Nonstandard concrete fracture performance test device

Abstract

The invention relates to a nonstandard concrete fracture performance test device, and belongs to the technical field of concrete material performance testing. The nonstandard concrete fracture performance test device comprises power transmission boards and a clamp block group, the power transmission boards are arranged at both ends of a concrete sample, the clamp block group is arranged on the power transmission boards, and is used for clamping the concrete sample, the clamp block group comprises two oppositely-arranged clamping blocks; each clamping block includes a holding part and a mounting plate which are mutually fixed together, the mounting plate is provided with a mounting hole; each power transmission board includes a power transmission board base and an articulated ear fixed on the outer side of the power transmission board base, the power transmission board base is provided with a plurality of fixing holes, and the clamping block blocks and the power transmission boards are fixedly connected by bolts passing through the mounting holes and the fixing holes. The nonstandard concrete fracture performance test device adopts an adjustable structure, is suitable for specimens of different sizes so as to meet the testing requirements of the specimens of different sizes, and has the advantages of simple and effective structure, easy assembly and disassembly, and the like.

Description

technical field [0001] The invention relates to a non-standard concrete fracture performance test device, which belongs to the technical field of concrete material performance test. Background technique [0002] Concrete is the main building material currently used in the water conservancy industry. Concrete has the characteristics of strong compressive capacity but weak tensile capacity. In actual engineering, concrete is often destroyed due to tensile stress. Therefore, the tensile properties of concrete should be It is an important reference index. At present, the axial tension test of uniaxial tensile specimens with joints is one of the main methods to obtain the fracture performance of concrete. The standard document of the hydraulic industry is SL352-2006 "Hydraulic Concrete Test Regulations". This practice recommends standard concrete tension specimens. [0003] However, the standard specimen used to measure the tensile performance of concrete provided by SL352-200...

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Problems solved by technology

[0003] However, the standard specimen used to measure the tensile performance of concrete provided by SL352-2006 "Hydraulic Concrete Test Regulations" is a small specimen. By embedding prefabricated joints on the specimen and stretching it, the Fracture performance, stress-strain relationship, elastic modulus and other parameters of small-sized concrete specimens, but this method cannot reflect the crack resistance of large-scale concrete in actual engineering

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