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土工布耐静水压测定

土工布耐静水压测定依据SL/T235-1999、JTGE50-2006、
GB/T19979.1-2005土工合成材料防渗性能.耐静水压的国家标准研发设计。适用于各类土工材料的防渗性的测量,性能稳定,方便实用.

  • 型号:YT080

  • 产品参数
  • 型号:YT080


 

土工布耐静水压测定依据SL/T235-1999、JTGE50-2006、

GB/T19979.1-2005土工合成材料防渗性能.耐静水压的国家标准研发设计。适用于各类土工材料的防渗性的测量,性能稳定,方便实用.

Geosynthetics hydrostatic pressure tester based on SL/T235-1999, JTGE50-2006,
GB/T19979.1-2005 Geosynthetics anti-seepage performance. National standard R & D and design of hydrostatic pressure resistance. Applicable to the measurement of impermeability of various geotechnical materials, stable performance, convenient and practical.


土工布耐静水压测定技术参数:

★精度0.5%

★多孔板透孔ф3mm

★多孔板直径ф200mm

A大压力2.5MPa

★试样尺寸ф200mm,有效截面积≥200平方厘米

★压力泵自动供水,电压380v

★压力调整范围:0~2.5MPa

★外型尺寸:600X750X1200mm

★整机重量:150Kg

Geosynthetics resistance to hydrostatic pressure tester technical parameters:
★ accuracy 0.5%
★Perforated plate through hole ф3mm
★Perforated plate diameter ф200mm
★A large pressure 2.5MPa
★ sample size ф200mm, effective cross-sectional area ≥ 200 square centimeters
★ pressure pump automatic water supply, voltage 380v
★ Pressure adjustment range: 0~2.5MPa
★Outer size: 600X750X1200mm
★ Machine weight: 150Kg


土工布耐静水压测定使用方法

★压力设定:开机后按设定键“回”按移位键“>” 再按调整键“+”和“--”再调整数值,调好后,按设定键“回”存入。再调整完下限数值后,按设定键可退出。8小时下限上升为0.1MPa时间清除:重新做实验,持续按“--”键不释放,首先显示时间值,10秒后时间可从0小时开始,“!”工作时不可误按。★时间查阅:按“—”键压力变为小时显示,上限为分钟,下限为秒。30秒后回到压力显示

★零点调整:开机后在无压力时如不回零,按动一次,可置零。有压力时勿按清零键,放压后再置零.

★打开注水盖板,加入纯净水.至水箱注满为止.启动加压,打开调压阀,使水流入高压仓底盘至刚好溢出。

★将试样无褶皱地放在集水器内的网上,溢出多余水以确保夹样器内无气泡;将多孔板盖上,均匀地夹紧试样。

Geosynthetics resistance to hydrostatic tester use:
★ Pressure setting: press the set button “Back” after power on, press the shift button “>” and then press the adjustment buttons “+” and “--” to adjust the value. After adjusting, press the set button “Back” to save . After adjusting the lower limit value, press the set key to exit. The 8-hour lower limit rises to 0.1 MPa. Time clear: Re-do the experiment, keep pressing the “--” button to not release, first display the time value, after 10 seconds, the time can start from 0 hours, “!” can not be mistakenly pressed during work. ★ Time review: Press “—” to change the pressure to hour, the upper limit is minute and the lower limit is second. Return to pressure display after 30 seconds
★ Zero adjustment: If there is no pressure after starting, if it does not return to zero, press once to set zero. Do not press the clear button when there is pressure, and then zero after releasing.
★ Open the water injection cover and add pure water. When the water tank is full, start the pressure and open the pressure regulating valve to make the water flow into the high pressure chamber chassis to just overflow.
★ Place the sample without wrinkles on the net inside the water collector, overflow excess water to ensure no air bubbles in the clamp; cover the porous plate and evenly clamp the sample.

 

土工布耐静水压测定操作规程

★缓慢调节进水阀,使夹样器内的水压上升至0.1MPa,如能估计出样品耐静水压的大致范围,也可直接将水压加到该范围的下限开始测试。保持上述压力至少1h,观察多孔板的孔内是否有水渗出。如试样未渗水,以每0.1MPa的级差逐级加压,每级均保持至少1h,直至有水渗出时,表明试样有渗水孔或已出现破裂,记录前一级压力即为该试样的耐静水压值,精确至0.1MPa。 .

★如果使用GB/T19979.2中规定的装置,则以渗水流量判断是否渗水。在一定水力压差下渗流量极小时则可认为没有渗水,当渗流量急速增加时表明试样有渗水孔或已出现破坏,试验可以终止。

★多孔板的孔内出现水珠时,如将其擦去后不再有水渗出,则可判断这是试样边缘溢流造成的,可继续试验;如将其擦去后仍有水渗出,则可判断是由于试样渗水造成的,试验可以终止。如只须判断试样是否达到某一规定的耐静水压值,则可直接加压到此压力值并保持至少1h,如没有水渗出,则判定其符合要求。按照程序测定其余试样耐静水压值。如果3个值差异较大(较低的2个值相差超过50%),则应增加测试试样。

★以上3个试样实测耐静水压值中的A值作为该样品的耐静水压值;如果实测值超过3个,以A2个值的平均值计’如只有1个值较低且低于次低值50%以上,则该值应舍弃。

 

注:对于由纺织材料与膜材复合的试样,应使膜材一侧面对水面;对于两面是纺织材料而膜处于中间的复合材料,可将试样面对水面一侧边缘被夹持环形部分的纺织材料小心地剥去,也可在相应部分涂上玻璃胶等粘合剂,以确保被夹持部分不漏水。

Geosynthetics resistance to hydrostatic tester operating procedures
★ Slowly adjust the inlet valve to increase the water pressure in the clamp to 0.1 MPa. If the approximate range of the hydrostatic pressure of the sample can be estimated, the water pressure can be directly added to the lower limit of the range to start the test. While maintaining the above pressure for at least 1 h, it was observed whether or not water permeated in the pores of the perforated plate. If the sample is not water-permeable, pressurize step by step with a step of 0.1MPa, and each stage shall be kept for at least 1h until water seeps out, indicating that the sample has water seepage holes or cracks have occurred. The hydrostatic pressure resistance of the sample is accurate to 0.1 MPa. .
★ If the device specified in GB/T19979.2 is used, it is judged whether water seepage is caused by the seepage flow rate. When the seepage flow 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.

★When water droplets appear in the hole of the perforated plate, if there is no water seeping out 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 water. Exudation can be judged to be 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 for at least 1 h. 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. If the three values differ greatly (the lower two values differ by more than 50%), the test specimen should be added.
★ The A value in the measured hydrostatic pressure values of the above three samples is taken as the hydrostatic pressure resistance value of the sample; if the measured value exceeds 3, the average value of the two values of A is as follows: If it is lower and lower than the lower low value by more than 50%, the value should be discarded.

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 clamped portion does not leak water.


土工布耐静水压测定

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