Dilatometer marchetti test apparatus(DMT)

Dilatometer marchetti test apparatus(DMT)

Description:

DMT can supply the investigator with many important parameters as follows: lateral pressure coefficient Ko , pore water pressure U, untrained shear strength Cu , effective angle of internal friction Φ , coefficient of subgrade reaction Kn, over-consolidation ratio OCR , compression modulus, modulus of elasticity, shear modulus, layer classification, compaction control, unit weight, determination of liquefaction of saturated soil and so on. Generally the flat dilatometer can be pressed into earth by CPT machine, and can also by the hammer of SCPT machine.

The main part of the flat dilatometer consists of a flat stainless thin steel blade with a circular expandable steel membrane of 60 mm diameter on one side. The test involves driving this steel blade into the ground, inflate the steel membrane and measure the corresponding pressure and deformation. Penetration of the steel blade is usually done using common in-situ penetration equipment as for instance those used for Standard Penetration Test. The membrane of the blade is connected to a gas pressure unit on the surface which provide the pressure to inflate the steel membrane.

Parameters:

1. Flat shovel expansion test probe: length 230-240mm, width 95mm, thickness 15mm;

2. Steel film diameter: 60mm;

3. Rated air pressure: 6MPa;

4. Test depth: 0-50m;

5. Full process indication error: ± 0.2% F.S

6.Test result hole storage quantity can reach 9999 No.

DMT-W3 Dilatometer Marchetti Test Kit complete set includes below items:
DMT-W3/01 Control unit
DMT-W3/02 Control Recorder
DMT-W3/03 Pressure regulation valve
DMT-W3/04 Air supply tube
DMT-W3/05 Solid probe head
DMT-W3/06 Flat blade
DMT-W3/07 Membrane
DMT-W3/08 Membrane gasket
DMT-W3/09 Standard pneumatic-electric cable
DMT-W3/10 Calibration cable
DMT-W3/11 Air pressure gauge
DMT-W3/12 Probe upper connector
DMT-W3/13 Calibration unit
DMT-W3/14 English operation manual
DMT-W3/15 Tool parts includes below items
DMT-W3/1501 Monkey spanner 6 inch
DMT-W3/1502 0.5mm Thickness gauge
DMT-W3/1503 9—11 Hard wrench
DMT-W3/1504 150mm Ruler
DMT-W3/1505 10 inch Large spanner
DMT-W3/1506 Ring screw
DMT-W3/1507 4 inch Instrument driver
DMT-W3/1508 Wire-cutter
DMT-W3/1509 Stainless steel tweezer
DMT-W3/1510 Pulling tool
DMT-W3/1511 BrushSealing parts
DMT-W3/1512 Sealing parts