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A ccz type concrete member creep positive and negative temperature change tester

A concrete and tester technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve the effects of convenient operation, low noise, and small increase in engineering costs

Inactive Publication Date: 2016-01-20
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Through the search of the above existing technologies and the review of the current domestic and foreign concrete component creep test instruments, it is found that there is currently no test instrument that can realize the positive and negative temperature changes of concrete component creep. However, the actual concrete component creep experiences positive and negative temperatures under natural conditions. The test of positive and negative temperature changes of concrete components is a problem that must be solved in structural design, construction, and operation, and the invention of a tester that adapts to the positive and negative temperature changes of concrete components is also a process that must be experienced in the development of concrete structures. The present invention Created a CCZ type concrete component creep positive and negative temperature change tester from scratch

Method used

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  • A ccz type concrete member creep positive and negative temperature change tester
  • A ccz type concrete member creep positive and negative temperature change tester
  • A ccz type concrete member creep positive and negative temperature change tester

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Experimental program
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Effect test

Embodiment 1

[0039] The main components of the CCZ concrete component creep positive and negative temperature change tester in this embodiment include: test box, AC contactor, temperature controller, temperature tester, condenser, compressor, heat exchanger, filter, starting power supply, evaporation Devices, freon, data lines and cables and other equipment components.

Embodiment 2

[0041] 1. Put each component in accordance with Figure 1 to Figure 4 to install;

[0042] 2. Move the CCZ concrete member creep positive and negative temperature change tester, so that the spring-type compression creep tester with a good concrete structure loaded is in the middle of it, open and set up relevant equipment, and carry out the creep test.

[0043] The main functions of the CCZ type concrete component creep positive and negative temperature change tester:

[0044] 1) Creep tests of concrete components can be carried out: including creep tests of ordinary concrete structures, reinforced concrete structures, concrete-filled steel tube structures (round concrete-filled steel tubes, square concrete-filled steel tubes), and other structures related to concrete;

[0045] 2) The temperature can be controlled within the range of -20℃~+25℃;

[0046] 3) Creep test at a certain constant temperature within the control temperature can be carried out;

[0047] 4) Tests in an...

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Abstract

The invention discloses a CCZ type concrete member creep positive and negative temperature change tester. The tester comprises a creep test box, an AC contactor, a temperature controller, a temperature tester, a condenser, a compressor, a filter, a heat exchanger, an evaporator, a starting power, a data line and freon equipment, etc. The positive and negative temperature change tester provided by the invention is suitable for all concrete structure creep tests, and can control creep tests within -20 DEG C- 25 DEG C; and the tester not only can control the temperature at a constant fixed value for a long-term creep test, but also can realize a caloric test, such as high and low temperature alternation, positive and negative temperature alternation, and simulation of changes in atmospheric temperature. The tester reaches temperature accuracy of 0.1 DEG C, realizes automatic temperature control, and can conduct automatic start and stop according to temperature inside the positive and negative temperature change box to accurately control the temperature in a specified range without manual operation after set of the temperature. The tester is easy to operate, has small engineering cost, and realizes temperature change experimental study on creep of concrete member.

Description

technical field [0001] The invention relates to a CCZ type concrete component creep positive and negative temperature change tester. Background technique [0002] Creep is the phenomenon that the deformation of concrete structures increases with time under continuous loading. Usually, the creep of concrete structures is 1 to 3 times larger than the elastic deformation, and creep is an important factor that must be considered in structural design. The internal reasons affecting the creep of ordinary concrete (plain concrete) include: cement, aggregate, water-binder ratio, mortar rate, admixture, fly ash, etc.; the external factors affecting the creep of concrete (plain concrete) include: loading age , loading stress, duration, relative humidity, temperature, time dimension, shape, immersion medium, carbonization, etc. The factors affecting CFST include some of the above-mentioned factors, but also have distinctive features, such as humidity does not affect it, but steel con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
Inventor 张戎令王起才马丽娜林梦凯徐家林张华李海莲朱昌岳郝建强葛勇代金鹏赵礼刚吕英明杨阳陈川
Owner LANZHOU JIAOTONG UNIV