電動工具 ASTM ASTM-3080 2050のPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。ASTM ASTM-3080 2050 5 ページ。 Dead weight direct/residual shear device

ページを印刷する

This latest shear device utilizes a dead weight loading system (straight on and a 10: 1 beam) for applying the vertical load to the sample.

The device is a self-contained stand alone model that is compact and requires little floor space.

A load cell with digital readout is used for measuring shear forces. The vertical and shear displacement are measured with dial indicators.

Optional linear displacement transducer/readouts with analog outputs to data acquisition are available.

The basic device comes complete with 2.5" diameter shear rings and water chamber. Maximum shear displacement is 0.8" from the

home position). Travel is set with limit switches by the operator. A stepping drive motor and controller maintains the desired rate of strain.

The strain rate is easily set with digital thumb wheels and is maintained within 1% by a crystal stabilized clock. The thumb wheel settings

represents direct readings in inches per minute(0001 = .0001"/minute).

CONSTRUCTION

The Direct Shear was designed for harsh lab environments with a solid base (1.25" thick) for the loading and shear box assembly coupled

with a sturdy aluminum cabinet. The upright rods are stainless steel and the cabinet is painted with an enamel finish. The shear rings are

stainless steel and the water chamber is anodized aluminum for corrosion resistance. Cabinet legs are steel angle with floor mounting

holes.

SPECIFICATIONS

MAX VERTICAL

MODEL

LOAD

2050

750 lb (340 kg)

Horizontal Movement:

Rate of Strain: 2050

Overall Height:

Cabinet Height:

Length:

Depth:

Weight:

Power:

WEIGHT SET

8 TSF

1/8

1/4

WT SET

TSF

1119

The direct shear test may be run on any type of soil sample, but it is particularly adapted to cohesion materials. This machine can

also be used to establish the undrained shear strength of saturated, highly plastic cohesive soils under certain conditions.

The direct shear test is normally run as a strain controlled test. In order to obtain the effective stress parameters of any soil,

excluding the most pervious medium and fine sands, it is necessary to use a slow rate of shearing in order for induced pore

DEAD WEIGHT

DIRECT/RESIDUAL SHEAR DEVICE

MAX HORIZONTAL

SHEAR FORCE

750 lb (340 kg)

.8" Maximum

.0001" to .2999"/min

54"

36"

14.5"

180 lbs. (without wts.)

110 Volts 60 Hz

TSF

DEAD WEIGHT DIRECT SHEAR

ASTM-3080

TSF

See Page 3 for ratios