Geosynthetics hydrostatic pressure tester for the measurement of impermeability of various geotechnical materials - Database & Sql Blog Articles

TSY-6

Geosynthetics resistance to hydrostatic pressure tester geosynthetics hydrostatic pressure tester

It is suitable for the measurement of anti-seepage performance of various geotechnical materials, with stable performance and convenient use.
Geosynthetics hydrostatic pressure tester

Stainless steel countertops are used.

Geosynthetics hydrostatic pressure tester

in accordance with

TGE50-2006

,

GB/T19979.1-2005

,

GB17642-2008

Anti-seepage performance of geosynthetics. National standard R&D design for hydrostatic pressure resistance.

Geosynthetics hydrostatic pressure tester

Technical Parameters:

1

Accuracy

0.5%

2

Perforated plate through hole

Ñ„

3mm

3

,

Water trap diameter

Ñ„

200mm

4

,greatest pressure

2.5MPa

5

Sample size

Ñ„

200mm

, effective cross-sectional area ≥

200

Square centimeter

6

, pressure pump automatic water supply, voltage

380v

7

, pressure adjustment range:

0~2.5MPa

8

,Dimensions:

60

0

×

75

0

×

1200

9

,Total Weight:

150Kg

three,

TSY-6

Geosynthetics resistance to hydrostatic pressure tester

[

Installation and use

]

:

1..

Pressure setting: press the set button “Back” after power on, press the shift button “

>

”

Press the adjustment button again"

+

"with"

--

” Adjust the value again, adjust it, press the set button “Back” to save it. After adjusting the lower limit value, press the set button to exit.

8

The hourly lower limit rises to

0.1MPa

Time clearing: re-do the experiment and keep pressing "

--

"The key is not released, the time value is displayed first.

10

After the second time is available from

0

When the hour starts, "!" can't be mistakenly pressed.

2.

Time review: Press the “—” key to change to the hour display. The upper limit is minute and the lower limit is second.

30

Return to the pressure display after a second,

3.

Zero adjustment: If there is no pressure after starting, if it does not return to zero, press it once to set it to zero. Do not press the clear button when there is pressure, and then zero after releasing the pressure.

.

4.

Open the water injection cover and add pure water

.

Until the tank is full

.

Start the pressurization and open the pressure regulating valve to allow water to flow into the high pressure chamber chassis to just overflow.

5.

The sample was placed on the net in the sump without wrinkles, and excess water was spilled to ensure that there were no bubbles in the gripper; the perforated plate was covered and the sample was evenly clamped.

Note: For specimens composited from textile materials and membranes, one side of the membrane should be facing the water surface; for composite materials with textile surfaces on both sides and the membrane in the middle, the specimen can be clamped to the side of the water surface. Part of the textile material is carefully peeled off, and a corresponding adhesive such as glass glue may be applied to the corresponding portion to ensure that the portion to be gripped does not leak water.

6.

Slowly adjust the inlet valve to raise the water pressure in the gripper to

0.1MPa

If the approximate range of hydrostatic pressure resistance of the sample can be estimated, the water pressure can be directly added to the lower limit of the range to start the test. Keep the above pressure at least

1h

Observe whether there is water seepage in the pores of the perforated plate. If the sample is not seeping water, per

0.1MPa

The step is pressurized step by step, and each level is kept at least

1h

When there is water seepage, it indicates that the sample has water seepage holes or cracks have occurred. The pressure before the recording is the hydrostatic pressure resistance value of the sample, accurate to

0.1MPa

.

7.

If used

GB/T19979.2

In the device specified in the above, the water seepage flow is used to determine whether water seeps. When the percolation flow rate is very small under a certain hydraulic pressure difference, it can be considered that there is no water seepage. When the seepage flow increases rapidly, it indicates that the sample has water seepage holes or damage has occurred, and the test can be terminated.

Note: When there is water droplet in the hole of the perforated plate, if there is no water seeping after wiping it off, it can be judged that this is caused by the overflow of the edge of the sample, and the test can be continued; if it is wiped off, there is still If the water seeps out, it can be judged that it is caused by water seepage of the sample, and the test can be terminated. If it is only necessary to judge whether the sample reaches a certain hydrostatic pressure value, it can be directly pressurized to this pressure value and kept at least

1h

If there is no water seepage, it is judged to meet the requirements. The rest of the sample was measured for hydrostatic pressure resistance according to the procedure. in case

3

Large difference in values

(

lower

2

Values ​​differ by more than

50%

), the test sample should be added.

8

,the above

3

The lowest value of the measured hydrostatic pressure values ​​is taken as the hydrostatic pressure resistance value of the sample; if the measured value exceeds

3

The lowest

2

The average value of the values ​​'if only

1

Lower value and lower than lower value

50%

Above, the value should be discarded.

9

The test results are calculated according to relevant standards.