Method for detecting shearing strength of interlayer bonding surface of rock filled concrete of constructional engineering

A technology of rockfill concrete and interlayer bonding, which is applied in the direction of applying stable shear force to test the strength of materials, etc. The test process is simple, easy to move, and the effect of improving the test accuracy

CN104749048AInactive Publication Date: 2015-07-01广西壮族自治区水利科学研究院

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 广西壮族自治区水利科学研究院
Publication Date: 2015-07-01
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention provides a method for detecting the shearing strength of an interlayer bonding surface of rock filled concrete of constructional engineering. After a test piece is manufactured through excavation in a rock filled concrete dam or foundation of the constructional engineering, vertical loading and horizontal loading are applied to the test piece gradually and respectively, the linear regression coefficient is determined according to the computational formulas of normal stress and shearing strength on a shearing surface, and the shearing strength of the interlayer bonding surface of the rock filled concrete dam can be calculated. According to the method, the test piece is excavated on a structural member entity, the test piece is subjected to shearing strength test by a jack, force applied to the test piece is pure shearing force, the concrete failure surface is consistent to the direction of the anti-shearing force, the influence factors in a testing process are reduced, the testing precision is improved and the testing process is simple and easy.

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Description

technical field

[0001] The invention belongs to the technical field of engineering construction, and relates to a method for detecting the shear strength of a joint surface between rockfill concrete dam layers. Background technique

[0002] In projects such as hydropower dams, complex structures and foundations, rockfill concrete is used more and more widely as filling materials. Rock-fill concrete is a rock-fill concrete body formed by randomly filling self-compacting concrete in large-sized stones by utilizing the characteristics of high flow, good separation resistance and self-flow of self-compacting concrete. It has the characteristics of less cement consumption, small hydration temperature rise, low comprehensive cost, fast construction speed and good volume stability. Among them, the interlayer shear capacity has a significant influence on the performance of rockfill concrete, and is one of the main control indicators of construction quality. Therefore, in order to ...

Claims

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