Apparatus for testing cement-based material deformation under multiple environmental conditions

Abstract

The invention relates to a gelatin backing material deformation measuring apparatus on the condition of multi-environment. It comprises an environment analog case (10), a table seat (14), a displacement sensor, a temperature sensor, a computer and a copper measuring head (34), which is characterized in that the displacement apparatus is positioned on the environment analog case (10); two displacement sensor measuring heads (25) are separately fixed on the brace (24) of the moving device whose left height can be adjusted and the brace (42) whose right height can be adjusted; the moving device comprises a motor (18), a guide screw (21), a bearing (24), a first bearing seat (17), a second bearing seat (23), a num (22), a right steel plate (15), a left steel plate (41), a brace (24) whose right height can be adjusted and a brace (42) whose right height can be adjusted.

Description

technical field [0001] The invention relates to a deformation testing device for cement-based materials under multiple environmental conditions. Background technique [0002] The durability and service life of concrete structures are currently a research hotspot in the field of civil engineering. The main deterioration and damage forms of concrete structures, including steel corrosion, sulfate attack, freeze-thaw damage, etc., are mainly related to Cl - , SO 4 2- , Mg 2+ 、H 2 It is related to the migration or penetration of harmful media such as O into concrete. The formation and penetration of various micro-cracks in concrete provides a fast channel for the intrusion of these harmful media, seriously affecting the durability and service life of concrete structures. The formation of micro-cracks in concrete is mostly caused by volume deformation under constraint conditions, except for a few caused by load, and concrete volume deformation is an important characterizatio...

AI Technical Summary

Problems solved by technology

[0004] 1. If the number of test pieces is large and the measurement age is long, the number of test devices required is large and takes up a lot of space, and the cost of online testing for multiple sets of test pieces at the same time is high

[0005] 2. Some devices cannot test the early deformation of cement-based materials

[0006] 3. Existing devices do not consider the influence of engineering environment factors when testing, so the test results cannot correctly evaluate the volume deformation of cement-based materials in different working environments

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