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TFB-1 Type Unsaturated Soil Stress–Strain Controlled Triaxial Apparatus

Name: TFB-1 Type Unsaturated Soil Stress–Strain Controlled Triaxial Apparatus
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

It is used to conduct triaxial tests on saturated and unsaturated soils under constant-stress and constant-strain control.

Category:

Geotechnical and Soil Testing Equipment

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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TFB-1 Type Unsaturated Soil Stress–Strain Controlled Triaxial Apparatus

Description

Product Introduction:

It is used to conduct triaxial tests under constant‑stress and constant‑strain conditions for both saturated and unsaturated soils. For saturated soils, the test procedures include UU, CU, CD, anisotropic consolidation, isotropic consolidation, K0, stress‑path, and stress‑controlled tests; it can also perform triaxial tests on unsaturated soils by controlling matric suction. The instrument’s components are controlled by a microcontroller, enabling standalone operation as well as compatibility with computer‑based control, software management, and data acquisition. This device is a multifunctional, flexibly controllable triaxial testing system.

Technical specifications:

Project	Parameter
Axial force	0–30 kN, measurement accuracy ±1%
Control method	a. Strain-controlled: 0.002–4 mm/min ±10%; b. Constant-stress control: 0 kN to 30 kN, with a control accuracy of ±1%
Soil sample specifications	Φ39.1×80mm, Φ61.8×125mm
Ambient pressure	0–0.8 MPa, control accuracy ±0.5% FS, setpoint (0.01–0.8 MPa)
Back Pressure 1	0–0.8 MPa, control accuracy ±0.5% FS, setpoint (0.01–0.8 MPa)
Back Pressure 2	0–0.8 MPa, control accuracy ±0.5% FS; setpoint (0.01–0.8 MPa); a. Constant-pressure control method; b. Constant flow rate control mode (0.02–30 mL/min)
Change in the external volume of the soil sample	0~100ml
Internal volume change	0-50ml
Displacement measurement range	0-30mm
Air permeability of the clay panel	<500kPa
Power supply voltage	220V±10%

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

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★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

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From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

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