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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In a composite cylinder astm c882 which the repair material is bonded to substrate mortar on a slant surface, the applied compressive load exerts a complex state of stress on astm c882 slant surface which is dominated by shear stresses. If the asrm astm c882 the repair material and the substrate material is good to sustain the shear stresses generated on the slant surface, then the failure mode in the composite cylinder is dictated astn the tensile strength corresponding to the compressive strength of the repair material.
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.
If you need more astm c882 or have any questions, please note the Lab ID number and contact us at:. Combining values astm c882 the two systems may result in non-conformance with astm c882 standard. If the failure occurred on the slant surface, the actual bond strength is same as the minimum bond strength.
Apparatus to mix Portland-cement mortar shall be as described, except for astm c882 sections on specimen molds, tamper, and testing machine.
Full text of “1. Civil IJCSEIERD INVESTIGATION ON ASTM C Rashmi R Pattnaik”
However, if the failure surface is not on astm c882 interface, the bond strength as per the ASTM C calculation represents minimum bond strength. This research, investigates the influence of compressive strength on the bond strength of the repair materials.
Print and complete the following order form. The details of these tests are astm c882 in the results section. The bond strength astm c882 determined by using the epoxy system to bond together two equal sections of Portland-cement mortar cylinder. It assumes that the failure of the composite cylinder occurs preferentially on slant surface to calculate the bond strength.
Astm c882 for Results Please contact a CTLGroup chemical services representative or Project Manager to discuss your individual project needs and testing response times. This abstract is a brief summary of the referenced standard. It can be observed from the results in Tables 1 that the repair materials A, B, C c882 D failed in the substrate mortar because of higher compressive strength than the substrate mortar.
After suitable curing of the bonding agent, the test is performed by astm c882 the compressive strength of the composite cylinder. Pattnaik the expected behavior include significant differences astm c882 the compressive strength, tensile strength, modulus astm c882 elasticity and poisson’s ratio of the repair and the substrate materials.
The failure occurs aastm slant surface when the compressive strength of the repair materials are less than the compressive strength of substrate mortar. Figures 2 b and c show the failure of the composite cylinder in substrate and repair material, respectively, indicating a weaker material strength than the bond strength at the interface.
The composite cylinders were tested for bond strength as per ASTM C procedure after 28 days of casting.
This test method covers the determination of the bond strength of epoxy-resin-base bonding systems for use with Portland-cement concrete. This provided a means to evaluate the influence of the disparity of the mechanical properties of the repair and substrate materials on the astm c882 strength astm c882 the composite cylinder.
In this paper an experiment was conducted to investigate the influence of compressive strength of substrate mortar on the bond strength of the repair materials using ASTM C test procedure.
However, it was observed c8882 experimental studies that the failure on the slant surface is not necessarily the case with all the repair materials. However, performance of repair materials has shown that this test method does not adequately characterize the true bond strength of the repair materials due to some inherent shortcomings. Laboratory conditions, materials, proportions, and procedures for mixing the Portland-cement mortar shall be tested to meet the requirements specified.
The cubes of the aatm materials were tested in compression astm c882 28 days. Use Determination astm c882 the bond strength of epoxy-resin-base astm c882 systems with Portland cement concrete. 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.
Therefore, it is observed that for a good bond strength between repair material astm c882 substrate mortar the failure occurred in the substrate mortar or on asstm repair material rather than at the interface.
In this study, two classes of bond strength – Minimum bond strength as calculated based on ASTM C and Actual Bond Strength – are recognized for sake of clarifying the mode of failure. Sample Type Epoxy astm c882 bonding systems, Epoxy resin-base repair c88, Epoxy resin-base concretes.
However, the results from this investigation are limited to eight repair materials, additional data is needed to define wstm precisely the limits of compressive strength ratio within which a particular failure mode would occur.
The substrate mortar specimens cast 35 days earlier than repair materials, did not exhibit significant changes in their compressive strengths when tested alongside the repair materials. The values stated in each system may not be c882 equivalents; therefore, each system shall be used independently of the other. ASTM does not give astm c882 warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Search the history of over astm c882 web pages on the Internet. In these tests the compressive strength of repair materials gained rapidly up to 28 days.
ASTM C Bond Strength of Epoxy-Resin Systems | CTLGroup
Full text of ” 1. Ideally, the selection of astm c882 appropriate repair material is a function of the type of structure, existing stress conditions at the location of the repair, environmental exposure conditions, and the time constraints placed on the repair operations.
Along with the slant shear astm c882 on composite cylinders, cubes prepared from the same batch of mortar and repair materials were tested to determine the compressive strength of the mortar and repair materials, respectively. It was also observed that the failure of the composite cylinders occur on the interface, if the compressive strength asym repair materials are astn than the compressive strength of the substrate ast.
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