz. During crack cycling, adjustment of the force required to maintain the crack opening width Δw1 constant shall be permitted. Hold the minimum load applied to the test member constant 29 Fig. 1—Crack-width requirements for crack cycling. during the crack cycling portion of the test. The crack opening width Δw2 shall be permitted to increase (Fig.
1 mm for the duration of the crack cycling portion of the test. 1 mm. 3 mm for part of the crack cycling portion of the test. 3 The crack width is dependent, in part, on the bond stress developed by the embedded reinforcement on each side of the crack. Running opening and closing cycles serves to stabilize the bond stresses at a constant level and permits control of the crack width via application of a defined external load. Equation (7-1) provides a load level Nw on the anchor that is consistent with the load on headed anchors corresponding to the threshold displacements established for this test.
ACI 355.4M-11 - Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (Metric) by ACI Committee 355