A device for testing the permeability of polyurea coating materials
A coating material and permeability technology, which is applied in the field of polyurea coating material permeability testing device, can solve the problems of no construction joints, inability to provide high or low temperature experimental environment, and inability to simulate the use environment of polyurea coating materials, etc. To achieve the effect of ensuring effectiveness, good overall sealing, and improving reference value
Active Publication Date: 2021-06-08
HOHAI UNIV
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Problems solved by technology
However, this waterproof material permeability testing device cannot provide a high temperature or low temperature experimental environment, and the test specimens used for testing do not have construction joints in actual application, and cannot simulate the use environment of polyurea coating materials in tunnels, and cannot be used for polyurea coatings. Materials for bi-directional water pressure resistance
Method used
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Embodiment 1
[0030] like Figure 1-8 As shown, a polyurea coating material permeability testing device includes a water inlet system, a right panel 8, a temperature control system, a test piece 11, a left panel 17, a water outlet system and a base 27, and the water inlet system includes a water inlet The pipeline 7 and the water inlet tank 1, one end of the water inlet pipeline 7 is placed in the water inlet tank 1, and the other end is connected to the side of the test piece 11 through the right panel 8; Water valve 28, water inlet pressurization device 2 and water inlet pressure gauge 3, water inlet pressurization device 2 is used to simulate the water pressure outside the tunnel; the temperature control system is composed of temperature control box 15, temperature gauge 9, wire 10 and A temperature sensor 12 is used to adjust the temperature of the test piece 11; the temperature sensor 12 is connected to the temperature gauge 9 by a wire 10; the test piece 11 is a concrete test piece wi...
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The invention discloses a polyurea coating material permeability testing device, which includes a water inlet system, a test piece, a temperature control system, a water outlet system and a base; the water inlet system includes a water inlet pipe and a water inlet box, and the water inlet box and The water inlet pipe between the right panels is connected with a water inlet pressurization device, a water inlet valve, a water inlet pressure gauge, a water inlet flow meter, a water inlet measuring cylinder and a water inlet measuring cylinder valve; the temperature control system is used to adjust the temperature of the specimen The water outlet system includes an outlet pipe and an outlet tank, and the outlet pipe between the outlet tank and the left panel is connected with an outlet pressure device, an outlet valve, an outlet pressure gauge, an outlet flow meter, an outlet measuring cylinder and an outlet measuring cylinder valve. The test piece is a concrete test piece with cracks, and one side of the test piece is coated with a polyurea coating material; the present invention can simulate the use environment of the polyurea material, and the pressurized high-pressure water reaches the test piece through the pipelines in the two side panels. The position of the parts can be used to test the water pressure resistance of the polyurea coating from both sides at different temperatures.
Description
technical field [0001] The invention relates to the field of performance testing of anti-seepage coating materials, in particular to a device for testing the permeability of polyurea coating materials. Background technique [0002] The tunnel through the Yellow River is a double-line large-scale high-pressure water delivery tunnel constructed by the shield method. It adopts a new type of prestressed composite double-layer lining structure. The inner and outer linings are separated by drainage cushions and work independently; the outer lining is assembled reinforced concrete. Segment structure, lined with cast-in-place prestressed concrete structure. The anchorage groove of the tunnel through the Yellow River is located on the side wall of the tunnel, and the surface has been poured with concrete. A circular construction joint is formed between the newly poured concrete and the original concrete. Due to the difference in dry shrinkage between the old and new concrete, the sur...
Claims
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IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 王志奎王媛彭程程牛玉龙张育杰
Owner HOHAI UNIV