Uniaxial compression tester

Abstract

The invention provides a uniaxial compression tester, and belongs to the technical field of concrete detection, and the uniaxial compression tester comprises a test frame body assembly and a temperature and humidity maintenance assembly. A plurality of concrete test pieces are vertically placed on the supporting table, the supporting and heat preservation structure is installed, and an external air conditioner is communicated with the temperature adjusting pipe to adjust the overall temperature of the concrete test pieces. According to the requirement of a temperature and humidity step test, lifting of the step seat is adjusted through the lifting motor, stretching of the related clamping hydraulic cylinder is independently controlled, and the sealing rubber plate is attached to the side wall of the concrete test piece. An external water supply pipeline provides steam or clear water with the corresponding temperature, the steam or the clear water is injected into a groove formed in the surface of a sealing rubber plate through a temperature and humidity nozzle, the temperature and humidity of the surface of concrete are controlled, and compared with traditional spraying and overall atomization, the temperature and humidity of all steps of a concrete test piece can be independently controlled by sealing and infiltrating; concrete compressive strength tests under different stepped temperature and humidity changes can be simulated, and the measurement range of the concrete compressive strength is increased.

Description

technical field [0001] The present application relates to the technical field of concrete detection, in particular, to a uniaxial compression tester. Background technique [0002] Concrete is an essential material in modern construction projects. The compressive strength is the most important indicator of concrete. When concrete is poured on site, it needs to be sampled and sent for inspection. When it reaches 28 days of age, the compressive strength test will be carried out in the laboratory. The uniaxial compressive strength of concrete refers to the ultimate failure strength obtained when the specimen is compressed in only one direction, that is to say, the concrete specimen is placed between the upper and lower platens of the press and pressed until the specimen is compressed The pressure intensity value measured when the failure occurs. Its determination is generally carried out using a uniaxial compressive strength instrument. Concrete specimens need standard curing...

AI Technical Summary

Problems solved by technology

[0003]However, the environments in which concrete is used are different. Some foundation concretes are faced with the soaking of groundwater at the bottom and the use of sun-exposed water loss at the top, and some dam concretes are faced with water bodies. Continuous penetration and erosion, some hot and cold areas of concrete face the influence of temperature difference on the compressive strength of concrete

Existing concrete generally undergoes standard maintenance as a whole, and accurate and effective test analysis and simulation cannot be performed on the compressive strength of concrete under humidity step changes and temperature changes

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