CN112881263A - Three-in-one detection method for high-elasticity rubber asphalt composite gravel seal - Google Patents
Three-in-one detection method for high-elasticity rubber asphalt composite gravel seal Download PDFInfo
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- 239000010426 asphalt Substances 0.000 title claims abstract description 101
- 239000002131 composite material Substances 0.000 title claims abstract description 67
- 238000001514 detection method Methods 0.000 title claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 239000011800 void material Substances 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 238000011895 specific detection Methods 0.000 claims abstract description 5
- 238000009718 spray deposition Methods 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 16
- 238000005553 drilling Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 244000007853 Sarothamnus scoparius Species 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000011387 rubberized asphalt concrete Substances 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000011161 development Methods 0.000 abstract description 5
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 238000011056 performance test Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 30
- 238000010276 construction Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 230000003449 preventive effect Effects 0.000 description 5
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003305 oil spill Substances 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- G—PHYSICS
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- 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
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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
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- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
- G01N2009/026—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids the volume being determined by amount of fluid displaced
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Abstract
The invention discloses a three-in-one detection method for a high-elasticity rubber asphalt composite macadam seal layer, which comprises the following steps: s1: selecting a sampling point; s2: detecting the waterproofness; s3: detecting the density; s4: detecting the void ratio; s5: repeat S to the remaining sample points2‑S4Calculating to obtain the field water seepage coefficient of the high-elasticity rubber asphalt composite macadam seal layer
Degree of in situ compaction
And in situ porosity
The method for detecting water repellency, relates toThe device that reaches includes cavity drill bit, infiltration appearance, and the cavity drill bit includes cavity drill bit, lower cavity drill bit, and its specific detection step is as follows: a. the1: the preparation work before the waterproof performance test is performed, and after the preparation work is completed, the waterproof performance test is started. The invention can realize one-time detection of three indexes of waterproofness, density and void ratio, has high detection efficiency, solves the problem which cannot be solved by the traditional method, and has great significance for the development of the high-elasticity rubber asphalt composite macadam seal technology in China.
Description
Technical Field
The invention relates to the technical field of road structure field performance detection, in particular to a high-elasticity rubber asphalt composite macadam seal three-in-one detection method.
Background
In recent years, with the rapid development of the economy of China, the transportation industry enters the rapid development era. However, municipal road construction in China starts relatively late, technical strength is relatively weak, and under the comprehensive action of traffic load and natural environment, early-stage damage phenomena such as cracks, settlement, rutting, oil spill and the like appear in advance only a few years after a road surface (particularly an asphalt road surface) is put into operation, so that the service performance of the road surface is greatly reduced. The early damage of the road surface is developed into the biggest problem in road construction in China, and maintenance and repair work is urgent and is developed into one of the important work carried out by the transportation department.
In the middle and later stages of the 90 s of the 20 th century, the advanced concept and technology of preventive maintenance are introduced from Shanghai. The preventive maintenance technology is essentially a mandatory maintenance measure, when the road surface structure has not produced diseases or the disease phenomenon just occurs, the maintenance is carried out in advance to kill the diseases in the cradle, and the initiative of maintenance is mastered so as to delay the damage of the road surface. At that time, the preventive maintenance technologies introduced in Shanghai include slurry seal, micro surfacing and the like, and now with the rapid development of science and technology, the preventive maintenance technologies are continuously updated, and a plurality of new technologies, new processes and preventive maintenance technologies of new materials are generated. The current technology of asphalt macadam seal is simple and widely used.
The high-elastic rubber asphalt macadam seal is characterized in that a layer of single-particle-size macadam is spread immediately after a base layer or a surface layer is sprayed with a layer of high-elastic rubber asphalt, a thin layer seal formed after rolling can seal fine cracks of the base layer or the surface layer, water is prevented from invading a pavement, and meanwhile, the rubber asphalt has excellent elasticity.
The high-elasticity rubber asphalt composite macadam seal layer is formed by combining a plurality of single-layer high-elasticity rubber asphalt macadam seal layers, the particle size of each layer is reduced from bottom to top in sequence, an embedded and extruded compact structure can be formed, the strength is higher, the anti-reflection crack capability is stronger, and the following problems still exist at present:
1. the construction of the high-elasticity rubber asphalt composite broken stone seal layer completely depends on construction experience, and due to the special structure of the high-elasticity rubber asphalt composite broken stone seal layer, the on-site waterproofness, density and void ratio cannot be detected, the construction quality is not guaranteed, and a high-elasticity rubber asphalt composite broken stone seal layer on-site detection method is urgently needed to guide the construction and guarantee the construction quality.
2. Because the compound rubble seal coat of high-elastic rubber pitch is one kind and inlays crowded type structure, the space between the rubble is still comparatively big relatively, if adopt the infiltration appearance to detect, water just can transversely flow from the space between the rubble very fast, is difficult to detect the infiltration coefficient to this kind of structure is generally directly spread on former road surface, and the waterproof nature on former road surface has certain influence to it.
3. Because the structure of the high-elasticity rubber asphalt composite macadam seal coat is still loose before the asphalt concrete surface layer is paved, the extracted core sample can have a serious particle falling phenomenon during core drilling and sampling, so that the real density and the porosity can not be detected.
4. The traditional road surface field quality detection method can only detect a single index at one time, cannot realize continuous detection of multiple road performances, and is low in efficiency.
5. The method for detecting the water seepage coefficient by using the water seepage instrument is a common method for detecting the field waterproofness, is relatively complicated to operate, and is sealed by using materials such as glass putty, plasticine and the like, so that the sealing effect is poor, and the road surface is polluted.
6. The core drilling sampling method is a common method for field sampling, the damage to the road surface is great, the repairing work of the reserved holes is complicated, the function of the road surface is greatly influenced even if the holes are not properly treated, the method is limited to a construction process, and the repairing of the high-elastic rubber asphalt composite crushed stone seal layer is more difficult.
Disclosure of Invention
The invention aims to overcome the defects of the existing high-elasticity rubber asphalt composite macadam seal quality detection technology and provides a high-elasticity rubber asphalt composite macadam seal three-in-one detection method.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a three-in-one detection method for a high-elasticity rubber asphalt composite macadam seal coat comprises the following steps:
S1: selecting a sampling point;
S2: detecting the waterproofness;
S3: detecting the density;
S4: detecting the void ratio;
S5: repeat S to the remaining sample points2-S4Calculating to obtain the field water seepage coefficient of the high-elasticity rubber asphalt composite macadam seal layer
Degree of in situ compaction
And in situ porosity
The waterproof performance detection method relates to a device comprising a hollow drill bit and a water seepage instrument, wherein the hollow drill bit comprises an upper hollow drill bit and a lower hollow drill bit, and the waterproof performance detection method comprises the following specific detection steps:
A1: firstly, carrying out preparation work before the waterproof performance detection, after the preparation work is finished, starting the waterproof performance detection, drilling a hollow drill bit into the interior of the high-elastic rubber asphalt composite gravel seal until the hollow drill bit is submerged into the roadbed or the original pavement, stopping drilling, and detachingAn upper hollow drill bit;
A2: placing a water seepage instrument on the lower hollow drill bit, adding a balance weight to ensure that no gap exists between the lower hollow drill bit and the water seepage instrument, and detecting the waterproof performance of the high-elasticity rubber asphalt composite gravel seal layer by using the water seepage instrument according to the specification to obtain the water seepage coefficient Cw；
The density detection method comprises the following specific detection steps:
B1: after the waterproof performance is detected, performing preparation work before density detection;
B2: pouring high-elastic rubber asphalt into the bottom of the core sample through an asphalt pouring opening, and recording the mass M of the poured high-elastic rubber asphalt3After the high-elastic rubber asphalt is cooled, lifting the lower hollow drill bit and the core sample out of the high-elastic rubber asphalt composite broken stone sealing layer, taking out the bottom cover to seal the lower hollow drill bit, drying the core sample by using a high-power blower for 50-60 min;
B3: when the core sample is cooled to the outdoor temperature, the core sample is placed on an electronic scale to be weighed to obtain the weight MDry matterAccording to the formula
MCore＝MDry matter-M1-M2-M3
Wherein M isCore-the oven-dried mass of the core sample, Kg; m1-the mass of the lower hollow drill, Kg; m2-bottom cover mass, Kg; m3-the mass of the high-elastic rubberized asphalt poured, Kg;
calculating to obtain the drying mass M of the core sampleCore；
B4: placing the water seepage instrument on a lower hollow drill bit, compacting by using a balancing weight, adding water into the measuring cylinder until the height of the exhaust pipe is consistent with that of the liquid level of the measuring cylinder, stopping adding water, and recording the liquid level readings H of the exhaust pipe and the measuring cylinder at the moment1、H2And volume V of water added1According to the formula
wherein rho is apparent density of core sample, Kg/m3；VCoreCore sample comprising the volume of closed pores, m3；S1Exhaust pipe cross-sectional area, m2；S2Cross-sectional area of graduated cylinder, m2；h1-fast flow tube length, m; s3Area of cross-section of the flow duct, m2；h2-height of the bottom cavity, m; r is the radius of the lower bottom of the bottom cavity, m; r-radius of upper bottom of cavity at bottom, m; h3-height of lower hollow drill bit, m; s3Cross-sectional area of lower hollow drill bit, m2；
Calculating to obtain the density rho of the core sample;
the detection method of the void ratio comprises the following specific steps:
C1: after the density detection is finished, carrying out preparation work of void ratio detection;
C2: adding water into the measuring cylinder until the height of the exhaust pipe reaches H again1Record the volume V of water added at this time2According to the formula
ΔV＝V1-V2And
obtaining the void ratio V of the core sampleV；
Preferably, S1Selecting a sampling point, and selecting 3 places with serious damage conditions of the original road surface as waterproof detection sampling points of the high-elasticity rubber asphalt composite crushed stone sealing layer twenty-four hours after the high-elasticity rubber asphalt composite crushed stone sealing layer is started;
preferably, A is1Before the waterproof performance is detected, the broom is used to sweep the loose gravels and sundries on the surface of the high-elasticity rubber asphalt composite gravels sealing layer.
Preferably, the hollow drill bit comprises an upper hollow drill bit and a lower hollow drill bit, the upper hollow drill bit comprises a connector and a threaded groove, the connector is located at the top of the upper hollow drill bit, the threaded groove is located at the bottom of the upper hollow drill bit, the lower hollow drill bit comprises a thread extending end, an outer wall, a diamond blade and an asphalt filling opening, the lower hollow drill bit is divided into two parts, one part of the lower hollow drill bit extends out of the outer wall to form a clamping plate, the other part of the lower hollow drill bit extends out of the outer wall to form a clamping groove, the clamping plate is matched with the clamping groove, the thread extending end is located at the top of the lower hollow drill bit, the asphalt filling opening is formed in the inner side of the thread extending end and vertically penetrates through the lower hollow drill bit, the.
Preferably, B is1And (3) preparing before density detection, taking down the water seepage instrument, wiping water stains on the surface of the sampling point by using a cleaning cloth, and drying the surface of the sampling point by using a high-power electric hair drier.
Preferably, said C1And preparing for detecting the medium porosity, namely taking down the water seepage instrument and the bottom cover, wiping water stains of the water seepage instrument and the lower hollow drill bit by using a cleaning cloth, drying by using a high-power blower, applying pressure again to press the water seepage instrument on the lower hollow drill bit, and adding a balance weight.
Preferably, said S5In
And
the calculation formula of (2) is as follows:
wherein, Cwi-water permeability coefficient at point i, mL/min; rhoiCore sample density at the ith point, kg/m3；ρaHigh-elastic rubber asphalt compositeStandard density of chip seal, kg/m3。
Preferably, the
And when the rubber asphalt composite macadam seal coat is waterproof, the rubber asphalt composite macadam seal coat is qualified.
Preferably, the
And the compaction degree of the high-elasticity rubber asphalt composite gravel seal is qualified.
Preferably, the
And in the process, the void ratio of the high-elasticity rubber asphalt composite gravel seal is qualified.
Compared with the prior art, the invention provides a three-in-one detection method for a high-elasticity rubber asphalt composite macadam seal layer, which has the following beneficial effects:
(1) the invention provides a high-elasticity rubber asphalt composite macadam seal three-in-one detection method, which can solve the problem that the waterproofness, density and porosity of the high-elasticity rubber asphalt composite macadam seal cannot be detected at present, has important significance for field quality detection of the high-elasticity rubber asphalt composite macadam seal, can be used for detecting the waterproofness, density and porosity of other pavements such as slurry seals, cement concrete and the like, and has a wide application range;
(2) the method for detecting the waterproofness, which is provided by the patent of the invention, selects the position with more serious damage to the original pavement as a sampling point, eliminates the interference of the original pavement on the waterproofness, utilizes the lower hollow drill bit to drill into the original pavement to prevent the water from being transversely and quickly discharged, and can detect the water seepage coefficient of the real high-elasticity rubber asphalt composite crushed stone sealing layer;
(3) according to the method for filling the high-elasticity rubber asphalt at the bottom of the core sample before the core sample is proposed, the bottom of the core sample is firmly adhered by utilizing the high viscosity of the high-elasticity rubber asphalt, so that the particle falling phenomenon is effectively prevented, and the real density and void ratio can be detected subsequently;
(4) the invention combines the characteristics of different performance detection of the high-elasticity rubber asphalt composite gravel seal, is different from the traditional single performance detection method, combines three performance detection methods of waterproofness, density and void ratio, and is buckled in a ring-to-ring manner, so that the continuous and integrated detection of different road performances is realized, each performance detection method is used for the detection of the current performance and is also used for the laying of subsequent performance detection, the problem that the different road performances of the traditional road cannot be detected at one time is solved, and the detection efficiency is greatly improved;
(5) according to the waterproof detection method disclosed by the invention, the lower hollow drill bit is used as the sealing device, so that the problems of insufficient sealing and material pollution during the bottom sealing of the traditional water seepage instrument are solved, the detection success rate is greatly improved, and the waterproof detection method is green and environment-friendly;
(6) the detection method provided by the invention has small damage to the core sample, and the use function of the high-elasticity rubber asphalt composite crushed stone seal after sampling can be ensured by backfilling the core sample;
(7) the method for detecting the on-site density of the high-elasticity rubber asphalt composite crushed stone green seal layer, which is provided by the invention, can be combined with the standard density of an indoor high-elasticity rubber asphalt composite crushed stone seal layer to obtain the on-site compactness of the high-elasticity rubber asphalt seal layer, so that important index reference is provided for on-site construction quality evaluation.
The invention can realize one-time detection of three indexes of waterproofness, density and void ratio, has high detection efficiency, solves the problem which cannot be solved by the traditional method, and has great significance for the development of the high-elasticity rubber asphalt composite macadam seal technology in China.
Drawings
FIG. 1 is a three-in-one detection flow chart;
FIG. 2 is a front view of a hollow drill bit configuration;
FIG. 3 is a sectional view of the upper hollow drill bit structure;
fig. 4 is an exploded view of the lower hollow drill structure.
Reference numbers in the figures: the pitch drill bit comprises an upper hollow drill bit 1, a lower hollow drill bit 2, a port 1-1, a thread groove 1-2, a thread extending end 2-1, an outer wall 2-2, a clamping plate 2-3, a clamping groove 2-4, a diamond blade 2-5 and a pitch filling port 2-6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments, which can be derived from the embodiments given in the present patent by a person skilled in the art, are within the scope of the present patent.
The invention is further described with reference to the following drawings and detailed description:
example one
Referring to fig. 1, a three-in-one detection flow chart according to an embodiment of the present invention includes the following steps:
1. selecting a sampling point;
2. detecting the waterproofness;
3. detecting the density;
4. detecting the void ratio;
5. repeat S to the remaining sample points2-S4Calculating to obtain the field water seepage coefficient of the high-elasticity rubber asphalt composite macadam seal layer
Degree of in situ compaction
And in situ porosity
Referring to fig. 2-4, the hollow drill bit according to the embodiment of the present invention includes an upper hollow drill bit 1 and a lower hollow drill bit 2, the upper hollow drill bit 1 includes a connector 1-1 and a thread groove 1-2, the connector 1-1 is located at the top of the upper hollow drill bit 1 and is adapted to be sleeved on a core drilling sampler, the thread groove 1-2 is located at the bottom of the upper hollow drill bit 1 and is adapted to be connected to the lower hollow drill bit 2, the lower hollow drill bit 2 includes a thread extension end 2-1, an outer wall 2-2, a clamping plate 2-3, a clamping groove 2-4, a diamond blade 2-5 and an asphalt filling port 2-6, the lower hollow drill bit 2 can be divided into two parts by using the clamping plate 2-3 and the clamping groove 2-4, one part of the clamping plate 2-3 extends along the outer wall 2-2 for a certain length, and the other part of the clamping groove 2-4, the clamping plate 2-3 is matched with the clamping groove 2-4, the thread extending end 2-1 is located at the top of the lower hollow drill bit 2, 4 diamond blades 2-5 are installed along the bottom of the lower hollow drill bit 2, the asphalt filling opening 2-6 is formed in the inner side of the thread extending end 2-1 and vertically penetrates through the lower hollow drill bit 2, asphalt is filled through an asphalt pipe, the bottom of a core sample is bonded, the core sample is prevented from scattering when the lower hollow drill bit 2 is lifted out, the lower hollow drill bit 2 is 5cm in height, and the diamond blades 2-5 are 1cm in height.
When the three-in-one detection of the high-elasticity rubber asphalt composite macadam seal layer is carried out, the method comprises the following steps:
S1: selecting a sampling point, and selecting 3 places with serious damage conditions of the original road surface as waterproof detection sampling points of the high-elasticity rubber asphalt composite crushed stone seal twenty-four hours after the high-elasticity rubber asphalt composite crushed stone seal is started;
S2: the waterproof performance is detected, the broom is used for sweeping the broken stone and sundries loosened on the surface of the high-elasticity rubber asphalt composite broken stone sealing layer, the interface 1-1 is used for installing a core drilling sampler on the hollow drill bit, the core drilling sampler is used for drilling the hollow drill bit into the high-elasticity rubber asphalt composite broken stone sealing layer until the diamond blade 2-5 is submerged into the roadbed or the original pavement, the drilling is stopped, the thread groove 1-2 and the thread extension end 2-1 are used for detaching the upper hollow drill bit 1, the water seepage instrument is arranged on the lower hollow drill bit 2, the water seepage instrument is pressed on the lower hollow drill bit 2 by applying pressure, then the counter weight is added to prevent pressure water from flowing out from the space between the base and the pavement, the switch and the exhaust hole are closed, the scale of more than 100mL is filled into the measuring cylinder, then the switch and the exhaust hole are opened, so that the air in the bottom of the water seepage instrument flows out under the water, and the water surface descending, the bubbles at the bottom of the water seeper are completely discharged by using the double-hand light pressure water seeper, when water is smoothly discharged from the air vent, the switch and the air vent are closed, water is injected into the vector cylinder to 100mL scale again, and the switch is openedWhen the water surface drops to 100mL scale, starting a stopwatch immediately to start timing, recording the water volume immediately after timing for 3min, and ending the test; when the water level is lowered to 500mL within 3min after the timing, immediately recording the time when the water level is lowered to 500mL, ending the test, starting a stopwatch to time and test the water seepage amount within 3min when the water level cannot be lowered to 500mL scale within 3min after a switch is opened, and ending the test, wherein in the test process, if water seeps out from the base and the lower hollow drill bit 2, the sealing between the base and the lower hollow drill bit 2 is poor, the test result is invalid, and selecting a position nearby along the width direction at the same longitudinal position, and repeating the steps;
according to the formula
Wherein, Cw-water permeability coefficient, mL/min; v. of1-amount of water at first time of metering, mL; v. of2-amount of water at second time of timing, mL; t is1-the time of the first timing, s; t is2-a second timed time, s;
calculating the water permeability coefficient C of the 1 st pointw1；
S3: density detection, water resistance detection, taking down the water seepage instrument, wiping water stains on the surface of the sampling point by using a cleaning cloth, drying the surface of the sampling point by using a high-power electric blower, filling high-elastic rubber asphalt into the bottom of the core sample through the asphalt filling openings 2-6, and recording the quality M of the filled high-elastic rubber asphalt3When the high-elastic rubber asphalt is cooled, the lower hollow drill bit 2 and the core sample are lifted out of the high-elastic rubber asphalt composite broken stone seal layer, the bottom cover is taken out to seal the lower hollow drill bit 2, the core sample is dried by a high-power blower for 50-60min, and when the core sample is cooled to the outdoor temperature, the core sample is placed on an electronic scale to be weighed to obtain the weight MDry matterAccording to the formula
MCore＝MDry matter-M1-M2-M3
Wherein M isCore-the oven-dried mass of the core sample, Kg; m1Lower hollow drill bit2, Kg; m2-bottom cover mass, Kg; m3-the mass of the high-elastic rubberized asphalt poured, Kg;
calculating to obtain the drying mass M of the core sampleCorePlacing the water seepage instrument on the lower hollow drill bit 2, compacting by using a balancing weight, adding water into the measuring cylinder until the height of the exhaust pipe is consistent with that of the liquid level of the measuring cylinder, stopping adding water, and recording the liquid level readings H of the exhaust pipe and the measuring cylinder at the moment1、H2And volume V of water added1According to the formula
wherein, rho-core apparent density, Kg/m3；VCoreCore sample comprising the volume of closed pores, m3；S1Cross-sectional area of exhaust pipe, m2；S2Cross-sectional area of graduated cylinder, m2；h1-fast flow tube length, m; s3Cross-sectional area of the flow tube, m2；h2-height of the bottom cavity, m; r-radius of the bottom of the cavity at the bottom, m; r-radius of upper bottom of cavity at bottom, m; h3The height, m, of the lower hollow drill bit 2; s3Cross-sectional area of lower hollow drill 2, m2；
Calculating to obtain the density rho of the 1 st point core sample1；
S4: detecting the porosity, removing the water seepage instrument and the bottom cover after the density detection is finished, wiping water stains of the water seepage instrument and the lower hollow drill bit 2 by using a cleaning cloth, drying by using a high-power blower, putting the water seepage instrument on the lower hollow drill bit 2 again, applying pressure to press the water seepage instrument on the lower hollow drill bit 2, adding a balance weight into the measuring cylinder, and adding water until the height of the exhaust pipe reaches H again1Record the volume V of water added at this time2According to the formula
ΔV＝V1-V2And
obtaining the void ratio V of the 1 st point core sampleV1；
S5: repeat S to the remaining sample points2-S4According to the formula
wherein, Cwi-water permeability coefficient at point i, mL/min; rhoiCore sample density at the ith point, kg/m3；ρa-standard density of high-elastic rubber asphalt composite macadam seal coat, kg/m3；
Calculating to obtain the field water seepage coefficient of the high-elasticity rubber asphalt composite macadam seal layer
Degree of in situ compaction
And in situ porosity
After all indexes are detected, the lower hollow drill bit 2 can be disassembled by using the clamping plate 2-3 and the clamping groove 2-4 to obtain an internal core sample, the core sample is backfilled, high-elasticity rubber asphalt and fine-grain-size crushed stone are filled in the core sample, and the core sample is rolled for 4 times by using a hand-held rolling machine to ensure the pavement performance of the high-elasticity rubber asphalt composite crushed stone sealing layer.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A three-in-one detection method for a high-elasticity rubber asphalt composite macadam seal coat is characterized by comprising the following steps:
S1: selecting a sampling point;
S2: detecting the waterproofness;
S3: detecting the density;
S4: detecting the void ratio;
S5: repeat S to the remaining sample points2-S4Calculating to obtain the field water seepage coefficient of the high-elasticity rubber asphalt composite macadam seal layer
Degree of in situ compaction
And in situ porosity
The waterproof performance detection method relates to a device comprising a water seepage instrument, and comprises the following specific detection steps:
A1: firstly, preparing before waterproof performance detection, after the preparation, starting waterproof performance detection, drilling a hollow drill bit into the high-elasticity rubber asphalt composite gravel seal until the hollow drill bit is submerged into a roadbed or an original road surface, stopping drilling, and detaching an upper hollow drill bit;
A2: placing a water seepage instrument on the lower hollow drill bit, adding a balance weight to ensure that no gap exists between the lower hollow drill bit and the water seepage instrument, and detecting the waterproof performance of the high-elasticity rubber asphalt composite gravel seal layer by using the water seepage instrument according to the specification to obtain the water seepage coefficient Cw；
The density detection method comprises the following specific detection steps:
B1: the water resistance is detectedAfter that, the preparation work before the density detection is carried out;
B2: pouring high-elastic rubber asphalt into the bottom of the core sample through an asphalt pouring opening, and recording the mass M of the poured high-elastic rubber asphalt3After the high-elastic rubber asphalt is cooled, lifting the lower hollow drill bit and the core sample out of the high-elastic rubber asphalt composite broken stone sealing layer, taking out the bottom cover to seal the lower hollow drill bit, drying the core sample by using a high-power blower for 50-60 min;
B3: when the core sample is cooled to the outdoor temperature, the core sample is placed on an electronic scale to be weighed to obtain the weight MDry matterAccording to the formula
MCore＝MDry matter-M1-M2-M3
Wherein M isCore-the oven-dried mass of the core sample, Kg; m1-the mass of the lower hollow drill, Kg; m2-bottom cover mass, Kg; m3-the mass of the high-elastic rubberized asphalt poured, Kg;
calculating to obtain the drying mass M of the core sampleCore；
B4: placing the water seepage instrument on a lower hollow drill bit, compacting by using a balancing weight, adding water into the measuring cylinder until the height of the exhaust pipe is consistent with that of the liquid level of the measuring cylinder, stopping adding water, and recording the liquid level readings H of the exhaust pipe and the measuring cylinder at the moment1、H2And volume V of water added1According to the formula
wherein, rho-core apparent density, Kg/m3；VCoreCore sample comprising the volume of closed pores, m3；S1Cross-sectional area of exhaust pipe, m2；S2Measuring cylinder crossCross sectional area, m2；h1-fast flow tube length, m; s3Cross-sectional area of the flow tube, m2；h2-height of the bottom cavity, m; r-radius of the bottom of the cavity at the bottom, m; r-radius of upper bottom of cavity at bottom, m; h3-the height of the lower hollow drill bit, m; s3Cross-sectional area of lower hollow drill bit, m2；
Calculating to obtain the density rho of the core sample;
the detection method of the void ratio comprises the following specific steps:
C1: after the density detection is finished, carrying out preparation work of void ratio detection;
C2: adding water into the measuring cylinder until the height of the exhaust pipe reaches H again1Record the volume V of water added at this time2According to the formula
ΔV＝V1-V2And
obtaining the void ratio V of the core sampleV。
2. The method of claim 1, wherein S is the detection method of the three-in-one of the high-elasticity rubber asphalt composite gravel seal1The method is characterized in that a sampling point is selected, and after the high-elasticity rubber asphalt composite crushed stone seal is started for twenty-four hours, 3 places with serious damage conditions on the original road surface are selected as the high-elasticity rubber asphalt composite crushed stone seal waterproofness detection sampling point.
3. The method as claimed in claim 1, wherein A is a three-in-one detection method for the high-elasticity rubber asphalt composite macadam seal layer1Before the waterproof performance is detected, the broom is used to sweep the loose gravels and sundries on the surface of the high-elasticity rubber asphalt composite gravels sealing layer.
4. The method of claim 1, wherein the rubber-asphalt composite high-elasticity rubber-asphalt seal three-in-one detection method, it is characterized in that the hollow drill bit comprises an upper hollow drill bit and a lower hollow drill bit, the upper hollow drill bit comprises an interface and a thread groove, the connector is positioned at the top of the upper hollow drill bit, the thread groove is positioned at the bottom of the upper hollow drill bit, the lower hollow drill bit comprises a thread extending end, an outer wall, a diamond blade and an asphalt filling opening, the lower hollow drill bit is divided into two parts, one part extends out along the outer wall to form a clamping plate, the other part is provided with a clamping groove along the outer wall, the clamping plate is matched with the clamping groove, the extending end of the thread is positioned at the top of the lower hollow drill bit, the asphalt filling port is arranged on the inner side of the extending end of the thread and vertically penetrates through the lower hollow drill bit, the lower hollow drill bit is 5-6cm in height, and the diamond blade is 1-2cm in height.
5. The method as claimed in claim 1, wherein B is a three-in-one detection method of the high-elasticity rubber asphalt composite macadam seal layer1And (3) preparing before density detection, taking down the water seepage instrument, wiping water stains on the surface of the sampling point by using a cleaning cloth, and drying the surface of the sampling point by using a high-power electric hair drier.
6. The method as claimed in claim 1, wherein the step C comprises a step of inspecting the rubber-asphalt mixture of the high-elasticity rubber and the high-elasticity rubber-asphalt mixture with a sealing layer1And preparing for detecting the medium porosity, namely taking down the water seepage instrument and the bottom cover, wiping water stains of the water seepage instrument and the lower hollow drill bit by using a cleaning cloth, drying by using a high-power blower, applying pressure again to press the water seepage instrument on the lower hollow drill bit, and adding a balance weight.
7. The method as claimed in claim 1, wherein S is a high-elasticity rubber-asphalt composite macadam seal three-in-one detection method5In
And
the calculation formula of (2) is as follows:
wherein, Cwi-water permeability coefficient at point i, mL/min; rhoiCore sample density at the ith point, kg/m3；ρa-standard density of high-elastic rubber asphalt composite macadam seal coat, kg/m3。
8. The method as claimed in claim 6, wherein the three-in-one detection method for the high-elasticity rubber asphalt composite macadam seal layer is characterized in that
And when the rubber asphalt composite macadam seal coat is waterproof, the rubber asphalt composite macadam seal coat is qualified.
9. The method as claimed in claim 6, wherein the three-in-one detection method for the high-elasticity rubber asphalt composite macadam seal layer is characterized in that
And the compaction degree of the high-elasticity rubber asphalt composite gravel seal is qualified.
10. The method as claimed in claim 6, wherein the three-in-one detection method for the high-elasticity rubber asphalt composite macadam seal layer is characterized in that
And in the process, the void ratio of the high-elasticity rubber asphalt composite gravel seal is qualified.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779462A (en) * | 1985-07-23 | 1988-10-25 | Commissariat A L'energie Atomique | Apparatus for the automatic measurement of the apparent density of the mud in a liquid, system for the automatic measurement of the ponsar index of such a mud using the apparatus and process for measuring said index |
| CA2377416A1 (en) * | 1999-06-25 | 2001-01-04 | Ali Regimand | Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods |
| CN102928324A (en) * | 2012-10-23 | 2013-02-13 | 华南理工大学 | Method for testing water permeability inside asphalt pavement after drilling |
| CN103728158A (en) * | 2013-12-19 | 2014-04-16 | 广东省农业科学院农业资源与环境研究所 | Collecting device of different levels of underground water |
| CN104849196A (en) * | 2015-06-05 | 2015-08-19 | 合肥工业大学 | Device and method for measuring water permeability coefficient of asphalt pavement |
| CN205562198U (en) * | 2016-05-03 | 2016-09-07 | 葛洲坝集团试验检测有限公司 | A auxiliary device that is used for energy -conserving structure drill core of outer wall to take a sample |
| CN106442229A (en) * | 2016-10-20 | 2017-02-22 | 中国水利水电科学研究院 | Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method |
| CN106525689A (en) * | 2016-12-02 | 2017-03-22 | 东南大学 | Water seepage meter and method for measuring large gap pavement structure multidirectional permeability coefficients |
| CN106566469A (en) * | 2016-04-11 | 2017-04-19 | 张超 | Ultra-thin asphalt film for engineering interface treatment and using method for ultra-thin asphalt film |
| CN107513989A (en) * | 2017-09-14 | 2017-12-26 | 中建路桥集团有限公司 | Sand replacement method Subgrade Compaction detects rotary digging drawing out soil equipment |
| CN110130194A (en) * | 2019-06-25 | 2019-08-16 | 广州肖宁道路工程技术研究事务所有限公司 | A kind of bituminous pavement integrated evaluating method and device |
| CN110530667A (en) * | 2019-08-31 | 2019-12-03 | 厦门语瑶贸易有限公司 | A kind of sub-surface compactness detection device for filling up detection site |
| CN111735733A (en) * | 2020-06-05 | 2020-10-02 | 长江水利委员会长江科学院 | Method for obtaining natural density of loose slag charge in waste slag yard |
| CN112964618A (en) * | 2021-02-05 | 2021-06-15 | 泗洪县城市建设投资经营集团有限公司 | On-site detection method for high-elasticity rubber asphalt composite broken stone seal |
-
2021
- 2021-02-05 CN CN202110162886.XA patent/CN112881263B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779462A (en) * | 1985-07-23 | 1988-10-25 | Commissariat A L'energie Atomique | Apparatus for the automatic measurement of the apparent density of the mud in a liquid, system for the automatic measurement of the ponsar index of such a mud using the apparatus and process for measuring said index |
| CA2377416A1 (en) * | 1999-06-25 | 2001-01-04 | Ali Regimand | Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods |
| AU5757600A (en) * | 1999-06-25 | 2001-01-31 | Instrotek, Inc. | Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods |
| US20030209071A1 (en) * | 1999-06-25 | 2003-11-13 | Ali Regimand | Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods |
| US6668647B1 (en) * | 1999-06-25 | 2003-12-30 | Instrotek, Inc. | Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods |
| CN102928324A (en) * | 2012-10-23 | 2013-02-13 | 华南理工大学 | Method for testing water permeability inside asphalt pavement after drilling |
| CN103728158A (en) * | 2013-12-19 | 2014-04-16 | 广东省农业科学院农业资源与环境研究所 | Collecting device of different levels of underground water |
| CN104849196A (en) * | 2015-06-05 | 2015-08-19 | 合肥工业大学 | Device and method for measuring water permeability coefficient of asphalt pavement |
| CN106566469A (en) * | 2016-04-11 | 2017-04-19 | 张超 | Ultra-thin asphalt film for engineering interface treatment and using method for ultra-thin asphalt film |
| CN205562198U (en) * | 2016-05-03 | 2016-09-07 | 葛洲坝集团试验检测有限公司 | A auxiliary device that is used for energy -conserving structure drill core of outer wall to take a sample |
| CN106442229A (en) * | 2016-10-20 | 2017-02-22 | 中国水利水电科学研究院 | Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method |
| CN106525689A (en) * | 2016-12-02 | 2017-03-22 | 东南大学 | Water seepage meter and method for measuring large gap pavement structure multidirectional permeability coefficients |
| CN107513989A (en) * | 2017-09-14 | 2017-12-26 | 中建路桥集团有限公司 | Sand replacement method Subgrade Compaction detects rotary digging drawing out soil equipment |
| CN110130194A (en) * | 2019-06-25 | 2019-08-16 | 广州肖宁道路工程技术研究事务所有限公司 | A kind of bituminous pavement integrated evaluating method and device |
| CN110530667A (en) * | 2019-08-31 | 2019-12-03 | 厦门语瑶贸易有限公司 | A kind of sub-surface compactness detection device for filling up detection site |
| CN111735733A (en) * | 2020-06-05 | 2020-10-02 | 长江水利委员会长江科学院 | Method for obtaining natural density of loose slag charge in waste slag yard |
| CN112964618A (en) * | 2021-02-05 | 2021-06-15 | 泗洪县城市建设投资经营集团有限公司 | On-site detection method for high-elasticity rubber asphalt composite broken stone seal |
Non-Patent Citations (3)
| Title |
|---|
| CASEY D.KENNEDY 等: "Comparison od darcian flux calculation and seepage meter measurement in a sandy streambed in north carolina", 《WATER RESOOURCES RESEARCH》 * |
| 周洪燕 等: "《土木工程材料》", 31 August 2018, 北京理工大学出版社 * |
| 黄学文 等: "高速公路侧向安全槽技术的试验应用", 《公路》 * |
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Denomination of invention: A Three in One Testing Method for High Elasticity Rubber Asphalt Composite Crushed Stone Sealing Layer Effective date of registration: 20230628 Granted publication date: 20220412 Pledgee: Sihong Hongyuan Public Assets Management Co.,Ltd. Pledgor: Sihong County Urban Construction Investment Management Group Co.,Ltd. Registration number: Y2023320000347 |