This test is used to determine the shear strength of a soil sample subjected to orthogonal stress with respect to the failure plane. The sample is enclosed within a robust metal box horizontally split into two halves and provided with a vertical plunger. The shearing stress is created by imposing a movement of the lower half of the shear box, whilst applying a static load to the load plunger. In the more refined machines, called “controlled displacement equipment”, the variables that may be measured during the test are as follows: vertical strain, horizontal strain, shearing stress whilst the vertical force and displacement speed are kept absolutely constant.

Digital direct shear box, floor mounted with carriage assembly and load hanger with 10:1 lever loading device.

FEATURES

Microprocessor controlled digital stepper motor.
Control via the digital display with keyboard.
Return datum facility.
Fully steplessly variable speed over the range of 0.00001 to 9.99999mm/minute.
RS232 port
Forward/reverse travel limit switches.
Will accept either analogue or digital measuring devices.

The pole shear test device is also called the residual resistance test device, and with this device, the shear resistance of the compressed or disturbed soil samples is determined and they are tested by means of the parameters.

The direct shear tester is among the high-performance, specially designed devices used to measure the softening effect caused by shearing along the horizontal plane under load, as well as the residual shear resistance.

ASTM D3038, BS 1377 and AASHTO T236; Designed in accordance with BS-1377-7 standards, these devices, which are very useful for people who use these products, especially for operators, save both time, economy and labor at the same time.

The use of products designed and produced in accordance with the standards, especially during the processes, is very important at this point and determines the accuracy of the data to be obtained.

What are the Main Features of the Pole Shear Tester?

The pole shear tester, which has a weight of 50 kg, is very functional in terms of its basic features and is also among the products that have the capacity to use it for a long time thanks to the shear box tools and the leakproof feature of the sample.

Thanks to the arm on this product, it is possible to increase the vertical load on the cutting box, and it is generally seen as an arm that can withstand up to 50 kilograms. The product has a total load performance of 5000 newtons.

The product also has a high resolution servo motor and gearbox and is used to test the residue resistance, slip resistance and softening effect. Thanks to the low loading started, it is possible to load even at a low level, and it is quite easy to make the minimum level measurements better.

Circular section models have 60 mm, 100 mm and 2.5 inch cutting boxes, and square section models have 60 mm and 100 mm cutting boxes.

These products, made with a load cell with a capacity of 5 KN, consist of 2 porous stones, 2 flat grid plates and 2 perforated grid plates.

What Does a Pole Shear Tester Do?

The direct shear test device used during the residual resistance test gives effective results, especially thanks to its high performance, and since it is specially designed for the processes, it has different options according to all processes.

These devices, which have steplessly high value measurement performance, can be used reliably and at the same time, there is no danger in terms of occupational health and safety.

During the experiment on the sample, the sample is rotated and it prevents the leakage of water between it and reveals the durable structure of the rigid side walls between the shear box. In addition to this, all the test processes carried out due to the corrugated base plate and its high resistive power are completed professionally.