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Liquid extraction device and liquid extraction method for low water-binder ratio concrete

A liquid phase extraction and water-to-binder ratio technology, which is used in measuring devices, sampling, instruments, etc., can solve the problems of inaccurate results and inability to squeeze the liquid phase of concrete, and achieves convenient operation, efficient collection and sealed preservation, and low cost. Effect

Inactive Publication Date: 2017-06-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for extracting the liquid phase of concrete mainly include extraction method, soaking method and squeezing method. Both the extraction method and the soaking method perform equivalent treatment on the solution, and the obtained results are not accurate; and the existing squeezing method cannot be used due to the lack of design. Squeeze out the concrete liquid phase with a low water-to-binder ratio (0.2-0.4), such as the selection of instrument materials, the appropriate material will make the base and sample chamber have sufficient tightening force

Method used

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  • Liquid extraction device and liquid extraction method for low water-binder ratio concrete
  • Liquid extraction device and liquid extraction method for low water-binder ratio concrete
  • Liquid extraction device and liquid extraction method for low water-binder ratio concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Use P.I52.5 Portland cement, tap water. Mixing ratio (g): cement-1300, water-520

[0054] First install the sealing ring at one end of the low water-binder ratio concrete forming mold, inject the freshly mixed low water-binder ratio concrete (water-cement ratio 0.4) into the low water-binder ratio concrete forming mold from one end, and then add the sealing ring after vibrating and compacting; Take it out after 60 days of standard maintenance, cut the mold of the sample belt into a suitable small section in the cutting machine, and demold it for use; spray the lubricant on the power transmission shaft and the sample chamber; assemble the plastic in the electro-hydraulic pressure testing machine in turn. Cup, base, water system filter, sample chamber, sample and force transmission shaft, start the electro-hydraulic pressure testing machine to apply pressure, wait for the liquid phase to flow into the plastic cup, and then use the vacuum liquid phase integrator to process...

Embodiment 2

[0065] Use P.I52.5 Portland cement, tap water. Mixing ratio (g): cement-1300, water-390

[0066] First, install the sealing ring at one end of the low water-binder ratio concrete forming mold, inject the freshly mixed low water-binder ratio concrete (water-cement ratio 0.3) into the low water-binder ratio concrete forming mold from the other end, and add the sealing ring after vibrating and compacting; Take it out after 28 days of standard maintenance, cut the mold of the sample belt into a suitable small section in the cutting machine, and demould it for use; spray the lubricant on the power transmission shaft and the sample chamber; assemble the plastic cup in the electro-hydraulic pressure testing machine in turn , base, water system filter, sample chamber, sample and force transmission shaft, start the electro-hydraulic pressure testing machine to apply pressure, wait for the liquid phase to flow into the plastic cup, and then use the vacuum liquid phase integrator to proc...

Embodiment 3

[0076] Use P.I52.5 Portland cement, tap water. Mixing ratio (g): cement-910, water-390, fly ash 390

[0077] First, install the sealing ring at one end of the low water-binder ratio concrete molding mold, and inject the freshly mixed low water-binder ratio concrete (water-cement ratio 0.3, fly ash content 30%) mixed with 30% fly ash into the low water-binder ratio concrete from the other end. In the water-binder ratio concrete molding mold, add a sealing ring after vibration and tamping; take it out after 28 days of standard maintenance, cut the sample belt mold into suitable small sections in a cutting machine, and demould it for use; spray lubricant on the power transmission shaft and the sample compartment; assemble the plastic cup, base, water system filter, sample compartment, sample and force transmission shaft in the electro-hydraulic pressure testing machine in turn, start the electro-hydraulic pressure testing machine to apply pressure, and wait for the liquid phase t...

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Abstract

The invention discloses a liquid extraction device and a liquid extraction method for low water-binder ratio concrete. A forming mold filled with the low water-binder ratio concrete and seal rings at two ends outside are combined to form a sealed test mold for standard curing of the low water-binder ratio concrete, and the maintained sealed test mold is cut into small section samples through a cutting machine; a sample cabin is cylindrical, a liquid phase in the low water-binder ratio concrete is pressed and taken in the sample cabin by pressing a force transfer rod of a platen of an electro-hydraulic pressure tester, and a base where the sample cabin is carried is arranged on a working platform of the electro-hydraulic pressure tester; one end of a guide pipe is connected to a syringe needle while the other end of the guide pipe communicates with the top of a vacuum pipe; the collected liquid phase of the low water-binder ratio concrete is quickly sucked in vacuum and hermetically stored to prevent a liquid from being carbonized and evaporated. The device and method disclosed by the invention realize original taste extraction of the liquid phase of the low water-binder ratio concrete by way of sealed standard curing and high pressure squeezing, thereby laying a foundation for analyzing the liquid phase of the low water-binder ratio concrete.

Description

technical field [0001] The invention relates to a device and method for extracting a liquid phase of concrete with a low water-binder ratio (0.2-0.4), which belongs to the performance testing technology of cement concrete. Background technique [0002] Cement concrete is the most important building material today, widely used in construction, transportation, bridges, water conservancy, underground engineering and other fields. With the rapid development of the global economy and unprecedented construction scale, the consumption of cement concrete is increasing year by year, which is especially prominent in China, where the economy is developing rapidly. In order to meet engineering needs, the demand for concrete with low water-binder ratio (water-binder ratio refers to the ratio of water consumption per cubic meter of concrete to the amount of all cementitious materials) is increasing. However, modern concrete components are complex, and cementitious materials ( Including c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/34
CPCG01N1/286G01N1/34
Inventor 张云升钱如胜
Owner SOUTHEAST UNIV
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