CN103048173A - Method for making asphalt mixture test piece and testing internal water seepage performance thereof - Google Patents
Method for making asphalt mixture test piece and testing internal water seepage performance thereof Download PDFInfo
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- CN103048173A CN103048173A CN2012105386875A CN201210538687A CN103048173A CN 103048173 A CN103048173 A CN 103048173A CN 2012105386875 A CN2012105386875 A CN 2012105386875A CN 201210538687 A CN201210538687 A CN 201210538687A CN 103048173 A CN103048173 A CN 103048173A
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Abstract
The invention discloses methods for making an asphalt mixture test piece and testing an internal water seepage performance thereof. The method for making the test piece comprises: (1) using a steel plate as a bed die, and installing a column-shaped steel rod on the surface central position of the bed die as a mandrel, wherein the column-shaped steel rod and the cylindrical form hole have same dimension; (2) sleeving a side die having same height with the test piece on the bed die and the side surfaces of the mandrel for forming the test piece; and (3) making a plate or block-shaped test piece with a hole. The testing method comprises: drawing a circle on the center of the upper top face on the asphalt mixture test piece; and making a water seepage test by a pavement water seepage instrument. The product provides a method for making a plate or block-shaped test piece with a hole, the test piece has a simple structure, and the making method is simple. The invention provides an asphalt mixture test piece, and a method for detecting the water seepage performance on the internal different depth parts by the test piece. The methods of the invention provide a scientific basis for verifying the performances of the designed asphalt mixture, and enhance the water damage resistant performance of a bituminous paving.
Description
Technical field
The present invention relates to a kind of detection technique field of pavement material permeability performance, especially a kind of making of bitumen mixture specimen tabular, with holes and the method for testing of inner permeability performance thereof.
Background technology
Adopt the bitumen mixture specimen of moulding in the industry CT scanning room, its internal voids along the distribution of the test specimen degree of depth as described in Figure 1.The result shows that the space of test specimen inside presents stronger variability along the distribution of the test specimen degree of depth.Generally speaking, the space quantity of test specimen top and bottom is obviously more than the middle part.
T0730-2011 " asphalt water penetration test " method adopts the pavement seepage instrument to measure the infiltration coefficient of the bitumen mixture specimen of rolling method making in existing " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).Test findings only reflects the permeability performance of the following certain depth in test specimen surface.Because the variability that the test specimen internal voids distributes along depth direction, existing method can not reflect the permeability performance of test specimen middle part and bottom.Test findings is applied to verify the performance of the asphalt of design, and is not representative.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of existing T0730-2011 " asphalt water penetration test " method, the making of bitumen mixture specimen and the method for testing of inner permeability performance thereof are provided, the foundation of science is provided for the performance of verifying the asphalt that designs, improve the bituminous pavement anti-water damage property, concrete technical scheme is as follows.
The method for making of bitumen mixture specimen, it comprises the steps:
(1) steel plate of using long 300mm, wide 300mm, thick 5mm ~ 10mm is as bed die, and the measure-alike right cylinder steel rod member of the cylindrical hole of installing and need to arranging in the centre of surface position of bed die is as core;
(2) put limit mould with the test specimen equal height at specimen molding with bed die and core side; Make plate-like test specimen with holes according to T0703-2011 " bitumen mixture specimen method for making (rolling method) " in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
The number of the described core of further, installing in the centre of surface position of bed die is more than 1.
Further, the diameter of cylindrical hole is 2 ~ 30mm, and the degree of depth is 0.2 ~ 0.8 times of specimen thickness.
Further, the number of described cylindrical hole is 2, and 2 cylindrical holes are symmetricly set on the central shaft both sides of test specimen, and two cylindrical hole center distance are 70 ~ 120mm; And central shaft is crossed the upper end face center of test specimen.
Further, the number of described cylindrical hole is 1, and the central shaft of cylindrical hole center and test specimen is overlapping, and central shaft is crossed the upper end face center of test specimen.
The method of testing of the inside permeability performance of the bitumen mixture specimen that described method for making makes, it comprises the steps:
1. draw a circle with the center of the upper end face of described bitumen mixture specimen, described cylindrical hole is positioned at this circle;
2. adopt the pavement seepage instrument to carry out water penetration test: at first, the plastic ring of pavement seepage instrument to be placed on the bitumen mixture specimen band hole surface, so that the plastic ring inboard places step 1. on the described circle; Draw the outer ring in the plastic ring outside, with plasticine encapsulation process is carried out with the part of interior surface except cylindrical hole in the outer ring, water creep appearance is placed on plasticine surface after the sealing, the ballast steel ring is installed on the water creep appearance, flow out between water creep appearance bottom and plasticine surface to prevent press water;
3. close the water creep appearance switch, fill with water in graduated cylinder, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air, closing switch is filled with water again in graduated cylinder;
4. open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till;
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.
Compared with prior art, the present invention has following advantage and beneficial effect:
(1) compare with existing rolling forming method, the invention provides a kind of method for making of plate-like bitumen mixture specimen with holes, test specimen is simple in structure, and method for making is easy;
(2) compare with T0730-2011 " asphalt water penetration test " method in existing " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011), the invention provides bitumen mixture specimen and can utilize this test specimen to carry out the detection method of inner different depth place permeability performance.For the performance of the asphalt of checking design provides the foundation of science, improve the bituminous pavement anti-water damage property.
Description of drawings
Fig. 1 is that indoor moulding bitumen mixture specimen internal voids is along the distribution plan of the test specimen degree of depth.
Fig. 2 is with the structural representation of the plate-like bitumen mixture specimen of a cylindrical hole in the example.
Fig. 3 is with the structural representation of the plate-like bitumen mixture specimen of two cylindrical holes in the example.
Fig. 4 is plate-like specimen molding bed die, the core mold structure figure that 1 hole is set in the example.
Fig. 5 is plate-like specimen molding bed die, the core mold structure figure that 2 holes are set in the example.
Embodiment
Below in conjunction with accompanying drawing and example the present invention is described in further detail, but enforcement of the present invention and protection domain are not limited to this.
Such as Fig. 2 or Fig. 3, be the structural representation of plate-like bitumen mixture specimen with holes, plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 50 ~ 100mm.Drawing 1 diameter in 1 center, test specimen surface is 150mm circle 2.1 or 2 cylindrical hole 3:1 Kong Ze are set in the circle place 4 places, the center of circle; 2 Kong Ze 4 are symmetrical arranged as axis of symmetry take the center of circle, and center distance is 70 ~ 120mm.The diameter of cylindrical hole is 2 ~ 30mm, and the degree of depth is 0.2 ~ 0.8 times of specimen thickness.
Such as Fig. 4, the method for making of plate-like bitumen mixture specimen with holes: the plate-like specimen molding structure of bed die and core that 1 hole is set: use the steel plate of long 300mm, wide 300mm, rear 5mm ~ 10mm as bed die, 1 measure-alike right cylinder steel rod member 6 with the hole that needs setting is installed, as core in 5 centers, surface of bed die.
Such as Fig. 5, the method for making of plate-like bitumen mixture specimen with holes: the plate-like specimen molding structure of bed die and core that 2 holes are set: use the steel plate of long 300mm, wide 300mm, rear 5mm ~ 10mm as bed die, on the surface 5 of bed die symmetrical install 2 with the position in the hole that needs setting, measure-alike right cylinder steel rod member 6, as core.
Put limit mould with the test specimen equal height at specimen molding with bed die and core side.Make plate-like test specimen with holes according to T0703-2011 " bitumen mixture specimen method for making (rolling method) " in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
(1) structure of test specimen
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 50mm.Drawing 1 diameter in 1 center, test specimen surface is 150mm circle 2.1 cylindrical hole 3 is set in the circle, places 4 places, the center of circle.The diameter of cylindrical hole is 2mm, and the degree of depth is 0.2 times of specimen thickness.
(2) method for making of plate-like bitumen mixture specimen with holes
The structure of bed die and core: as bed die, the measure-alike right cylinder steel rod member 6 in 1 hole that arranges with needs is installed, as core in 5 centers, surface of bed die with the steel plate of long 300mm, wide 300mm, thick 10mm.
Put limit mould with the test specimen equal height at specimen molding with bed die and core side.According to T0703-2011 " bitumen mixture specimen method for making (rolling method) " moulding plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Adopt the pavement seepage instrument to carry out water penetration test.At first, the plastic ring of pavement seepage instrument being placed on the band hole surface, is on the 150mm circle 2 so that the plastic ring inboard places diameter.Divide the plastic ring outside to draw circle with chalk.With plasticine encapsulation process is carried out with the part of interior surface except the hole in the outer ring.Water creep appearance is placed on the strip sealant surface, the ballast steel ring is installed, flow out between base and road surface to prevent press water.
Close the water creep appearance switch, in graduated cylinder, fill with water, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air.Closing switch is filled with water again in graduated cylinder.
Open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till.
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.Test findings sees Table 1.
(1) structure of test specimen
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.Drawing 1 diameter in 1 center, test specimen surface is 150mm circle 2.1 cylindrical hole 3 is set in the circle, places 4 places, the center of circle.The diameter of cylindrical hole is 30mm, and the degree of depth is 0.8 times of specimen thickness.
(2) method for making of plate-like bitumen mixture specimen with holes
The structure of bed die and core: as bed die, the measure-alike right cylinder steel rod member 6 in 1 hole that arranges with needs is installed, as core in 5 centers, surface of bed die with the steel plate of long 300mm, wide 300mm, thick 5mm.
Put limit mould with the test specimen equal height at specimen molding with bed die and core side.According to T0703-2011 " bitumen mixture specimen method for making (rolling method) " moulding plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Adopt the pavement seepage instrument to carry out water penetration test.At first, the plastic ring of pavement seepage instrument being placed on the band hole surface, is on the 150mm circle 2 so that the plastic ring inboard places diameter.Divide the plastic ring outside to draw circle with chalk.With plasticine encapsulation process is carried out with the part of interior surface except the hole in the outer ring.Water creep appearance is placed on the strip sealant surface, the ballast steel ring is installed, flow out between base and road surface to prevent press water.
Close the water creep appearance switch, in graduated cylinder, fill with water, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air.Closing switch is filled with water again in graduated cylinder.
Open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till.
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.Test findings sees Table 1.
(1) structure of plate-like bitumen mixture specimen with holes
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.Drawing 1 diameter in 1 center, test specimen surface is 150mm circle 2.
2 cylindrical holes 3 are set in the circle, and 4 are symmetrical arranged as axis of symmetry take the center of circle, and center distance is 70mm.The diameter of 2 cylindrical holes is 2mm, and the degree of depth is 0.2 times of specimen thickness.
(2) method for making of plate-like bitumen mixture specimen with holes
Specimen molding is with the structure of bed die and core: with the steel plate of long 300mm, wide 300mm, thick 5mm as bed die, on the surface 5 of bed die symmetrical install 2 with the position in hole that need to setting, measure-alike right cylinder steel rod member 6, as core.
Put limit mould with the test specimen equal height at specimen molding with bed die and core side.According to T0703-2011 " bitumen mixture specimen method for making (rolling method) " moulding plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Adopt the pavement seepage instrument to carry out water penetration test.At first, the plastic ring of pavement seepage instrument being placed on the band hole surface, is on the 150mm circle 2 so that the plastic ring inboard places diameter.Divide the plastic ring outside to draw circle with chalk.With plasticine encapsulation process is carried out with the part of interior surface except the hole in the outer ring.Water creep appearance is placed on the strip sealant surface, the ballast steel ring is installed, flow out between base and road surface to prevent press water.
Close the water creep appearance switch, in graduated cylinder, fill with water, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air.Closing switch is filled with water again in graduated cylinder.
Open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till.
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.Test findings sees Table 1.
(1) structure of plate-like bitumen mixture specimen with holes
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.Drawing 1 diameter in 1 center, test specimen surface is 150mm circle 2.
2 cylindrical holes 3 are set in the circle, and 4 are symmetrical arranged as axis of symmetry take the center of circle, and center distance is 120mm.The diameter of 2 cylindrical holes is 30mm, and the degree of depth is 0.8 times of specimen thickness.
(2) method for making of plate-like bitumen mixture specimen with holes
Specimen molding is with the structure of bed die and core: with the steel plate of long 300mm, wide 300mm, thick 10mm as bed die, on the surface 5 of bed die symmetrical install 2 with the position in hole that need to setting, measure-alike right cylinder steel rod member 6, as core.
Put limit mould with the test specimen equal height at specimen molding with bed die and core side.According to T0703-2011 " bitumen mixture specimen method for making (rolling method) " moulding plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Adopt the pavement seepage instrument to carry out water penetration test.At first, the plastic ring of pavement seepage instrument being placed on the band hole surface, is on the 150mm circle 2 so that the plastic ring inboard places diameter.Divide the plastic ring outside to draw circle with chalk.With plasticine encapsulation process is carried out with the part of interior surface except the hole in the outer ring.Water creep appearance is placed on the strip sealant surface, the ballast steel ring is installed, flow out between base and road surface to prevent press water.
Close the water creep appearance switch, in graduated cylinder, fill with water, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air.Closing switch is filled with water again in graduated cylinder.
Open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till.
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.Test findings sees Table 1.
The bitumen mixture specimen water penetration test of comparative example's 1 conventional atresia
Plate-like test specimen according to T0703-2011 " bitumen mixture specimen method for making (rolling method) " moulding atresia in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).The test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.
The base plastic ring of pavement seepage instrument is placed the test specimen center, inboard and the outside along plastic ring draws circle respectively, with encapsulant encapsulation process is carried out on the road surface between outer ring and the inner ring, water creep appearance is placed on sealant surface between described outer ring and the inner ring, the ballast steel ring is installed, is flowed out between base and road surface to prevent press water.
Close the water creep appearance switch, in graduated cylinder, fill with water, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air.Closing switch is filled with water again in graduated cylinder.
Open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till.
Calculate infiltration coefficient with following formula:
C
WBe infiltration coefficient; T is timing time.Test findings sees Table 1.
Illustrate: above-described embodiment 1 ~ embodiment 4, comparative example 1 all adopt the identical asphalt of technical feature.
The water penetration test result of the plate-like bitumen mixture specimen of table 1
By table 1 test findings as seen, along with the increase that the increasing of hole count, bore dia and the degree of depth are set, the gradually increase of infiltration coefficient.Illustrate with T0730-2011 " asphalt water penetration test " method in existing " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011) and compare, the invention provides the detection method of the inner different depth of bitumen mixture specimen place permeability performance.For the performance of the asphalt of checking design provides the foundation of science, improve the bituminous pavement anti-water damage property.
Claims (6)
1. the method for making of bitumen mixture specimen is characterized in that comprising the steps:
(1) steel plate of using long 300mm, wide 300mm, thick 5mm ~ 10mm is as bed die, and the measure-alike right cylinder steel rod member of the cylindrical hole of installing and need to arranging in the centre of surface position of bed die is as core;
(2) put limit mould with the test specimen equal height at specimen molding with bed die and core side; Make plate-like test specimen with holes according to T0703-2011 " bitumen mixture specimen method for making (rolling method) " in " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011).
2. the method for making of bitumen mixture specimen according to claim 1 is characterized in that the number of the described core installed in the centre of surface position of bed die is more than 1.
3. the method for making of bitumen mixture specimen according to claim 1, the diameter that it is characterized in that cylindrical hole is 2 ~ 30mm, the degree of depth is 0.2 ~ 0.8 times of specimen thickness.
4. the method for making of bitumen mixture specimen according to claim 1, the number that it is characterized in that described cylindrical hole is 2, and 2 cylindrical holes are symmetricly set on the central shaft both sides of test specimen, and two cylindrical hole center distance are 70 ~ 120mm; And central shaft is crossed the upper end face center of test specimen.
5. the method for making of bitumen mixture specimen according to claim 1, the number that it is characterized in that described cylindrical hole is 1, the central shaft of cylindrical hole center and test specimen is overlapping, and central shaft is crossed the upper end face center of test specimen.
6. the method for testing of the inside permeability performance of the bitumen mixture specimen that makes of each described method for making of claim 1~5 is characterized in that comprising the steps:
1. draw a circle with the center of the upper end face of described bitumen mixture specimen, described cylindrical hole is positioned at this circle;
2. adopt the pavement seepage instrument to carry out water penetration test: at first, the plastic ring of pavement seepage instrument to be placed on the bitumen mixture specimen band hole surface, so that the plastic ring inboard places step 1. on the described circle; Draw the outer ring in the plastic ring outside, with plasticine encapsulation process is carried out with the part of interior surface except cylindrical hole in the outer ring, water creep appearance is placed on plasticine surface after the sealing, the ballast steel ring is installed on the water creep appearance, flow out between water creep appearance bottom and plasticine surface to prevent press water;
3. close the water creep appearance switch, fill with water in graduated cylinder, then open switch, so that the water in the graduated cylinder flows downward, discharge water creep appearance sealed bottom space Air, closing switch is filled with water again in graduated cylinder;
4. open the water creep appearance switch, when treating that the 100mL scale of graduated cylinder is down in the underwater, start immediately manual time-keeping, when being down to the 500mL scale to the underwater till;
Calculate infiltration coefficient with following formula:
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Cited By (6)
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CN103196813A (en) * | 2013-04-28 | 2013-07-10 | 长安大学 | Evaluation method of road surface bituminous mixture separation degree |
CN104931331A (en) * | 2015-04-29 | 2015-09-23 | 长安大学 | Construction quality detection and evaluation method for asphalt pavement |
CN106872304A (en) * | 2017-01-20 | 2017-06-20 | 武汉理工大学 | Fine aggregate bitumen mixture specimen humidity health-preserving method |
CN108240958A (en) * | 2018-03-23 | 2018-07-03 | 沈阳建筑大学 | Bituminous paving water creep appearance and its application method under a kind of influence of dynamic water |
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 |
CN110346256A (en) * | 2018-04-03 | 2019-10-18 | 南京林业大学 | A kind of sealing device and method for the detection of bituminous pavement infiltration coefficient |
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Cited By (10)
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CN103196813A (en) * | 2013-04-28 | 2013-07-10 | 长安大学 | Evaluation method of road surface bituminous mixture separation degree |
CN103196813B (en) * | 2013-04-28 | 2014-11-19 | 长安大学 | Evaluation method of road surface bituminous mixture separation degree |
CN104931331A (en) * | 2015-04-29 | 2015-09-23 | 长安大学 | Construction quality detection and evaluation method for asphalt pavement |
CN106872304A (en) * | 2017-01-20 | 2017-06-20 | 武汉理工大学 | Fine aggregate bitumen mixture specimen humidity health-preserving method |
CN106872304B (en) * | 2017-01-20 | 2019-10-25 | 武汉理工大学 | Fine aggregate bitumen mixture specimen humidity health-preserving method |
CN108240958A (en) * | 2018-03-23 | 2018-07-03 | 沈阳建筑大学 | Bituminous paving water creep appearance and its application method under a kind of influence of dynamic water |
CN108240958B (en) * | 2018-03-23 | 2023-10-24 | 沈阳建筑大学 | Asphalt pavement water seepage instrument under action of moving water and application method thereof |
CN110346256A (en) * | 2018-04-03 | 2019-10-18 | 南京林业大学 | A kind of sealing device and method for the detection of bituminous pavement infiltration coefficient |
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 |
CN110130194B (en) * | 2019-06-25 | 2023-12-01 | 广州肖宁道路工程技术研究事务所有限公司 | Comprehensive evaluation method and device for asphalt pavement |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20211213 |