KR101131767B1 - Apparatus and method for testing cloging phenomenon of permeable pavement - Google Patents

Abstract

PURPOSE: Device and method of testing the continuity of permeable performance of a permeable packing member are provided to supply a change of a permeable coefficient depending on time and environment since the permeable coefficient of a permeable packing member can be measured. CONSTITUTION: A device for testing the continuity of permeable performance of a permeable packing member(600) comprises a table(200), a body(100), and a vibration generator. The table can hold a unit(500) specified in KSF 4419 and KSF 2494. The body supports the table with a spring(300). The vibration generator is arranged on the bottom of the table. The vibration generator makes inclusion or water diluted with the inclusion permeate an air gap in the permeable packing member. The inclusion is placed on the surface of the permeable packing member in the unit by applying uniform vibration to the table.

Description

Apparatus and method for testing cloging phenomenon of permeable pavement}

The present invention relates to an apparatus and a method for testing the permeability performance persistence of the permeable packaging material, more specifically, the phenomenon that the air gap of the permeable packaging material is blocked by dust, contaminants and foreign substances (hereinafter referred to as contaminants) generated on the actual road. In order to predict the present invention, a permeability performance persistence verification test apparatus and method for permeable packaging material that can measure how the permeability of the packaging material decreases over time through a simple laboratory test apparatus.

Korean Industrial Standards KSF 4419 (concrete interlocking blocks for sidewalks) and KSF 2494 (indoor permeability testing methods for drainage asphalt mixtures) specify permeability testing instruments, methods and calculations. The permeability test specified in KSF 4419 (concrete interlocking blocks for sidewalks) is as follows.

(1) test apparatus

① Permeability Test Device (Die, Water Tank), ② Mess Cylinder

③ Stopwatch, ④ Vernier Caliper

(2) Test method

① Measure the thickness and cross section of the block with vernier calipers.

② Fix the block 20 in the formwork 10 shown in FIG. At this time, the water is prevented with a paraffin or sealing material 15 to prevent water from falling out of the block 20.

③ Fill the overflow tank 20 of the permeability test apparatus (see FIG. 2) equipped with the formwork 10 of FIG. 1, catch the block in the formwork water side, and then the upper portion of the formwork 10. Water level is made constant by pouring until water flows in the overflow port 12.

(4) Waiting for the discharge amount to be constant in the overflow tank 30, and measure the outflow amount Q (cm ³ ) for 30 seconds with the measuring cylinder 40.

⑤ At the same time, measure the water level difference between the overflow tank level and the water supply side drain level for 30 seconds.

⑥ Permeability coefficient is to test three samples at intervals of 1 minute or more and express the average of each value.

(3) calculation

Permeability coefficient is calculated according to the following equation (1).

K = d / h × Q / (A × 30s) ------------ Equation 1

Where K is the permeability coefficient (mm / s), and Q is the amount of water discharged (cm ³ )

        d: thickness of the block (mm), h: water level difference (mm)

A: Cross section of the block (mm ² ), 30s: Measurement time (sec)

In addition, the "Permeability Test Test Apparatus, Method, and Calculation Method" specified in KSF 2494 (Indoor Permeability Test Method of Drainage Asphalt Mixture), except for the form form (cylindrical) and the measurement time, is described above. Almost like a concrete interlocking block).

However, the permeability test method of the KSF 4419 (concrete interlocking block for sidewalks) and KSF 2494 (indoor permeability test method of drainage asphalt mixture) of the Korea Industrial Standard KSF 4419 (the initial permeable packaging material (block, asphalt mixture, etc.) Since the permeation test was carried out with clean water (distilled water), the permeation performance of the permeation packing caused by the contaminants could not be reflected or predicted.

SUMMARY OF THE INVENTION An object of the present invention is to provide a permeability testing apparatus and method for permeable packaging material capable of measuring the permeability coefficient of the permeable packaging material in an environment such as a road state in which a real vehicle or the like passes, wherein the voids of the permeable packaging material are caused by contaminants. It is to provide a test equipment for permeability sustainability verification of permeable packaging material that simulates this clogging environment.

Another object of the present invention is to use the permeability test device of the permeable packaging material, and then put the contaminant into the permeable packaging material, the permeable packaging material (vibration block, drainage asphalt mixture, permeable concrete, etc.) ) To provide the environment that is most similar to the actual road so that the permeability coefficient changes according to the environment such as time-lapse and rainy weather.

In addition, by allowing the present invention to compare the performance of the permeable packaging materials produced by various companies, to provide a method for verifying the permeability performance persistence of the permeable packaging material that can help the user (consumer, etc.) to select a good quality permeable packaging material. will be.

To this end, the present invention provides a table on which the dies specified in KSF 4419 can be placed; A body supporting the table with a spring; And a vibration generator provided at the bottom of the table and applying a uniform vibration to the table so that the contaminant or the dilution of the contaminant placed on the surface of the permeable packaging material embedded in the formwork penetrates into the voids in the permeable packaging material. have.

Since the permeability performance test and test equipment and method of permeability packaging material according to the present invention can measure the permeability coefficient of the permeable packaging material in an environment such as in a real road condition in which the air permeability of the permeable packaging material can be blocked by contaminants, It is possible to know the change of the permeability coefficient according to the environment, and compare the products produced by each permeable packaging material manufacturers, there is an effect that can select a good permeable packaging material.

1 is a perspective view showing the die used in the "permeability test" of the Korean Industrial Standard KSF 4419
2 is a cross-sectional view schematically showing the permeability test apparatus used in the "permeability test" of the Korean Industrial Standard KSF 4419, the state equipped with the formwork
Figure 3 is an exploded perspective view of the test apparatus of one embodiment of the present invention
Figure 4 is an assembled perspective view of the test apparatus of one embodiment of the present invention
Figure 5 is a side cross-sectional view of the test apparatus of one embodiment of the present invention
6 is a front sectional view of a test apparatus of one embodiment of the present invention;
7 is a flow chart showing a test method of an embodiment of the present invention

3 to 6, the test apparatus of one embodiment of the present invention is provided with a body 100 which is placed on the floor and movable during use, and a spring 300 is provided on all sides of the body 100. do. The top of the spring 300 is provided with a flat table 200, the table 200 is provided with a rectangular water plate 201 at the top so that water does not overflow outside the table 200, the table The bottom of the 200 is provided with a vibration generator 400 in both directions. Each of the vibration generators 400 are arranged so that the vibration directions are crossed with each other so that vibrations are not locally generated in the table 200.

Brackets 201 are provided at the centers of both sides of the table 200, and each bracket 201 is provided with bolts 204 connected to and hinged by the hinge portion 205. A formwork 500 is placed on an upper portion of the table 200, and the formable packing material 600 of the test object is fixed therein. And when the bolt 204 is fitted in the connecting groove 503 formed on both ends of the pressing bar 502 across the upper end of the die 500, the nut 206 is The presser bar 502 is fastened to firmly fix the die 500 to the table 200. Reference numeral 202 is formed in the cross shape on the surface of the table 200 to maintain the formwork 500 to float on the surface of the table 200, 207 is a drain, 208 is a valve, 401 is the vibration generator It is a controller for controlling the vibration intensity and time of 400.

In the present invention configured as described above, the permeability test is performed in the same manner as in FIG. 7. First, the permeability packing material 600 that is the permeability test target is fixed in the formwork 500. The formwork 500 is defined in the Korean Industrial Standard KSF4419 (concrete interlocking block for a roadway), and is divided into two sides, and a buffer material 501 for watertightness is provided therein. Therefore, the permeable packaging material 600 inside the formwork 500 and fastening the bolts on both sides, the formwork 500 is tightened while the permeable packaging material 600 is firmly formed in the formwork 500 by the cushioning material 501. And tightly fixed.

Thereafter, the die 500 is placed on the table 200, the die 500 is placed on the die 500 across the pressing rod 502, and the die 500 is disposed with the bolt 204 and the nut 206. ) Is fixed on the table 200. After putting the permeable packaging material 600 to test the permeability performance as described above on the table 200, the test proceeds as follows.

Before proceeding to the next procedure, check the level. If the level is not correct, turn the height adjusting dial at the bottom of the test device to level it. After that, prepare the junk. The cladding is stacked on the road, and prepares a grab of a proportion proportional to the area of the permeable packaging material 600 for the test, the criterion (weight, particle size) of the cladding is determined as follows.

1.Cross weight

In order to grasp the weight and particle size of the debris generated on the road, the debris collected from the road dust cleaner was used.

Road dust cleaning cars work on major roads once a day, 6 days a week (Mon / Tue / Wed / Thu / Fri / Sat) to improve air quality in Seoul. The results of comparing the weights of the contaminants collected from the road dust cleaners over the two days are as follows.

division Day 1 (`11.9.26, Mon) Day 2 (`11.9.27, Wed) Average Large mess 27.60kg 30.70kg 29.15kg Fine dust 19.90kg 26.45kg 23.18kg Gun mess 47.50kg 57.15kg 52.33 kg

In addition, the weight ratio of large contaminants and fine dust is as follows.

Large contaminants: fine dust = 29.15: 23.18 = 0.56: 0.44

2. Weight of contaminants per distance, area

The section, extension and lane width information operated by the road dust cleaning vehicle that collected the contaminants are as follows.

-Service section: Eunpyeong-gu (Susaek-ro, Jeungsan-ro, Eunpyeong-ro, Seoreung-ro, Jinheung-ro, Tongil-ro, Yeonseo-ro)

-Extension: 45km (1 lane)

Lane width: 3.5m

The complexes collected from the road dust cleaning car are calculated as follows.

division Large mess Fine dust Gun mess Grab weight per distance (mg / m) 648 515 1163 Complex weight per area (mg / ㎡) 185 147 332

3. Analysis and improvement of the amount of contaminants

The weight of contaminants per unit area (m 2) calculated above is the amount of contaminants collected during the day. In order to check the performance of the permeable packaging material, the amount of contaminants is converted into a long term (2-5 years), and the results are converted into the form and size of the test sample again.

-Weight of daily contaminants per unit area: 332mg / ㎡ / day

-Weight of contaminants according to common training

  2 years: 332mg × 365 days × 2 years = 242g / ㎡

  3 years: 332mg × 365 days × 3 years = 364g / ㎡

  5 years: 332mg × 365 days × 5 years = 606g / ㎡

-Weight of contaminants when applied to samples

Sample form Square sample Round sample Special type (U-shaped block) Block size 10 cm x 20 cm 20 cm x 20 cm 30cm × 30cm 10cm in diameter 10 cm x 20 cm 11 cm x 22 cm weight
(g) 2 years 5 10 22 2 5 6 3 years 7 15 33 3 7 9 5 years 12 24 55 5 12 15

                                            (Rounded to a decimal point)

4. Analysis of Average Particle Size

The average particle size of the contaminants was calculated through a sieve test in accordance with KSF 2502. The results of the synthesis according to the weight ratio of the collected large contaminants and fine dust (0.56: 0.44) are shown in the following table.

Grain weight percentage (%) 10 mm
5 mm
(No.4) 2.5 mm
(No.8) 1.2 mm
(No.16) 0.6 mm
(No.30) 0.3 mm
(No.50) 0.15 mm
(No.100) 0.08 mm
(No.200) 100 93-100 88-99 80-95 55-80 25-50 7-14 2 ~ 6

※ Since this sample is collected from a part of Seoul, it is difficult to represent contaminants of the entire area of Seoul, so the particle size is calculated with an error of 5 to 30%.

5. Results of Analysis of Complex

The particle size that occupies the most part of the contaminants is particles having a size between No. 30 and No. 50, and are sand and dust having a particle diameter of about 0.3 to 0.6 mm. And it is believed that the pore clogging caused by the wash down by rain water.

When the dry matter is prepared in the same manner as described above to apply it evenly distributed on the surface of the permeable packaging material 600 to test and flatten it evenly using a soft brush or the like. Thereafter, the vibration generator 400 is operated for a predetermined time (30 seconds or more) to allow the impurities to penetrate into the permeable packaging material 600. The permeable packaging material used at this time should be completely dry. When the vibration generator 400 is operated, the table 200 vibrates back and forth, left and right and up and down by the vibration, and the vibration intensity is controlled by the controller 401. Through such a process, a contaminant penetrates into the inside of the permeable packaging material 600 to implement a clogging phenomenon due to a vehicle load.

In a state in which the vibration generator 400 is continuously operated, a predetermined amount of clean water (distilled water) is poured into the formwork 500 to infiltrate into the permeable packaging material 600. This is to create a rainy environment as the contaminants are penetrated into the interior of the permeable packaging material 600 by the rain water to realize an environment in which voids are blocked. After pouring the water (distilled water), stir continuously with a rod, etc. to prevent any condensate from gathering in one direction of the sample.

When the vibration generator 400 mounted below the table 200 operates, the spring 300 is disposed between the body 100 and the table 200 so that the vibration of the table 200 is not transmitted to the body 100. Four were installed and the body 100 was made to be heavy.

The vibration motor size, vibration time and amount of water (distilled water) of the vibration generator used in the above test are as follows.

Vibration motor frequency: 100 HZ

  ※ Vibration motor source: pole number 2P, constant 3PH, output 0.1KW, voltage 220V, current 0.2 ~ 0.5A

-Vibration time: 30 seconds or more after application of the impurities, 30 seconds or more after pouring water (distilled water)

The amount of water (distilled water)

Sample form Square sample Round sample Special type (U-shaped block) Block size 10 cm x 20 cm 20 cm x 20 cm 30cm × 30cm 10cm in diameter 10 cm x 20 cm 11 cm x 22 cm Distilled water 200 ml 400 ml 900 ml 80 ml 200 ml 400 ml

Wait for the water (distilled water) to drain all the way to the bottom of the sample after the specified vibration time. When all of the water (distilled water) is drained, the permeable packaging material 600 is separated from the formwork 500, and the remaining impurities on the surface are shaken off with a soft brush, and then KSF 4419 (concrete interlocking block for sidewalks) or KSF 2494 ( Permeability test shall be carried out in the manner specified in the Indoor Permeability Test Method for Drainable Asphalt Mixtures. If the permeability test cannot be performed immediately or if the sample is to be moved and tested, the sample should be well packed with a wrap.

If the time it takes for the water (distilled water) to fall into the lower part of the sample exceeds 2 minutes, the formwork can be separated after water (distilled water) is left and the subsequent work can be considered as impervious or omitted and the subsequent work can be omitted. have.

By comparing the permeability coefficient (average value of three samples) of the permeable packaging material after the pore blocking test and the permeability coefficient of the permeable packaging material at the time of production without the pore-clogging test as described above, the permeability performance of the permeable packaging material is verified. can do.

In addition, the permeability coefficient of the permeable packaging material after the pore-clogging test can be divided and managed by grades (eg, grades 1 to 5) from good to bad permeability.

100: body 200: table
201: water plate 202: gap retaining zone
203: bracket 204: bolt
205: hinge portion 206: nut
300: spring 400: vibration generator
401 controller 500 die
501: cushioning material 600: permeable packaging material

Claims (4)

Table on which the dies specified in KSF 4419 and KSF 2494 can be placed;
A body supporting the table with a spring; And
A vibration generator provided at the bottom of the table and applying uniform vibration to the table so as to infiltrate the voids inside the permeable packaging material with the water or the dilution of the contaminant or the dilution water placed on the surface of the permeable packaging material embedded in the formwork. Permanent permeability verification test device for permeable packaging material. The method of claim 1,
Both sides of the table are provided with a pair of bolts pivoted by a hinge portion,
It is provided with a push rod that lies across the die,
The bolt is mounted on both ends of the presser bar, and the bolt and the presser bar are fixed so that the formwork is firmly fixed to the table,
Permeability performance test device for permeability performance of the permeable packaging material characterized in that a plurality of springs are installed between the body and the table so that the vibration of the table is not transmitted to the body. In the method for testing the permeability performance persistence of the permeable packaging material using the test apparatus of claim 1,
Determining an amount and a particle size of the contaminants to be placed on the surface of the permeable packaging material;
Placing the contaminants collected from the road uniformly on the surface of the permeable packaging material and operating the vibration generator to allow the contaminants to seep into the interior of the permeable packaging material;
Pouring water (distilled water) onto the surface of the permeable packaging material into which the contaminants penetrate, and operating the vibration generator to infiltrate the water into the permeable packaging material; And collecting permeable packaging materials having undergone the above steps and performing permeation tests according to the methods specified in KSF 4419 and KSF 2494. The method of claim 3, wherein
Permeability packaging material characterized in that the permeability coefficient of the permeable packaging material that has undergone permeability testing is divided into grades (1-5 grades) from good permeability to poor permeability to select and manage permeable permeability having good permeability sustainability. Permeability Persistence Verification Test Method

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