CN211318133U - Detection device for detecting lateral water permeability of road asphalt sample - Google Patents
Detection device for detecting lateral water permeability of road asphalt sample Download PDFInfo
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- CN211318133U CN211318133U CN201922284007.1U CN201922284007U CN211318133U CN 211318133 U CN211318133 U CN 211318133U CN 201922284007 U CN201922284007 U CN 201922284007U CN 211318133 U CN211318133 U CN 211318133U
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Abstract
The utility model relates to an asphalt road detects technical field, especially relates to a detection device for detecting road asphalt sample side direction water permeability, including test box, hydraulic means and water tank, be provided with longitudinal extension's income water cavity and waterproof sealing piece in the test box, set up a plurality of longitudinal arrangement's through-hole on the waterproof sealing piece, each through-hole left end termination lets in the water cavity, and the right-hand member is put through the honeycomb duct that has inclined downwards respectively, the graduated flask has been placed to the lower extreme of honeycomb duct correspondence respectively, seal installation has the test box that is used for laying asphalt layer sample in each through-hole respectively. The utility model relates to a detection apparatus for be used for detecting road asphalt sample side direction water permeability can carry out the detection of side direction water permeability to the pitch layer sample before laying the pitch road surface, selects the pitch layer sample that side direction water permeability is best according to the test result again to lay the road surface, so alright with realize the construction of pitch road more with the foundation.
Description
Technical Field
The utility model relates to an asphalt road detects technical field, especially relates to a detection device for detecting road asphalt sample side direction water permeability.
Background
A large number of engineering practices show that moisture has a significant influence on the quality of use of asphalt pavements. The sources of moisture are various, the most common of which is rainfall in rainy season, and the moisture gradually permeates into the mixture from the road surface downwards, and the moisture is filled into the mixture to be the main reason for damaging the road surface due to the large road surface void ratio. The water permeability of the asphalt pavement is an important index for reflecting the performance of the asphalt mixture, if the asphalt pavement is permeable, early damages such as stripping, pit and slot, loosening and the like are inevitably caused, and meanwhile, water enters a base layer or a roadbed, so that the bearing capacity of the pavement is reduced. Therefore, the road water permeability coefficient is an important index for evaluating the road performance.
The conventional road surface water seepage test method is JTG E60-2008 "highway subgrade and road surface field test regulation" (T0971-2008), and the device has a problem that the edge is difficult to be completely sealed by a sealing material in the practical application process, and meanwhile, water may return to the road surface from the connected gap and does not permeate into the structural layer, so whether the road surface is water seepage or not cannot be confirmed. In addition, the selection of the sealing material in the test is also strict, and the influence of lateral seepage is often aggravated in the use process of the material with poor fluidity and waterproofness, which seriously influences the popularization of the pavement seepage test, so that the development of a seepage instrument for detecting the asphalt mixture becomes necessary.
In order to solve the above technical problems, a lot of devices for detecting the water permeability of the asphalt mixture have appeared in the prior art, and generally, an asphalt mixture sample is fixedly placed in a container filled with water, and water pressure is applied to the asphalt sample from the top downwards through a hydraulic device, so that the water permeability of the asphalt sample is observed.
However, in the actual asphalt pavement laying work, the asphalt pavement is laid by separating multiple layers of asphalt, the asphalt layer of the bottom layer is laid firstly during construction, the asphalt layer of the bottom layer is further continuously laid upwards after being cooled, so that the asphalt pavement is multi-layered in the longitudinal direction, and the material mixing proportion of each layer of asphalt layer is different, so that the water seepage performance of the asphalt detected by applying water pressure to the asphalt sample from the upper side deviates from the actual situation, and the actual water seepage situation of the asphalt pavement can be closer to the lateral water seepage performance detection of the asphalt mixture sample.
SUMMERY OF THE UTILITY MODEL
The utility model discloses on the basis of above technical problem, provide a detection device for detecting road asphalt sample side direction water permeability, can carry out the detection of side direction water permeability to the asphalt layer sample before laying the asphalt road surface, select the asphalt layer sample that side direction water permeability is best again according to the test result to lay the road surface, so alright realize the construction of asphalt road more with the foundation.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a detection device for detecting the lateral water permeability of a road asphalt sample comprises a test box, a hydraulic device and a water tank, wherein a longitudinally extending water inlet cavity and a waterproof sealing block are arranged in the test box, a plurality of longitudinally arranged through holes are formed in the waterproof sealing block, the left end of each through hole is connected with the water inlet cavity, the right end of each through hole is connected with a downwards inclined flow guide pipe, a measuring cup is correspondingly placed at the lower end of each flow guide pipe, a test box for laying an asphalt layer sample is hermetically installed in each through hole, an opening is formed in the upper side of the test box, a water seepage hole is formed in the left side wall of the test box, a water filtering hole is formed in the right side wall of the test box, the water seepage hole is connected with the water inlet cavity and is connected with the flow guide pipe, a push plate is movably installed at the top opening of the water inlet cavity, a sealing ring is, the piston rod of the hydraulic device is vertically connected to the top of the push plate, a water inlet communicated with the water inlet cavity is formed in the test box, and the water inlet is communicated with the water tank through a pipeline.
Before operation, according to a plurality of different asphalt layer laying schemes, asphalt layers are respectively laid from the upper side opening of each test box to the interior of the test box layer by layer, each test box is hermetically installed in each through hole of the waterproof sealing block after each asphalt layer sample is cooled, then water is conveyed to the water inlet cavity through the water tank and the water inlet, when the liquid level of the water rises to the top opening of the water inlet cavity, the push plate is hermetically installed into the top opening of the water cavity, then the output pressure of the hydraulic device is preset, the piston rod is pushed to downwards press the push plate so as to enable the water inlet cavity to reach the preset water pressure, the water pressure acts on the asphalt layer samples of different schemes in each test box from the water seepage port on the side surface, under the action of the water pressure lasting for a period of time, the water can permeate the asphalt layer samples to the right side, and then flows into the flow guide pipe from the water filtering hole at the bottom of the right side of the test box, and flows down from the side wall of the draft tube and finally falls into the measuring cup at the bottom. Because the asphalt layer samples of various different mixing schemes are subjected to the same water pressure in the water inlet cavity, the same compression time and water seepage time and the same compression area, under the same test condition, the asphalt layer samples of various different mixing schemes can be conveniently compared, after the preset test time is reached, the water seepage performance of the asphalt layer samples of various different mixing schemes can be judged by observing the water body liquid level height in each measuring cup, and then the asphalt layer sample scheme with the best lateral water seepage performance is selected according to the test result to lay the pavement, so that the construction of the asphalt road can be realized more according to the ground.
Therefore the utility model relates to a detection apparatus for be used for detecting road asphalt sample side direction water permeability can carry out the detection of side direction water permeability to the pitch layer sample before laying the pitch road surface, selects the pitch layer sample that side direction water permeability is best according to the test result again to lay the road surface, so alright with the construction that realizes the pitch road more with the foundation.
Further, a control valve is installed at the water inlet, and the water tank is communicated with the control valve through a pipeline. Therefore, the water inlet cavity can be sealed by the control valve in the process that the push plate applies pressure to the water body, and the water pressure in the water inlet cavity is kept.
Furthermore, a water pump is arranged on a pipeline between the water inlet and the water tank, so that water in the water tank can be quickly conveyed into the water inlet cavity through the water pump.
Furthermore, a heating body is arranged at the bottom of the water inlet cavity, and the heating body is externally connected with a power supply. Therefore, asphalt samples in the test boxes can be heated through the heating bodies, and the water seepage performance of the asphalt pavement can be conveniently detected in a simulation mode under a high-temperature environment.
Furthermore, the periphery of each test box is sleeved with a sealing ring, and each test box is respectively and hermetically installed in each through hole through the sealing ring.
Further, a hydraulic gauge is installed on the hydraulic device. The pressure value applied to the outside by the hydraulic device can be observed through the hydraulic meter, and parameters of relevant water permeability performance can be calculated conveniently according to the pressure value.
The utility model has the advantages that:
before operation, according to a plurality of different asphalt layer laying schemes, asphalt layers are respectively laid from the upper side opening of each test box to the interior of the test box layer by layer, each test box is hermetically installed in each through hole of the waterproof sealing block after each asphalt layer sample is cooled, then water is conveyed to the test box through the water tank and the water inlet, when the liquid level of the water rises to the top opening of the water inlet cavity, the push plate is hermetically installed in the top opening of the water cavity, then the output pressure of the hydraulic device is preset, the piston rod is pushed to downwards press the push plate so as to enable the water inlet cavity to reach preset water pressure, the water pressure acts on the asphalt layer samples of different schemes in each test box from the water seepage port on the side surface, under the action of the water pressure lasting for a period of time, the water can permeate the asphalt layer samples to the right side, and then flows into the flow guide pipe from the water filtering hole at the bottom of the right side of the test box, and flows down from the side wall of the draft tube and finally falls into the measuring cup at the bottom. Because the asphalt layer samples of various different mixing schemes are subjected to the same water pressure in the water inlet cavity, the same compression time and water seepage time and the same compression area, under the same test condition, the asphalt layer samples of various different mixing schemes can be conveniently compared, after the preset test time is reached, the water seepage performance of the asphalt layer samples of various different mixing schemes can be judged by observing the water body liquid level height in each measuring cup, and then the asphalt layer sample scheme with the best lateral water seepage performance is selected according to the test result to lay the pavement, so that the construction of the asphalt road can be realized more according to the ground.
Therefore the utility model relates to a detection apparatus for be used for detecting road asphalt sample side direction water permeability can carry out the detection of side direction water permeability to the pitch layer sample before laying the pitch road surface, selects the pitch layer sample that side direction water permeability is best according to the test result again to lay the road surface, so alright with the construction that realizes the pitch road more with the foundation.
Drawings
Fig. 1 is the internal schematic view of the whole structure of the present invention.
Fig. 2 is a schematic sectional view of a partial structure of the present invention.
Fig. 3 is a schematic view of the asphalt pavement sample of the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and schematic or simplified schematic drawings only, not for the purpose of limiting the same, and not for the purpose of limiting the same; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Furthermore, if terms such as "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, it will be apparent to those of ordinary skill in the art that the specific meanings of the above terms may be understood according to particular circumstances.
As shown in fig. 1, a detection apparatus for detecting lateral water permeability of a road asphalt sample, comprising a test box 100, a hydraulic apparatus 200 and a water tank 300, wherein the hydraulic apparatus 200 is provided with a hydraulic gauge 202, the test box 100 is provided with a longitudinally extending water inlet chamber 400 and a longitudinally extending waterproof sealing block 500, the waterproof sealing block 500 is provided with a plurality of longitudinally arranged through holes 501, the left end of each through hole 501 is connected to the water inlet chamber 400, the right end of each through hole 501 is respectively communicated with a downwardly inclined flow guide pipe 600, the lower end of each flow guide pipe 600 is respectively and correspondingly provided with a measuring cup 700, a test box 800 for laying an asphalt layer sample is respectively and hermetically installed in each through hole 501, as shown in fig. 1-2, the upper side of the test box 800 is provided with an opening 801, the left side wall is provided with a water seepage port 802, the right side wall is provided with a water drainage hole 803, the water seepage port 802 is communicated with the water inlet chamber, go into the open-top movable mounting of water cavity 400 and have push pedal 401, the sealing washer 402 has been cup jointed to the periphery of push pedal 401, and the open-top of water cavity 400 is sealed into through sealing washer 402 to push pedal 401, and hydraulic means 200's piston rod 201 is connected perpendicularly in the top of push pedal 401, has seted up on the test box 100 and has connect the water inlet 101 that lets in water cavity 400, and water inlet 101 passes through the pipeline switch-on with water tank 300. The water inlet 101 is provided with a control valve 103, and the water tank 300 is communicated with the control valve 103 through a pipeline. A water pump 104 is provided on a pipe between the water inlet 101 and the water tank 300. The periphery of each test box 800 is sleeved with a sealing ring 804, and each test box 800 is respectively and hermetically installed in each through hole 501 through the sealing ring 804.
With reference to fig. 1 to 3, three different asphalt layer sample schemes are pre-designed, the number of layers of different asphalt layer sample schemes, or the asphalt mixing ratio of each layer, or the asphalt layer thickness distribution, etc. may be different, before operation, according to the above different asphalt layer laying schemes, asphalt layers are pre-laid layer by layer from the upper side opening 801 of each test box 800 into the test box 800, respectively, to simulate a real asphalt pavement, after each asphalt layer sample is cooled, each test box 800 is hermetically mounted into each through hole 501 of the waterproof sealing block 500, then a water body is conveyed to the water inlet cavity 400 through the water tank 300 and the water inlet 101, when the liquid level of the water body rises to the top opening of the water inlet cavity 400, the push plate 401 is hermetically mounted into the top opening of the water cavity 400, then the output pressure of the hydraulic device 200 is preset, the piston rod 201 is pushed to press the push plate 401 downwards, so that the water inlet cavity 400 reaches a preset water pressure, the water pressure acts on the asphalt layer samples of various schemes in each test box 800 from the water seepage port 802 on the side surface, and under the action of the water pressure lasting for a period of time, the water body permeates the asphalt layer samples to the right, then flows into the flow guide pipe 600 from the water filtering holes 803 at the bottom of the right side of the test box 800, and finally falls into the measuring cup 700 at the bottom after flowing downstream from the side wall of the flow guide pipe 600. Because the water pressure that the asphalt layer sample of various different mixed schemes received is the same in income water cavity 400, pressurized time and infiltration time are the same, and the area of pressurized is the same, consequently under the same test condition, can be convenient for compare the asphalt layer sample of various different mixed schemes, reach preset test time after, alright through observing the water liquid level height in each graduated flask, judge the infiltration performance of the asphalt layer sample of each different mixed scheme, select the asphalt layer sample scheme that the lateral seepage performance is the best according to the test result and lay the road surface, so alright realize the construction of bituminous road more according to ground.
Therefore the utility model relates to a detection apparatus for be used for detecting road asphalt sample side direction water permeability can carry out the detection of side direction water permeability to the pitch layer sample before laying the pitch road surface, selects the pitch layer sample that side direction water permeability is best according to the test result again to lay the road surface, so alright with the construction that realizes the pitch road more with the foundation.
As a further addition and improvement to the present embodiment, as shown in fig. 1, a heating element 403 is attached to the bottom of the water inlet chamber 400, the heating element 403 is an aluminum metal plate, and the heating element 403 is externally connected to a power supply 404. Therefore, the asphalt samples in the test boxes 800 can be heated by the heating bodies 403, and the water seepage performance of the asphalt pavement can be conveniently detected by simulating under a high-temperature environment.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a detection apparatus for be used for detecting road asphalt sample side direction water permeability, includes test box (100), hydraulic means (200) and water tank (300), its characterized in that, be provided with longitudinally extended income water cavity (400) and waterproof sealing block (500) in test box (100), set up a plurality of longitudinal arrangement's through-hole (501) on waterproof sealing block (500), each through-hole (501) left end termination lets in water cavity (400), and the right-hand member is led in respectively to honeycomb duct (600) that has the decline, the lower extreme of honeycomb duct (600) corresponds respectively and has placed graduated flask (700), each through-hole (501) is interior sealed the installation respectively and is used for laying test box (800) of pitch layer sample, and the upside of test box (800) is equipped with opening (801), and the left side wall is equipped with infiltration mouth (802), and the right side wall is equipped with drainage hole (803), and infiltration mouth (802) connect and let in water cavity (400), drainage hole (803) switch-on honeycomb duct (600), the open-top movable mounting who goes into water chamber (400) has push pedal (401), sealing washer (402) have been cup jointed to the periphery of push pedal (401), and push pedal (401) are sealed through sealing washer (402) the open-top of going into water chamber (400), piston rod (201) of hydraulic means (200) connect perpendicularly in the top of push pedal (401), seted up the switch-on test box (100) go into water inlet (101) of water chamber (400), water inlet (101) with water tank (300) pass through the pipeline switch-on.
2. The detection apparatus for detecting lateral water permeability of a road asphalt sample according to claim 1, wherein the water inlet (101) is provided with a control valve (103), and the water tank (300) is communicated with the control valve (103) through a pipeline.
3. The detection device for detecting the lateral water permeability of the road asphalt sample according to claim 2, wherein a water pump (104) is arranged on a pipeline between the water inlet (101) and the water tank (300).
4. The detection device for detecting the lateral water permeability of the road asphalt sample according to claim 3, wherein a heating element (403) is arranged at the bottom of the water inlet cavity (400), and a power supply (404) is connected to the outside of the heating element (403).
5. The detection apparatus for detecting the lateral water permeability of a road asphalt sample according to claim 4, wherein a sealing ring (804) is sleeved on the periphery of each test box (800), and each test box (800) is hermetically installed in each through hole (501) through the sealing ring (804).
6. The detection device for detecting the lateral water permeability of the road asphalt sample according to claim 5, wherein a hydraulic gauge (202) is installed on the hydraulic device (200).
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| CN201922284007.1U CN211318133U (en) | 2019-12-18 | 2019-12-18 | Detection device for detecting lateral water permeability of road asphalt sample |
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| CN201922284007.1U CN211318133U (en) | 2019-12-18 | 2019-12-18 | Detection device for detecting lateral water permeability of road asphalt sample |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758837A (en) * | 2021-09-03 | 2021-12-07 | 中交投资南京有限公司 | Permeable-layer emulsified asphalt permeation effect experimental device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758837A (en) * | 2021-09-03 | 2021-12-07 | 中交投资南京有限公司 | Permeable-layer emulsified asphalt permeation effect experimental device and method |
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