CN203249794U - Device for quickly extracting saturated pore water of cement-based material - Google Patents
Device for quickly extracting saturated pore water of cement-based material Download PDFInfo
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- CN203249794U CN203249794U CN 201320254277 CN201320254277U CN203249794U CN 203249794 U CN203249794 U CN 203249794U CN 201320254277 CN201320254277 CN 201320254277 CN 201320254277 U CN201320254277 U CN 201320254277U CN 203249794 U CN203249794 U CN 203249794U
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Abstract
The utility model discloses a device for quickly extracting saturated pore water of a cement-based material. An outer cylinder (1) is a hollow cylinder; no cover is arranged at the upper end of the outer cylinder (1); the bottom of the outer cylinder (1) is provided with a stressed surface (5) and a drain groove (6); the drain groove (6) is provided with a water outlet (7); a small-hole filter screen (2) is placed in the outer cylinder (1) and located on the stressed surface (5); a big-hole inner cylinder (3) is placed in the small-hole filter screen (2); at least the bottom of the big-hole inner cylinder (3) is provided with water outlet holes (8; the big-hole inner cylinder (3) is located on the stressed surface (5); a force transmission cylinder (4) is placed in the big-hole inner cylinder (3) and located on the stressed surface (5). The solution extracted by the device is saturated pore solution squeezed out of the granules, other materials are not introduced, and the composition or concentration of the pore solution is not changed, thus truly reflecting the real condition of the pore water relatively; the device has a double-filtration effect, and the extracted pore water doesn't contain broken granules and impurities, thereby providing an experimental basis for related analysis of the pore water of the cement-based material.
Description
Technical field
The utility model relate to a kind of energy fast, the device of high efficiency extraction cement-based material pore water.
Background technology
The moisture meeting of cement-based material causes that its physical and mechanical property changes, what of water cut are also different on the impact of material property, the test specimen that water cut is large, its physical and mechanical property degradation is large, in the laboratory, usually study cement-based material (mortar under its extreme saturation state-suction state of saturation, concrete etc.) thermal deformation, compressive strength, the hydraulic performance decline such as anti-freezing property and permanance degree, the common surface tension that needs to obtain pore water when analyzing its mechanism, effective alkali content, contact angle, chloride ion content or carry out the analysis of pore water composition, electro-chemical test etc.
At present the extracting method of concrete pore water mainly contains three kinds: take out liquid-solid extraction method (Newton C J for example, Sykes J M.The effect of saIt additions on the alkalinity of ca (OH)
2Solutions[J] .Cement and Concrete Composites, 1987,17 (6): 765.), original position solid-liquid extraction (Sagu é s A A for example, Moreno EI, Andrade C.Evolution of pH during insitu leaching in smallconcretecavities[J] .Cement and Concrete Composites, 1997,1747) and high pressure extraction method (Berry E E 27 (11):, Hemmings R T, Comelius B J.Mechanisms of hydration reactions in high volume fly ash pastes and mortars[J] .Cement and concrete Composite, 1990,18 (2): 301).
Prior art is document (Wang Kun for example, Qu Wenjun, Zhang Junxi, Li Peihao. the reinforcing bar one mortar specimen again chemical property after the carbonization again alkalizes. Tongji University's journal [J], 2012,40 (7): 1058-1063) think the high pressure extraction method to the having relatively high expectations of equipment, original position solid-liquid extraction spended time is long, and it is fairly simple feasible to take out the liquid-solid extraction method.
Taking out the liquid-solid extraction method is to sieve grinding after the fragmentation of grout test specimen, dries to constant weight to add deionized water, filters with shaker flask behind the frequency 24h of per minute 120 times and obtains solution, carries out the tests such as pH value again.This solution is not to be present in hole, but the deionized water that imitation specimen concentration adds is prepared, and also has some to be fixed on alkali in hole or the product in this process, such as calcium hydroxide, will be soluble in water, and so that pH is higher.So the pore water that this method obtains not is concentration and the composition of real pore water.Document (Wan Xiaomei is arranged, Zhao Tiejun. the conductivity of concrete powder immersion liquid and concrete perviousness. industrial building, 2005,35 (8): 82-88) show that adopt taking out the conductivity that the liquid-solid extraction method obtains has preferably correlativity with the conductivity of hole solution, it is feasible that the conductivity of utilizing the powder immersion liquid to test is revised the electrical measurement permeability results.Yet this method is applied to pore water that mortar extracts in order to electrical measurement perviousness no needs and how to revise and do not have the scholar's research mistake consequently, and the pore water that this method is extracted to other pore water indexs of the cement-based materials such as mortar or concrete (such as the pH value, surface tension, contact angle etc.) affect size and correction factor is not understood, therefore take out the pore water of liquid-solid extraction method preparation and must discuss in order to test its end values of test such as pH value, surface tension, contact angle.
The high pressure extraction method is that material is put into equipment and under the pressing machine effect pore water squeezed out, the pore water that this method is extracted is real hole solution, but it is had relatively high expectations to extraction equipment, following document (Ye Mingxun at home, Lu Baoshan, permitted the warm young shoot of a reed etc. entringite forms by liquid phase in the low alkalinity cement slurry evidence [C] the 3rd series cement and concrete collection of thesis. Beijing: China Building Materials Academy, 1997:282-286) with (Zhang Jianbo, Zhang Wensheng, Wu Chunli, Ye Jiayuan. silicate and aluminium sulfate complex cement hole liquid phase PH valve Changeement. cement, 2011, (5): 1-4) reported Ye Mingxun, the pressure filter of the design such as Lu Baoshan can be to the cement briquette liquid phase separation, pressure filter is by core rod, die body, O-ring seal, the chassis forms, the chassis is provided with the drain passage, and Φ 100mm*60mm disk sample puts nylon cloth and is placed between O-ring seal and the chassis, and pressurization extrudes pore water by the drain passage flows out.The drawback of this equipment mainly contains following aspect: one, and the function of this equipment is too single, and is only applicable for the Behavior of Hardened Cement Paste sample less than Φ 100mm*60mm disk, because the less unsuitable moulding of size and test concrete sample; They are two years old, this equipment solution filter function is relatively poor, only filter by nylon cloth, when pressure is larger or sample when being graininess,, nylon cloth is crushed, after embedding Behavior of Hardened Cement Paste, filter effect is just given a discount, and the solution that obtains has certain impurity, is not suitable for use in the extruding of particle test specimen based on this this equipment.In view of the problem of the full shipwreck of test specimen, during the extraction of full water mortar pore water, usually in order to reduce the suction saturation time, test specimen is broken into granule, so the extruding of the saturated pore water of mortar is not suitable for adopting this equipment.Therefore be badly in need of a kind of device of suitable extraction mortar particle pore water.
The utility model content
Technical problem to be solved in the utility model provides the device of the saturated pore water of rapid extraction cement-based material of the pore water that a kind of energy is quick, the high efficiency extraction cement-based material does not contain other impurity.
In order to solve the problems of the technologies described above, the device of the saturated pore water of rapid extraction cement-based material that the utility model provides, by urceolus, the aperture filter screen, macropore inner core and power transmission cylinder form, urceolus is hollow cylinder, the upper end uncovered, the bottom is provided with stress surface and drainage trough, described drainage trough has water delivering orifice, the aperture filter screen is placed in the described urceolus and is on the described stress surface, in described aperture filter screen, be placed with the macropore inner core, described macropore inner core is provided with apopore in the bottom at least and is on the described stress surface, is placed with the power transmission cylinder and described power transmission cylinder is on the described stress surface in described macropore inner core.
Full particle water surface water is filtered dry the macropore inner core power transmission cylinder lower end of the rear apparatus of the present invention of packing into rapidly, then be placed on the universal testing machine pressing plate, opening universal testing machine loads power transmission cylinder pressing machine, damaged by pressure to be forced into particle under 2.0kN/s～3.0kN/s speed, and continue to unload after 5 minutes～10 minutes, the particle pore water flows out by macropore inner core macropore under pressure, through the small holes filter screen, flow in the annular drainage trough of urceolus, the outlet connecting hose by urceolus flows in the beaker.
Described urceolus and power transmission cylinder are made by cast iron or high strength steel.
The area of the described stress surface of described urceolus is greater than the area of described power transmission cylinder lower end.
The position of urceolus water delivering orifice is not higher than drainage trough.
The diameter of the described apopore on the described macropore inner core is greater than the bore dia of described aperture filter screen, and diameter is Φ 5～Φ 20, and there is Φ 3～Φ 5 in the hole of described aperture filter screen.
Adopt the device of the saturated pore water of rapid extraction cement-based material of technique scheme, urceolus plays the pressure-bearing effect and the hole solution drainage can stay crushed granule foreign, in order to avoid impurity is arranged in the hole solution.The power transmission cylinder evenly passes to the pressure of pressing machine on the particle.That the utility model can make is more convenient, extract more efficiently the pore water of " truly ", in the solution without broken particle and impurity.
In sum, the utility model has solved the difficult present situation of extracting hole solution free from foreign meter of prior art, extracts saturated pore water and can study the surface tension of pore water under the saturated-water phase, alkali content value, contact angle, chlorion and chemical constitution etc.Reflect more realistically in the hole solution since surfactant or additive mix and hydrated product on the impact of pore solution physical and chemical performance.
The beneficial effects of the utility model: the solution that the utility model device extracts is hole solution under the state of saturation of extruding particle outflow, do not introduce other material, also not changing hole solution forms or concentration, the truth that reflects comparatively really pore water, the twice filtration is arranged in the device, the pore water that extracts provides experimental basis without broken particle and impurity for carrying out the relevant analysis of cement-based material pore water.
Description of drawings
Fig. 1 is apparatus structure synoptic diagram of the present utility model.
Fig. 2 is the outer tube structure synoptic diagram of this device.
Fig. 3 is the aperture filter structure synoptic diagram of this device.
Fig. 4 is the interior wound packages facade structures synoptic diagram of macropore of this device.
Fig. 5 is the macropore inner core plan structure synoptic diagram of this device.
Fig. 6 is the power transmission barrel structure synoptic diagram of this device.
Embodiment
Below in conjunction with accompanying drawing to originally being described further.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the structure of hole solution extraction apparatus is: urceolus 1 is hollow cylinder, the upper end uncovered, the bottom is provided with stress surface 5 and drainage trough 6, drainage trough 6 has water delivering orifice 7, the position of water delivering orifice 7 is not higher than drainage trough 6, aperture filter screen 2 is hollow cylinder, the upper end uncovered, there is location-plate at two ends, the bottom has Φ 3～Φ 5 holes, aperture filter screen 2 is placed in the urceolus 1 and is on the stress surface 5, be placed with macropore inner core 3 in aperture filter screen 2, macropore inner core 3 is provided with at least apopore 8 and is on the stress surface 5 in the bottom, and the diameter of the apopore 8 on the macropore inner core 3 is greater than the bore dia of aperture filter screen 2, diameter is Φ 5～Φ 20, be placed with power transmission cylinder 4 and power transmission cylinder 4 and be on the stress surface 5 in macropore inner core 3, the area of the stress surface 5 of urceolus 1 is greater than the area of power transmission cylinder 4 lower ends, and urceolus 1 and power transmission cylinder 4 are made by cast iron or high strength steel.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, urceolus 1 plays pressure-bearing effect and hole solution drainage.Aperture filter screen 2 is in order in time hole solution to be got rid of when particle is pressed.Macropore inner core 3 can stay crushed granule foreign, in order to avoid impurity is arranged in the hole solution.Power transmission cylinder 4 evenly passes to the pressure of pressing machine on the particle.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the utility model provides the method for the saturated pore water of rapid extraction cement-based material, and step is as follows:
Full particle water surface water is filtered dry in the macropore inner core 3 of rear rapid load hole solution extraction apparatus, then be placed on the universal testing machine pressing plate, opening universal testing machine loads power transmission cylinder 4 pressing machinees, damaged by pressure to be forced into particle under 2.0kN/s～3.0kN/s speed, and continue to unload after 5 minutes～10 minutes, the particle pore water flows out by the apopore 8 of macropore inner core 3 under pressure, through small holes filter screen 2, flow in the drainage trough 6 of urceolus 1, water delivering orifice 7 connecting hoses by urceolus 1 flow in the beaker.
This method of the present utility model can make hole fast suction and can extract more convenient, more efficiently pore water than " truly " near saturated, in the solution without broken particle and impurity.
Claims (5)
1. the device of the saturated pore water of rapid extraction cement-based material, it is characterized in that: by urceolus (1), aperture filter screen (2), macropore inner core (3) and power transmission cylinder (4) form, urceolus (1) is hollow cylinder, the upper end uncovered, the bottom is provided with stress surface (5) and drainage trough (6), described drainage trough (6) has water delivering orifice (7), aperture filter screen (2) is placed in the described urceolus (1) and is on the described stress surface (5), in described aperture filter screen (2), be placed with macropore inner core (3), described macropore inner core (3) is provided with at least apopore (8) and is on the described stress surface (5) in the bottom, be placed with power transmission cylinder (4) and described power transmission cylinder (4) is on the described stress surface (5) in described macropore inner core (3).
2. the device of the saturated pore water of rapid extraction cement-based material according to claim 1, it is characterized in that: described urceolus (1) and power transmission cylinder (4) are made by cast iron or high strength steel.
3. the device of the saturated pore water of rapid extraction cement-based material according to claim 1 and 2, it is characterized in that: the area of the described stress surface (5) of described urceolus (1) is greater than the area of described power transmission cylinder (4) lower end.
4. the device of the saturated pore water of rapid extraction cement-based material according to claim 1 and 2, it is characterized in that: the position of described water delivering orifice (7) is not higher than described drainage trough (6).
5. the device of the saturated pore water of rapid extraction cement-based material according to claim 1 and 2, it is characterized in that: the diameter of the described apopore (8) on the described macropore inner core (3) is greater than the bore dia of described aperture filter screen (2), diameter is Φ 5～Φ 20, and there is Φ 3～Φ 5 in the hole of described aperture filter screen (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201320254277 CN203249794U (en) | 2013-05-10 | 2013-05-10 | Device for quickly extracting saturated pore water of cement-based material |
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| CN 201320254277 CN203249794U (en) | 2013-05-10 | 2013-05-10 | Device for quickly extracting saturated pore water of cement-based material |
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| CN 201320254277 Expired - Fee Related CN203249794U (en) | 2013-05-10 | 2013-05-10 | Device for quickly extracting saturated pore water of cement-based material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293024A (en) * | 2013-05-10 | 2013-09-11 | 湖南农业大学 | Method and device for rapidly extracting saturation pore water from cement-based material |
| CN105606792A (en) * | 2015-12-31 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Device and method for conducting automatic squeezing and sample compounding on concrete pore solution |
| CN105651554A (en) * | 2015-12-31 | 2016-06-08 | 江苏苏博特新材料股份有限公司 | Collection device and collection method of concrete pore solution |
| CN105806659A (en) * | 2016-05-24 | 2016-07-27 | 青岛理工大学 | Device for obtaining pore solution in cement-based material and method for analyzing components of pore solution |
-
2013
- 2013-05-10 CN CN 201320254277 patent/CN203249794U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293024A (en) * | 2013-05-10 | 2013-09-11 | 湖南农业大学 | Method and device for rapidly extracting saturation pore water from cement-based material |
| CN105606792A (en) * | 2015-12-31 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Device and method for conducting automatic squeezing and sample compounding on concrete pore solution |
| CN105651554A (en) * | 2015-12-31 | 2016-06-08 | 江苏苏博特新材料股份有限公司 | Collection device and collection method of concrete pore solution |
| CN105606792B (en) * | 2015-12-31 | 2017-06-20 | 江苏苏博特新材料股份有限公司 | A kind of concrete hole solution is squeezed automatically, the device and method of sample |
| CN105806659A (en) * | 2016-05-24 | 2016-07-27 | 青岛理工大学 | Device for obtaining pore solution in cement-based material and method for analyzing components of pore solution |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20150510 |
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| EXPY | Termination of patent right or utility model |