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 experimental program consisted of casting 24 substrate mortar specimens in 76 mm 3-in.
Figure 2a shows the failure on the slant surface indicating a failure of the bond between the repair and substrate material. Effect of Differences in Compressive Strength In astm c882 to investigate the influence of differences in compressive strength of the repair and substrate materials on the bond strength of the repair material, composite cylinder specimens were prepared as per the ASTM C test method.
Along with the slant shear test on composite cylinders, cubes prepared from the wstm batch of mortar and repair materials were tested to determine the compressive strength of the mortar and repair astm c882, respectively. This test method covers the determination of astm c882 bond strength of epoxy-resin-base bonding systems for use with Portland-cement concrete.
Full text of “1. Civil IJCSEIERD INVESTIGATION ON ASTM C Rashmi R Pattnaik”
The failure occurs on slant surface when the compressive strength of the repair materials are less than the compressive strength of substrate mortar. Work Item s – proposed revisions of this standard. Astm c882 Produced Bond strength, bond astm c882, voids in the bond and type and position of the failure are reported. This paper investigates the influence of compressive strength of repair materials and substrate mortar on the failure pattern of the composite cylinders and observed that compressive strength of repair materials astm c882 the failure pattern and bond strength of repair materials.
Compressive Strength The compressive strength of the repair materials and substrate mortar were determined using 50 mm 2-in cube as per the ASTM C standard practice, since the repair materials are primarily mortars.
It assumes that the failure of the composite cylinder occurs preferentially on slant surface to calculate the bond strength. The proportions of the materials used in preparing the substrate mortar were based on a cement-to-sand mass ratio of 1: Astm c882 can be observed from the results in Tables 1 that astm c882 repair materials A, Astm c882, C and D failed in the substrate mortar because of higher compressive strength than the substrate mortar.
The practical importance of the rapid setting and hardening behavior of repair materials is often reflected in the specifications imposed on astm c882 repair materials as seen astk ASTM C specification.
ASTM C Bond Strength of Epoxy-Resin Systems | CTLGroup
Time for Results Please astm c882 a Asstm chemical services representative or Project Manager to discuss your individual project needs and testing response times. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Referenced Documents purchase astm c882 The documents listed below astm c882 referenced within the subject standard but are not provided as part of the standard.
Ideally, the selection of an appropriate repair material is a function qstm the type of structure, existing stress conditions at the location of the repair, environmental exposure conditions, and the time constraints placed astm c882 the repair operations. If you need more info or have any questions, please note the Lab ID number and contact us at: Astm c882 values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
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A specific hazard statement is given in Section 8. Therefore, when a compressive astm c882 is applied on a concrete or mortar cylinder the failure occurs astm c882 to the principal tensile stresses generated in an orthogonal direction to the applied stress.
However, a astm c882 tensile stress is also exerted in a direction perpendicular to the applied compressive load. If the bond between the repair material and the substrate material is good to sustain the shear stresses generated on the slant surface, then the failure mode in astm c882 composite cylinder is dictated by the tensile strength corresponding to the compressive strength of astm c882 repair material.
ASTM C test procedure does not adequately characterize ast true bond strength of the repair materials. The cubes of the repair materials were tested in compression at 28 days.
In this paper an experiment was astm c882 to investigate the influence of compressive strength of substrate mortar on the bond strength of the repair materials using ASTM C test procedure.
This disparity in strengths can be astm c882 to influence the failure mode and the bond strength determined in the composite cylinder. In contrast, test specimens of repair materials cast alongside the composite cylinders exhibited a rapid gain in compressive astm c882, ranging from 31 MPa to 82 MPa 4, to 12, psi. Figures 2 b and c828 show the failure of c82 composite cylinder in substrate and repair material, respectively, indicating a weaker material strength than the bond strength astm c882 the interface.
The details of these tests are provided in the astm c882 section. Laboratory conditions, materials, proportions, and procedures for mixing the Portland-cement mortar shall be tested to meet the requirements specified. A modified slant shear test designed to enforce adhesive failure, Construction and Building Materials 41, pp 7. Depending on the age of testing of the composite cylinder for bond strength, the compressive strength of the repair materials were lower, similar or greater than the strength of the substrate mortar.
In the ASTM C specification, the bond strength between the repair material and substrate concrete is determined using the asm shear test method as specified in ASTM C test procedure.
It was also observed astm c882 the failure of the composite cylinders astm c882 on the interface, asm the compressive strength sstm repair materials are lower than the compressive strength of the substrate mortar.
Sample Type Epoxy resin-base bonding systems, Epoxy resin-base repair mortars, Epoxy astm c882 concretes.
However, it was observed through experimental studies that the failure on the slant surface is not necessarily the case with all the repair materials. Effect of Differences in Compressive Strength Table 1 shows the compressive strength of substrate and repair materials, and the bond strength of the repair materials.