Permeable concrete permeability coefficient and compression resistance detection device

Abstract

The utility model discloses a permeable concrete permeability coefficient and compression resistance detection device which comprises a bottom bedplate, a lifting upright post, a bearing plate, a test piece clamping body, a permeability coefficient detection part and a compression resistance detection part, the test piece clamping body comprises a clamping plate and a pervious concrete test piece which is detachably connected, and the pervious concrete test piece comprises a pervious concrete block and a side sealing piece; the bottom end of the transparent cylinder is inserted into the top of the bearing plate, the water supply component is connected with the transparent cylinder, the lower liquid tank is arranged on the bottom table plate and located at the bottom of the clamping plate, and the measuring cylinder is communicated with the lower liquid tank. The compression resistance detection part comprises a support frame arranged on the bottom table plate, a hydraulic cylinder arranged at the top of the support frame in a penetrating manner and a pressing plate arranged at the telescopic end of the hydraulic cylinder. The device is reasonable in design, can detect the permeability coefficient and the compressive strength of the pervious concrete, is convenient to disassemble and assemble, avoids side permeation in the permeability detection, and ensures that the permeability coefficient and the compressive strength of the pervious concrete are qualified.

Description

Technical Field

[0001] The utility model belongs to the technical field of pervious concrete detection, and particularly relates to a pervious concrete permeability coefficient and compressive strength detection device. Background Technique

[0002] Pervious concrete is a key material for building a sponge city. During rainfall, rainwater on the road surface seeps into the underground soil through the interconnected pores inside the pervious concrete, which can effectively alleviate urban waterlogging. However, the permeability coefficient of pervious concrete not only depends on the pervious and compressive properties of the material itself, but is also affected by factors such as concrete formula, compaction degree, pore structure, and construction quality. Therefore, it is necessary to conduct detection tests on the pervious and compressive properties of pervious concrete to meet the construction requirements.

[0003] Currently, such as the pervious concrete perviousness simulation test device in patent CN202010162550.9, it is necessary to place the pervious concrete to be tested inside the bearing plate, and then transfer the test water inside the water storage tank from the water extraction pipe to the water outlet pipe for the perviousness test. Then the test water will flow into the test box 2 from the water outlet pipe for the perviousness test. However, there is no seal between the pervious concrete and the test box 2, so that water will permeate through the side gap, which will affect the test results; and only the perviousness simulation test can be carried out.

[0004] Therefore, there is an urgent need for a pervious concrete permeability coefficient and compressive strength detection device with a simple structure and reasonable design, which can detect the permeability coefficient and compressive strength of pervious concrete, is convenient to disassemble and assemble, avoids side infiltration during perviousness detection, and ensures that the permeability coefficient and compressive strength of pervious concrete are qualified. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a pervious concrete permeability coefficient and compressive strength detection device aiming at the deficiencies in the above-mentioned prior art. The device has a simple structure and reasonable design, can detect the permeability coefficient and compressive strength of pervious concrete, is convenient to disassemble and assemble, avoids side infiltration during perviousness detection, and ensures that the permeability coefficient and compressive strength of pervious concrete are qualified.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is: a pervious concrete permeability coefficient and compressive strength detection device, which is characterized in that it includes a bottom plate, a lifting column arranged on the bottom plate, a bearing plate connected to the lifting column, a specimen clamping body installed under the bearing plate, a permeability coefficient detection component, and a compressive strength detection component arranged on the bottom plate;

[0007] The test piece clamping body includes a clamping plate connected to the bearing plate and a permeable concrete test piece clamped between the bearing plate and the clamping plate and detachably connected. The permeable concrete test piece includes a permeable concrete block and a side seal arranged outside the permeable concrete block;

[0008] The water permeability coefficient detection component includes a transparent cylinder with its bottom end inserted into the top of the bearing plate, a water supply component connected to the transparent cylinder, a lower liquid tank arranged on the bottom plate and located at the bottom of the clamping plate, and a graduated cylinder communicated with the lower liquid tank;

[0009] The compressive strength detection component includes a support frame arranged on the bottom plate, a hydraulic cylinder penetrating through the top of the support frame, and a pressing plate arranged at the telescopic end of the hydraulic cylinder.

[0010] For the above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete, it is characterized in that: the lifting column includes a sleeve connected to the bottom of the bearing plate, a screw rod arranged on the bottom plate and extending into the sleeve, and an adjusting nut sleeved on the screw rod and fitting against the bottom of the sleeve. A locking nut is sleeved on the screw rod.

[0011] For the above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete, it is characterized in that: the side seal includes a rubber membrane sleeved outside the permeable concrete block, a receiving cylinder clamped outside the rubber membrane, a lower horizontal ring plate clamped outside the bottom end of the receiving cylinder, and an upper horizontal ring plate clamped outside the top end of the receiving cylinder. The top surface of the upper horizontal ring plate is flush with the top surface of the permeable concrete block, and the bottom surface of the lower horizontal ring plate is flush with the bottom surface of the permeable concrete block. The lower horizontal ring plate is inserted into the top surface of the clamping plate, and the upper horizontal ring plate is inserted into the bottom of the bearing plate.

[0012] For the above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete, it is characterized in that: a lower large-diameter through hole and a lower small-diameter through hole communicated with the lower large-diameter through hole are arranged at the central position of the clamping plate. A lower step groove for inserting the lower horizontal ring plate is formed at the connection of the lower large-diameter through hole and the lower small-diameter through hole;

[0013] An upper large-diameter through hole and an upper small-diameter through hole communicated with the upper large-diameter through hole are arranged at the central position of the bearing plate. An upper step groove for inserting the upper horizontal ring plate is formed at the connection of the upper large-diameter through hole and the upper small-diameter through hole; the bottom end of the transparent cylinder is inserted into the upper small-diameter through hole, and the bottom end of the transparent cylinder abuts against the top surfaces of the upper horizontal ring plate and the receiving cylinder;

[0014] The inner diameter of the transparent cylinder, the lower small-diameter through hole and the diameter of the permeable concrete block are the same and coaxially arranged.

[0015] The above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete is characterized in that: the water supply component includes a water tank arranged on the bottom plate, a water pump arranged in the water tank, and an upper water delivery pipe connected to the output end of the water pump. The upper water delivery pipe communicates with the top of the transparent cylinder, and an upper valve is arranged on the upper water delivery pipe;

[0016] An upper overflow pipe is arranged on the side wall of the transparent cylinder, a lower overflow pipe is arranged on the lower liquid tank, a first branch overflow pipe and a second branch overflow pipe are arranged on the lower overflow pipe, and a first valve is arranged on the first branch overflow pipe; a second valve is arranged on the second branch overflow pipe, and the measuring cylinder is arranged on the bottom plate.

[0017] The above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete is characterized in that: the receiving cylinder includes a first semi-cylindrical barrel and a second semi-cylindrical barrel. A convex block is arranged on the side wall of the first semi-cylindrical barrel, and a groove matching the convex block is arranged on the side wall of the second semi-cylindrical barrel. The first semi-cylindrical barrel and the second semi-cylindrical barrel are inserted and connected through the convex block and the groove;

[0018] Both the upper horizontal ring plate and the lower horizontal ring plate include two semi-circular ring plates, and the ends of the two semi-circular ring plates are connected by screw nuts.

[0019] The above-mentioned device for detecting the water permeability coefficient and compressive strength of permeable concrete is characterized in that: an opening is arranged at the top of the lower liquid tank, the bottom of the permeable concrete test piece extends into the lower liquid tank, and the lower overflow pipe is higher than the bottom of the permeable concrete block.

[0020] The utility model has the following advantages compared with the prior art:

[0021] 1. The utility model is provided with a permeable concrete block, a side seal, a clamping plate and a bearing plate, so as to realize the sealed connection of the side and end parts of the permeable concrete block, avoid side penetration during water permeability detection, and ensure the qualified water permeability coefficient of the permeable concrete.

[0022] 2. The utility model is provided with a clamping plate and a bearing plate, so that the permeable concrete test piece can be detachably clamped between the clamping plate and the bearing plate, which is not only convenient to adapt to the thickness of different permeable concrete test pieces, but also convenient for the subsequent disassembly of the permeable concrete test body after the water permeability coefficient detection, so as to facilitate the compressive strength detection; secondly, by clamping the permeable concrete test piece with the clamping plate and the bearing plate, the perpendicularity of the permeable concrete test piece is improved, so as to ensure the vertical penetration detection of the permeable concrete block in the permeable concrete test piece.

[0023] 3. The present utility model is provided with a water supply component to convey the water pumped by the water supply component to the top of the permeable concrete block, and part of the water enters the lower liquid tank through the permeable concrete to obtain the permeability coefficient of the permeable concrete. A compressive strength detection component is provided. After the permeability coefficient of the permeable concrete is detected, the permeable concrete block is disassembled and installed on the bearing plate, and then the hydraulic cylinder drives the pressure plate to apply pressure to the permeable concrete block on the bearing plate to complete the compressive strength detection.

[0024] To sum up, the structure of the present utility model is simple and the design is reasonable, so that the permeability coefficient and compressive strength of the permeable concrete can be detected, the disassembly and assembly are convenient, the side leakage during the permeability detection is avoided, and the qualified permeability coefficient and compressive strength of the permeable concrete are ensured.

[0025] The technical solutions of the present utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the present utility model.

[0027] Figure 2 It is a schematic structural diagram of the permeable concrete test piece, clamping plate and bearing plate of the present utility model.

[0028] Figure 3 It is a schematic structural diagram of the permeable concrete test piece of the present utility model.

[0029] Figure 4 It is a state diagram when the compressive strength of the permeable concrete test piece of the present utility model is detected.

[0030] Description of the reference numerals:

[0031] 1 - bottom base plate; 2 - lower liquid tank; 2-1 - first branch overflow pipe;

[0032] 2-2 - first valve; 3 - lifting column; 3-1 - screw;

[0033] 3-2 - adjusting nut; 3-3 - locking nut; 3-4 - sleeve;

[0034] 4 - pressure plate; 5 - bearing plate; 5-1 - upper large-diameter through hole;

[0035] 5-2 - upper small-diameter through hole; 6 - permeable concrete test piece; 6-1 - upper horizontal ring plate;

[0036] 6-2 - receiving cylinder; 6-21 - first semi-cylinder; 6-22 - second semi-cylinder;

[0037] 6-23 - upper groove; 6-24 - lower groove;

[0038] 6-3 - Lower horizontal ring plate; 6-31 - Semi-circular ring plate; 6-32 - Screw nut

[0039] 6-4 - Permeable concrete block; 7 - Clamping plate; 7-1 - Lower large-diameter through hole

[0040] 7-2 - Lower small-diameter through hole; 8 - Transparent cylinder; 8-1 - Upper overflow pipe

[0041] 9 - Water tank; 9-1 - Water pump; 9-2 - Upper water delivery pipe

[0042] 10 - Upper valve; 11 - Lower overflow pipe; 12 - Outer connecting screw

[0043] 13 - Second valve; 14 - Second branch overflow pipe; 15 - Measuring cylinder

[0044] 16 - Hydraulic cylinder; 17 - Support frame; 18 - Pressure sensor Detailed implementation mode

[0045] As Figures 1 to 4 shown, the utility model includes a bottom plate 1, a lifting column 3 arranged on the bottom plate 1, a bearing plate 5 connected to the lifting column 3, a specimen clamping body installed at the lower part of the bearing plate 5, a permeability coefficient detection component, and a compressive strength detection component arranged on the bottom plate 1;

[0046] The specimen clamping body includes a clamping plate 7 connected to the bearing plate 5 and a permeable concrete specimen 6 clamped between the bearing plate 5 and the clamping plate 7 and detachably connected. The permeable concrete specimen 6 includes a permeable concrete block 6-4 and a side seal arranged outside the permeable concrete block 6-4;

[0047] The permeability coefficient detection component includes a transparent cylinder 8 with the bottom end inserted into the top of the bearing plate 5, a water supply component connected to the transparent cylinder 8, a lower liquid tank 2 arranged on the bottom plate 1 and located at the bottom of the clamping plate 7, and a measuring cylinder 15 communicated with the lower liquid tank 2;

[0048] The compressive strength detection component includes a support frame 17 arranged on the bottom plate 1, a hydraulic cylinder 16 penetrating through the top of the support frame 17, and a pressing plate 4 arranged at the telescopic end of the hydraulic cylinder 16.

[0049] In this embodiment, the lifting column 3 includes a sleeve 3-4 connected to the bottom of the bearing plate 5, a screw 3-1 arranged on the bottom plate 1 and extending into the sleeve 3-4, an adjusting nut 3-2 sleeved on the screw 3-1 and fitting against the bottom of the sleeve 3-4, and a locking nut 3-3 sleeved on the screw 3-1.

[0050] In this embodiment, the side seal includes a rubber membrane sleeved outside the permeable concrete block 6-4, a receiving cylinder 6-2 clamped outside the rubber membrane, a lower horizontal ring plate 6-3 clamped outside the bottom end of the receiving cylinder 6-2, and an upper horizontal ring plate 6-1 clamped outside the top end of the receiving cylinder 6-2. The top surface of the upper horizontal ring plate 6-1 is flush with the top surface of the permeable concrete block 6-4, and the bottom surface of the lower horizontal ring plate 6-3 is flush with the bottom surface of the permeable concrete block 6-4. The lower horizontal ring plate 6-3 is inserted into the top surface of the clamping plate 7, and the upper horizontal ring plate 6-1 is inserted into the bottom of the bearing plate 5.

[0051] In this embodiment, a lower large-diameter through hole 7-1 and a lower small-diameter through hole 7-2 communicating with the lower large-diameter through hole 7-1 are provided at the central position of the clamping plate 7. A lower step groove for inserting the lower horizontal ring plate 6-3 is formed at the connection of the lower large-diameter through hole 7-1 and the lower small-diameter through hole 7-2;

[0052] An upper large-diameter through hole 5-1 and an upper small-diameter through hole 5-2 communicating with the upper large-diameter through hole 5-1 are provided at the central position of the bearing plate 5. An upper step groove for inserting the upper horizontal ring plate 6-1 is formed at the connection of the upper large-diameter through hole 5-1 and the upper small-diameter through hole 5-2; The bottom end of the transparent cylinder 8 is inserted into the upper small-diameter through hole 5-2, and the bottom end of the transparent cylinder 8 abuts against the top surfaces of the upper horizontal ring plate 6-1 and the receiving cylinder 6-2;

[0053] The inner diameter of the transparent cylinder 8, the lower small-diameter through hole 7-2, and the diameter of the permeable concrete block 6-4 are the same and are arranged coaxially.

[0054] In this embodiment, the water supply component includes a water tank 9 provided on the bottom plate 1, a water pump 9-1 provided in the water tank 9, and an upper water delivery pipe 9-2 connected to the output end of the water pump 9-1. The upper water delivery pipe 9-2 communicates with the top of the transparent cylinder 8, and an upper valve 10 is provided on the upper water delivery pipe 9-2;

[0055] An upper overflow pipe 8-1 is provided on the side wall of the transparent cylinder 8, a lower overflow pipe 11 is provided on the lower liquid tank 2, a first branch overflow pipe 2-1 and a second branch overflow pipe 14 are provided on the lower overflow pipe 11, and a first valve 2-2 is provided on the first branch overflow pipe 2-1; A second valve 13 is provided on the second branch overflow pipe 14, and the measuring cylinder 15 is provided on the bottom plate 1.

[0056] In this embodiment, the receiving cylinder 6-2 includes a first semi-cylinder 6-21 and a second semi-cylinder 6-22. A convex block is provided on the side wall of the first semi-cylinder 6-21, and a groove for cooperating with the convex block is provided on the side wall of the second semi-cylinder 6-22. The first semi-cylinder 6-21 and the second semi-cylinder 6-22 are inserted and connected through the convex block and the groove;

[0057] Both the upper horizontal ring plate 6-1 and the lower horizontal ring plate 6-3 each include two semi-circular ring plates 6-31, and the ends of the two semi-circular ring plates 6-31 are connected by screw nuts 6-32.

[0058] In this embodiment, an opening is provided at the top of the lower liquid tank 2, the bottom of the permeable concrete specimen 6 extends into the lower liquid tank 2, and the lower overflow pipe 11 is higher than the bottom of the permeable concrete block 6-4.

[0059] In this embodiment, a receiving hole for the screw 3-1 to extend into is provided inside the sleeve 3-4.

[0060] In this embodiment, the lifting column 3 is provided. On the one hand, it is to raise the transparent cylinder 8 and the bearing plate 5 to facilitate the installation of the permeable concrete specimen 6; on the other hand, it is to adjust the height to adapt to the installation of permeable concrete specimens 6 with different thicknesses; in addition, it is also convenient to adjust the penetration depth of the permeable concrete specimen 6 into the lower liquid tank 2 after the installation of the permeable concrete specimen 6.

[0061] In this embodiment, during actual use, the locking nut 3-3 abuts against the adjusting nut 3-2.

[0062] In this embodiment, when it is necessary to adjust the lifting column 3, first loosen the locking nut 3-3 to disengage from the adjusting nut 3-2, and then screw the adjusting nut 3-2. During the screwing process of the adjusting nut 3-2, it abuts against the bottom of the sleeve 3-4, so as to adjust the length of the screw 3-1 extending out of the sleeve 3-4 to realize the height adjustment of the lifting column 3; when the adjustment is in place, screw the locking nut 3-3 to abut against the adjusting nut 3-2 for auxiliary locking, improving the stability.

[0063] In this embodiment, during actual use, lower grooves 6-24 and upper grooves 6-23 are provided on the outer side wall of the receiving cylinder 6-2. Both the lower grooves 6-24 and the upper grooves 6-23 each include two semi-circular grooves. The bottom of the rubber membrane turns outwards to the lower grooves 6-24 on the outer side wall of the receiving cylinder 6-2. The turned-down end of the rubber membrane is sleeved with a lower rubber band and tightened. The lower rubber band is received in the lower grooves 6-24. The top of the rubber membrane turns outwards to the upper grooves 6-23 on the outer side wall of the receiving cylinder 6-2. The turned-up end of the rubber membrane is sleeved with an upper rubber band and tightened. The upper rubber band is received in the upper grooves 6-23.

[0064] In this embodiment, the rubber membrane is provided to seal the gap between the outer side wall of the permeable concrete block 6-4 and the inner side wall of the receiving cylinder 6-2, so as to make the water penetrate along the top surface of the permeable concrete block 6-4, improving the detection accuracy.

[0065] In this embodiment, lower horizontal ring plate 6-3 and upper horizontal ring plate 6-1 are clamped at both ends of receiving cylinder 6-2 to clamp both ends of receiving cylinder 6-2 and permeable concrete block 6-4, so that the outer sidewall of permeable concrete block 6-4, the rubber membrane and receiving cylinder 6-2 are in close contact, thereby realizing side sealing. In addition, the detachable installation of permeable concrete block 6-4 and receiving cylinder 6-2 can be realized, improving the disassembly convenience, facilitating the subsequent detection of compressive strength, and different receiving cylinders 6-2 with different heights can be replaced according to the detection requirements to realize the detection of specimens with different thicknesses. In addition, after the three form a whole, they are connected to clamping plate 7 and bearing plate 5 to prevent the specimen from shifting;

[0066] Secondly, the contact area at both ends of permeable concrete block 6-4 is increased through lower horizontal ring plate 6-3 and upper horizontal ring plate 6-1, thereby ensuring stable insertion.

[0067] In this embodiment, in actual use, sealing rings are additionally arranged at the bottom end of lower horizontal ring plate 6-3 and receiving cylinder 6-2 at the lower step groove and at the top end of upper horizontal ring plate 6-1 and receiving cylinder 6-2 at the upper step groove, so as to further improve the sealing performance at both ends of receiving cylinder 6-2.

[0068] In this embodiment, in actual use, lower step groove and upper step groove are provided to realize the insertion of lower horizontal ring plate 6-3 and upper horizontal ring plate 6-1. By limiting the installation of lower horizontal ring plate 6-3 and upper horizontal ring plate 6-1, the permeable concrete specimen 6 is ensured to be installed in place.

[0069] In this embodiment, in actual use, lower large-diameter through hole 7-1, lower small-diameter through hole 7-2, upper large-diameter through hole 5-1 and upper small-diameter through hole 5-2 are provided to connect the top of transparent cylinder 8 and permeable concrete block 6-4, and the bottom of permeable concrete block 6-4 is connected to lower liquid tank 2, so as to realize the collection of water permeating through the top surface of permeable concrete block 6-4.

[0070] In this embodiment, transparent cylinder 8 is made of transparent acrylic plate, which is convenient for direct observation.

[0071] In this embodiment, in actual use, an upper flow sensor can be arranged on upper overflow pipe 8-1, and a lower flow sensor can be arranged on lower overflow pipe 11. The upper flow sensor and the lower flow sensor refer to conventional sensors in the art.

[0072] In this embodiment, in actual use, when detecting the compressive strength, convex load-bearing block 14 needs to be inserted at the bottom of bearing plate 5. The upper convex part of convex load-bearing block 14 is inserted into upper small-diameter through hole 5-2, and the lower part of convex load-bearing block 14 is inserted into upper large-diameter through hole 5-1 and extends out, so that the bottom of convex load-bearing block 14 is placed on bottom plate 1, and clamping plate 7 is installed on the top surface of bearing plate 5.

[0073] In this embodiment, during actual use, a pressure sensor 18 is embedded in the top of the convex load-bearing block 14. The pressure sensor 18 can refer to the HZC-H1 planar load cell and be paired with a control instrument to realize the display of detection data, or other conventional methods in the art can be adopted.

[0074] In this embodiment, during actual use, a flexible hose can be used for the pipeline, which is convenient to pull.

[0075] When the present utility model is specifically used, the permeable concrete block 6-4 sleeved with a rubber membrane is loaded into the receiving cylinder 6-2, and the bottom of the rubber membrane is turned outwards to the lower groove 6-24 on the outer wall of the receiving cylinder 6-2. The turned-out end of the rubber membrane is sleeved with a lower rubber band and tightened. The lower rubber band is accommodated in the lower groove 6-24. The top of the rubber membrane is turned outwards to the upper groove 6-23 on the outer wall of the receiving cylinder 6-2. The turned-up end of the rubber membrane is sleeved with an upper rubber band and tightened. The upper rubber band is accommodated in the upper groove 6-23. Then, both ends of the receiving cylinder 6-2 are clamped between the lower horizontal ring plate 6-3 and the upper horizontal ring plate 6-1 to form a permeable concrete test piece 6.

[0076] Loosen the locking nut 3-3 to disengage from the adjusting nut 3-2, and then screw the adjusting nut 3-2. During the screwing process of the adjusting nut 3-2, it fits against the bottom of the sleeve 3-4, thereby increasing the length of the screw 3-1 extending out of the sleeve 3-4. When the adjustment is in place, insert the top end of the permeable concrete test piece 6 into the bearing plate 5, and insert the bottom end of the permeable concrete test piece 6 into the clamping plate 7, so that the permeable concrete test piece 6 is clamped between the bearing plate 5 and the clamping plate 7 and connected as a whole through the external connecting screw 12, which is quickly installed and ensures that the installation is in place.

[0077] Then, screw the adjusting nut 3-2 in the reverse direction. During the screwing process of the adjusting nut 3-2, it fits against the bottom of the sleeve 3-4, thereby reducing the length of the screw 3-1 extending out of the sleeve 3-4. The transparent cylinder 8, the bearing plate 5, the permeable concrete test piece 6 and the clamping plate 7 as a whole descend until the bottom of the permeable concrete test piece 6 extends into the lower liquid tank 2 to meet the detection requirements.

[0078] Then, operate the water pump 9-1 to work, open the upper valve 10 and the first valve 2-2. The water pumped by the water pump 9-1 from the water tank 2 enters the transparent cylinder 8 through the upper delivery pipe 9-2, and permeates into the lower liquid tank 2 through the permeable concrete block 6-4. When there is water in the lower liquid tank 2 entering the water tank 9 through the lower overflow pipe 11 and the first branch overflow pipe 2-1, pay attention to ensuring that the water volume entering the transparent cylinder 8 makes the water level in the transparent cylinder 8 at the overflow port until the flow rate of the upper overflow pipe 8-1 in the transparent cylinder 8 is the same as that of the lower overflow pipe 11. Then, close the first valve 2-2, open the second valve 13, measure the outflow water volume for a set time with the measuring cylinder 15, and then obtain the permeability coefficient of the permeable concrete block 6-4 according to (outflow water volume × thickness of the permeable concrete block) / (upper surface area of the permeable concrete block × water level difference × set time); where the water level difference refers to the difference between the water level in the measuring cylinder 8 and the water level in the lower liquid tank 2.

[0079] After completing the permeability coefficient detection, close each valve, collect the water in the permeability coefficient detection component into the water tank 9, remove the lower liquid tank 2, disassemble the external connection screw 12, the clamping plate 7 and the permeable concrete test piece 6, and remove the side seal to obtain the permeable concrete block 6-4. Then, install the clamping plate 7 on the top surface of the bearing plate 5, connect it through the external connection screw 12, insert the convex-shaped load-bearing block 14 at the bottom of the bearing plate 5 and place it on the bottom plate 1. The lower horizontal ring plate 6-3 of the lower hoop of the permeable concrete block 6-4, insert the permeable concrete block 6-4 into the lower small-diameter through hole 7-2 of the clamping plate 7 until the bottom of the permeable concrete block 6-4 passes through the lower horizontal ring plate 6-3 and contacts the top surface of the convex-shaped load-bearing block 14, and the lower horizontal ring plate 6-3 is located in the lower step groove. Because the wall thickness of the rubber membrane and the receiving cylinder 6-2 is relatively thin, the distance between the lower horizontal ring plate 6-3 of the hoop and the groove wall of the lower step groove is also relatively small after disassembling the rubber membrane and the receiving cylinder 6-2, so that the permeable concrete block 6-4 can also be limited to make the permeable concrete block 6-4 vertically arranged; after that, operate the telescopic end of the hydraulic cylinder 16 to extend. The extension of the telescopic end of the hydraulic cylinder 16 applies pressure to the permeable concrete block 6-4 through the pressing plate 4. The hydraulic cylinder 16 gradually increases the pressure until the pressure detected by the pressure sensor 18 meets the design requirement value and the permeable concrete block 6-4 does not show cracks or breakage, then the compressive strength of the permeable concrete block 6-4 meets the compressive requirement.

[0080] In summary, the utility model has a simple structure and reasonable design, so that the permeability coefficient and compressive strength of the permeable concrete can be detected, the disassembly and assembly are convenient, the side penetration in the permeability detection is avoided, and the permeability coefficient and compressive strength of the permeable concrete are ensured to be qualified.

[0081] The above are only the preferred embodiments of the present utility model, and do not impose any limitations on the present utility model. Any simple modifications, changes, and equivalent structural changes made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for detecting the permeability coefficient and compressive strength of permeable concrete, characterized in that: It includes a bottom base plate (1), a lifting column (3) arranged on the bottom base plate (1), a bearing plate (5) connected to the lifting column (3), a specimen clamping body installed at the lower part of the bearing plate (5), a water permeability coefficient detection component, and a compressive strength detection component arranged on the bottom base plate (1); The specimen clamping body includes a clamping plate (7) connected to the bearing plate (5), and a permeable concrete specimen (6) clamped between the bearing plate (5) and the clamping plate (7) and detachably connected. The permeable concrete specimen (6) includes a permeable concrete block (6-4) and a side seal arranged outside the permeable concrete block (6-4); The water permeability coefficient detection component includes a transparent cylinder (8) with its bottom end inserted into the top of the bearing plate (5), a water supply component connected to the transparent cylinder (8), a lower liquid tank (2) arranged on the bottom base plate (1) and located at the bottom of the clamping plate (7), and a measuring cylinder (15) communicated with the lower liquid tank (2); The compressive strength detection component includes a support frame (17) arranged on the bottom base plate (1), a hydraulic cylinder (16) penetrating through the top of the support frame (17), and a pressing plate (4) arranged at the telescopic end of the hydraulic cylinder (16).

2. The water permeability coefficient and compressive strength detection device for permeable concrete according to claim 1, characterized in that: The lifting column (3) includes a sleeve (3-4) connected to the bottom of the bearing plate (5), a screw rod (3-1) arranged on the bottom base plate (1) and extending into the sleeve (3-4), and an adjusting nut (3-2) sleeved on the screw rod (3-1) and fitting against the bottom of the sleeve (3-4). A locking nut (3-3) is sleeved on the screw rod (3-1).

3. A water-permeable concrete water permeability coefficient and compressive strength detection device according to claim 1, characterized in that: The side seal includes a rubber membrane sleeved outside the permeable concrete block (6-4), a receiving cylinder (6-2) clamped outside the rubber membrane, a lower horizontal ring plate (6-3) clamped outside the bottom end of the receiving cylinder (6-2), and an upper horizontal ring plate (6-1) clamped outside the top end of the receiving cylinder (6-2). The top surface of the upper horizontal ring plate (6-1) is flush with the top surface of the permeable concrete block (6-4), and the bottom surface of the lower horizontal ring plate (6-3) is flush with the bottom surface of the permeable concrete block (6-4). The lower horizontal ring plate (6-3) is inserted into the top surface of the clamping plate (7), and the upper horizontal ring plate (6-1) is inserted into the bottom inside of the bearing plate (5).

4. A water-permeable concrete water permeability coefficient and compressive strength detection device according to claim 3, characterized in that: A lower large-diameter through hole (7-1) and a lower small-diameter through hole (7-2) communicated with the lower large-diameter through hole (7-1) are arranged at the central position of the clamping plate (7). A lower step groove for inserting the lower horizontal ring plate (6-3) is formed at the connection of the lower large-diameter through hole (7-1) and the lower small-diameter through hole (7-2); An upper large-diameter through hole (5-1) and an upper small-diameter through hole (5-2) communicated with the upper large-diameter through hole (5-1) are arranged at the central position of the bearing plate (5). An upper step groove for inserting the upper horizontal ring plate (6-1) is formed at the connection of the upper large-diameter through hole (5-1) and the upper small-diameter through hole (5-2). The bottom end of the transparent cylinder (8) is inserted into the upper small-diameter through hole (5-2), and the bottom end of the transparent cylinder (8) abuts against the top surfaces of the upper horizontal ring plate (6-1) and the receiving cylinder (6-2); The inner diameter of the transparent cylinder (8), the small-diameter through hole (7-2) at the lower part, and the diameter of the permeable concrete block (6-4) are the same and are arranged coaxially.

5. A water-permeable concrete water permeability coefficient and compressive strength detection device according to claim 1, characterized in that: The water supply component includes a water tank (9) arranged on the bottom plate (1), a water pump (9-1) arranged in the water tank (9), and an upper water delivery pipe (9-2) connected to the output end of the water pump (9-1). The upper water delivery pipe (9-2) communicates with the top of the transparent cylinder (8), and an upper valve (10) is arranged on the upper water delivery pipe (9-2); An upper overflow pipe (8-1) is arranged on the side wall of the transparent cylinder (8), a lower overflow pipe (11) is arranged on the lower liquid tank (2), a first branch overflow pipe (2-1) and a second branch overflow pipe (14) are arranged on the lower overflow pipe (11), and a first valve (2-2) is arranged on the first branch overflow pipe (2-1); a second valve (13) is arranged on the second branch overflow pipe (14), and the measuring cylinder (15) is arranged on the bottom plate (1).

6. The water permeability coefficient and compressive strength detection device for permeable concrete according to claim 3, characterized in that: The receiving cylinder (6-2) includes a first semi-cylinder (6-21) and a second semi-cylinder (6-22). A convex block is arranged on the side wall of the first semi-cylinder (6-21), and a groove for mating with the convex block is arranged on the side wall of the second semi-cylinder (6-22). The first semi-cylinder (6-21) and the second semi-cylinder (6-22) are inserted and connected through the convex block and the groove; Both the upper horizontal ring plate (6-1) and the lower horizontal ring plate (6-3) include two semi-circular ring plates (6-31), and the ends of the two semi-circular ring plates (6-31) are connected by screw nuts (6-32).

7. A water-permeable concrete water permeability coefficient and compressive strength testing device according to claim 5, characterized in that: An opening is arranged at the top of the lower liquid tank (2). The bottom of the permeable concrete specimen (6) extends into the lower liquid tank (2), and the lower overflow pipe (11) is higher than the bottom of the permeable concrete block (6-4).

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