CN112378831A - Reduce permeable pavement coefficient of permeability testing arrangement that strikes - Google Patents
Reduce permeable pavement coefficient of permeability testing arrangement that strikes Download PDFInfo
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- CN112378831A CN112378831A CN202011260778.8A CN202011260778A CN112378831A CN 112378831 A CN112378831 A CN 112378831A CN 202011260778 A CN202011260778 A CN 202011260778A CN 112378831 A CN112378831 A CN 112378831A
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- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 230000035699 permeability Effects 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 215
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 16
- 241001330002 Bambuseae Species 0.000 claims description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 16
- 239000011425 bamboo Substances 0.000 claims description 16
- 239000011449 brick Substances 0.000 abstract description 17
- 238000010998 test method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 15
- 239000012466 permeate Substances 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011041 water permeability test Methods 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
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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Abstract
A permeable pavement water permeability coefficient testing device capable of reducing impact. The permeable pavement water permeability coefficient testing device is simple in structure, convenient to machine and capable of improving testing stability and reducing impact. The measuring cylinder and the transparent cylinder are communicated and arranged up and down, the central line of the measuring cylinder and the central line of the transparent cylinder are positioned on the same straight line, the cylinder diameter of the measuring cylinder is smaller than that of the transparent cylinder, the top surface of the sealing ring is provided with an annular groove, and the transparent cylinder is arranged in the annular groove; still include the mechanism of permeating water, the mechanism of permeating water can dismantle the connection in the transparent cylinder. The water permeability coefficient test method is very suitable for the road surface with larger water permeability coefficient, in particular to the permeable road surface of permeable brick and gap permeable, and the test operation is convenient.
Description
The scheme is a divisional application with application date of 2018-01-18 and application number of 2018100482816 and the name of 'a permeable pavement water permeability coefficient testing device and method'.
Technical Field
The invention relates to the field of permeable pavement water permeability coefficient detection, in particular to a permeable pavement water permeability coefficient testing device and a permeable pavement water permeability coefficient testing method.
Background
The permeable pavement is adopted to solve the problem of back-supplementing and releasing between rainwater and underground water, and is one of important ways for sponge urban road construction. After the road is paved by the water permeable bricks, on one hand, the water permeable and air permeable area of the city can be increased, the city climate can be adjusted, the surface temperature can be reduced, and the heat island phenomenon of the city can be favorably alleviated. Meanwhile, rain and snow precipitation can be fully utilized, the relative humidity of the earth surface is increased, increasingly exhausted underground water resources in urban areas are supplemented, and the function of a water reservoir of the permeable roadbed is exerted.
The water permeability coefficient is an important index for evaluating the water permeability of the permeable pavement. The method for testing the water permeability coefficient of the permeable pavement at present mainly comprises three methods: firstly, a core taking method is adopted, a core column with the diameter of 75mm is generally taken for testing, the method is easy to disturb the actually blocked impurities in the core body in the core taking process, the core body has small volume, the core body cannot represent the water permeability of the whole pavement, and the method has high requirement on test water and needs a vacuum device and no water; secondly, the test is carried out according to the water permeability test method of the permeable concrete pavement in appendix B in Standard DB11T 775 and 2010 permeable concrete pavement technical Specification, and the test device is that the upper measuring cylinder and the base pass through
Is connected with the thin tube, the methodThe method is more suitable for the permeable pavement with smaller permeability coefficient, especially for the permeable pavement with larger permeability coefficient, especially the permeable pavement of permeable brick and gap permeable,
the thin tube can not ensure that water on the road surface continuously seeps downwards, and a base with the inner diameter of 150mm can not cover a certain amount of permeable bricks and gaps, namely the test point is not representative and obviously not suitable; thirdly, the test is carried out according to American standard ASTM C1781/1781M-15 permeability test method of block permeable pavement structure system, the water flows out due to impact from the edge of the permeable ring after pouring, the water level is not easy to control, the operation is inconvenient, and the test is not accurate.
Disclosure of Invention
Aiming at the problems, the invention provides the permeable pavement water permeability coefficient testing device which is simple in structure, convenient to process and capable of improving testing stability and reducing impact.
The technical scheme of the invention is as follows: the measuring cylinder and the transparent cylinder are communicated and arranged up and down, the central line of the measuring cylinder and the central line of the transparent cylinder are positioned on the same straight line, the cylinder diameter of the measuring cylinder is smaller than that of the transparent cylinder, the top surface of the sealing ring is provided with an annular groove, and the transparent cylinder is arranged in the annular groove;
still include the mechanism of permeating water, the mechanism of permeating water can dismantle the connection in the transparent cylinder.
The water permeable mechanism comprises a water cylinder and a pair of guide rods, the top and the bottom of the water cylinder are provided with openings, the water cylinder is provided with a pair of guide holes, the guide rods are correspondingly arranged in the guide holes one by one,
the top wall of the transparent cylinder is provided with a positioning groove, the guide rod is positioned in the positioning groove, the central line of the water cylinder and the central line of the transparent cylinder are positioned on the same straight line,
the bottom of the guide rod is sleeved with a spring, and the spring is located below the water barrel.
The water cylinder is provided with a plurality of water permeable holes.
The water permeable mechanism comprises a first water permeable cylinder, the upper part of the first water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the first water permeable cylinder is in a cylindrical shape, a plurality of water permeable holes are formed in the upper part of the first water permeable cylinder, and the central line of the first water permeable cylinder and the central line of the transparent cylinder are located on the same straight line;
the top surface of a section of thick bamboo one of permeating water is equipped with the reference column, the roof of transparent section of thick bamboo is equipped with the constant head tank, the reference column is located the constant head tank.
The water permeable mechanism comprises a second water permeable cylinder, the upper part of the second water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the second water permeable cylinder is in a cylindrical shape, a plurality of water permeable holes are formed in the upper part of the second water permeable cylinder, and the central line of the second water permeable cylinder and the central line of the transparent cylinder are located on the same straight line;
the top edge of the second water permeable cylinder is provided with an annular water permeable plate, the water permeable plate is provided with a plurality of water permeable holes, the outer side of the water permeable plate is provided with a pair of embedded rings, the inner wall of the second transparent cylinder is provided with embedded blocks, and the embedded blocks are arranged in the embedded rings in a matching mode.
The water permeable mechanism comprises a third water permeable cylinder, the upper part of the third water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the third water permeable cylinder is in a cylindrical shape, a plurality of water permeable holes are formed in the upper part of the third water permeable cylinder, and the central line of the third water permeable cylinder and the central line of the transparent cylinder are positioned on the same straight line;
and flexible positioning blocks are arranged on two sides of the top of the third water permeable cylinder, an embedding groove is formed in the inner wall of the transparent cylinder, and the positioning blocks are positioned in the embedding groove.
The height of the measuring cylinder is not more than 200mm, and the outer wall of the measuring cylinder is provided with scale marks from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height of the transparent cylinder is smaller than 20 mm.
The top of the transparent cylinder is communicated with an exhaust pipe.
A testing method of a permeable pavement permeability coefficient testing device comprises the following steps:
1) arranging; firstly, a sealing ring is placed, and at least two cross gaps or infiltration holes reserved in the brick manufacturing and molding process are included in a circle of the sealing ring; then the water permeable mechanism is placed in the transparent cylinder, and the transparent cylinder is placed in the annular groove of the sealing ring;
2) pre-wetting; pouring water into the measuring cylinder, and pouring the water onto the bricks when pouring the water, wherein the height of a water outlet when pouring the water is not more than 250mm of the road surface;
3) testing; the test should be started within 2 minutes after the prewetting is completed, water is poured into the measuring cylinder rapidly, and the water level is lowered to the scale V1When the water level is lowered to the scale V, the stopwatch is started immediately2Recording the test time T until the time comes, and then calculating the water permeability coefficient T;
the calculation formula of the water permeability coefficient T is as follows:
in the formula:
t is the water permeability coefficient of the permeable pavement, and the unit is milliliter per square centimeter per second;
V1the first recorded reading in ml when the water level is lowered;
V2-a second recorded reading in ml when the water level is lowered;
a, the area of the permeable pavement surrounded by the test device after the test device is in contact and sealed with the permeable pavement, and the unit is square centimeter;
t is the time recorded by the water surface falling, and the unit is second;
4) cleaning; after the test work is finished, the road surface is cleaned, and the cleanness degree of the road surface in the test area is visually checked.
During the operation of the invention, the water permeable bricks and gaps covering a certain area are selected as test points, the test points can represent the water permeability of the whole water permeable pavement, the sealing rings are placed on the test points, the transparent cylinder and the measuring cylinder are connected into a whole, the water permeable mechanism is placed in the transparent cylinder, the transparent cylinder is placed in the annular groove, and finally, the measuring cylinder is poured for testing. Because the cylinder diameter of the measuring cylinder is smaller than that of the transparent cylinder, the water permeable mechanism is arranged, so that poured water in the measuring cylinder is dispersed and uniformly poured into the test points; meanwhile, the impact on the sealing ring is avoided, and the sealing performance is improved.
The water permeability coefficient test method is very suitable for the road surface with larger water permeability coefficient, in particular to the permeable road surface of permeable brick and gap permeable, and the test operation is convenient.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is a top view of figure 1,
figure 3 is a schematic structural diagram of a first embodiment of the present invention,
figure 4 is a schematic structural diagram of a second embodiment of the present invention,
figure 5 is a schematic structural diagram of a third embodiment of the present invention,
figure 6 is an enlarged view of a portion of figure 5 at M,
figure 7 is a schematic structural diagram of a fourth embodiment of the present invention,
FIG. 8 is a schematic structural view of a third transparent cylinder;
in the figure, 1 is a measuring cylinder, 2 is a transparent cylinder, 3 is a sealing ring, 30 is an annular groove,
401 is a water cylinder, 4010 is a guide hole, 402 is a guide rod, 403 is a positioning groove, 404 is a spring,
411 is a water permeable cylinder I, 4110 is a water permeable hole, 412 is a positioning column, 413 is a positioning groove,
421 is a water permeable cylinder II, 4210 is a water permeable hole I, 422 is a water permeable plate, 4220 is a water permeable hole II, 423 is an embedded ring, 424 is an embedded block,
431 is a water permeable cylinder, 4310 is a water permeable hole, 432 is a positioning block, and 433 is a caulking groove.
5 is an exhaust pipe, 6 is a gap, and 7 is a brick.
Detailed Description
The invention is shown in figures 1-8, comprising a measuring cylinder 1, a transparent cylinder 2 and a sealing ring 3, wherein the measuring cylinder and the transparent cylinder are communicated and arranged up and down, the central line of the measuring cylinder and the central line of the transparent cylinder are positioned on the same straight line, the cylinder diameter of the measuring cylinder is smaller than that of the transparent cylinder, the top surface of the sealing ring 3 is provided with an annular groove 30, and the transparent cylinder is arranged in the annular groove;
still include the mechanism of permeating water, the mechanism of permeating water can dismantle the connection in the transparent cylinder.
During the operation of the invention, the water permeable bricks and gaps covering a certain area are selected as test points, the test points can represent the water permeability of the whole water permeable pavement, the sealing rings are placed on the test points, the transparent cylinder and the measuring cylinder are connected into a whole, the water permeable mechanism is placed in the transparent cylinder, the transparent cylinder is placed in the annular groove, and finally, the measuring cylinder is poured for testing. Because the cylinder diameter of the measuring cylinder is smaller than that of the transparent cylinder, the water permeable mechanism is arranged, so that poured water in the measuring cylinder is dispersed and uniformly poured into the test points; meanwhile, the impact on the sealing ring is avoided, and the sealing performance is improved.
The measuring cylinder and the transparent cylinder only need to simply cut and bond the glass or acrylic circular tube with the existing size, and the processing is very convenient.
As shown in fig. 3, the first embodiment of the present invention is: the water permeable mechanism comprises a water cylinder 401 and a pair of guide rods 402, the top and the bottom of the water cylinder are opened, the water cylinder is provided with a pair of guide holes 4010, the guide rods are correspondingly arranged in the guide holes one by one,
the top wall of the transparent cylinder is provided with a positioning groove 403, the guide rod is positioned in the positioning groove, the central line of the water cylinder and the central line of the transparent cylinder are positioned on the same straight line,
the bottom end of the guide rod is sleeved with a spring 404, and the spring is positioned below the water barrel.
The water permeable mechanism comprises a water barrel and a pair of guide rods, the pair of guide rods are positioned in the positioning grooves and positioned in the guide holes of the water barrel to play a role in guiding the water barrel, and meanwhile, a spring is arranged below the water barrel; thus, the pouring water in the measuring cylinder can be dispersed from the upper part and the lower part of the water cylinder, and the impact on the sealing ring is reduced.
The water cylinder is provided with a plurality of water permeable holes. Furthermore, the water permeability of the water drum is improved, and the water drum is convenient to uniformly distribute and pour into the test points.
As shown in fig. 4, a second embodiment of the present invention is: the water permeable mechanism comprises a first water permeable cylinder 411, the upper part of the first water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the first water permeable cylinder is in a cylindrical shape, a plurality of water permeable holes 4110 are formed in the upper part of the first water permeable cylinder (namely, the water permeable holes are formed in the ring surface of the upper part), and the central line of the first water permeable cylinder and the central line of the transparent cylinder are positioned on the same straight;
the top surface of the permeable cylinder I is provided with a positioning column 412, the top wall of the transparent cylinder is provided with a positioning groove 413, and the positioning column is located in the positioning groove.
In operation, establish in the constant head tank through the reference column, play and advance line location to a section of thick bamboo of permeating water for on the one hand, get into the test point in a section of thick bamboo of permeating water, on the other hand, because a section of thick bamboo upper portion of permeating water is the frustum form, spills over from a section of thick bamboo upper portion of permeating water, disperses to permeate water, reduces the impact to the sealing ring, improves the reliability of permeating water.
A plurality of water permeable holes are formed in the first water permeable cylinder, so that the dispersibility is improved. The inner diameter (namely the inner diameter of the upper part and the inner diameter of the lower part) of the first water permeable cylinder is larger than the cylinder diameter of the measuring cylinder.
As shown in fig. 5 to 6, the third embodiment of the present invention is: the water permeable mechanism comprises a second water permeable cylinder 421, the upper part of the second water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the second water permeable cylinder is in a cylindrical shape, the upper part of the second water permeable cylinder is provided with a plurality of water permeable holes (namely the ring surface is provided with a first water permeable hole 4210), and the central line of the second water permeable cylinder and the central line of the transparent cylinder are positioned on the same straight line;
the top edge of a permeable section of thick bamboo two is equipped with annular permeable plate 422, be equipped with a plurality of permeable holes (two 4220 in permeable hole promptly) on the permeable plate, the outside of permeable plate is equipped with a pair of abaculus 423, the inner wall of transparent section of thick bamboo two is equipped with abaculus 424, the abaculus adaptation ground is established in the abaculus.
In the work, through placing the section of thick bamboo of permeating water two and carrying out the rotation action in transparent cylinder for the abaculus is connected in the abaculus ring, plays fixed transparent cylinder, when pouring water, plays "pushing down" transparent cylinder, makes sealed reliable between transparent cylinder and the sealing ring.
When pouring water, on the one hand, from getting into the test point in two sections of cylinders that permeate water, on the other hand, owing to two upper portions of two sections of cylinders that permeate water are the frustum form, the top of two sections of cylinders that permeate water is equipped with the porous disk, and on two upper portions of two sections of cylinders that permeate water spilled over to the porous disk, the last hole of permeating water that is equipped with of porous disk played the dispersion and permeated water, reduced the impact to the sealing ring, improved the reliability of permeating water.
The inner diameters (namely the inner diameters of the upper part and the lower part) of the second water permeable cylinder are larger than the cylinder diameter of the measuring cylinder.
As shown in fig. 7 to 8, the fourth embodiment of the present invention is: the water permeable mechanism comprises a water permeable barrel III 431, the upper part of the water permeable barrel III is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable barrel III is in a cylindrical shape, the upper part of the water permeable barrel III is provided with a plurality of water permeable holes 4310 (namely arranged on the ring surface of the upper part), and the central line of the water permeable barrel III and the central line of the transparent barrel are positioned on the same straight line;
and flexible positioning blocks 432 are arranged on two sides of the top of the permeable tube III, an embedding groove 433 is arranged on the inner wall of the transparent tube, and the positioning blocks are positioned in the embedding grooves.
In the work, through placing the section of thick bamboo of permeating water three in the transparent cylinder, the flexible locating piece is placed in the caulking groove, plays fixed transparent cylinder, when pouring water, plays "pushing down" transparent cylinder for it is reliable to seal between transparent cylinder and the sealing ring.
When pouring water, on the one hand, from getting into the test point in the section of thick bamboo three of permeating water, on the other hand, owing to the three upper portions of a section of thick bamboo of permeating water are the frustum form, the pouring water spills over from the three upper portions of a section of thick bamboo of permeating water, owing to the upper portion of a section of thick bamboo three of permeating water is equipped with the hole of permeating water, plays the dispersion and permeates water, reduces the impact to the sealing ring.
The inner diameters (namely the inner diameters of the upper part and the lower part) of the third water permeable cylinder are larger than the cylinder diameter of the measuring cylinder.
The height of the measuring cylinder is not more than 200mm, and the outer wall of the measuring cylinder is provided with scale marks from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height of the transparent cylinder is smaller than 20 mm.
The height of the measuring cylinder is used for limiting the height of pouring water, so that the disturbance to the pavement gap and the opening is reduced; the transparent cylinder limits the inner diameter and the height, and can ensure that the surface of the test point is continuously infiltrated with water.
The top of the transparent cylinder is communicated with an exhaust pipe 5. When the water is convenient to pour, the air in the transparent cylinder is exhausted.
A testing method of a permeable pavement permeability coefficient testing device comprises the following steps:
1) arranging; firstly, a sealing ring is placed, and at least two cross gaps 6 or infiltration holes reserved during the manufacturing and molding of bricks 7 are included in a circle of the sealing ring; then the water permeable mechanism is placed in the transparent cylinder, and the transparent cylinder is placed in the annular groove of the sealing ring;
2) pre-wetting; pouring water into the measuring cylinder, and pouring the water onto the bricks when pouring the water, wherein the height of a water outlet when pouring the water is not more than 250mm of the road surface;
3) testing; the test should be started within 2 minutes after the prewetting is completed, water is poured into the measuring cylinder rapidly, and the water level is lowered to the scale V1When the water level is lowered to the scale V, the stopwatch is started immediately2Recording the test time T until the time comes, and then calculating the water permeability coefficient T;
the calculation formula of the water permeability coefficient T is as follows:
in the formula:
T-Water permeability coefficient of permeable pavement, unit is milliliter per square centimeter per second (ml/cm)2·s)；
V1The first recorded reading in milliliters (ml) when the water level drops;
V2-a second recorded reading in milliliters (ml) as the water level descends;
a-area of the permeable pavement surrounded by the test device after contacting and sealing with the permeable pavement, the unit is square centimeter (cm)2)；
t-the time recorded for the water surface to descend in seconds(s);
4) cleaning; after the test work is finished, the road surface is cleaned, and the cleanness degree of the road surface in the test area is visually checked.
When the measuring cylinder is used specifically, the measuring cylinder comprises a transparent cylinder and a transparent measuring cylinder, and the measuring cylinder and the transparent cylinder are connected into an upper whole body and a lower whole body. The transparent cylinder can be cylindrical, with an inner diameter of 290mm and a height of 15 mm. The transparent measuring cylinder with the scale marks has the height of 200mm and the inner diameter of 80 mm.
During testing, the method comprises the following four steps of arranging a testing device, prewetting, testing and cleaning:
the test device arranging method comprises the following steps:
before installing the test device on the surface of the pavement, finding the 'points' of which the water gaps and the open areas can represent the whole test pavement most; namely: the water permeable gaps and the openings on the surface of the road in the test area in the test device are representative. The pavement surface in the test point area is cleaned before placement without the presence of dirt, debris and any other material adhering to the pavement surface.
On the brick joint of the contact position of the testing device and the road surface, the joint filling material with the depth not more than 10mm can be removed downwards, and a sealing ring is arranged, namely the excavated brick joint is tightly plugged by using a sealing material. The bottom edge of the test device was sealed to the road surface with a sealing material. It is ensured that the sealing material does not exceed 10mm wide at the bottom inner edge of the test device and acts as a seal. The periphery of the test unit may be sealed with additional sealing material to ensure a watertight effect.
The ring of the sealing ring should include at least two or more cross gaps or infiltration open pore structures reserved during the manufacture and molding of bricks. The interval between the measurement points should be not less than 1 m.
The prewetting method comprises the following steps: pouring water into the testing device, wherein the water is flushed on the brick blocks as much as possible without directly flushing the brick seams or the openings. The height of the water outlet when pouring water is not more than 250mm of the road surface, so that the disturbance to the road surface gap and the opening is reduced.
The test method comprises the following steps: the test should start within 2 minutes after the pre-wetting is completed. Pouring water into the testing device quickly until the water level drops to the scale V1When the water level is lowered to the scale V, the stopwatch is started immediately2And recording the test time T till time, and then calculating the water permeability coefficient T according to a correlation formula.
If the test is repeated on the same site test point, the pre-wetting process is no longer required if it is performed within 5 minutes from the completion of the last test. If two tests are performed on a day at the same test site location, the permeation rate on that day is averaged over the two test values. More than two tests are not allowed at the same test site location during a day.
The cleaning method comprises the following steps: after the test is completed, the sealing material is cleaned from the gaps (openings) and the road surface, the removed gap filling material in the gaps (and openings) is refilled, and the cleanness of the road surface in the test area is visually checked.
Claims (3)
1. The permeable pavement water permeability coefficient testing device capable of reducing impact is characterized by comprising a measuring cylinder, a transparent cylinder and a sealing ring, wherein the measuring cylinder is communicated with the transparent cylinder and is arranged up and down;
the water permeable mechanism is detachably connected in the transparent cylinder;
the water permeable mechanism comprises a first water permeable cylinder, the upper part of the first water permeable cylinder is in a frustum shape with a large upper part and a small lower part, the lower part of the first water permeable cylinder is in a cylindrical shape, a plurality of water permeable holes are formed in the upper part of the first water permeable cylinder, and the central line of the first water permeable cylinder and the central line of the transparent cylinder are located on the same straight line;
the top surface of a section of thick bamboo one of permeating water is equipped with the reference column, the roof of transparent section of thick bamboo is equipped with the constant head tank, the reference column is located the constant head tank.
2. The permeable pavement water permeability coefficient test device capable of reducing impact according to claim 1, characterized in that the height of the measuring cylinder is not more than 200mm, and the outer wall of the measuring cylinder is provided with scale marks from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height of the transparent cylinder is smaller than 20 mm.
3. The permeable pavement water permeability coefficient test device for reducing impact according to claim 1, characterized in that the top of the transparent cylinder is communicated with an exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260778.8A CN112378831B (en) | 2018-01-18 | 2018-01-18 | Reduce permeable pavement water permeability coefficient testing arrangement of impact |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048281.6A CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
| CN202011260778.8A CN112378831B (en) | 2018-01-18 | 2018-01-18 | Reduce permeable pavement water permeability coefficient testing arrangement of impact |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810048281.6A Division CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112378831A true CN112378831A (en) | 2021-02-19 |
| CN112378831B CN112378831B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011260792.8A Active CN112326531B (en) | 2018-01-18 | 2018-01-18 | Improve leakproofness's permeable pavement coefficient of water permeability testing arrangement |
| CN202011260778.8A Active CN112378831B (en) | 2018-01-18 | 2018-01-18 | Reduce permeable pavement water permeability coefficient testing arrangement of impact |
| CN202011263564.6A Active CN112285000B (en) | 2018-01-18 | 2018-01-18 | Be suitable for great coefficient testing arrangement that permeates water of permeable pavement |
| CN201810048281.6A Active CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011260792.8A Active CN112326531B (en) | 2018-01-18 | 2018-01-18 | Improve leakproofness's permeable pavement coefficient of water permeability testing arrangement |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011263564.6A Active CN112285000B (en) | 2018-01-18 | 2018-01-18 | Be suitable for great coefficient testing arrangement that permeates water of permeable pavement |
| CN201810048281.6A Active CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
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| CN112378831B (en) | 2024-01-30 |
| CN112285000B (en) | 2024-01-30 |
| CN108458958B (en) | 2020-12-01 |
| CN112326531A (en) | 2021-02-05 |
| CN112285000A (en) | 2021-01-29 |
| CN108458958A (en) | 2018-08-28 |
| CN112326531B (en) | 2024-01-30 |
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