CN112378831B - Reduce permeable pavement water permeability coefficient testing arrangement of impact - Google Patents
Reduce permeable pavement water permeability coefficient testing arrangement of impact Download PDFInfo
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- CN112378831B CN112378831B CN202011260778.8A CN202011260778A CN112378831B CN 112378831 B CN112378831 B CN 112378831B CN 202011260778 A CN202011260778 A CN 202011260778A CN 112378831 B CN112378831 B CN 112378831B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 241
- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 230000035699 permeability Effects 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 239000011449 brick Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 13
- 238000010998 test method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 13
- 235000017491 Bambusa tulda Nutrition 0.000 description 13
- 241001330002 Bambuseae Species 0.000 description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 13
- 239000011425 bamboo Substances 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 7
- 239000003566 sealing material Substances 0.000 description 6
- 238000009736 wetting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material 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
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 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
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000005239 tubule Anatomy 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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- Dispersion Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Fluid Mechanics (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
A device for testing the water permeability coefficient of a water permeable pavement for reducing impact. The device for testing the water permeability coefficient of the water permeable pavement has the advantages of being simple in structure, convenient to process and capable of improving testing stability and reducing impact. The measuring cylinder is communicated with the transparent cylinder and is 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, an annular groove is formed in the top surface of the sealing ring, and the transparent cylinder is arranged in the annular groove; the water permeable mechanism is detachably connected in the transparent cylinder. The water permeability coefficient test method is very suitable for the pavement with a larger water permeability coefficient, in particular to the water permeable pavement with water permeable bricks and gaps, and the test operation is convenient.
Description
The application is a divisional application with the application date 2018-01-18 and the application number 2018100482816 and the invention creative name of a device and a method for testing the water permeability coefficient of a water permeable pavement.
Technical Field
The invention relates to the field of water permeability coefficient detection of water permeable pavement, in particular to a water permeability coefficient testing device and a water permeability coefficient testing method of a water permeable pavement.
Background
The adoption of the permeable pavement for solving the repair and release between rainwater and underground water is one of important ways of construction of sponge urban roads. After the road is paved by the water permeable bricks, on one hand, the water permeable and air permeable areas of the city can be increased, the city climate can be regulated, the surface temperature can be reduced, and the urban heat island phenomenon can be relieved. Meanwhile, rain, snow and rainfall can be fully utilized, the relative humidity of the ground surface is increased, increasingly exhausted groundwater resources in urban areas are supplemented, and the water-permeable roadbed 'reservoir' function is played.
The water permeability coefficient is an important index for evaluating the water permeability of the water permeable pavement. The current method for testing the water permeability coefficient of the water permeable pavement mainly comprises three methods: firstly, a core column with the diameter of 75mm is generally taken for testing, in the core taking process of the method, the practically blocked impurities in the core body are easy to disturb, the volume of the core body is small, the core body cannot represent the water permeability of the whole pavement, and the method has high requirement on test water and needs to adopt a vacuum device and airless water; secondly, testing according to the water permeability test method of the annex B permeable concrete pavement in the technical specification of permeable concrete pavement of the standard DB11T 775-2010, wherein the test device is that an upper measuring cylinder passes through a baseThe method is more suitable for the water permeable pavement with smaller water permeability coefficient, and is especially suitable for the water permeable pavement with larger water permeability coefficient, especially the water permeable pavement with' water permeable bricks and gaps>The tubule of the test point is far from guaranteeing that the pavement is continuously infiltrated with water, the base with the inner diameter of 150mm cannot cover a certain number of water permeable bricks and gaps, namely, the test point is not representative, and obviously is also unsuitable; thirdly, the water level is not well controlled, the operation is inconvenient and the test is inaccurate because the water is impacted from the edge of the permeable ring after being poured according to the permeability test method of the block permeable pavement structural system of the American standard ASTM C1781/1781M-15.
Disclosure of Invention
Aiming at the problems, the invention provides the device for testing the water permeability coefficient of the water permeable pavement, which has the advantages of simple structure, convenience in processing and improvement of test stability and reduces the impact.
The technical scheme of the invention is as follows: the measuring cylinder is communicated with the transparent cylinder and is 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, an annular groove is formed in the top surface of the sealing ring, and the transparent cylinder is arranged in the annular groove;
the water permeable mechanism is detachably connected in the transparent cylinder.
The water permeable mechanism comprises a water drum and a pair of guide rods, the top and bottom of the water drum are provided with openings, the water drum is provided with a pair of guide holes, the guide rods are arranged in the guide holes in a one-to-one correspondence manner,
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 guide arm cover is equipped with the spring, the spring is located the below of water drum.
The water drum is provided with a plurality of water permeable holes.
The water permeable mechanism comprises a water permeable cylinder I, wherein the upper part of the water permeable cylinder I is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable cylinder I is in a cylinder shape, a plurality of water permeable holes are formed in the upper part of the water permeable cylinder I, and the central line of the water permeable cylinder I and the central line of the transparent cylinder I are positioned on the same straight line;
the top surface of a first water permeable cylinder is provided with a positioning column, the top wall of the transparent cylinder is provided with a positioning groove, and the positioning column is positioned in the positioning groove.
The water permeable mechanism comprises a water permeable cylinder II, the upper part of the water permeable cylinder II is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable cylinder II is in a cylinder shape, a plurality of water permeable holes are formed in the upper part of the water permeable cylinder II, and the center line of the water permeable cylinder II and the center line of the transparent cylinder are positioned on the same straight line;
the top edge of a second permeable cylinder is provided with an annular permeable plate, a plurality of permeable holes are formed in the permeable plate, a pair of embedded rings is arranged on the outer side of the permeable plate, an embedded block is arranged on the inner wall of the second transparent cylinder, and the embedded block is adaptively arranged in the embedded rings.
The water permeable mechanism comprises a water permeable barrel III, wherein 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 cylinder shape, a plurality of water permeable holes are formed in the upper part of the water permeable barrel III, 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;
the flexible positioning blocks are arranged on two sides of the top of the water permeable cylinder III, the caulking groove is formed in the inner wall of the transparent cylinder, and the positioning blocks are located in the caulking groove.
The height of the measuring cylinder is not more than 200mm, and graduation lines are arranged on the outer wall of the measuring cylinder from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height is smaller than 20mm.
And the top of the transparent cylinder is communicated with an exhaust pipe.
A test method of a permeable pavement permeability coefficient test device comprises the following steps:
1) Placing; firstly, placing a sealing ring, wherein the circle of the sealing ring comprises at least more than two cross gaps or infiltration holes reserved during brick manufacturing and forming; 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) Prewetting; pouring water into the measuring cylinder, wherein the water should be poured onto the brick, and the height of the water outlet is not more than 250mm above the road surface;
3) Testing; the test should be started within 2 minutes after the completion of the pre-wetting, the water is rapidly poured into the measuring cylinder, and the water level is lowered to the scale V 1 When the water surface is lowered to the scale V, the stopwatch is started immediately 2 Recording test time T until the test time T, and then calculating a water permeability coefficient T;
the water permeability coefficient T is calculated as follows:
wherein:
t is the water permeability coefficient of the water permeable pavement, and the unit is milliliter per square centimeter per second;
V 1 -the first recorded reading in ml when the water surface is lowered;
V 2 -the second recorded reading in ml when the water surface is lowered;
a, the area of the permeable pavement surrounded by the test device after being contacted and sealed with the permeable pavement is square centimeter;
t-time recorded by water surface descent in seconds;
4) Cleaning; after the test work is completed, the road surface is cleaned up, and the cleaning degree of the road surface in the test area is visually checked.
In operation, 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 ring is 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, water is poured into the measuring cylinder for testing. Because the diameter of the measuring cylinder is smaller than that of the transparent cylinder, a water permeable mechanism is arranged to disperse the water poured into the measuring cylinder and uniformly pour the water into the test points; meanwhile, impact on the sealing ring is avoided, and the sealing performance is improved.
The water permeability coefficient test method is very suitable for the pavement with a larger water permeability coefficient, in particular to the water permeable pavement with water permeable bricks and gaps, 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 view of the structure 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 view 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 diagram of a fourth embodiment of the present invention,
FIG. 8 is a schematic view of the structure 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 drum, 4010 is a guide hole, 402 is a guide rod, 403 is a positioning groove, 404 is a spring,
411 is a water permeable tube I, 4110 is a water permeable hole, 412 is a positioning column, 413 is a positioning groove,
421 is a water permeable cylinder two, 4210 is a water permeable hole one, 422 is a water permeable plate, 4220 is a water permeable hole two, 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, 433 is a caulking groove.
5 is an exhaust pipe, 6 is a slit, 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 is communicated with the transparent cylinder and is 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;
the water permeable mechanism is detachably connected in the transparent cylinder.
In operation, 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 ring is 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, water is poured into the measuring cylinder for testing. Because the diameter of the measuring cylinder is smaller than that of the transparent cylinder, a water permeable mechanism is arranged to disperse the water poured into the measuring cylinder and uniformly pour the water into the test points; meanwhile, impact on the sealing ring is avoided, and the sealing performance is improved.
The measuring cylinder and the transparent cylinder can be manufactured by simply cutting and bonding glass or acrylic round tubes with the existing size, and the processing is very convenient.
As shown in fig. 3, a first embodiment of the present invention is: the water permeable mechanism comprises a water drum 401 and a pair of guide rods 402, the top and bottom of the water drum are provided with openings, the water drum is provided with a pair of guide holes 4010, the guide rods are arranged in the guide holes in a one-to-one correspondence manner,
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 of guide arm is overlapped and is equipped with spring 404, the spring is located the below of water drum.
The water permeable mechanism comprises a water drum and a pair of guide rods, the guide rods are positioned in the positioning grooves, the guide rods are positioned in guide holes of the water drum, the guide effect on the water drum is achieved, and meanwhile, a spring is arranged below the water drum; thus, the water poured into 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 drum is provided with a plurality of water permeable holes. Further, the water permeability of the water drum is improved, and the water drum is convenient to uniformly pour into test points.
As shown in fig. 4, the second embodiment of the present invention is: the water permeable mechanism comprises a water permeable cylinder 411, wherein the upper part of the water permeable cylinder 411 is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable cylinder is in a cylinder shape, the upper part of the water permeable cylinder is provided with a plurality of water permeable holes 4110 (namely, the water permeable holes are arranged on the ring surface of the upper part), and the central line of the water permeable cylinder and the central line of the transparent cylinder are positioned on the same straight line;
the top surface of the first water permeable cylinder 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 positioned in the positioning groove.
In operation, through setting up the reference column in the constant head tank, play and fix a position a section of thick bamboo that permeates water for pour water on the one hand, get into the test point in a section of thick bamboo that permeates water from a section of thick bamboo, on the other hand, because a section of thick bamboo upper portion that permeates water is the frustum form, overflow from a section of thick bamboo upper portion that permeates water, disperse and permeate water, reduce the impact to the sealing ring, improve the reliability of permeating water.
The first water permeable cylinder is provided with a plurality of water permeable holes, so that the dispersibility is improved. The inner diameter of the first water permeable cylinder (namely the upper inner diameter and the lower inner diameter) is larger than the cylinder diameter of the measuring cylinder.
As shown in fig. 5 to 6, a 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 cylinder shape, a plurality of water permeable holes (namely a first water permeable hole 4210 is arranged on an annular surface) 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 positioned on the same straight line;
the top edge of the second permeable cylinder is provided with an annular permeable plate 422, a plurality of permeable holes (namely, the second permeable holes 4220) are formed in the permeable plate, a pair of embedded rings 423 are arranged on the outer side of the permeable plate, an embedded block 424 is arranged on the inner wall of the second transparent cylinder, and the embedded block is adaptively arranged in the embedded rings.
During operation, through placing the second transparent cylinder in the transparent cylinder and carrying out rotary motion for the abaculus is connected in the thimble, plays fixed transparent cylinder, and 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, get into the test point from the section of thick bamboo that permeates water in the second, on the other hand, because section of thick bamboo upper portion that permeates water is the frustum form, the top of section of thick bamboo that permeates water is equipped with the water permeable plate, and the water pouring overflows from section of thick bamboo upper portion that permeates water to on the water permeable plate, is equipped with the hole of permeating water on the water permeable plate, plays the dispersion and permeates water, reduces the impact to the sealing ring, improves the reliability of permeating water.
The inner diameter (namely the upper inner diameter and the lower inner diameter) of the second water permeable cylinder is larger than the cylinder diameter of the measuring cylinder.
As shown in fig. 7 to 8, a fourth embodiment of the present invention is: the water permeable mechanism comprises a water permeable cylinder III 431, wherein the upper part of the water permeable cylinder III is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable cylinder III is in a cylinder shape, the upper part of the water permeable cylinder III is provided with a plurality of water permeable holes 4310 (namely, the water permeable holes are arranged on the ring surface of the upper part), and the central line of the water permeable cylinder III and the central line of the transparent cylinder are positioned on the same straight line;
flexible positioning blocks 432 are arranged on two sides of the top of the third water permeable cylinder, a caulking groove 433 is formed in the inner wall of the transparent cylinder, and the positioning blocks are located in the caulking groove.
In operation, through placing the transparent cylinder III in the transparent cylinder, the flexible locating piece is placed in the caulking groove, plays fixed transparent cylinder, when pouring water, plays "push down" transparent cylinder for seal between transparent cylinder and the sealing ring reliably.
When pouring water, on the one hand, get into the test point from the section of thick bamboo that permeates water in three, on the other hand, because the section of thick bamboo upper portion that permeates water is the frustum form, the section of thick bamboo upper portion that permeates water overflows from permeating water, because the upper portion of the section of thick bamboo that permeates water is equipped with the hole of permeating water, plays the dispersion and permeates water, reduces the impact to the sealing ring, improves the reliability of permeating water.
The inner diameter of the water permeable cylinder III (namely the upper inner diameter and the lower inner diameter) is larger than the cylinder diameter of the measuring cylinder.
The height of the measuring cylinder is not more than 200mm, and graduation lines are arranged on the outer wall of the measuring cylinder from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height is smaller than 20mm.
The height of the measuring cylinder is used for limiting the height when pouring water, so as to reduce disturbance on the gap and the open hole of the road surface; 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 test method of a permeable pavement permeability coefficient test device comprises the following steps:
1) Placing; firstly, a sealing ring is placed, and at least two cross gaps 6 or lower seepage holes reserved when bricks 7 are manufactured and molded are arranged in the 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) Prewetting; pouring water into the measuring cylinder, wherein the water should be poured onto the brick, and the height of the water outlet is not more than 250mm above the road surface;
3) Testing; the test should be started within 2 minutes after the completion of the pre-wetting, the water is rapidly poured into the measuring cylinder, and the water level is lowered to the scale V 1 When the water surface is lowered to the scale V, the stopwatch is started immediately 2 Recording test time T until the test time T, and then calculating a water permeability coefficient T;
the water permeability coefficient T is calculated as follows:
wherein:
t-the permeability coefficient of permeable pavement in milliliters per square centimeter per second (ml/cm) 2 ·s)；
V 1 -the first recorded reading in milliliters (ml) when the water surface is lowered;
V 2 -the second recorded reading in milliliters (ml) when the water surface is lowered;
a-the area of the permeable pavement surrounded by the test device after being contacted and sealed with the permeable pavement is expressed as square centimeter (cm) 2 )；
t—time recorded by the water surface descent in seconds(s);
4) Cleaning; after the test work is completed, the road surface is cleaned up, and the cleaning degree of the road surface in the test area is visually checked.
When the measuring cylinder is specifically applied, the measuring cylinder comprises a transparent cylinder and a transparent measuring cylinder, and the measuring cylinder is connected with the transparent cylinder to form an upper-lower whole body. The transparent cylinder may be cylindrical with an inner diameter of 290mm and a height of 15mm. The transparent measuring cylinder with the scale marks has the height of 200mm and the inner diameter of 80mm.
During testing, the method comprises four steps of arranging a testing device, prewetting, testing and cleaning:
the test device arranging method comprises the following steps:
before the test device is installed on the surface of the pavement, the water-permeable gap and the open area are found to be the most representative of the 'point' of the whole test pavement; namely: the water permeable slits and openings on the surface of the test area in the test device are representative. The pavement surface in the area of the test point is cleaned before being placed, and no garbage, fragments and any other materials adhered to the pavement surface exist.
And (3) on the brick joints at the contact position of the testing device and the road surface, removing the caulking material with the depth of not more than 10mm downwards, and placing a sealing ring, namely, plugging the dug brick joints by using the sealing material. Sealing the bottom edge of the test device with the road surface by using a sealing material. It is ensured that the sealing material is not 10mm wide beyond the bottom inner edge of the test device and acts as a seal. Around the periphery of the test device, additional sealing material may be used to seal to ensure a watertight effect.
The ring of the sealing ring should include at least two or more cross slits or a infiltration open pore structure reserved during the manufacturing and forming of the brick. The interval between measurement points should be not less than 1m.
The prewetting method comprises the following steps: pouring water into the testing device, and pouring water should be flushed onto bricks as much as possible instead of directly flushing the brick joints or openings. The height of the water outlet does not exceed 250mm of the road surface at most when pouring water, so that the disturbance to the gap and the open hole of the road surface is reduced.
The testing method comprises the following steps: the test should begin within 2 minutes after the pre-wetting is completed. Pouring water into the test device quickly until the water surface falls to the scale V 1 When the water surface is lowered to the scale V, the stopwatch is started immediately 2 Until that time, the test time T is recorded, and then the water permeability coefficient T is calculated according to the correlation formula.
If the test is repeated on the same site test point, the pre-wetting process is not required if it is performed within 5 minutes from the completion of the last test. If two tests are performed on the same test site on a day, the permeation rate on that day is averaged over the two test values. More than two tests at the same test point location are not permitted during the course of a day.
The cleaning method comprises the following steps: after the test, the sealing material is cleaned from the gap (opening) and road surface, and the removed sealing material in the gap (and opening) is refilled, and the road surface cleaning degree of the test area is visually checked.
Claims (3)
1. The device for testing the water permeability coefficient of the water permeable pavement for 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 central line of the measuring cylinder and the central line of the transparent cylinder are positioned on the same straight line, the 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;
the water permeable mechanism is detachably connected in the transparent cylinder;
the water permeable mechanism comprises a water permeable cylinder I, wherein the upper part of the water permeable cylinder I is in a frustum shape with a large upper part and a small lower part, the lower part of the water permeable cylinder I is in a cylinder shape, a plurality of water permeable holes are formed in the upper part of the water permeable cylinder I, and the central line of the water permeable cylinder I and the central line of the transparent cylinder I are positioned on the same straight line;
the top surface of the first water permeable cylinder is provided with a positioning column, the top wall of the transparent cylinder is provided with a positioning groove, and the positioning column is positioned in the positioning groove;
the water pouring device has the advantages that water pouring overflows from the upper part of the water permeable cylinder I, water is dispersed and permeated, impact on the sealing ring is reduced, a plurality of water permeable holes are formed in the water permeable cylinder I, and dispersibility is improved.
2. The device for testing the water permeability coefficient of the water permeable pavement for reducing the impact according to claim 1, wherein the height of the measuring cylinder is not more than 200mm, and graduation marks are arranged on the outer wall of the measuring cylinder from top to bottom;
the inner diameter of the transparent cylinder is larger than 250mm, and the height is smaller than 20mm.
3. The device for testing the water permeability coefficient of the water permeable pavement for reducing impact according to claim 1, wherein 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 |
|---|---|---|---|
| CN202011260778.8A CN112378831B (en) | 2018-01-18 | 2018-01-18 | Reduce permeable pavement water permeability coefficient testing arrangement of impact |
| CN201810048281.6A CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
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 CN112378831A (en) | 2021-02-19 |
| CN112378831B true CN112378831B (en) | 2024-01-30 |
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Family Applications (4)
| 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 |
| CN201810048281.6A Active CN108458958B (en) | 2018-01-18 | 2018-01-18 | Permeable pavement water permeability coefficient testing device and method |
| 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 |
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| Publication number | Publication date |
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| CN112326531A (en) | 2021-02-05 |
| CN108458958B (en) | 2020-12-01 |
| CN108458958A (en) | 2018-08-28 |
| CN112326531B (en) | 2024-01-30 |
| CN112285000B (en) | 2024-01-30 |
| CN112285000A (en) | 2021-01-29 |
| CN112378831A (en) | 2021-02-19 |
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