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Product Name: Soil Geotechnical Pressuremeter Model NO.: PY-5 Oil Cylinder Position: Under Power Source: AC380V Weight: 100-500Kg Control: Manual Control Display: Needle Loading Method: Dynamic Load Load Way: Mechanical Load Accuracy Grade: 0.5 Maxcapacity: <1000KN Type: Material Testing Machine Mass Scope of Workpiece: <900kg Max Diameter of Workpiece: <500mm Trademark: c-tech Transport Package: Standard Export Package Origin: China HS Code: 90248000 Product Description Pre-boring Pressuremeter/Menard PressuremeterTest Description:A pressuremeter test is an in-situ stress controlled loading test performed on the wall of a borehole using a cylindrical probe which can expand radially.For the test readings (volume variation based on controlled pressure), a stress-strain curve can be obtained, in the case of plane deformation, which yields:-the Menard pressuremeter modulus-the creep pressure-the Menard limit pressureStandard: ISO 22476-4, ASTM D-4719-00The pressuremeter test is an in-situ testing method used to achieve a quick measure of the in-situ stress-strainrelationship of the soil. In principle, the pressuremeter test is performed by applying pressure to the sidewalls of aborehole and observing the corresponding deformation.The pressuremeter consists of two parts, the read-out unit which rests on the ground surface, and the probe thatis inserted into the borehole (ground). The original Ménard-type pressuremeter was designed to be lowered intoa performed hole and to apply uniform pressure to the borehole walls by means of infl atable fl exible membrane.As the pressure increases, the borehole walls deform. The pressure is held constant for a given period and theincrease in volume required for maintaining the constant pressure is recorded. A load-deformation diagram andsoil characteristics can be deduced by measurement of the applied pressure and change in the volume of theexpanding membrane.From the test readings (volume variation based on controlled pressure), a stress-strain curve can be obtained,in the case of plane deformation, which yields :• the Ménard Pressuremeter modulus• the creep pressure• the Menard limit pressureMain ComponentsThe Control UnitEquipped with devices to precisely regulate thepressure applied to the probe and to read its volumechanges with pressure increments and time. Anitrogen cylinder provides the pressure source. Thebox stands on a tripod.The plastic tubingThis coaxial or twin tubing, fl exible, high resistancewith small dilatation, connects the probe to themonitoring box.The 3-cell probeIt includes a central measuring cell, fi lled with water.Its volume changes are read on the Control Unitvolumeter. The probe is totally protected by a rubbercover (different types regarding soils stiffness)which is inflated by the gas to form the 2 guardcells. Pressures applied to the 3 cells are balancedthrough the differential pressure regulator to ensurea true cylindrical deformation along the measuringcell.Main Technical ParameterModelPY-3PY-4PY-5Cross-sectionalarea of testwater tube11.75cm 214.19 cm 214.19 cm 2Volume of testtube435 cm 3638cm 3638cm 3Max. Testpressure2.5Mpa4Mpa5.5MpaNaked dia.Dia.50mmDia. With metalshieldDia. 55mmLength500mmTest length250mmRequiredborehole dia.Dia. 52~Dia. 58mmOriginal volumeof pressuremeterchamber491 cm 3Min.reading ofpressure gauge0.005MpaPressure sourceHigh-pressure nitrogen pipeHost dimension830×360×220mmHost weight28kg
