CN111579461B - Water stop performance testing device for joint filling material of hydraulic building - Google Patents
Water stop performance testing device for joint filling material of hydraulic building Download PDFInfo
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- CN111579461B CN111579461B CN202010564817.7A CN202010564817A CN111579461B CN 111579461 B CN111579461 B CN 111579461B CN 202010564817 A CN202010564817 A CN 202010564817A CN 111579461 B CN111579461 B CN 111579461B
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- 238000012360 testing method Methods 0.000 title claims abstract description 106
- 239000000463 material Substances 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000004831 Hot glue Substances 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000011056 performance test Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 239000003566 sealing material Substances 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- LJOOWESTVASNOG-UFJKPHDISA-N [(1s,3r,4ar,7s,8s,8as)-3-hydroxy-8-[2-[(4r)-4-hydroxy-6-oxooxan-2-yl]ethyl]-7-methyl-1,2,3,4,4a,7,8,8a-octahydronaphthalen-1-yl] (2s)-2-methylbutanoate Chemical compound C([C@H]1[C@@H](C)C=C[C@H]2C[C@@H](O)C[C@@H]([C@H]12)OC(=O)[C@@H](C)CC)CC1C[C@@H](O)CC(=O)O1 LJOOWESTVASNOG-UFJKPHDISA-N 0.000 description 2
- 229940127204 compound 29 Drugs 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011499 joint compound Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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Abstract
The invention belongs to the technical field of seepage prevention of hydraulic buildings, and particularly discloses a device for testing water stopping performance of a joint filling material of a hydraulic building. The testing device comprises a pressure tank, a pressurized water supply device, two test blocks, a special die for fixing the test blocks, two seal heads, a geomembrane and two pressing plates; the test block is cuboid, and the seal head is L-shaped. The beneficial effects are that: (1) The testing device can be filled with different joint filling materials; (2) The sealing heads with different dimensions can be configured in the testing device, the width of the sealing heads is equal to the width of the sealing materials in the testing process, and the distance between the top of the vertical edge of the sealing head and the top of the horizontal edge is equal to the depth of the sealing materials in the testing process, so that the sealing materials with different widths and depths can be filled in to perform step-by-step pressurization simulation field test; (3) The testing device provides scientific basis for the construction design, construction and maintenance of hydraulic engineering, and provides means for researching and developing special joint filling materials for high-performance hydraulic buildings.
Description
Technical Field
The invention belongs to the technical field of seepage prevention of hydraulic buildings, and particularly relates to a device for testing water stopping performance of a joint filling material of a hydraulic building.
Background
Most hydraulic buildings are required to be provided with expansion joints, and if the seepage prevention method is improper, the expansion joints are easy to leak. When hydraulic engineering is designed and constructed, effective water stopping measures are needed. The common methods include water stop of embedded water stop, surface joint filling water stop, or a combination of the two, and implementation of multi-channel water stop.
At present, the design of the water stop belt is relatively mature with the construction technology, and the joint filling water stop technology which looks simple is often ignored. In the construction and operation of the hydraulic building, the joint filling water-stopping material is easy to damage, the water-stopping material fails, leakage is caused, and the safety of the building is endangered.
When the expansion joint of the concrete panel is subjected to joint filling, firstly, whether the joint filling material can meet the water resistance of the material under the action of water pressure is considered, and secondly, the requirement of deformation of the expansion joint can be met by considering what joint filling structural form. The performance of the joint filling material can meet the water stopping requirement of the hydraulic building, and no relevant theoretical basis exists, so that relevant demonstration is required.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a water stop performance test device for a joint filling material of a hydraulic building.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The device for testing the water stopping performance of the joint filling material of the hydraulic building comprises a pressure tank, a pressurized water supply device, two test blocks, a special die for fixing the test blocks, two seal heads, a geomembrane and two pressing plates; the test block is cuboid, and the seal head is L-shaped;
The pressure tank comprises an upper tank body and a lower tank body, the lower end face of the upper tank body and the upper end face of the lower tank body are respectively extended outwards to form edges, a plurality of bolt holes which correspond to each other vertically are formed in the two edges, and the upper tank body and the lower tank body pass through the bolt holes through bolts to realize closed butt joint to form the whole pressure tank; the upper tank body is connected with a pressurized water supply device and a first pressure display; the bottom of the lower tank body is connected with a supporting leg and a leakage detection pipe, and a first valve is arranged on the leakage detection pipe;
The special die for fixing the test block comprises an upper die and a lower die; the upper die comprises two fixing plates, two first screws and four first movable nuts, wherein the two fixing plates are arranged in parallel at intervals, a screw hole is respectively formed in each of two ends of each fixing plate, the two first screws vertically penetrate through the two screw holes of the two fixing plates respectively, and then the two ends of each first screw are fixed by the first movable nuts; the lower die comprises two clamping grooves and two second screws, wherein the clamping grooves are cuboid, the length and the width of each clamping groove ensure that a test block can be just clamped inside the clamping groove, the depth of each clamping groove is smaller than the height of the test block, the two clamping grooves are arranged at intervals in parallel, four fixing nuts are arranged at the bottom of each clamping groove, the two fixing nuts of one clamping groove and the two fixing nuts of the other clamping groove are arranged on the same straight line perpendicular to the long side of the clamping groove, and the two second screws respectively penetrate through the four fixing nuts on the same straight line and are fixed by one second movable nut at the outer side of each fixing nut;
The two test blocks are respectively arranged in two clamping grooves of the lower die, the upper die is fixed at the middle upper part of the two test blocks, the two seal heads are respectively arranged at two ends of a gap between the two test blocks in a mode that the vertical edges of the L shape are outside and the horizontal edges are inside, the bottoms of the two seal heads are contacted with the edges of the two clamping grooves, the side walls are attached to the test blocks, and the tops of the two seal heads are level with the tops of the test blocks; filling and curing a caulking material in an area surrounded by the two test blocks and the two sealing heads, wherein the top of the caulking material is flush with the top of the test block, and the bottom of the caulking material is flush with the top of the transverse edge of the sealing heads; the pressure tank is characterized in that fine sand is filled in the lower tank body of the pressure tank, a special die for fixing test blocks is arranged in the fine sand together with the test blocks, the seal heads and the caulking materials, hot melt adhesives are coated on the tops of the two test blocks and the tops of the two seal heads, the thickness of the hot melt adhesives on the tops of the two seal heads is larger than that of the hot melt adhesives on the tops of the two test blocks, a geomembrane is paved above the hot melt adhesives, the size of the geomembrane is matched with the size of the pressure tank, a rectangular notch is formed in the position, opposite to the caulking materials, of the geomembrane, the notch width is 0-0.5 cm wider than the width of the caulking materials, the length is 2-4 cm shorter than the length of the caulking materials, the pressure plate is arranged above the geomembrane corresponding to the hot melt adhesives on the tops of the two seal heads in a pressing mode, expansion screw holes are formed in the positions, corresponding to the two ends of the pressure plate and the positions, corresponding to the test blocks, of the expansion screw holes are sequentially penetrated through the expansion screw holes on the pressure plate, the geomembrane, the hot melt adhesives and the expansion screw holes on the test blocks in the corresponding to the positions.
Preferably, for the convenience of experimental operation, an opening and closing device capable of separating and combining the upper tank body and the lower tank body is arranged between the upper tank body and the lower tank body of the pressure tank.
Preferably, the opening and closing device comprises two fixing seats, a rotating shaft and a fixing shaft; the two fixing seats are respectively and fixedly connected to the top position and the bottom position of the side wall of the lower tank body; the rotation axis is from bottom to top by vertical section and slope section end to end integrated into one piece, and vertical section rotates to be connected between two fixing bases, and slope section upwards inclines towards overhead tank one side, and the end of slope section is located the top of going up the jar body and with the middle part fixed connection of fixed axle, and the bottom of fixed axle is connected with the top of last jar body, top are connected with the handle.
Preferably, the handle is in the shape of a steering wheel.
Preferably, in order to improve the connection stability between the upper tank body and the rotating shaft, the middle position of the side wall of the upper tank body is fixedly connected with a U-shaped connecting piece, two ends of the U-shaped connecting piece are fixedly connected at the middle position of the side wall of the upper tank body, and the vertical section of the rotating shaft is positioned in an arc-shaped opening of the U-shaped connecting piece.
Preferably, the test block is formed by pouring concrete; the fixing plate, the sealing head and the pressing plate are made of stainless steel; the hot melt adhesive is KS hot melt adhesive.
Preferably, the pressurized water supply device comprises a water tank, a water pump and a buffer tank which are sequentially connected in series, wherein the buffer tank is connected to the pressure tank again, and a driving port of the water pump is connected with a motor.
Preferably, a second valve and a second pressure display are arranged at the tail end of the pipeline connected with the buffer tank and the pressure tank. The simultaneous arrangement of the first pressure display and the second pressure display may prevent one of the readings from being inaccurate.
Preferably, for facilitating experimental operation, the testing device further comprises a mobile cart, wherein the mobile cart comprises a bearing plate and a pushing frame; the pressure tank, the buffer tank, the water pump and the water tank are fixed on the bearing plate at intervals, and universal wheels are respectively arranged at four corners of the bottom of the bearing plate; the pushing frame comprises a push rod and two support rods fixedly connected with two ends of the push rod, and the bottoms of the two support rods are fixedly connected to the bearing plate.
Preferably, a reinforcing main rod parallel to the push rod is arranged between the two support rods, and a plurality of reinforcing auxiliary rods are arranged between the reinforcing main rod and the bearing plate.
The beneficial effects are that:
(1) The testing device can be filled with different joint filling materials;
(2) The sealing heads with different dimensions can be configured in the testing device, the width of the sealing heads is equal to the width of the sealing materials in the testing process, and the distance between the top of the vertical edge of the sealing head and the top of the horizontal edge is equal to the depth of the sealing materials in the testing process, so that the sealing materials with different widths and depths can be filled in to perform step-by-step pressurization simulation field test;
(3) The testing device provides scientific basis for the construction design, construction and maintenance of hydraulic engineering, and provides means for researching and developing special joint filling materials for high-performance hydraulic buildings.
Drawings
Fig. 1: the overall structure of the testing device is schematically shown;
Fig. 2: a schematic diagram of a front view structure of the pressure tank;
Fig. 3: schematic top view structure of pressure tank;
fig. 4: a longitudinal section of the pressure tank;
fig. 5: a right side view structural schematic diagram of the mobile cart;
fig. 6: schematic top view structure of upper die;
fig. 7: schematic diagram of front overlook structure of lower die;
fig. 8: schematic diagram of a back plane view structure of the lower die;
fig. 9: a structural schematic diagram of the seal head;
fig. 10: a front overlook structural schematic diagram of the special die for fixing the test block, the seal head and the joint filling material;
Fig. 11: FIG. 10 is a cross-sectional view A-A;
Fig. 12: a special die for fixing the test block is matched with the cross section of the test block, the seal head, the joint filling material, the KS hot melt adhesive, the geomembrane and the pressing plate;
Wherein, the reference numerals are as follows: 1-loading a tank body; 2-lower tank body; 3-edge; 4-bolts; 51-a first pressure display, 52-a second pressure display; 6-leak detection pipe; 61-first valve, 62-second valve; 7-fixing seats; 8-rotating shaft; 9-a fixed shaft; 10-a handle; an 11-U-shaped connector; 12-a water tank; 13-a water suction pump; 14-a buffer tank; 15-an electric motor; 16-a carrier plate; 17-universal wheels; 18-pushing rod; 19-supporting rods; 20-reinforcing the main rod; 21-reinforcing secondary bars; 22-a fixed plate; 231-first screw, 232-second screw; 241-a first movable nut, 242-a second movable nut; 25-clamping grooves; 26-fixing the nut; 27-test block; 28-end socket; 29-caulking material; 30-fine sand; 31-KS hot melt adhesive; 32-geomembrane; 33-pressing plate; 34-expansion screw.
Detailed Description
The invention will be further illustrated with reference to specific examples. It should be understood that the following examples are illustrative of the present invention and are not intended to limit the scope of the present invention.
Example 1
1-12, A hydraulic building joint filling material water stopping performance testing device comprises a pressure tank, a pressurized water supply device, a movable trolley, two test blocks 27, a fixed test block special die, two seal heads 28 (stainless steel), a geomembrane 32 and two pressing plates 33 (stainless steel); the test block 27 is cuboid, the seal head 28 is L-shaped, and the test block 27 is formed by pouring concrete;
The pressure tank comprises an upper tank body 1 and a lower tank body 2, wherein the lower end face of the upper tank body 1 and the upper end face of the lower tank body 2 are respectively extended outwards to form edges 3, a plurality of bolt holes which correspond to each other vertically are formed in the two edges 3, and the upper tank body 1 and the lower tank body 2 pass through the bolt holes through bolts 4 to realize closed butt joint to form the whole pressure tank; the top of the upper tank body 1 is connected with a pressurized water supply device and a first pressure display 51; the bottom of the lower tank body 2 is connected with three supporting legs and a leakage detection pipe 6, and a first valve 61 is arranged on the leakage detection pipe 6;
An opening and closing device capable of separating and closing the upper tank body 1 from the lower tank body 2 is arranged between the upper tank body 1 and the lower tank body 2 of the pressure tank, and comprises two fixed seats 7, a rotating shaft 8 and a fixed shaft 9; the two fixing seats 7 are respectively and fixedly connected to the top position and the bottom position of the side wall of the lower tank body 2; the rotating shaft 8 is integrally formed by connecting a vertical section and an inclined section from bottom to top in an end-to-end manner, the vertical section is rotationally connected between the two fixed seats 7, the inclined section is inclined upwards towards one side of the pressure tank, the tail end of the inclined section is positioned above the upper tank body 1 and is fixedly connected with the middle part of the fixed shaft 9, the bottom of the fixed shaft 9 is connected to the top of the upper tank body 1, the top of the fixed shaft is connected with a handle 10, and the handle 10 is in a steering disk shape; the middle part of the side wall of the upper tank body 1 is fixedly connected with a U-shaped connecting piece 11, two ends of the U-shaped connecting piece 11 are fixedly connected with the middle part of the side wall of the upper tank body 1, and the vertical section of the rotating shaft 8 is positioned in an arc-shaped opening of the U-shaped connecting piece 11;
the pressurized water supply equipment comprises a water tank 12, a water pump 13 and a buffer tank 14 which are sequentially connected in series, wherein the buffer tank 14 is connected to the pressure tank again, and a driving port of the water pump 13 is connected with a motor 15; a second valve 62 and a second pressure display 52 are arranged at the end of the pipeline of the buffer tank 14 connected with the pressure tank;
The mobile cart comprises a carrying plate 16 and a pushing frame; the pressure tank, the buffer tank 14, the water pump 13 and the water tank 12 are fixed on the bearing plate 16 at intervals, and universal wheels 17 are respectively arranged at four corners of the bottom of the bearing plate 16; the pushing frame comprises a pushing rod 18 and two supporting rods 19 fixedly connected with two ends of the pushing rod, the bottoms of the two supporting rods 19 are fixedly connected to the bearing plate 16, a reinforcing main rod 20 parallel to the pushing rod 18 is arranged between the two supporting rods 19, and a plurality of reinforcing auxiliary rods 21 are arranged between the reinforcing main rod 20 and the bearing plate 16;
The special die for fixing the test block comprises an upper die and a lower die; the upper mold comprises two fixing plates 22 (stainless steel), two first screws 231 and four first movable nuts 241, wherein the two fixing plates 22 are arranged in parallel at intervals, two screw holes are respectively formed in two ends of each fixing plate 22, the two first screws 231 vertically penetrate through the two screw holes of the two fixing plates 22 respectively, and then the two ends of each first screw 231 are fixed by the first movable nuts 241; the lower die comprises two clamping grooves 25 and two second screws 232, wherein the clamping grooves 25 are cuboid, the length and the width of the clamping grooves 25 ensure that a test block 27 can be just clamped inside the clamping grooves 25, the depth of the clamping grooves 25 is smaller than the height of the test block 27, the two clamping grooves 25 are arranged at intervals in parallel, four fixing nuts 26 are arranged at the bottom of each clamping groove 25, the two fixing nuts 26 of one clamping groove 25 and the two fixing nuts 26 of the other clamping groove 25 are on the same straight line perpendicular to the long side of the clamping groove 25, and the two second screws 232 respectively penetrate through four fixing nuts 26 on the same straight line and are fixed by one second movable nut 242 outside each fixing nut 26;
The two test blocks 27 are respectively arranged in the two clamping grooves 25 of the lower die, the upper die is fixed at the middle upper part of the two test blocks 27, the two seal heads 28 are respectively arranged at the two ends of a gap between the two test blocks 27 in a mode that the L-shaped vertical edges are outside and the L-shaped horizontal edges are inside, the bottoms of the two seal heads 28 are contacted with the edges of the two clamping grooves 25, the side walls are attached to the test blocks 27, and the tops of the two seal heads are flush with the tops of the test blocks 27; the inside of the area enclosed by the two test blocks 27 and the two seal heads 28 is filled and solidified with a caulking material 29, the top of the caulking material 29 is flush with the top of the test block 27, and the bottom is flush with the top of the transverse edge of the seal head 28; the lower tank body 2 of the pressure tank is internally filled with fine sand 30, a special die for fixing test blocks is arranged in the fine sand 30 together with the test blocks 27, the seal heads 28 and the joint filling materials 29, KS hot melt adhesives 31 are coated on the tops of the two test blocks 27 and the tops of the two seal heads 28, the thickness of the KS hot melt adhesives 31 on the tops of the two seal heads 28 is larger than that of the KS hot melt adhesives 31 on the tops of the two test blocks 27, a geomembrane 32 is paved above the KS hot melt adhesives 31, the size of the geomembrane 32 is matched with that of the pressure tank, a rectangular notch is formed in the position of the geomembrane 32, which is opposite to the joint filling materials 29, the notch width is 0.5 cm wider than the width of the joint filling materials 29, the length is 3 cm shorter than the length of the joint filling materials 29, the pressure plate 33 is pressed above the geomembrane 32 corresponding to the KS hot melt adhesives 31 on the tops of the two seal heads 28, expansion screw holes are formed in the two ends of the pressure plate 33 and the positions corresponding to the test blocks 27, and the expansion screw holes are sequentially penetrated through the expansion screw holes on the pressure plate 33 from top to bottom, the geomembrane 32, the KS hot melt adhesives 31 and the expansion screw holes 27 are pressed on the pressure plate 27 in sequence to fix the test blocks on the hot melt adhesive 31.
Working principle: after the upper tank body 1 is filled with water, the geomembrane 32 has a waterproof effect, so that water can only permeate into the joint filling material 29 below the geomembrane 32 from the notch of the geomembrane 32, and therefore, the water stopping performance of the joint filling material 29 can be measured by the test device.
The working process comprises the following steps:
(1) According to experimental requirements, the type of the joint filling material 29 is selected, the joint filling material 29 is filled between two test blocks 27 from top to bottom, but two ends of a gap between the two test blocks 27 are reserved, the joint filling material 29 is not filled in the reserved positions, the two seal heads 28 can be just placed in the length of the reserved positions, and the joint filling material 29 is cured for later use;
(2) Adjusting the second movable nut 242 so as to adjust the width between the two clamping grooves 25 to the width of the filling and curing joint compound 29 in the step (1), and then respectively installing the two test blocks 27 filled with the curing joint compound 29 obtained in the step (1) into the two clamping grooves 25 of the lower die;
(3) Determining whether to readjust the second movable nut 242 according to the experimental requirement so as to adjust the width between the two clamping grooves 25, wherein the adjustment determines whether the width of the caulking material 29 is stretched, the width of the caulking material 29 can be stretched by 0% -300%, and when the width of the caulking material 29 does not need to be readjust, the second movable nut 242 does not need to be adjusted, and the next step is directly carried out;
(4) Selecting two seal heads 28 with the dimension specifications matched with the width of the joint filling material 29 obtained after the stretching in the step (3), and clamping the two seal heads 28 at reserved positions at two ends of a gap between the two test blocks 27;
(5) Starting a pressurization test; and starting the motor 15 and the second valve 62, starting to fill water into the inner cavity of the tank body 1, observing the readings of the first pressure display 51 and the second pressure display 52, and performing a step-by-step pressurization simulation field test.
Claims (10)
1. The utility model provides a hydraulic building joint filling material sealing performance testing arrangement which characterized in that: the testing device comprises a pressure tank, a pressurized water supply device, two test blocks, a special die for fixing the test blocks, two seal heads, a geomembrane and two pressing plates; the test block is cuboid, and the seal head is L-shaped;
The pressure tank comprises an upper tank body and a lower tank body, the lower end face of the upper tank body and the upper end face of the lower tank body are respectively extended outwards to form edges, a plurality of bolt holes which correspond to each other vertically are formed in the two edges, and the upper tank body and the lower tank body pass through the bolt holes through bolts to realize closed butt joint to form the whole pressure tank; the upper tank body is connected with a pressurized water supply device and a first pressure display; the bottom of the lower tank body is connected with a supporting leg and a leakage detection pipe, and a first valve is arranged on the leakage detection pipe;
The special die for fixing the test block comprises an upper die and a lower die; the upper die comprises two fixing plates, two first screws and four first movable nuts, wherein the two fixing plates are arranged in parallel at intervals, a screw hole is respectively formed in each of two ends of each fixing plate, the two first screws vertically penetrate through the two screw holes of the two fixing plates respectively, and then the two ends of each first screw are fixed by the first movable nuts; the lower die comprises two clamping grooves and two second screws, wherein the clamping grooves are cuboid, the length and the width of each clamping groove ensure that a test block can be just clamped inside the clamping groove, the depth of each clamping groove is smaller than the height of the test block, the two clamping grooves are arranged at intervals in parallel, four fixing nuts are arranged at the bottom of each clamping groove, the two fixing nuts of one clamping groove and the two fixing nuts of the other clamping groove are arranged on the same straight line perpendicular to the long side of the clamping groove, and the two second screws respectively penetrate through the four fixing nuts on the same straight line and are fixed by one second movable nut at the outer side of each fixing nut;
The two test blocks are respectively arranged in two clamping grooves of the lower die, the upper die is fixed at the middle upper part of the two test blocks, the two seal heads are respectively arranged at two ends of a gap between the two test blocks in a mode that the vertical edges of the L shape are outside and the horizontal edges are inside, the bottoms of the two seal heads are contacted with the edges of the two clamping grooves, the side walls are attached to the test blocks, and the tops of the two seal heads are level with the tops of the test blocks; filling and curing a caulking material in an area surrounded by the two test blocks and the two sealing heads, wherein the top of the caulking material is flush with the top of the test block, and the bottom of the caulking material is flush with the top of the transverse edge of the sealing heads; the pressure tank is characterized in that fine sand is filled in the lower tank body of the pressure tank, a special die for fixing test blocks is arranged in the fine sand together with the test blocks, the seal heads and the caulking materials, hot melt adhesives are coated on the tops of the two test blocks and the tops of the two seal heads, the thickness of the hot melt adhesives on the tops of the two seal heads is larger than that of the hot melt adhesives on the tops of the two test blocks, a geomembrane is paved above the hot melt adhesives, the size of the geomembrane is matched with the size of the pressure tank, a rectangular notch is formed in the position, opposite to the caulking materials, of the geomembrane, the notch width is 0-0.5 cm wider than the width of the caulking materials, the length is 2-4 cm shorter than the length of the caulking materials, the pressure plate is arranged above the geomembrane corresponding to the hot melt adhesives on the tops of the two seal heads in a pressing mode, expansion screw holes are formed in the positions, corresponding to the two ends of the pressure plate and the positions, corresponding to the test blocks, of the expansion screw holes are sequentially penetrated through the expansion screw holes on the pressure plate, the geomembrane, the hot melt adhesives and the expansion screw holes on the test blocks in the corresponding to the positions.
2. The hydraulic building joint filling material water stopping performance testing device according to claim 1, wherein: an opening and closing device which can separate and close the upper tank body from the lower tank body is arranged between the upper tank body and the lower tank body of the pressure tank.
3. The hydraulic building joint filling material water stopping performance testing device according to claim 2, wherein: the opening and closing device comprises two fixing seats, a rotating shaft and a fixing shaft; the two fixing seats are respectively and fixedly connected to the top position and the bottom position of the side wall of the lower tank body; the rotation axis is from bottom to top by vertical section and slope section end to end integrated into one piece, and vertical section rotates to be connected between two fixing bases, and slope section upwards inclines towards overhead tank one side, and the end of slope section is located the top of going up the jar body and with the middle part fixed connection of fixed axle, and the bottom of fixed axle is connected with the top of last jar body, top are connected with the handle.
4. A hydraulic building joint filling material water stopping performance testing device according to claim 3, wherein: the handle is in a steering wheel shape.
5. A hydraulic building joint filling material water stopping performance testing device according to claim 3, wherein: the middle part position fixed connection U-shaped connecting piece of last jar body lateral wall, the both ends fixed connection of U-shaped connecting piece is in the middle part position of last jar body lateral wall, and the vertical section of axis of rotation is located the arc mouth of U-shaped connecting piece.
6. The hydraulic building joint filling material water stopping performance testing device according to claim 1, wherein: the test block is formed by pouring concrete; the fixing plate, the sealing head and the pressing plate are made of stainless steel; the hot melt adhesive is KS hot melt adhesive.
7. The hydraulic building joint filling material water stop performance test device according to any one of claims 1 to 6, wherein: the pressurized water supply equipment comprises a water tank, a water suction pump and a buffer tank which are sequentially connected in series, wherein the buffer tank is connected to the pressure tank again, and a driving port of the water suction pump is connected with a motor.
8. The hydraulic building joint filling material water stopping performance testing device according to claim 7, wherein: and a second valve and a second pressure display are arranged at the tail end of the pipeline connected with the buffer tank and the pressure tank.
9. The hydraulic building joint filling material water stopping performance testing device according to claim 7, wherein: the test device further comprises a movable cart, wherein the movable cart comprises a bearing plate and a pushing frame; the pressure tank, the buffer tank, the water pump and the water tank are fixed on the bearing plate at intervals, and universal wheels are respectively arranged at four corners of the bottom of the bearing plate; the pushing frame comprises a push rod and two support rods fixedly connected with two ends of the push rod, and the bottoms of the two support rods are fixedly connected to the bearing plate.
10. The hydraulic building joint filling material water stopping performance testing device according to claim 9, wherein: a reinforcing main rod parallel to the push rod is arranged between the two support rods, and a plurality of reinforcing auxiliary rods are arranged between the reinforcing main rod and the bearing plate.
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