Continuous measuring device and method for ammonia gas releasing amount in concrete

A measuring device, a technology for concrete, applied in the measurement of color/spectral properties, analysis by chemical reaction of materials, material analysis by observing the effect on chemical indicators, etc., can solve the problem of unmeasured ammonia concentration, systematic Errors, failure to obtain test data, etc.

Pending Publication Date: 2019-05-31
CHINA THREE GORGES PROJECTS DEV CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 3. The ammonia gas-sensing electrode can only measure the ammonia concentration in the solution under alkaline conditions, but the absorption liquid in the invention of "a device for measuring the amount of ammonia released over time in concrete" has always been in acidic conditions, so it cannot be measured in practice The concentration of ammonia in it; and if the absorption solution in this invention is replaced by alkaline conditions, the...

Method used

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  • Continuous measuring device and method for ammonia gas releasing amount in concrete
  • Continuous measuring device and method for ammonia gas releasing amount in concrete
  • Continuous measuring device and method for ammonia gas releasing amount in concrete

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Embodiment 1

[0060] see figure 1 , in an embodiment of the present invention, a continuous measuring device for ammonia release in concrete, comprising a data acquisition system 1, an experimental box 8, an ammonia absorption device 14, an air supply system 15, a temperature control system 16 and an automatic detection of ammonia concentration System 17, the data acquisition system 1 is a host computer, and the two ends of the data acquisition system 1 are respectively connected with the temperature control system 16 and the ammonia concentration automatic detection system 17, and the temperature control system 16 includes a temperature controller and a temperature control system. Sensor 2, the temperature controller is connected to the host computer through wires, the temperature controller is also connected to the temperature sensor 2 through wires, and the ammonia concentration automatic detection system 17 includes a fixed ammonia detector and an ammonia concentration sensor 3. The fix...

Embodiment 2

[0063] The invention discloses a method for continuously measuring ammonia release in concrete. The freshly mixed concrete is poured into a test box 8, and the environment conditions of temperature and wind speed can be adjusted in the test box 8 to continuously measure the release of ammonia in concrete in real time.

[0064] The mix ratio of fresh concrete is shown in Table 1:

[0065] Table 1 Concrete mix ratio

[0066]

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PUM

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Abstract

The invention, which relates to the technical field of ammonia gas detection, discloses a continuous measuring device for the ammonia gas releasing amount in concrete, thereby solving a problem of theexisting device cannot continuously absorb and measure ammonia gas in concrete. The device comprises a data acquisition system, an experimental box, an ammonia gas absorption device, an air supply system, a temperature control system and an automatic ammonia concentration detection system. The data acquisition system is a host computer; and the two ends of the data acquisition system are respectively connected with the temperature control system and an automatic ammonia gas concentration detection system. In addition, the invention also discloses a continuous measuring method for the ammoniagas releasing amount in concrete. According to the invention, the vibration and hardening process of concrete is simulated by regulating the environmental conditions of the temperature and wind speedin the experiment box, thereby realizing real-time detection of the ammonia gas releasing amount in the whole process of concrete pouring and maintenance and thus filling the blank of the ammonia gasreleasing amount detection method in the concrete pouring process.

Description

technical field [0001] The invention relates to the technical field of ammonia gas detection, in particular to a device and method for continuously measuring ammonia gas release in concrete. Background technique [0002] The utility model patent with the application number "CN201720324604.0" and the publication number "CN206618714U" discloses a device for measuring the amount of ammonia released over time in concrete. The sample container, the air outlet of the blower is connected to the air inlet of the sealed box through the ventilation hose, the air outlet of the sealed box is connected to the upper end of the air inlet pipe set on the glass washing bottle through the air hose, and the lower end of the air inlet pipe is inserted into the Into the absorption solution contained in the glass washing bottle, the glass washing bottle is also provided with an outlet pipe communicating with the outside air and an ammonia gas-sensitive electrode for measuring ammonia gas, and the...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/78
Inventor 张思佳李文伟吴葵孔祥芝陈改新纪国晋朱正贵刘艳霞田军涛
Owner CHINA THREE GORGES PROJECTS DEV CO LTD
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