CN103048173B - The making of bitumen mixture specimen and the method for testing of inner permeability performance thereof - Google Patents
The making of bitumen mixture specimen and the method for testing of inner permeability performance thereof Download PDFInfo
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- CN103048173B CN103048173B CN201210538687.5A CN201210538687A CN103048173B CN 103048173 B CN103048173 B CN 103048173B CN 201210538687 A CN201210538687 A CN 201210538687A CN 103048173 B CN103048173 B CN 103048173B
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Abstract
The open making of bitumen mixture specimen of the present invention and the method for testing of inner permeability performance thereof, test specimen method for making comprises: (1) as bed die with steel plate, installs in the centre of surface position of bed die and needs the measure-alike right cylinder steel rod member of the cylindrical hole arranged as core; (2) overlap and test specimen mutually level limit mould with core side at specimen molding bed die; (3) plate-like test specimen with holes is made.Method of testing comprises: draw a circle with the center of the upper end face of described bitumen mixture specimen; Pavement seepage instrument is adopted to carry out water penetration test.Invention provides a kind of method for making of plate-like bitumen mixture specimen with holes, and test specimen structure is simple, and method for making is easy; The invention provides bitumen mixture specimen and this test specimen can be utilized to carry out the detection method of inner different depth place permeability performance.Performance for the asphalt of checking design provides the foundation of science, improves bituminous pavement anti-water damage property.
Description
Technical field
The present invention relates to a kind of detection technique field of pavement material permeability performance, the making of especially a kind of tabular, bitumen mixture specimen with holes and the method for testing of inner permeability performance thereof.
Background technology
Adopt bitumen mixture specimen shaping in industry CT scanning room, its internal voids along the test specimen degree of depth distribution as described in Figure 1.Result shows, the space of test specimen inside presents stronger variability along the distribution of the test specimen degree of depth.Generally, the void count of test specimen top and bottom is obviously more than middle part.
In existing " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011), T0730-2011 " asphalt water penetration test " method adopts pavement seepage instrument to measure the infiltration coefficient of the bitumen mixture specimen that rolling method makes.Test findings only reflects the permeability performance of the following certain depth of surface of test piece.Due to the variability that test specimen internal voids distributes along depth direction, existing method can not reflect the permeability performance of in the middle part of test specimen and bottom.Test findings is applied to the performance of the asphalt of checking design, not representative.
Summary of the invention
The object of the invention is the deficiency in order to overcome existing T0730-2011 " asphalt water penetration test " method, the method of testing of the making of bitumen mixture specimen and inner permeability performance thereof is provided, performance for the asphalt of checking design provides the foundation of science, improve 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) with the steel plate of long 300mm, wide 300mm, thick 5mm ~ 10mm as bed die, install in the centre of surface position of bed die and need the measure-alike right cylinder steel rod member of the cylindrical hole arranged as core;
(2) overlap and test specimen mutually level limit mould with core side at specimen molding bed die; Plate-like test specimen with holes is made according to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
Further, the number of the described core installed 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 crosses the upper end face center of test specimen.
Further, the number of described cylindrical hole is 1, and cylindrical hole center is overlapping with the central shaft of test specimen, and central shaft crosses 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 obtains, 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 pavement seepage instrument to carry out water penetration test: first, to be placed on bitumen mixture specimen foraminated surface by the plastic ring of pavement seepage instrument, make to be placed in plastic ring step 1. on described circle; Outer ring is drawn outside plastic ring, with plasticine, encapsulation process is carried out to the part of the surface within outer ring except cylindrical hole, water creep appearance is put plasticine surface after sealing, water creep appearance is installed ballast steel ring, flow out bottom water creep appearance and between plasticine surface to prevent press water;
3. close water creep appearance switch, fill water, then open switch, the water in graduated cylinder is flowed downward in graduated cylinder, discharge air in water creep appearance sealed bottom space, closing switch, fills water again in graduated cylinder;
4. open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater;
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.
Compared with prior art, the present invention has following advantage and beneficial effect:
(1) compared with existing rolling forming method, the invention provides a kind of method for making of plate-like bitumen mixture specimen with holes, test specimen structure is simple, and method for making is easy;
(2) compared with T0730-2011 " asphalt water penetration test " method in existing " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011), the invention provides bitumen mixture specimen and this test specimen can be utilized to carry out the detection method of inner different depth place permeability performance.Performance for the asphalt of checking design provides the foundation of science, improves bituminous pavement anti-water damage property.
Accompanying drawing explanation
Fig. 1 is the distribution plan of indoor shaping bitumen mixture specimen internal voids along the test specimen degree of depth.
Fig. 2 is the structural representation of the plate-like bitumen mixture specimen being with a cylindrical hole in example.
Fig. 3 is the structural representation of the plate-like bitumen mixture specimen being with two cylindrical holes in example.
Fig. 4 is the plate-like specimen molding bed die, the core mold structure figure that arrange 1 hole in example.
Fig. 5 is the plate-like specimen molding bed die, the core mold structure figure that arrange 2 holes in 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 thereto.
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 surface of test piece 1 center is 150mm circle 2.1 is arranged or 2 cylindrical hole 3:1 Kong Ze are placed in the center of circle 4 place in circle; 2 Kong Ze are with the center of circle 4 for axis of symmetry is symmetrical arranged, 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.
As Fig. 4, the method for making of plate-like bitumen mixture specimen with holes: the plate-like specimen molding bed die in 1 hole and the structure of core are set: with the steel plate of long 300mm, wide 300mm, rear 5mm ~ 10mm as bed die, the measure-alike right cylinder steel rod member 6 in the hole that 1 is arranged with needs is installed, as core in the center, surface 5 of bed die.
As Fig. 5, the method for making of plate-like bitumen mixture specimen with holes: the plate-like specimen molding bed die in 2 holes and the structure of core are set: with the steel plate of long 300mm, wide 300mm, rear 5mm ~ 10mm as bed die, on the surface 5 of bed die, symmetry installs the position in the hole that 2 are arranged with needs, measure-alike right cylinder steel rod member 6, as core.
With test specimen mutually level limit mould on specimen molding bed die with core side cover.Plate-like test specimen with holes is made according to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
The making of the plate-like bitumen mixture specimen of embodiment 1 with 1 hole and the method for testing of inner permeability performance thereof
(1) structure of test specimen
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 50mm.Drawing 1 diameter in surface of test piece 1 center is 150mm circle 2.1 cylindrical hole 3 is set in circle, is placed in the center of circle 4 place.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: with the steel plate of long 300mm, wide 300mm, thick 10mm as bed die, install in the center, surface 5 of bed die 1 with the measure-alike right cylinder steel rod member 6 needing the hole arranged, as core.
With test specimen mutually level limit mould on specimen molding bed die with core side cover.According to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " shaping plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Pavement seepage instrument is adopted to carry out water penetration test.First, be placed on foraminated surface by the plastic ring of pavement seepage instrument, making to be placed on diameter in plastic ring is on 150mm circle 2.Divide outside plastic ring with chalk and draw circle.With plasticine, encapsulation process is carried out to the part of the surface within outer ring except hole.Water creep appearance is placed on strip gasket material surface, ballast steel ring is installed, flows out between base and road surface to prevent press water.
Close water creep appearance switch, in graduated cylinder, fill water, then open switch, the water in graduated cylinder is flowed downward, discharge air in water creep appearance sealed bottom space.Closing switch, fills water again in graduated cylinder.
Open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater.
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.Test findings is in table 1.
The making of the plate-like bitumen mixture specimen of embodiment 2 with 1 hole and the method for testing of inner permeability performance thereof
(1) structure of test specimen
Plate-like test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.Drawing 1 diameter in surface of test piece 1 center is 150mm circle 2.1 cylindrical hole 3 is set in circle, is placed in the center of circle 4 place.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: with the steel plate of long 300mm, wide 300mm, thick 5mm as bed die, install in the center, surface 5 of bed die 1 with the measure-alike right cylinder steel rod member 6 needing the hole arranged, as core.
With test specimen mutually level limit mould on specimen molding bed die with core side cover.According to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " shaping plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Pavement seepage instrument is adopted to carry out water penetration test.First, be placed on foraminated surface by the plastic ring of pavement seepage instrument, making to be placed on diameter in plastic ring is on 150mm circle 2.Divide outside plastic ring with chalk and draw circle.With plasticine, encapsulation process is carried out to the part of the surface within outer ring except hole.Water creep appearance is placed on strip gasket material surface, ballast steel ring is installed, flows out between base and road surface to prevent press water.
Close water creep appearance switch, in graduated cylinder, fill water, then open switch, the water in graduated cylinder is flowed downward, discharge air in water creep appearance sealed bottom space.Closing switch, fills water again in graduated cylinder.
Open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater.
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.Test findings is in table 1.
The making of the plate-like bitumen mixture specimen of embodiment 3 with 2 holes and the method for testing of inner permeability performance thereof
(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 surface of test piece 1 center is 150mm circle 2.
Arrange 2 cylindrical holes 3 in circle, with the center of circle 4 for axis of symmetry is symmetrical arranged, 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
The structure of specimen molding 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, symmetry installs the position in the holes that 2 are arranged with needs, measure-alike right cylinder steel rod member 6, as core.
With test specimen mutually level limit mould on specimen molding bed die with core side cover.According to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " shaping plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Pavement seepage instrument is adopted to carry out water penetration test.First, be placed on foraminated surface by the plastic ring of pavement seepage instrument, making to be placed on diameter in plastic ring is on 150mm circle 2.Divide outside plastic ring with chalk and draw circle.With plasticine, encapsulation process is carried out to the part of the surface within outer ring except hole.Water creep appearance is placed on strip gasket material surface, ballast steel ring is installed, flows out between base and road surface to prevent press water.
Close water creep appearance switch, in graduated cylinder, fill water, then open switch, the water in graduated cylinder is flowed downward, discharge air in water creep appearance sealed bottom space.Closing switch, fills water again in graduated cylinder.
Open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater.
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.Test findings is in table 1.
The making of the plate-like bitumen mixture specimen of embodiment 4 with 2 holes and the method for testing of inner permeability performance thereof
(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 surface of test piece 1 center is 150mm circle 2.
Arrange 2 cylindrical holes 3 in circle, with the center of circle 4 for axis of symmetry is symmetrical arranged, 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
The structure of specimen molding 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, symmetry installs the position in the holes that 2 are arranged with needs, measure-alike right cylinder steel rod member 6, as core.
With test specimen mutually level limit mould on specimen molding bed die with core side cover.According to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " shaping plate-like test specimen with holes in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
(3) detection method of the permeability performance of plate-like bitumen mixture specimen inside with holes
Pavement seepage instrument is adopted to carry out water penetration test.First, be placed on foraminated surface by the plastic ring of pavement seepage instrument, making to be placed on diameter in plastic ring is on 150mm circle 2.Divide outside plastic ring with chalk and draw circle.With plasticine, encapsulation process is carried out to the part of the surface within outer ring except hole.Water creep appearance is placed on strip gasket material surface, ballast steel ring is installed, flows out between base and road surface to prevent press water.
Close water creep appearance switch, in graduated cylinder, fill water, then open switch, the water in graduated cylinder is flowed downward, discharge air in water creep appearance sealed bottom space.Closing switch, fills water again in graduated cylinder.
Open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater.
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.Test findings is in table 1.
The bitumen mixture specimen water penetration test of the conventional atresia of comparative example 1
According to the plate-like test specimen of T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " shaping atresia in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).Test specimen apparent size is: long 300mm, wide 300mm, thick 100mm.
The base plastic ring of pavement seepage instrument is placed in test specimen center, inner side and outer side respectively along plastic ring draws circle, with encapsulant, encapsulation process is carried out to the road surface between outer ring and inner ring, water creep appearance is placed on the sealant surface between described outer ring and inner ring, ballast steel ring is installed, flows out between base and road surface to prevent press water.
Close water creep appearance switch, in graduated cylinder, fill water, then open switch, the water in graduated cylinder is flowed downward, discharge air in water creep appearance sealed bottom space.Closing switch, fills water again in graduated cylinder.
Open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater.
With following formulae discovery infiltration coefficient:
C
wfor infiltration coefficient; T is timing time.Test findings is in 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
From table 1 test findings, along with the increase arranging the increasing of hole count, bore dia and the degree of depth, the increase gradually of infiltration coefficient.Illustrate compared with T0730-2011 " asphalt water penetration test " method in existing " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011), the invention provides the detection method of bitumen mixture specimen inner different depth place permeability performance.Performance for the asphalt of checking design provides the foundation of science, improves bituminous pavement anti-water damage property.
Claims (3)
1. the method for making of bitumen mixture specimen, is characterized in that comprising the steps:
(1) with the steel plate of long 300mm, wide 300mm, thick 5mm ~ 10mm as bed die, install in the centre of surface position of bed die and need the measure-alike right cylinder steel rod member of the cylindrical hole arranged as core; The diameter of cylindrical hole is 2 ~ 30mm, and the degree of depth is 0.2 ~ 0.8 times of specimen thickness; 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 crosses the upper end face center of test specimen;
(2) overlap and test specimen mutually level limit mould with core side at specimen molding bed die; Plate-like test specimen with holes is made according to T0703-2011 " bitumen mixture specimen method for making (wheel milling process) " in " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011).
2. the method for making of bitumen mixture specimen according to claim 1, is characterized in that the center of described cylindrical hole is overlapping with the central shaft of test specimen, and central shaft crosses the upper end face center of test specimen.
3. the method for testing of the inside permeability performance of bitumen mixture specimen that obtains of method for making described in claim 1 or 2, 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 pavement seepage instrument to carry out water penetration test: first, to be placed on bitumen mixture specimen foraminated surface by the plastic ring of pavement seepage instrument, make to be placed in plastic ring step 1. on described circle; Outer ring is drawn outside plastic ring, with plasticine, encapsulation process is carried out to the part of the surface within outer ring except cylindrical hole, water creep appearance is put plasticine surface after sealing, water creep appearance is installed ballast steel ring, flow out bottom water creep appearance and between plasticine surface to prevent press water;
3. close water creep appearance switch, fill water, then open switch, the water in graduated cylinder is flowed downward in graduated cylinder, discharge air in water creep appearance sealed bottom space, closing switch, fills water again in graduated cylinder;
4. open water creep appearance switch, when the 100mL scale of graduated cylinder is down in underwater, start manual time-keeping immediately, when being down to 500mL scale to underwater;
With following formulae discovery infiltration coefficient:
for infiltration coefficient;
tfor timing time.
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| CN103196813B (en) * | 2013-04-28 | 2014-11-19 | 长安大学 | Evaluation method of road surface bituminous mixture separation degree |
| CN104931331B (en) * | 2015-04-29 | 2017-12-05 | 长安大学 | A kind of Asphalt Pavement Construction Quality methods of testing and evaluating |
| CN106872304B (en) * | 2017-01-20 | 2019-10-25 | 武汉理工大学 | Fine aggregate bitumen mixture specimen humidity health-preserving method |
| 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 |
| 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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| CN102135481A (en) * | 2011-01-10 | 2011-07-27 | 东南大学 | Method for testing rutting-resistant performance of mixture in bituminous pavement |
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| JP3598247B2 (en) * | 1999-12-14 | 2004-12-08 | 鹿島建設株式会社 | Specimen preparation apparatus and specimen preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102135481A (en) * | 2011-01-10 | 2011-07-27 | 东南大学 | Method for testing rutting-resistant performance of mixture in bituminous pavement |
Non-Patent Citations (2)
| Title |
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| 交通部公路科学研究所.公路工程沥青及沥青混合料试验规程.《公路工程沥青及沥青混合料试验规程》.2000,252-258，398-401. * |
| 基于现场钻芯取样的沥青结构层抗车辙性能评价方法;张争奇等;《中国公路学报》;20120930;第25卷(第5期);31-37 * |
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