Apparatus for testing cement-based material deformation under multiple environmental conditions
A cement-based material, deformation testing technology, applied in the direction of mechanical solid deformation measurement, material inspection products, etc., can solve the problems of inability to correctly evaluate the volume deformation of cement-based materials, incapable of early deformation testing of cement-based materials, and regardless of engineering environmental factors and other problems, to achieve the effect of fast measurement, small quantity, and small space occupation
Inactive Publication Date: 2009-07-22
WUHAN UNIV OF TECH
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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
Method used
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[0025] Such as image 3 , Figure 4 , Fig. 5, Fig. 6, Fig. 7, shown in Fig. 9, under a kind of multi-environmental conditions, cement-based material deformation testing device, it comprises environment simulation box 10, pedestal 14, displacement sensor, temperature sensor, computer, copper probe 34 , the pedestal 14, the displacement sensor probe 25, and the temperature sensor probe 35 are located in the simulation chamber 8 of the environmental simulation box 10, the bottom of the pedestal 14 is located on the steel base plate 11 in the environmental simulation box 10, and the top of the pedestal 14 is respectively provided with There are 12 small dark grooves 13 and 12 large dark grooves 16, and 12 test pieces are located on the pedestal 14, and copper probes 34 are pre-embedded at both ends of the test pieces. Temperature sensor comprises temperature sensor measuring head 35 and temperature sensor control module, and temperature sensor measuring head 35 has copper sheath, ...
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The invention relates to a deformation testing device for cement-based materials under multi-environmental conditions. A cement-based material deformation testing device under multiple environmental conditions, which includes an environmental simulation box (10), a pedestal (14), a displacement sensor, a temperature sensor, a computer, and a copper probe (34), and is characterized in that the mobile device includes a motor (18), screw mandrel (21), bearing, first bearing seat (17), second bearing seat (23), nut (22), right steel plate (15), left steel plate (41), right height adjustable Support (24), the left height-adjustable support (42); the right height-adjustable support (24) and the left height-adjustable support (42) of the mobile device are respectively fixed with a displacement sensor measuring head (25). The invention can carry out on-line monitoring of various deformations under engineering environment simulation for multiple groups of test pieces, and has the characteristics of less required test devices, less occupied space and high efficiency.
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...
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IPC IPC(8): G01N33/38G01B5/30
Inventor 马保国温小栋李相国翟维三谭道纯
Owner WUHAN UNIV OF TECH