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Salt fog carbonization test device and test method thereof

A technology of salt spray carbonization and test equipment, which is applied in the direction of measuring equipment, material inspection products, instruments, etc., can solve the problems of high installation and maintenance costs, high cost, and large floor space, so as to reduce test costs, increase use functions, The effect of improving utilization efficiency

Active Publication Date: 2016-06-15
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the large difference between the salt spray test environment and the real environment in the prior art, failure to combine the salt spray test and carbonization test, and the existing salt spray and carbonization test devices are relatively bulky, expensive, and occupy an area Large size, high installation and maintenance costs, low effective utilization of internal space and low value of equipment recycling, we provide the following solutions:

Method used

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  • Salt fog carbonization test device and test method thereof
  • Salt fog carbonization test device and test method thereof
  • Salt fog carbonization test device and test method thereof

Examples

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Effect test

Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, a salt spray carbonization test device includes a test box, a salt spray system, a carbon dioxide supply and control system, and the test box includes a box body 1, a sample holder 3, a constant humidity system 4 and a salt spray settlement measurement device ; The salt spray system includes a liquid supply and liquid level control system, a salt spray generation chamber 6, a salt spray diffuser 2 and a wind system; the salt spray diffuser 2 of the salt spray system is located at the top center of the test chamber, and the The carbon dioxide supply and control system is connected to the test chamber through the carbon dioxide air duct 5 .

[0032] Further, the constant humidity system includes an open plastic box filled with saturated saline solution and a valved saturated saline solution inlet pipe 14 and a liquid discharge pipe 15, and the liquid inlet pipe 14 and the liquid discharge pipe 15 pass through the bottom of the test cham...

Embodiment 2

[0050] Embodiment 2: Concrete Carbonation Salt Spray Test

[0051] Prepare a sodium chloride solution with a mass fraction of 5%, and inject it into the brine tank. Adjust the liquid level of the salt spray chamber so that the salt spray settlement in the salt spray chamber is 0.002mL / 80cm 2 h, to maintain this liquid level; inject an appropriate amount of saturated sodium chloride solution into the liquid storage tank of the constant humidity system; place the concrete test block coated with epoxy resin on five sides on the sample rack with the exposed side facing up; Set it to 20%; start the test device, and after 60 days of the test, take out the test block and take out the layered powder for sampling, and test the chloride ion concentration and pH of the sample preparation solution (to characterize the degree of carbonization). The measured data are shown in Table 1:

[0052] Table 1 Salt spray carbonization test data

[0053]

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Abstract

The invention discloses a salt fog carbonization test device and a test method thereof. The salt fog carbonization test device comprises a test chamber, a salt fog system and a carbon dioxide supply and control system, and the test chamber comprises a chamber box, a sample support, a constant humidity system and a salt fog settling volume measuring device; the salt fog system comprises a liquid supply and liquid level control system, a salt fog generation compartment, a salt fog diffuser and a wind power system; the salt fog diffuser of the salt fog system is located in the middle of the test chamber, and the carbon dioxide supply and control system is connected with the test chamber through a carbon dioxide air duct. According to the salt fog carbonization test device and the test method thereof, constant humidity adjustment in the test chamber can be achieved at a low cost under the test condition of constant temperature, the utilization rate of the test space is greatly increased, and the test cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of salt spray carbonization test, and in particular relates to a salt spray carbonization test device and a test method thereof. Background technique [0002] Reinforced concrete structure is the most common form of building structure. The reinforced concrete structure in the coastal salt spray area is subject to carbonation and chloride ion erosion, which leads to corrosion of steel bars, causing durability problems of building structures, shortening the service time of building structures and affecting their use. It is of great significance to study the concrete carbonation process and chloride ion erosion process in the salt spray environment for the durability design and service life prediction of building structures. In the laboratory, artificial salt spray simulation test and accelerated carbonation test were used to study the chloride ion transport process and carbonation resistance of concrete. However, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N33/38
CPCG01N17/002G01N33/383
Inventor 刘军王晓东区光烽邢锋韩宁旭
Owner SHENZHEN UNIV