A locking device for tensile test of concrete core samples
A concrete core sample, tensile test technology, applied in the direction of measuring device, using stable tension/pressure test material strength, instruments, etc., can solve the problems of core sample fixation is not firm, long test period, etc., to achieve simple structure, Low cost, easy installation and use
Active Publication Date: 2016-06-22
ANHUI & HUAI RIVER WATER RESOURCES RES INST +1
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Problems solved by technology
[0004] The purpose of the present invention is to solve the shortcomings of the concrete core sample tensile test at the present stage that the core sample is not firmly fixed and the test period is long, and a locking device for the concrete core sample tensile test is proposed.
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[0016] Such as figure 1 and figure 2 As shown, a kind of concrete core sample tensile test locking device provided by the present invention is characterized in that comprising:
[0017] Support base 3, support base 3 comprises sleeve 3a, is provided with flange 3b at both ends of sleeve, and described pull gauge 10 is connected on the flange 3b above, and sleeve is placed on concrete 6, and sleeve 3a corresponds to the core sample 6a of the concrete 6, and the locking member 1 is arranged inside the sleeve 3a.
[0018] combine image 3 As shown, the locking member 1 includes a stud 1a, a tapered locking sleeve 1b is provided at one end of the stud, and three screw holes 1c are provided at the other end, and the locking sleeve is sleeved on the core sample 6a In addition, the inner surface of the locking sleeve is provided with a clamping thread 1c, which can increase the friction between the locking sleeve and the core sample, so that the locking member 1 will not slip whe...
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The invention relates to a locking device for a tensile test of a concrete core sample. The locking device is characterized by comprising a supporting seat (3) which is internally provided with a locking piece (1) comprising a stud (1a), wherein one end of the stud (1a) is provided with a tapered locking sleeve (1b), and the other end of the stud (1a) is provided with at least two screw holes (1c); the locking sleeve (1b) is sleeved with a sleeve (2); the stud (1a) is matched and connected with a locking nut (4) correspondingly matched with the locking sleeve (1b); the supporting seat (3) is also provided with a tension gauge (10) which is matched and connected with one of the screw holes (1c) through a screw rod (7). The locking device has the advantages of being simple and light in structure, convenient to use and install, easy to overhaul, low in cost, convenient to carry and capable of testing and evaluating the bonding conditions of new and old concrete structures and easily taking out the concrete core sample which is not easily taken out after being drilled.
Description
technical field [0001] The invention relates to a mechanical locking device, in particular to a concrete core sample tensile test locking device. Background technique [0002] In the 1960s and 1970s, many new water conservancy projects and construction projects were built in my country. After half a century of operation of these projects, the surface of many buildings has defects of aging concrete and exposed steel corrosion. When this type of building is reinforced, many schemes choose the method of removing the aged concrete and outsourcing the new concrete. Obviously, the bonding strength of the new and old concrete after reinforcement is very important. The method currently used is mainly to stick the tensile steel plate on the end of the core sample left on the structure after the drilling rig is drilled, and to test the bond strength of the new and old concrete by applying tension to the steel plate through a tensile tester. [0003] The biggest disadvantage of the me...
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IPC IPC(8): G01N3/04G01N3/08
Inventor 孔楠楠邰洪生程海英陈勇杨智许可
Owner ANHUI & HUAI RIVER WATER RESOURCES RES INST