Automatic pressure regulating concrete impermeability test procedure - Database & Sql Blog Articles

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Automatic pressure regulating concrete impermeability meter

experiment procedure:

1

The test piece is formed and cured. It is formed by forming mold (also called sub-mold) according to the material ratio required by the design, and then cured according to the specifications of the Ministry or international standards.

2

The test body was taken out of the curing room one day before the test, and the test mold was heated to

40

°C

The left and right sides of the wax are heated to completely melt, and then the circumference of the test piece is rolled in the solution for one week (the wax is strictly prohibited on both ends of the test piece), and the sample with the wax is pressed into the test piece by a press.

3

Penetration test

(

1

) Irrigation: Unscrew the nut of the water injection nozzle, open each door at the same time, place the funnel on the water injection nozzle, fill the water tank to fill it, and require the test mold chassis to be filled with water (the role is to exclude the tube) Air in the road system) At this time, six cut-off doors leading to the test mold can be closed.

(

2

) Installation of test mode: The test piece of the sealed test piece is securely mounted on the instrument.

(

3

At the time of the test: according to the new specification

twenty four

After the hour is finished, for example, the project requires the test block to be pressurized.

0.8MPa

, the lower limit is set to

0.6MPa

Constant pressure

8

After the hour, the lower limit is automatically boosted to

0.7MPa

And constant pressure

8

Hour, the lower limit is automatically boosted to

0.8MPa

,

8

Finished after hours.

(

4

) when the end faces of the six specimens have

2

When the water is permeated by the pressurized water, the water pressure at this time is recorded as the pressure value of the test.