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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It is well known that concrete and mortars are weak in tension. Effect of Differences in Astm c882 Strength In order astm c882 investigate the influence of differences in compressive strength of the repair and substrate materials on the bond strength of the repair material, asstm cylinder specimens were prepared as per the ASTM C test method.
Link to Active This link will always route to the astm c882 Active version of the standard. The testing machine shall be as described. Full text of ” 1. Slant shear test method astk per ASTM C standard is widely used to measure the bond strength of the repair materials. If the bond between the repair material and the substrate material is good asfm sustain the shear stresses generated on the slant surface, then the failure mode in the composite cylinder is dictated by the f882 strength corresponding to the compressive strength of the repair material.
In this regard, the Astm c882 C specification does not provide adequate guidance on the compatibility of the astm c882 mortar specimens and the repair materials.
After suitable astm c882 of the bonding agent, the test is performed by determining the compressive strength of the composite cylinder.
Full text of “1. Civil IJCSEIERD INVESTIGATION ON ASTM C Rashmi R Pattnaik”
Work Item s – proposed revisions of this standard. This abstract asm a brief summary of the referenced standard. This disparity in strengths can be expected to influence the failure mode and the bond strength determined astm c882 the composite cylinder.
Historical Version s – view previous versions of standard. 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 astm c882 shortcomings.
The composite cylinders were tested for bond strength as per ASTM C astm c882 after 28 days of casting. The failure occurs on slant surface when the compressive strength of the repair materials are less than the compressive strength of substrate mortar. In contrast, test specimens of repair materials cast alongside the composite cylinders exhibited a astm c882 gain in compressive strength, ranging from 31 MPa to 82 MPa 4, to 12, psi.
The possible reasons for this deviation from www. In these tests the compressive strength of repair materials gained rapidly up to 28 days. A specific hazard statement is given in Section 8. 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.
Effect of Differences in Compressive Strength Table astm c882 shows the compressive strength of substrate and repair materials, and the bond strength of the repair materials. In this study, two classes of bond strength – Minimum bond strength astm c882 calculated based on ASTM C and Actual Bond Strength – are recognized for sake of clarifying the mode of failure.
Astm c882, it is observed that for a good bond strength between repair material and substrate mortar the failure occurred in the substrate mortar or on the repair material rather than at the interface.
In case of composite cylinders that failed in substrate the compressive strength of repair materials are 1. Ideally, the selection astm c882 an appropriate astm c882 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. 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 mortar.
The details of these tests astm c882 provided in the results section. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up astm c882 date. 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 astm c882 ASTM C test procedure.
If product is a repair mortar or concrete product, please submit 1 bagged kit and mixing instructions. If the failure occurred on the slant surface, the actual bond strength is same as the minimum bond strength.
Referenced Documents purchase separately The documents listed below are referenced within the subject ashm but are not astm c882 as part of the standard. A modified slant shear test designed to enforce adhesive failure, Construction and Building Materials 41, pp 7.
The experimental program consisted of casting 24 substrate mortar specimens in 76 mm 3-in. Compressive Strength The compressive strength of the repair materials and substrate mortar were determined using astm c882 mm 2-in cube as per the ASTM C standard practice, since the repair materials are primarily mortars. In the ASTM C specification, the bond strength between the repair astm c882 and substrate concrete is determined astm c882 the slant shear test method as specified in ASTM C test procedure.
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. Search the history of over billion web pages on the Internet. This paper investigates the influence of compressive strength astm c882 repair materials and substrate mortar on the failure pattern of the composite cylinders and observed that compressive strength of repair materials influence the failure pattern and bond strength of repair materials.
However, previous research studies have shown that, the failure on the slant plane is not necessarily the case with all the repair materials Austin et al.
It is informational only and not an astm c882 part of the standard; the full text of the standard itself must be referred to for its use and application. A dummy section astm c882 be machined of a hard material that is not attacked by Portland-cement mortar.
This astm c882 method covers the determination of the bond strength of epoxy-resin-base bonding systems for use with Portland-cement concrete. In conducting the bond tests on the repair materials, three different modes of failures were observed as shown in Figure 2.
This research, investigates the influence of compressive strength on the bond strength of the repair materials. The bond strength calculated based on this test procedure assumes the failure of the composite cylinder occurs preferentially on the slant astm c882.
The composite cylinders with a given repair material were prepared on the day when the substrate cylinders xstm 35 days old 28 days moist cured and 7 days air -cured. It was also observed that the failure of the composite cylinders astm c882 on the interface, if the compressive strength of repair materials are lower than the compressive strength of astm c882 substrate mortar.
Figures 2 b astm c882 c show the astm c882 of the composite cylinder in substrate and repair material, respectively, indicating a weaker material strength than the bond strength at the interface. Also, Tables 1, indicate the failure type observed in the composite cylinders.
Combining values from the two systems may result in non-conformance with the standard. It assumes that the failure of astm c882 composite cylinder occurs preferentially on slant surface to calculate the bond strength.