Concrete water absorption rate testing device in parallel sustained load direction
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A testing device and a technology for concrete specimens, which are applied in measuring devices, using stable tension/pressure to test the strength of materials, and using substances to absorb and weigh. Real-time and other problems to achieve the effect of avoiding stress loss
Active Publication Date: 2019-05-28
QINGDAO TECHNOLOGICAL UNIVERSITY
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[0005] The purpose of the present invention is to overcome the problems existing in the prior art that it is difficult to monitor the concrete water absorption test parallel to the load-bearing direction and the problem that the water absorption of concrete specimens cannot be monitored in real time and continuously, and to develop a method that is parallel to the load-bearing direction. Concrete water absorption test device
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Embodiment 1
[0020] The main structure of the concrete water absorption testing device parallel to the load-bearing direction involved in this embodiment includes a concrete specimen 1, a lower steel plate 2, a steel hoop 3, a steel column group 4, an annular plate 5, a silicone tube 6, an upper steel plate 7, Threaded rod 8, spring 9, nut 10, water supply tank 11, water injection pipe 12, water injection valve 13, water storage tank 14, air pressure balance hole 15, silicone hose 16, water outlet pipe 17, mass sensor 18, multi-channel data collector 19 , a computer 20 and a strain gauge 21; the lower surface of the cylindrical concrete specimen 1 is bonded to the lower steel plate 2 of the rectangular plate structure, and the top periphery of the concrete specimen 1 is provided with a ring-shaped steel hoop 3 , the upper surface of the concrete test piece 1 is adhesively connected with the steel cylinder group 4 of circular structure, the outer periphery of the steel cylinder group 4 is pr...
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Abstract
The invention belongs to the technical field of concrete material durability detection equipment, in particular to a concrete water absorption rate testing device in a parallel sustained load action direction. A main body structure comprises a concrete test piece, a lower steel plate, a steel hoop, a steel cylinder group, an annular plate, a silica gel tube, an upper steel plate, a threaded rod, aspring, a nut, a water supply tank, a water injection pipe, a water injection valve, a water storage tank, an air pressure balance hole, a silica gel hose, a water outlet pipe, a mass sensor, a multi-channel data acquisition device, a computer and a strain gauge. The concrete test piece is loaded by using the steel cylinder group so as to realize a concrete water absorption amount test in the parallel sustained load direction, the surface water absorption rate of concrete in the parallel sustained load direction is measured while a continuous load action is applied; the coupling problem of the load action and the concrete water absorption process in the parallel sustained load direction can be solved, and a foundation is laid for researching a concrete adsorption influence mechanism and change rule of the sustained load direction; the device is simple in structure, easy and convenient to operate and friendly in application environment.
Description
Technical field: [0001] The invention belongs to the technical field of concrete material durability testing equipment, and in particular relates to a concrete water absorption testing device parallel to the bearing action direction. Background technique: [0002] Concrete will not only suffer from chlorine salt erosion, freeze-thaw, and carbonation during its service, but also wind, vehicle, and wave loads will accelerate its deterioration process, causing concrete to crack or even peel off. The micro-cracks produced by the load have a significant impact on the durability of the concrete structure, and the dual effects of the service environment will accelerate the performance degradation of the concrete. In addition, the presence and transport of moisture is an indispensable key factor for many durability degradation problems of concrete materials. Moisture and the harmful medium it carries invade the interior of the concrete through capillary action, resulting in a serie...
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