C – 99 Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear, Bond strength-concrete, Compression. The slant shear test method, ASTM C, is widely employed test procedure to determine the bond strength of repair materials for selection of repair material for . 1 Nov This standard is issued under the fixed designation C /C M; 1 This test method is under the jurisdiction of ASTM Committee C09 on.
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The failure occurs on slant surface when the compressive strength of the repair materials are less than the compressive strength of substrate mortar. Use Determination of the bond strength of epoxy-resin-base bonding systems with Portland cement concrete. In this regard, the Astm c882 C specification ast, not provide astm c882 guidance on the compatibility of the substrate mortar specimens and astm c882 repair materials.
This research, astm c882 the influence of compressive strength on the bond strength of the repair materials. The astm c882 reasons for this deviation from www. The bond strength calculated based on this test procedure assumes the failure of the composite cylinder occurs preferentially on the slant surface. Ideally, the selection of an appropriate repair material is a function of the asstm of structure, existing stress conditions at the location of the repair, environmental exposure conditions, and the time constraints placed on the repair operations.
This provided a means to evaluate the influence of the disparity of the mechanical properties of the repair and substrate materials on the bond strength of the composite cylinder.
In this paper an experiment was conducted to investigate the influence of compressive strength of substrate mortar astm c882 the bond strength of the repair materials using ASTM C test procedure.
The c88 of the astm c882 used in preparing the substrate mortar were based on a cement-to-sand mass ratio of 1: When astm c882 compressive strength ratio between repair material and substrate mortar is approximately 1. The testing machine shall be as described. The experimental program consisted of casting 24 substrate mortar specimens in 76 mm 3-in. It can be observed from the results in Tables 1 that the repair materials A, B, C and D failed in the substrate mortar because of higher compressive strength than the substrate astm c882.
The technical axtm sheet available for selection astm c882 these repair materials are mostly based on ASTM test procedures. The composite cylinders astm c882 de-molded 24 hours after casting, and kept for moist curing. Print and complete the following order form. ASTM C test procedure does not adequately characterize the asmt bond strength of the repair materials.
Pattnaik the expected behavior include significant differences between the compressive strength, tensile strength, modulus of elasticity and poisson’s ratio of the repair and the substrate materials.
It assumes that the failure of the astm c882 cylinder occurs astm c882 on slant surface to calculate the bond strength.
Therefore, it is observed that for a good bond astm c882 between astm c882 material and substrate mortar the failure occurred in the substrate mortar or on the repair material rather than at the interface. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
As a result of the disparity in the rate of strength gain between the repair materials and substrate mortar, the bond strength of a given repair material determined at any particular age reflected the influence of a unique combination of properties of the repair and the substrate materials.
In case of composite cylinders that failed in substrate the compressive strength of repair materials are astm c882. Also, Tables 1, indicate the failure type observed in the composite cylinders. 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. The molds shall be constructed in astm c882 form of right cylinders.
In conducting the bond tests on the repair materials, three different modes of failures were observed as shown in Figure 2. Depending on the age of testing astm c882 the composite cylinder for astm c882 strength, the compressive strength of the repair materials were lower, similar or greater than the strength of the substrate mortar.
In this study, two classes of bond strength – Minimum bond strength as calculated based on ASTM C astm c882 Actual Bond Strength – are recognized for d882 of clarifying astm c882 mode of failure.
The substrate mortar specimens cast 35 days earlier than repair materials, did astm c882 exhibit significant changes in their compressive strengths when tested alongside the repair materials. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up aztm date. Order Form 2 Email complete form to contact listed below.
Effect of Differences in Astm c882 Strength In order to investigate the influence of differences in compressive strength of the repair and astm c882 materials on the bond strength of the repair material, composite cylinder specimens were prepared as per the ASTM C test astm c882. Effect of Differences in Compressive Strength Table 1 shows the compressive strength of substrate and repair materials, and the bond strength of the repair aztm.
Therefore, when a compressive load is applied c828 a concrete or mortar cylinder the failure occurs due to astk principal tensile stresses generated in an orthogonal direction to the applied stress. A modified slant shear test designed to enforce adhesive failure, Construction and Building Materials 41, pp 7.
The cubes of the repair materials were tested in compression at 28 days.
ASTM C Bond Strength of Epoxy-Resin Systems | CTLGroup
In these tests the compressive strength of repair materials gained rapidly up to 28 days. After suitable curing of the bonding agent, the test is performed by determining the compressive strength of the composite cylinder.
Asgm 2a shows the failure on the slant surface astm c882 a failure of the bond between the repair and substrate material. Slant Shear Bond Strength Testing Before astm c882 repair material was bonded astm c882 the substrate mortar, the slant surface of the substrate mortar specimen is prepared by sandblasting and dry brushing. If the failure occurred on astm c882 slant surface, the actual bond strength is same as the minimum bond strength.
It was also observed that the asstm of the composite cylinders occur on the interface, if the compressive strength of repair materials are lower than the compressive strength of the substrate mortar. Link to Active This link will always route to the current Active version of the standard.
In contrast, test specimens of repair astm c882 cast alongside the composite cylinders exhibited a rapid gain in compressive strength, ranging from 31 MPa to 82 MPa 4, to 12, psi.
Slant shear test method as zstm ASTM C standard is astm c882 used to measure the bond strength of the repair materials. However, a asfm tensile stress is also exerted in a direction perpendicular to the applied compressive load.
Full text of “1. Civil IJCSEIERD INVESTIGATION ON ASTM C Rashmi R Pattnaik”
Historical Version s – view previous versions of standard. Work Astm c882 s – proposed revisions of this standard.
The test method covers bonding hardened concrete astm c882 hardened or freshly-mixed concrete. Full text of ” 1. Combining values from the two systems may result in non-conformance with the standard. The bond strength is determined by using the epoxy system to bond together two equal sections of Portland-cement mortar cylinder. Results Produced Bond strength, bond area, voids in the bond and type and astm c882 of the failure are reported. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not astm c882 as part of the standard.