Introduction
The direct shear and pull-out test system for geosynthetics is a
hydraulic integrated machine used for conducting direct shear and
pull-out friction tests on geosynthetics. It applies hydraulic
force to apply the normal load and controls the direct shear and
pull-out rates; integrating the hydraulic and direct shear pull-out
tests makes the operation more convenient and efficient; by
applying hydraulic pressure to the normal force, the pressure
application accuracy is improved, which is a first in China;
currently, the technology of normal alternating load is under
development.
Feature
The direct shear-pullout test system is an integrated machine with
both direct shear and pullout testing functions. By simply changing
a few tooling fixtures, both testing functions can be achieved.
The upper computer software controls the test process, integrating
the direct shear and pull-out interface friction. The software has
strong autonomy and can independently set the experimental
conditions according to the mainstream standards at home and
abroad. It is applicable to the mainstream national standards and
can independently complete data processing, achieving full data
export. It is convenient for studying the relationship between the
shear stress and displacement of the test sample and time, and is a
comprehensive interface friction testing system.
The horizontal loading device adopts servo electric cylinders to
achieve full digital speed closed-loop control. It has the
advantages of stable speed, wide speed range and high positioning
accuracy. The stretching speed can be set arbitrarily in digital
form.
The normal force loading device is achieved through manual
hydraulic or automatic electric cylinders, which is convenient,
reliable and ensures stable pressure.
By using the pin connection technology, it is possible to quickly
and easily replace the clamping devices required for testing.
It is equipped with various hardware and software protection
measures such as overload protection and over-stroke protection,
ensuring the safe and reliable operation of the equipment.
Compliant with standards
Straight-cut test: ISO 12957.1, GB/T 17635.1-1998, JTG E50 T1129,
SL/T235, etc.
Pull-out test: JTG E50 T1130, SL/T 235, etc.
ISO 12957 Geosynthetics Direct Shear and Pull Out Test System Soil
Materials Direct Shear Pull-out Friction Tester
