ASTM E488 PDF
TESTING PROGRAM ACCORDING TO: ASTM E Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements. ASTM E pdf – Download as PDF File .pdf), Text File .txt) or read online. Last previous edition E – obtained by applying factors of safety to the ultimate load of 2. Annual Book of ASTM Standards, Vol the anchorage.
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Bond strength of hot-d Lattice modelling of s Size effect in bearing The Effect of Steel Co A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Astk standard has been approved for use by agencies of the Department of Defense.
Only those tests required by the specifying authority need to be asstm. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. E 4 Practices for Force Veri?
The materials used include epoxy, cementitious material, polyester resin, and other similar types. For tension tests, displacement is measured along the axis of the anchor, d488 for shear tests, displacement is measured perpendicular to the axis of the anchor, in mm in.
Current edition approved May 10, Originally approved in Last previous edition approved in as E — E — 96 3. The enlarged diameter section of the hole is predrilled or enlarged by an expansion process during setting of the anchor.
Calibrated electronic load and displacement measuring devices which meet the sampling rate of loading speci? The load and f488 measuring devices shall be capable e4488 providing data points at least once per second in order to produce continuous load versus displacement curves. A minimum of data points per instrument shall be obtained and recorded for each individual test. The readings shall be obtained prior to reaching peak load. The instruments shall be positioned to measure the vertical movement of the anchor with respect to points on the structural member in such a way that the instrument is not in?
The testing device shall be of sufficient capacity to prevent yielding of its various components and shall ensure that the applied tension wstm remain parallel to the axes of the anchors and that the applied shear loads remain parallel to the surface of the structural member during testing.
Calibrated load cells which meet the speci? E — 96 applied load, when astn in accordance with Practices E 4. The test system support shall be of sufficient size to prevent failure of the surrounding structural member. The loading rod shall be of such size to develop the ultimate strength of the anchorage hardware with minimal elastic elongation and shall be attached to the anchorage system by means of a connector that will minimize the direct transfer of bending stress through the connection.
The components of the test? Worn or deformed holes shall be repaired. Insert sleeves of the required diameter shall be periodically installed in the loading plate to meet these requirements. The edges of the shear loading? Dial gages having an accuracy of FIG. E — 96 FIG. Displacement measurements as described in 5.
Include components of deformation such as elastic elongation of the loading rod anchor stem, deformation astmm the loading plate, sleeves, shims, attachment hardware, and local xstm member material. Deduct all of the elongations from these sources from the total displacement measurements by astn supplementary measuring devices or satm test data for the installed test set-up with rigid specimen replacing the anchor to be tested.
The displacement to be used for the evaluation of the?
ASTM E / EM – 18 Standard Test Methods for Strength of Anchors in Concrete Elements
E — 96 concrete or masonry members shall be evaluated. The overall size of the test specimen shall not be reduced unless the requirements in 6. The structural member shall be at least 1. The structural member will act as a beam if the spacing between reaction supports is greater than the thickness of the member.
A structural member with a thickness of at least 1. In general, the thickness of the test axtm shall be equal to the minimum member depth speci? The overall size of the test specimen shall only be reduced when the minimum requirements ee488 6. Describe such conditions in detail. Cast-in-place concrete, grout-set, and epoxy-set anchors are some examples of anchorage systems that require provisions for aging or curing.
The choice of the controlled conditions shall simulate the conditions under which the anchors will be used. Testing shall begin only after the test specimens have reached at least an appropriate stable wstm with regard to temperature and moisture content. For tests on clusters of anchors, the instrument shall lie on a plane through the astk of the shear loading rod or plate.
An extension of the axis of the shear loading rod or plate shall pass through the centric axis of the asfm of anchors. The anchors shall be tested at distances equal to or greater than those given in Table 2. The distances aatm Table 2 are not intended for design of attachments. Table 2 test support requirements are not prohibited from being reduced for bonded anchors with embedments equal to or greater than 20 anchor diameters. For anchors intended to be?
The structural member is not prohibited from being steel-reinforced.
Where steel failures occur, only a minimum of three anchors per size shall be tested and the three test results averaged. This procedure shall also be repeated for each variation in the structural member. Position the loading device in such a way s488 it is centered over the anchor to be tested. Provide uniform contact between the surface of the structural member and the support system. The amount of torque or pretension applied to the anchor by the attaching nut or locking device shall be uniform for each series of tests.
Whenever a loading plate is required in the testing of a cluster of anchors, ensure sstm loading of the individual anchors of the cluster. A reaction bridge is not required along the edge of the structural member if the edge distance is larger than 4 hef in all directions. Place the loading plate-rod assembly onto the structural member and secure it in place with the appropriate nut or other locking device typically used for the particular anchor installation to be tested. The amount of force exerted on the loading plate by the attaching nut or locking device shall be uniform for each series of tests performed.
Plot the initial and 2-min readings of the measurement devices in the form of load-displacement curves. Maintain complete load-displacement records throughout the test or plot after completion of the test. The data records shall include a time record of the beginning and end of each increment of constant load. The corrected displacement at maximum or at any other test load is observed from the plot relative to the adjusted zero-load displacement value.
DS or any other load for each test series as d488 arithmetic mean? The steel weight is then set over the hole or the installed anchor. This weight is secured to the structural member by the anchor see Fig. Inspect the anchor for failure or any suspected damage after each set of cycles. If the objective xstm to obtain runout at or below the endurance limit that is, 2 3 cycles at a given load, then three samples that reach runout are sufficient. If the test objective is to determine the maximum load that will reach runout the endurance limitthen tests in accordance with Practice E shall be performed.
Three separate anchor tests at a given load without failure shall be sufficient to establish the maximum shock capacity of the anchorage system.
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After application of the shock loads, the anchors shall be tensile tested in accordance with the Static Tests section to measure residual static tensile capacity, if required. Displacement failure is evidenced by continuous displacement associated with a constant or decreasing applied load.
Some anchorage systems require deformation to become effective. This provision does not apply to that deformation. The moisture content of the structural asrm at time of test is determined by several methods, including drying of small samples to constant weight or use of moisture meters; Precision and Bias The information provided herein on the specimens, aztm, and procedures makes the results intractable to calculation of meaningful values by statistical analysis for precision and bias at this time.
ASTM E 488.pdf
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