CN104833584B - Bituminous concrete press water stability test device and its test method - Google Patents
Bituminous concrete press water stability test device and its test method Download PDFInfo
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- CN104833584B CN104833584B CN201510062041.8A CN201510062041A CN104833584B CN 104833584 B CN104833584 B CN 104833584B CN 201510062041 A CN201510062041 A CN 201510062041A CN 104833584 B CN104833584 B CN 104833584B
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Abstract
The invention discloses a kind of bituminous concrete press water stability test device and its test method, affixed cover is sealed in the tank mouth of pressurized tank, bottom in pressurized tank sets electric heater and isolated grid plate, temperature controller is installed on pressurized tank, water intaking valve, air bleeding valve and pressure gauge are installed on cover, the valvular discharge outlet of dressing is set on the bottom surface of pressurized tank.Test procedure：Process test specimen 6；3 test specimens are put into pressurized tank；Other 3 test specimens normal temperature environment disposed within；Add hydraulic pressure plus water temperature to setting, to the stipulated time after pressure release draining, take out test specimen and be arranged on load test on testing machine simultaneously with normal pressure test specimen.The present invention is used for the water stability testing research of the asphalt concrete seepage prevention body under with certain water pressure and isoperibol; its is rational in infrastructure, dependable performance, easy to operate; change of the test through bituminous concrete mechanical property under experimental enviroment and home is realized, test data is accurate.
Description
Technical field
The invention belongs to the hydraulic asphalt concrete that Hydraulic and Hydro-Power Engineering uses to provide press water isoperibol for its test specimen
Testing equipment and its test method, particularly a kind of bituminous concrete press water stability test device and its test method.
Background technology
At present, bituminous concrete has been used in many Hydraulic and Hydro-Power Engineerings as impervious body, and existing in water conservancy and hydropower
Standard criterion in, such as：《Hydraulic asphalt concrete testing regulations》It is steady that bituminous concrete water is just defined in DL/T5362-2006
Qualitative test.To bituminous concrete water stability testing in current standard specifications, used is in water under certain temperature
Infusion method, and with after the experiment of this method, corresponding bituminous concrete water stability coefficient can be calculated.But actual Hydraulic and Hydro-Power Engineering
In, the asphalt concrete seepage prevention body normal phase is worked in the water environment of certain pressure, and bituminous concrete water is steady in the environment
It is qualitative how, experiment judgement can not be carried out.
The content of the invention
, can be with it is an object of the invention to provide a kind of bituminous concrete press water stability test device and its test method
For the water stability testing research of the asphalt concrete seepage prevention body in the environment of with certain water pressure, its is rational in infrastructure, property
Can be reliable, it is easy to operate, accordingly stable water pressure can be provided for bituminous concrete test specimen, the environment according to needed for engineering is set
Surely water temperature is tested, and tests the change through bituminous concrete mechanical property under experimental enviroment and home, test data is accurate
Really.
The object of the present invention is achieved like this：A kind of bituminous concrete press water stability test device, in pressurized tank（1）
Tank mouth on adpting flange is set, be connected through the sealing gasket installed on flange and the bolt uniformly installed（7）By cover
（2）It is fixed in pressurized tank（1）Tank mouth on, the bottom level in pressurized tank sets electric heater, on electric heater
Isolated grid plate is fixedly mounted with the pressure tank of side, temperature controller is installed on the tank wall of pressurized tank, it is uniform in cover
Through hole on water intaking valve, air bleeding valve and pressure gauge are installed respectively, on the bottom surface of pressure tank set dressing it is valvular
Discharge outlet.
A kind of test method of bituminous concrete press water stability test device, tried using bituminous concrete press water is stable
It is as follows that experiment device surely orders the step of part is tested for a trial to bituminous concrete press water：
（1）The bituminous concrete core sample that engineering is taken out is processed into the ㎜ of the ㎜ of diameter 100 ± 3, height 100 ㎜ ± 2 ㎜
Cylinder test specimen totally 6；
（2）Open cover, wherein need carry out press water stability test 3 test specimens be put into pressurized tank, be placed in every
From in grid version, by the normal temperature environment of 20 DEG C ± 1 DEG C disposed within other of 3 test specimens；
（3）Water is filled into pressurized tank by the water intaking valve on cover, installation sealing gasket covers cover, fastening bolt, really
Protect water-tight, and open water intaking valve and air bleeding valve, after Manual pressure water pump is connected on water intaking valve, start to note into pressurized tank
Water, until there are flowing out in air bleeding valve, close air bleeding valve；
（4）Continue the water filling into pressurized tank by pressure water pump to pressurize, pressure reaches 0.3-1MPa, stops pressurization, passes through
Water in electric heater heated pressure tank, reach 20 DEG C -40 DEG C by the water temperature in temperature controller control pressure tank；
（5）After the bituminous concrete test specimen in pressurized tank is kept for 2-7 days under above-mentioned environmental condition, exhaust is then opened
Valve pressure release, then the discharge outlet draining of pressure pot bottom is opened, fastening bolt is unclamped, opens cover；
（6）Take out in test specimen 20 DEG C of ± 1 DEG C of environment of temperature disposed within 2 hours, and installed respectively with other 3 test specimens
On universal testing machine, test specimen axle center and pressing plate center superposition are kept, starts universal testing machine, with 1 ㎜/min's
Loading speed loads, and carries out data acquisition, until test specimen destroys.
The experimental rig of the present invention and the principle of test method
Bituminous concrete press water stability test device is mainly used in offer bituminous concrete test specimen and is soaked in water temperature stability,
And the testing equipment with certain hydraulic pressure force environment.The head situation to be worked according to asphalt concrete seepage prevention body, you can setting
Corresponding water pressure in experiment, and can according to residing for engineering ground ambient water temperature conditions, setting experiment water temperature, and keep pitch to mix
Native test specimen certain time in such circumstances is coagulated, the test of physical and mechanical property is carried out to it after taking-up, to react in this environment shadow
Ring the change of lower bituminous concrete performance.The technical essential of this experimental rig and test method has four aspects：First, it is pitch
Concrete sample provides, up to 2MPa hydraulic pressure force environments, i.e. pressurized tank；Second, by the temperature controller in device and it can add
Heat pipe, the stabilization of water temperature in pressurized tank is kept, is avoided due to influence of the bituminous concrete temperature sensitivity to test specimen performance；Three
It is that water pressure in pressurized tank manually compression pump can apply, and in good time pressurized tank pressure value is read by pressure gauge, ensures pressure
The stabilization of power；Fourth, change of the test after this environment with bituminous concrete test specimen mechanical property under home.
The test method of the present invention
1st, the bituminous concrete heart sample taken out to engineering is processed, or passes through the bituminous concrete pressure needed for Beat numbers
The steady test specimen of power water, the requirement of its size are：Diameter 100mm ± 3mm, height 100mm ± 2mm.6 test specimens are needed altogether.
2nd, pressurized tank handle is caught, opens pressure tank cover, 3 test specimens for wherein needing to carry out press water stability test are put
Enter in pressurized tank, be placed in tank on isolated grid plate；In another 3 test specimens, 20 DEG C of ± 1 DEG C of normal temperature environments disposed within.
3rd, water will be filled in pressurized tank, and covers pressure tank cover, tightens 8, pressure tank cover periphery hex bolts, it is ensured that no
Leak, and open water intaking valve and air bleeding valve, after Manual pressure water pump is connected on water intaking valve, start from Manual pressure water pump to pressure
Water filling in power tank, until there are flowing out in air bleeding valve, that is, close air bleeding valve.
4th, manually pressure water pump continues water filling pressurization, and in good time pressure is read by pressure gauge, until being pressed needed for experiment
Power（The maximum head that generally the engineering asphalt concrete seepage prevention body is born）.Required examination is set by temperature controller again
Test coolant-temperature gage（The generally mean temperature of the engineering-environment water）, and pressurized tank reclaimed water temperature stabilization is waited to test requirements document temperature
Degree.It should be noted at this time that coolant-temperature gage setting is not preferably greater than 90 DEG C, boiling water in pressurized tank is avoided.
5th, keep after bituminous concrete test specimen want seeking time in such circumstances, then opening air bleeding valve pressure release, when pressure just
Chang Hou, then bottom discharge mouth is opened, after draining, 8 hex bolts are unclamped, open pressure tank cover.
6th, take out test specimen 20 DEG C of ± 1 DEG C of normal temperature environments disposed within 2 hours, and with other 3 test specimens, be respectively arranged in
On universal testing machine, test specimen axle center and pressing plate center superposition are kept；
7th, start universal testing machine, loaded with 1mm/min loading speed, and carry out data acquisition, until destroying.
Computational methods
The uniaxial compressive strength (being accurate to 0.01MPa) of each test specimen under normal temperature home：
Rc=Pc/Ai (compression faces of peak load N, the Ai- test specimen of bituminous concrete test specimen under Pc- normal temperature homes
Product mm2)
The uniaxial compressive strength of 3 test specimens is averaged, is the mean intensity Rce under normal temperature home（It is left
0.01MPa）；
The uniaxial compressive strength (being accurate to 0.01MPa) of each test specimen is placed in press water stabilising arrangement：
Ry=Py/Ai (the peak load of bituminous concrete test specimen, compressions of Ai- test specimens in Py- press water stabilising arrangements
Area)
The uniaxial compressive strength of 3 test specimens is averaged, is the mean intensity Rye under press water stable environment（MPa）
（It is left 0.01MPa）；
Then press water coefficient of stability Ky=Rye/Rce, Ky retain two-decimal.
The present invention is used for the water stability testing research of the asphalt concrete seepage prevention body under with certain hydraulic pressure force environment, its
Rational in infrastructure, dependable performance is easy to operate, realizes the experiment that stable water pressure and setting are provided for bituminous concrete test specimen
Water temperature, and test or the change through bituminous concrete mechanical property under experimental enviroment and home, test data are accurate.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described, Fig. 1 be the present invention main structure diagram, Fig. 2
For Fig. 1 overlooking the structure diagram, Fig. 3 is Fig. 2 A-A cross section structure diagrams.
Embodiment
A kind of bituminous concrete press water stability test device, as shown in Figure 1, Figure 2, Figure 3 shows, in pressurized tank（1）Tank mouth
On adpting flange is set, be connected through the gasket seal installed on flange and the bolt uniformly installed（7）By cover（2）Gu
It is connected on pressurized tank（1）Tank mouth on, the bottom level in pressurized tank 1 sets electric heater 11, on electric heater 11
Isolated grid plate 13 is fixedly mounted with the tank body of pressurized tank 1 of side, temperature controller 8 is installed on the tank wall of pressurized tank 1, in cover
Water intaking valve 4, air bleeding valve 5 and pressure gauge 6 are installed respectively on 2 uniform through holes, dressing is set on the bottom surface of the tank body of pressurized tank 1
Valvular discharge outlet 12.Handle 9 is set on cover 2.In the bottom of the tank body of pressurized tank 1, electric heater terminal box is set
10.Electric heater 11 is electric heating tube or electrically heated rod or electric boiling plate.In the bottom of pressurized tank 1, pressurized tank base 3 is set.
A kind of test method of bituminous concrete press water stability test device, tried using bituminous concrete press water is stable
It is as follows that experiment device surely orders the step of part is tested for a trial to bituminous concrete press water：
（1）The bituminous concrete core sample that engineering is taken out is processed into the ㎜ of the ㎜ of diameter 100 ± 3, height 100 ㎜ ± 2 ㎜
Cylinder test specimen totally 6；
（2）Cover 2 is opened, 3 test specimens for wherein needing to carry out press water stability test are put into pressurized tank（1）It is interior, put
In on isolated grid plate 13, by the normal temperature environment of 20 DEG C ± 1 DEG C disposed within other of 3 test specimens；
（3）Water is filled into pressurized tank 1 by the water intaking valve 4 on cover 2, installation sealing gasket covers cover 2, fastening bolt
7, it is ensured that it is water-tight, and water intaking valve 4 and air bleeding valve 5 are opened, after Manual pressure water pump is connected on water intaking valve 4, start to pressure
Water filling in power tank 1, until there are flowing out in air bleeding valve 5, close air bleeding valve 5；
（4）Continue the water filling into pressurized tank 1 by pressure water pump to pressurize, pressure reaches 0.6MPa, stops pressurization, passes through electricity
Water in the heated pressure tank 1 of heater 11, reach 35 DEG C by the water temperature in the control pressure tank 1 of temperature controller 8；
（5）After the bituminous concrete test specimen in pressurized tank 1 is kept for 5 days under above-mentioned environmental condition, exhaust is then opened
The pressure release of valve 5, then the draining of discharge outlet 12 of the bottom of pressurized tank 1 is opened, fastening bolt 7 is unclamped, opens cover 2；
Take out in test specimen 20 DEG C of ± 1 DEG C of environment of temperature disposed within 2 hours, and be separately mounted to other 3 test specimens
On universal testing machine, test specimen axle center and pressing plate center superposition are kept, starts universal testing machine, with adding for 1 ㎜/min
Lotus speed loads, and carries out data acquisition, until test specimen destroys.
Claims (1)
- A kind of 1. experimental method of bituminous concrete press water stability test device, in pressurized tank（1）Tank mouth on set even Acting flange, it is connected through the sealing gasket installed on flange and the bolt uniformly installed（7）By cover（2）It is fixed in pressurized tank （1）Tank mouth on, in pressurized tank（1）Interior bottom level sets electric heater（11）, positioned at electric heater（11）Top Pressurized tank（1）Isolated grid plate is fixedly mounted with tank body（13）, in pressurized tank（1）Tank wall on temperature controller is installed（8）, Cover（2）Water intaking valve is installed respectively on uniform through hole（4）, air bleeding valve（5）And pressure gauge（6）, in pressurized tank（1）Tank body Dressing valvular discharge outlet is set on bottom surface（12）, it is characterized in that：Utilize bituminous concrete press water stability test device pair The step of stable test specimen of bituminous concrete press water is tested is as follows：The bituminous concrete core sample that engineering is taken out is processed into the ㎜ of the ㎜ of diameter 100 ± 3, height 100 ㎜ ± 2 ㎜ cylinder Test specimen totally 6；Open cover（2）, 3 test specimens for wherein needing to carry out press water stability test are put into pressurized tank（1）It is interior, it is placed in isolation Screen（13）On, by the normal temperature environment of 20 DEG C ± 1 DEG C disposed within other of 3 test specimens；Pass through cover（2）On water intaking valve（4）To pressurized tank（1）In fill water, installation sealing gasket covers cover（2）, fasten spiral shell Bolt（7）, it is ensured that it is water-tight, and open water intaking valve（4）And air bleeding valve（5）, in water intaking valve（4）On connect Manual pressure water pump Afterwards, start to pressurized tank（1）Middle water filling, until air bleeding valve（5）In there are flowing out, close air bleeding valve（5）；Continued by pressure water pump to pressurized tank（1）Interior water filling pressurization, pressure reach 0.3-1MPa, stop pressurization, added by electricity Hot device（11）Heated pressure tank（1）In water, by temperature controller（8）Control pressure tank（1）Interior water temperature reaches 20 DEG C -40 ℃；Make pressurized tank（1）After interior bituminous concrete test specimen is kept for 2-7 days under above-mentioned environmental condition, air bleeding valve is then opened （5）Pressure release, then open pressurized tank（1）The discharge outlet of bottom（12）Draining, unclamp fastening bolt（7）, open cover（2）；Take out in test specimen 20 DEG C of ± 1 DEG C of environment of temperature disposed within 2 hours, and be separately mounted to other 3 test specimens omnipotent In Material Testing Machine, test specimen axle center and pressing plate center superposition are kept, starts universal testing machine, with 1 ㎜/min loading speed Degree loading, and data acquisition is carried out, until test specimen destroys.
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| CN201510062041.8A CN104833584B (en) | 2015-02-05 | 2015-02-05 | Bituminous concrete press water stability test device and its test method |
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| CN201510062041.8A CN104833584B (en) | 2015-02-05 | 2015-02-05 | Bituminous concrete press water stability test device and its test method |
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| CN109839314A (en) * | 2017-11-29 | 2019-06-04 | 中国辐射防护研究院 | Radioactive substance transports package water immersion experimental provision and experimental method |
| CN112782000A (en) * | 2021-01-28 | 2021-05-11 | 中国矿业大学 | Testing device and method for high-pressure mine water-rock (coal) coupling effect |
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| CN201926580U (en) * | 2010-12-23 | 2011-08-10 | 北京中关村开发建设股份有限公司 | Concrete vacuum saturating device |
| CN202870088U (en) * | 2012-09-26 | 2013-04-10 | 长安大学 | Device for testing water stability of asphalt mixture |
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| CN204405443U (en) * | 2015-02-05 | 2015-06-17 | 新疆水利水电科学研究院 | Bituminous concrete press water stability test device |
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| 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 |
| US20110062058A1 (en) * | 2009-09-14 | 2011-03-17 | Chevron U.S.A. Inc. | Method for determining asphaltene stability of a hydrocarbon-containing material |
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| CN201926580U (en) * | 2010-12-23 | 2011-08-10 | 北京中关村开发建设股份有限公司 | Concrete vacuum saturating device |
| CN102636401B (en) * | 2012-04-28 | 2014-06-25 | 长沙理工大学 | Testing device and evaluating method for water stability of water-permeable bituminous mixture |
| CN202870088U (en) * | 2012-09-26 | 2013-04-10 | 长安大学 | Device for testing water stability of asphalt mixture |
| CN204405443U (en) * | 2015-02-05 | 2015-06-17 | 新疆水利水电科学研究院 | Bituminous concrete press water stability test device |
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