CN202793989U - Light constant head permeameter for porous concrete - Google Patents
Light constant head permeameter for porous concrete Download PDFInfo
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- CN202793989U CN202793989U CN 201220486926 CN201220486926U CN202793989U CN 202793989 U CN202793989 U CN 202793989U CN 201220486926 CN201220486926 CN 201220486926 CN 201220486926 U CN201220486926 U CN 201220486926U CN 202793989 U CN202793989 U CN 202793989U
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Abstract
The utility model discloses a light constant head permeameter for porous concrete. The light constant head permeameter for the porous concrete comprises a test device, a water supplying device and a water draining device. Osmotic coefficients of test porous concrete are tested with the test device. The water supplying device supplies water for the test device and the water draining device is connected with the test device. The test porous concrete is a cubic test piece. The test device comprises a test piece sleeve barrel with a test piece containing cavity inside, an upper sleeve barrel and a lower sleeve barrel. The upper sleeve barrel and the lower sleeve barrel are respectively arranged above and under the test piece sleeve barrel in a sealed mode and both are cylinder-shaped organic glass barrels. A water overflowing hole and a first pressure measuring hole are arranged in the upper sleeve barrel. The test piece containing cavity is a cubic cavity body. A second pressure measuring hole is arranged in the test piece sleeve barrel. A frame-shaped supportive platform is arranged on the lower portion of the test piece sleeve barrel. Water draining holes are arranged in the lateral wall of the lower sleeve barrel and a water collecting groove is arranged in the lower sleeve barrel. The light constant head permeameter for the porous concrete has the advantages of being reasonable in design, convenient to dismantle and install, convenient to operate and use, good in seal, accurate in test data and capable of effectively solving the problems of leakage of the lateral wall and inaccurate measuring on a water level difference of a conventional constant head permeameter.
Description
Technical field
The utility model belongs to road engineering material osmotic coefficient investigating technical field, especially relates to a kind of lightweight constant head cellular concrete permeameter.
Background technology
Along with the surge of road construction mileage, various forms of pavement diseases also increase sharply, and wherein the Moisture Damage on road surface is one of disease the severeest in all diseases.At present, the developed countries such as the U.S., Britain, Japan are accumulating a large amount of experiences aspect the pavement structure draining, and the pavement structure draining is widely used as a measure in the design of pavement structure and construction.The research of domestic road pavement structure drainage starting is slower, and achievement is also few, and the principle regulation has only been made in the draining of existing relevant specification road pavement inside configuration, and design is often undertaken by experience, and the Performance Evaluation of discharge structure layer is had one-sidedness.China's road pavement structure drainage systematic research starts from nineteen ninety, and Tongji University has built the internal drainage Experiment Road of one section cement concrete pavement at Jiangxi Province's Pingxiang City.Afterwards, Tongji University is studied cement concrete pavement, has proposed computing method and the result of calculation of freeness number.Zheng Mulian studies porous concrete base, by making permeameter, infiltration coefficient is tested, the drainage performance indexs such as infiltration coefficient, porosity and Relations Among have been carried out systematic analysis, and proposed porous concrete base cement concrete pavement structure method for designing.Afterwards, Tongji University is studied cement concrete pavement, has proposed computing method and the result of calculation of freeness number.Zheng Mulian studies porous concrete base, by making permeameter, infiltration coefficient is tested, the drainage performance indexs such as infiltration coefficient, porosity and Relations Among have been carried out systematic analysis, and proposed porous concrete base cement concrete pavement structure method for designing.
The instrument of indoor test infiltration coefficient is divided into two kinds of constant head permeameter and falling head permeameters according to the difference of permeability test principle.The material that the permeance properties such as general clayey soil and fine grained soil are relatively poor, coefficient of permeability K is less than 10
-3Cm/s is difficult to Accurate Determining owing to flow is too little, often adopt variable water level method to measure its infiltration coefficient.Constant head permeability test is applicable to the larger materials such as sandy soil of infiltration coefficient, and the infiltration coefficient of cellular concrete is not less than 0.35cm/s usually, therefore can adopt hydrostatic head method to measure its infiltration coefficient.About the mensuration of cellular concrete infiltration coefficient, there is no at present unified test method, common permeameter is mainly used in the mensuration of soil sample infiltration coefficient.Infiltration coefficient is to characterize the most direct and effective index of cellular concrete drainage performance, and nowadays based on Darcy test law, cellular concrete also is like this to the mensuration of adrainage material infiltration coefficient mostly.
Research is found by inquiry, all there is following problem to some extent in existing constant head permeameter employed both at home and abroad: the first, side leakage problem is not solved well: owing to adopt the modes such as wax, expansion glue, fluid sealant or various adhesive tapes, fill the hole between instrument sidewall and the test specimen, thereby be difficult to prevent from leaking fully, and practical operation is loaded down with trivial details; The second, data testing accuracy is lower: because the pressure differential that will measure in the permeability test is differential pressure, and existing constant head permeameter generally adopts glass tube or U-shaped pipe measurement to carry out the pressure differential test, its survey measurements can not be accurate to the 1mm water column, thereby data testing accuracy is lower.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of lightweight constant head cellular concrete permeameter is provided, its reasonable in design, easy accessibility, use is easy and simple to handle and sealing is good, test data is accurate, can effectively solve sidewall seepage, the water-head that existing constant head tester exists and measure the problems such as out of true.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of lightweight constant head cellular concrete permeameter, it is characterized in that: comprise proving installation that the infiltration coefficient of porous concrete specimens is tested, the water supply installation that described proving installation is supplied water and the drainage arrangement that joins with described proving installation, described porous concrete specimens is cube specimen; Described proving installation comprises that inside is provided with the test specimen sleeve of test specimen placed cavity, sealing is installed in the upper bush of test specimen sleeve top and the lower sleeve that sealing is installed in test specimen sleeve below; Described upper bush is that cylindric organic glass cylinder and its inside of the equal opening in top and the bottom communicates with described test specimen placed cavity, the lateral wall top of described upper bush has the spillway hole that communicates with its inside, the lateral wall bottom of upper bush has the pressure tap one that communicates with its inside, described pressure tap one is mutually concordant with the cube specimen upper end in being positioned over described test specimen placed cavity, and is equipped with on the pressure tap one be used to the piezometric tube one of testing described cube specimen top water level; The water filling in the described proving installation from top to bottom of described water supply installation; Described test specimen placed cavity is the cube cavity, and the size of described cube cavity and described cube specimen is measure-alike; Described test specimen sleeve is the inner cylindric organic glass cylinder that has described cube cavity, and have the pressure tap two that communicates with described test specimen placed cavity on the lateral wall of test specimen sleeve, described pressure tap two is mutually concordant with the cube specimen bottom in being positioned over described test specimen placed cavity, and is equipped with on the pressure tap two be used to the piezometric tube two of testing described cube specimen bottom water level; On the lower inside wall of described test specimen sleeve, be provided with the square frame-shaped brace table that the cube specimen that is positioned in the described test specimen placed cavity is supported; Described lower sleeve is that cylindric organic glass cylinder and its inside of upper opening and lower seal is provided with water leg, and described water leg communicates with described test specimen placed cavity; Have the osculum that communicates with described water leg on the lateral wall of described lower sleeve; Described osculum and described drainage arrangement join.
Above-mentioned a kind of lightweight constant head cellular concrete permeameter is characterized in that: described water supply installation comprises water supply container and the feed pipe that is installed on the water supply container, and tongs one is housed on the described feed pipe, is provided with level scale on the lateral wall of described water supply container; The water delivering orifice of described feed pipe is positioned at the upper bush top.
Above-mentioned a kind of lightweight constant head cellular concrete permeameter is characterized in that: be provided with water barrier on the lateral wall of described cube specimen, and the gap between described cube specimen lateral wall and the described test specimen placed cavity madial wall seals by can sealing wax.
Above-mentioned a kind of lightweight constant head cellular concrete permeameter is characterized in that: described water barrier comprises the rubber belt sealing layer one that formed by the wide adhesive tape that is wrapped on the described cube specimen lateral wall, the sealant two that is formed by the Polypropylence Sheet that is laid on the described rubber belt sealing layer one and the rubber belt sealing layer three that is formed by the wide adhesive tape that is wrapped on the described sealant two.
Above-mentioned a kind of lightweight constant head cellular concrete permeameter is characterized in that: all be connected and sealed threadably between described test specimen sleeve and upper bush and the lower sleeve.
Above-mentioned a kind of lightweight constant head cellular concrete permeameter is characterized in that: described drainage arrangement comprises drainpipe and is installed in tongs two on the drainpipe, an end of described drainpipe and osculum joins and its other end passes in the graduated cylinder.
The utility model compared with prior art has the following advantages:
1, simple in structure, processing and fabricating is convenient and input cost is low.
2, the proving installation that adopts is made by organic glass, and is not only lightweight, and long service life.
3, easy accessibility, used proving installation is assembled by test specimen sleeve, upper bush and lower sleeve, and not only the sealing of test specimen is convenient, and sealing is also very easy between test specimen sleeve and upper bush and the lower sleeve, and airtight quality is easy to guarantee.
4, use easy and simple to handle and result of use good, sealing is good, and test data is accurate.
In sum, the utility model reasonable in design, easy accessibility, use is easy and simple to handle and sealing is good, test data is accurate, can effectively solve sidewall seepage, the water-head that existing constant head tester exists and measure the problems such as out of true.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-water supply container; 2-test specimen sleeve; 2-1-pressure tap two;
2-2-piezometric tube two; 2-3-square frame-shaped brace table; 3-upper bush;
3-1-spillway hole; 3-2-pressure tap one; 3-3-piezometric tube one;
4-lower sleeve; 4-2-osculum; 5-feed pipe;
6-drainpipe; 7-tongs two; 8-tongs one.
Embodiment
As shown in Figure 1, the utility model comprises proving installation that the infiltration coefficient of porous concrete specimens is tested, the water supply installation that described proving installation is supplied water and the drainage arrangement that joins with described proving installation, and described porous concrete specimens is cube specimen.
Described proving installation comprises that inside is provided with the test specimen sleeve 2 of test specimen placed cavity, sealing is installed in the upper bush 3 of test specimen sleeve 2 tops and the lower sleeve 4 that sealing is installed in test specimen sleeve 2 belows.Described upper bush 3 communicates with described test specimen placed cavity for the cylindric organic glass cylinder of the equal opening in top and the bottom and its are inner, the lateral wall top of described upper bush 3 has the spillway hole 3-1 that communicates with its inside, the lateral wall bottom of upper bush 3 has pressure tap one 3-2 that communicates with its inside, described pressure tap one 3-2 is mutually concordant with the cube specimen upper end in being positioned over described test specimen placed cavity, and is equipped with on pressure tap one 3-2 be used to piezometric tube one 3-3 that tests described cube specimen top water level; The water filling in the described proving installation from top to bottom of described water supply installation.Described test specimen placed cavity is the cube cavity, and the size of described cube cavity and described cube specimen is measure-alike.Described test specimen sleeve 2 is the inner cylindric organic glass cylinder that has described cube cavity, and have pressure tap two 2-1 that communicate with described test specimen placed cavity on the lateral wall of test specimen sleeve 2, described pressure tap two 2-1 are mutually concordant with the cube specimen bottom in being positioned over described test specimen placed cavity, and are equipped with on pressure tap two 2-1 be used to piezometric tube two 2-2 that test described cube specimen bottom water level.On the lower inside wall of described test specimen sleeve 2, be provided with the square frame-shaped brace table 2-3 that the cube specimen that is positioned in the described test specimen placed cavity is supported.Described lower sleeve 4 is provided with water leg for cylindric organic glass cylinder and its inside of upper opening and lower seal, and described water leg communicates with described test specimen placed cavity; Have the osculum 4-2 that communicates with described water leg on the lateral wall of described lower sleeve 4.Described osculum 4-2 and described drainage arrangement join.
In the present embodiment, described water supply installation comprises water supply container 1 and the feed pipe 5 that is installed on the water supply container 1, on the described feed pipe 5 tongs 1 is housed, and is provided with level scale on the lateral wall of described water supply container 1; The water delivering orifice of described feed pipe 5 is positioned at upper bush 3 tops.
During actual the test, be provided with water barrier on the lateral wall of described cube specimen, and the gap between described cube specimen lateral wall and the described test specimen placed cavity madial wall seals by can sealing wax.
In the present embodiment, described water barrier comprises the rubber belt sealing layer one that formed by the wide adhesive tape that is wrapped on the described cube specimen lateral wall, the sealant two that is formed by the Polypropylence Sheet that is laid on the described rubber belt sealing layer one and the rubber belt sealing layer three that is formed by the wide adhesive tape that is wrapped on the described sealant two.
In the present embodiment, all be connected and sealed threadably between described test specimen sleeve 2 and upper bush 3 and the lower sleeve 4.
In the actual use procedure, between described test specimen sleeve 2 and upper bush 3 and test specimen sleeve 2 and the lower sleeve 4, also can adopt the connected mode of other type.
In the present embodiment, described drainage arrangement comprises drainpipe 6 and the tongs 27 that is installed on the drainpipe 6, and an end of described drainpipe 6 and osculum 4-2 join and its other end passes in the graduated cylinder.
Actually add man-hour, the height of described upper bush 3 is 150mm, and wall thickness is that 8mm and external diameter are 250mm.The aperture of described spillway hole 3-1 and pressure tap one 3-2 is 8mm.Described spillway hole 3-1 plays the spilling water effect, can guarantee in the experimentation that the water levels in the upper bush 3 remain at ordinary water level and do not change.The aperture of described pressure tap two 2-1 is 8mm.The height of described test specimen sleeve 2 is 184mm, and external diameter is 250mm.The height of described lower sleeve 4 is 184mm, and wall thickness is that 8mm and external diameter are 250mm.The aperture of described osculum 4-2 is 8mm.
In the present embodiment, the length and width height of described cube specimen is 150mm.
Before actual the use, first described cube specimen sealing is packed in the described test specimen placed cavity, detailed process is as follows: will tightly wrap around the cube specimen 21 with wide adhesive tape first, and form rubber belt sealing layer one; Then with polybag cube specimen is tightly wrapped up, and form sealant two; Then, with wide adhesive tape around the cube specimen and top and bottom are closely snarled again, and form rubber belt sealing layer three; Subsequently, cube specimen is put into the described test specimen placed cavity of test specimen sleeve 2, and the bottom of described test specimen placed cavity is stifled tight, cylinder, and then the wax water after will melting pours into test specimen sleeve 2 along annulus between cube specimen and the described test specimen placed cavity, stops to fill with wax until wax water overflows the top; Treat after the complete cooled and solidified of the wax of filling with, with the sealing place excision at test specimen sleeve 2 two ends, the two ends of exposing cube specimen.
When test specimen sleeve 2, upper bush 3 and lower sleeve 4 are assembled, spread upon uniformly separately junction with vaseline, leak when preventing from testing.During actual test, carry out experimental implementation according to the constant head permeability test step in " Standard for test methods of earthworks ", concrete operation step is as follows:
At first, open feed pipe 5 to the 2 interior slow water fillings of test specimen sleeve, current are filled whole test specimen sleeve 2 from top to bottom, when the water surface exceeds the cube specimen top, continuing to be filled to spillway hole 3-1 has water to overflow, check afterwards the water level inside of piezometric tube one 3-3 and piezometric tube two 2-2, and so that piezometric tube one 3-3 is mutually concordant with the water level of spillway hole 3-1 with the water level inside of piezometric tube two 2-2;
Afterwards, drainpipe 6 is increased to more than the spillway hole 3-1, feed pipe 5 is put into upper bush 3, opening tongs 27 makes water be injected in the described proving installation by the top, reduce drainpipe 6 from top to bottom to top 1/3 At The Height of described cube specimen, form water level official post water and infiltrate described cube specimen, flow out through drainpipe 6, the tongs 1 of regulating on the feed pipe 5 makes the water yield that enters described proving installation more than the water yield of overflowing, spillway hole 3-1 has water to overflow all the time, keep the water level in the described proving installation constant, described like this cube specimen just is under the constant head and permeates; After the water level inside of piezometric tube one 3-3 and piezometric tube two 2-2 is stablized, survey the note water level, and calculate the water-head between piezometric tube one 3-3 and piezometric tube two 2-2, record oozes out the water yield in required time;
Then, from top to bottom reduce respectively drainpipe 6 to described cube specimen middle part and 1/3 place, bottom, and the method for testing when being down to top 1/3 At The Height is measured respectively and is oozed out the water yield, when the data of measuring under the different hydraulic slopes near the time, finish test.
At last, test data is put in order, and calculate the constant head infiltration coefficient of described cube specimen.
In the experimentation, after the cube specimen of unlike material tested, can draw the infiltration coefficient of unlike material.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (6)
1. lightweight constant head cellular concrete permeameter, it is characterized in that: comprise proving installation that the infiltration coefficient of porous concrete specimens is tested, the water supply installation that described proving installation is supplied water and the drainage arrangement that joins with described proving installation, described porous concrete specimens is cube specimen; Described proving installation comprises that inside is provided with the test specimen sleeve (2) of test specimen placed cavity, sealing is installed in the upper bush (3) of test specimen sleeve (2) top and the lower sleeve (4) that sealing is installed in test specimen sleeve (2) below; Described upper bush (3) communicates with described test specimen placed cavity for the cylindric organic glass cylinder of the equal opening in top and the bottom and its are inner, the lateral wall top of described upper bush (3) has the spillway hole (3-1) that communicates with its inside, the lateral wall bottom of upper bush (3) has the pressure tap one (3-2) that communicates with its inside, described pressure tap one (3-2) is mutually concordant with the cube specimen upper end in being positioned over described test specimen placed cavity, and is equipped with on the pressure tap one (3-2) be used to the piezometric tube one (3-3) of testing described cube specimen top water level; The water filling in the described proving installation from top to bottom of described water supply installation; Described test specimen placed cavity is the cube cavity, and the size of described cube cavity and described cube specimen is measure-alike; Described test specimen sleeve (2) is the inner cylindric organic glass cylinder that has described cube cavity, and have the pressure tap two (2-1) that communicates with described test specimen placed cavity on the lateral wall of test specimen sleeve (2), described pressure tap two (2-1) is mutually concordant with the cube specimen bottom in being positioned over described test specimen placed cavity, and is equipped with on the pressure tap two (2-1) be used to the piezometric tube two (2-2) of testing described cube specimen bottom water level; On the lower inside wall of described test specimen sleeve (2), be provided with the square frame-shaped brace table (2-3) that the cube specimen that is positioned in the described test specimen placed cavity is supported; Described lower sleeve (4) is provided with water leg for cylindric organic glass cylinder and its inside of upper opening and lower seal, and described water leg communicates with described test specimen placed cavity; Have the osculum (4-2) that communicates with described water leg on the lateral wall of described lower sleeve (4); Described osculum (4-2) joins with described drainage arrangement.
2. according to a kind of lightweight constant head cellular concrete permeameter claimed in claim 1, it is characterized in that: described water supply installation comprises water supply container (1) and is installed in feed pipe (5) on the water supply container (1), tongs one (8) is housed on the described feed pipe (5), is provided with level scale on the lateral wall of described water supply container (1); The water delivering orifice of described feed pipe (5) is positioned at upper bush (3) top.
3. according to claim 1 or 2 described a kind of lightweight constant head cellular concrete permeameters, it is characterized in that: be provided with water barrier on the lateral wall of described cube specimen, and the gap between described cube specimen lateral wall and the described test specimen placed cavity madial wall seals by can sealing wax.
4. according to a kind of lightweight constant head cellular concrete permeameter claimed in claim 3, it is characterized in that: described water barrier comprises the rubber belt sealing layer one that formed by the wide adhesive tape that is wrapped on the described cube specimen lateral wall, the sealant two that is formed by the Polypropylence Sheet that is laid on the described rubber belt sealing layer one and the rubber belt sealing layer three that is formed by the wide adhesive tape that is wrapped on the described sealant two.
5. according to claim 1 or 2 described a kind of lightweight constant head cellular concrete permeameters, it is characterized in that: all be connected and sealed threadably between described test specimen sleeve (2) and upper bush (3) and the lower sleeve (4).
6. according to claim 1 or 2 described a kind of lightweight constant head cellular concrete permeameters, it is characterized in that: described drainage arrangement comprises drainpipe (6) and is installed in tongs two (7) on the drainpipe (6) that an end of described drainpipe (6) and osculum (4-2) join and its other end passes in the graduated cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486926 CN202793989U (en) | 2012-09-23 | 2012-09-23 | Light constant head permeameter for porous concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220486926 CN202793989U (en) | 2012-09-23 | 2012-09-23 | Light constant head permeameter for porous concrete |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628583A (en) * | 2015-12-29 | 2016-06-01 | 浙江工业大学 | Permeability tester |
| CN105628582A (en) * | 2015-12-29 | 2016-06-01 | 浙江工业大学 | Permeability test device |
| CN105651669A (en) * | 2015-12-29 | 2016-06-08 | 浙江工业大学 | Permeability test apparatus with air compressor |
| CN105699269A (en) * | 2016-02-24 | 2016-06-22 | 哈尔滨工业大学 | Multi-directional constant-pressure asphalt mixture seepage testing device |
| CN105973782A (en) * | 2016-05-25 | 2016-09-28 | 长安大学 | Determination instrument and determination method for osmotic coefficients of drilling and coring test part |
| CN106053313A (en) * | 2016-05-24 | 2016-10-26 | 湖南建研信息技术股份有限公司 | Concrete impermeability test sensing device and method |
| CN106442267A (en) * | 2016-10-20 | 2017-02-22 | 河南理工大学 | Measuring device for osmotic coefficient of formed test piece and use method thereof |
| CN107192651A (en) * | 2017-05-25 | 2017-09-22 | 昆明理工大学 | A kind of tailing dam silting phenomena simulation device |
| CN107478811A (en) * | 2017-06-23 | 2017-12-15 | 中国科学院武汉岩土力学研究所 | Simulate the experimental rig and method of underground engineering large deformation cushion supporting mechanism |
| CN107677585A (en) * | 2017-11-10 | 2018-02-09 | 北京耐尔得仪器设备有限公司 | The device for determining permeation coefficient and measuring method of a kind of seepy material |
| CN109520905A (en) * | 2018-11-21 | 2019-03-26 | 广西大学 | A kind of permeable heterogeneity measurement device of pervious concrete and its test method |
| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
| CN112649342A (en) * | 2020-12-14 | 2021-04-13 | 广东省水利水电科学研究院 | Test device and method for detecting quality of horizontal permeability coefficient of green concrete |
| CN113324887A (en) * | 2021-04-30 | 2021-08-31 | 东南大学 | Constant head water permeability coefficient testing device and method based on actual rainfall head height |
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2012
- 2012-09-23 CN CN 201220486926 patent/CN202793989U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105628582A (en) * | 2015-12-29 | 2016-06-01 | 浙江工业大学 | Permeability test device |
| CN105651669A (en) * | 2015-12-29 | 2016-06-08 | 浙江工业大学 | Permeability test apparatus with air compressor |
| CN105628583A (en) * | 2015-12-29 | 2016-06-01 | 浙江工业大学 | Permeability tester |
| CN105699269B (en) * | 2016-02-24 | 2018-07-03 | 哈尔滨工业大学 | The multidirectional constant pressure seepage flow test device of asphalt |
| CN105699269A (en) * | 2016-02-24 | 2016-06-22 | 哈尔滨工业大学 | Multi-directional constant-pressure asphalt mixture seepage testing device |
| CN106053313A (en) * | 2016-05-24 | 2016-10-26 | 湖南建研信息技术股份有限公司 | Concrete impermeability test sensing device and method |
| CN105973782A (en) * | 2016-05-25 | 2016-09-28 | 长安大学 | Determination instrument and determination method for osmotic coefficients of drilling and coring test part |
| CN106442267A (en) * | 2016-10-20 | 2017-02-22 | 河南理工大学 | Measuring device for osmotic coefficient of formed test piece and use method thereof |
| CN107192651A (en) * | 2017-05-25 | 2017-09-22 | 昆明理工大学 | A kind of tailing dam silting phenomena simulation device |
| CN107478811A (en) * | 2017-06-23 | 2017-12-15 | 中国科学院武汉岩土力学研究所 | Simulate the experimental rig and method of underground engineering large deformation cushion supporting mechanism |
| CN107677585A (en) * | 2017-11-10 | 2018-02-09 | 北京耐尔得仪器设备有限公司 | The device for determining permeation coefficient and measuring method of a kind of seepy material |
| CN107677585B (en) * | 2017-11-10 | 2024-01-09 | 北京耐尔得仪器设备有限公司 | Device and method for measuring water permeability coefficient of water permeable material |
| CN109520905A (en) * | 2018-11-21 | 2019-03-26 | 广西大学 | A kind of permeable heterogeneity measurement device of pervious concrete and its test method |
| CN109520905B (en) * | 2018-11-21 | 2022-04-19 | 广西大学 | Permeable concrete permeable heterogeneity measuring device and method |
| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
| CN112649342A (en) * | 2020-12-14 | 2021-04-13 | 广东省水利水电科学研究院 | Test device and method for detecting quality of horizontal permeability coefficient of green concrete |
| CN113324887A (en) * | 2021-04-30 | 2021-08-31 | 东南大学 | Constant head water permeability coefficient testing device and method based on actual rainfall head height |
| CN113324887B (en) * | 2021-04-30 | 2022-03-18 | 东南大学 | Constant head water permeability coefficient testing device and method based on actual rainfall head height |
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