Geotechnical and Soil Testing Equipment
LZJ-4S Fully Automatic Geotechnical Microcomputer-Controlled Four-Shear Direct Shear Apparatus
The LZJ-4S fully automatic geotechnical microcomputer-controlled four‑specimen direct shear apparatus is primarily used to determine the shear strength of soils. Typically, four soil specimens are tested under different vertical confining pressures—options include 400 kPa, 200 kPa, 100 kPa, and 50 kPa; for soft soils, 25 kPa and 12.5 kPa may also be selected—while horizontal shear forces are applied to measure the shear stress at failure. The shear strength parameters, namely the angle of internal friction and the cohesion, are then calculated in accordance with Coulomb’s law.
LZJ-4 Fully Automatic Direct Shear Apparatus (Four‑Channel, 7‑inch Color Touchscreen)
It is primarily used to determine the shear strength of soil. Typically, four soil specimens are tested under different confining pressures—400 kPa, 200 kPa, 100 kPa, and 50 kPa (with options for 25 kPa and 12.5 kPa in the case of soft soils)—by applying a horizontal shear force until failure occurs. The shear stress at failure is then measured, and the soil’s shear strength parameters—cohesion and the angle of internal friction—are determined using Coulomb’s law.
LZJ-4 Fully Automatic Intelligent Four-Shear Direct Shear Apparatus (Specimen Diameter 61.8 mm)
The intelligent four‑channel direct shear apparatus is primarily used to determine the shear strength of soil, as well as its internal friction angle φ and cohesion C.
MD-type material solid density meter
The high-precision electronic specific gravity meter for plastic pellets is ideally suited for applications in basic material density research, density testing of high-density products, density measurement of miniature components, quality and cost management and control, as well as the research and development of new material formulations.
MF-300P Vacuum Sealing Tester (All-in-One Touchscreen)
It is suitable for negative-pressure sealing and leakage testing, as well as microbial ingress testing, of pharmaceutical glass vials, lyophilization vials, plastic solid‑dose containers, blister packs, aluminum‑plastic soft pouches, syringes, pipettes, vacuum‑sealed bags, canned goods, powdered‑milk pouches, aluminum‑foil pouches, eye‑drop bottles, medical‑device packaging, liquid pouches, jelly cups, crimp caps, cosmetic bottle pouches, and other packaging materials. It is widely used in industries such as pharmaceutical manufacturers, pharmaceutical packaging material producers, drug‑testing centers, medical‑device companies, food enterprises, and cosmetics firms for seal integrity assessment.
NR-150 Geotextile Air-Bag Volume Meter
The air‑bag volumetric densimeter is a testing instrument used to determine the density of soil, suitable for field measurements of soils with maximum particle sizes less than 20 mm.
PZL-1 Free Swelling Ratio Tester
The soil free swell ratio tester is suitable for determining the free swell ratio of clay soils.
QT-1 Geotechnical Soil Cutting Disc
Purpose and Overview: During unconfined compressive strength tests and triaxial tests, this soil-cutting disc is used to cut the specimen to the required diameter.
SF Model Touchscreen Moisture Analyzer
A moisture analyzer is used to determine the water content of a sample. Based on the principle of thermogravimetric analysis, it measures the sample’s weight in real time. Once the test is initiated, an internal halogen lamp rapidly heats the sample, causing the moisture to evaporate and dry. During the drying process, the instrument continuously monitors the sample’s weight and displays the results.
SJL-1 Type Dual-Purpose Standard Portable Compaction Apparatus
Applicable Standard: The SJL‑I type portable compaction apparatus is used in earthwork projects such as hydraulic engineering, highway construction, airport runways, and foundation works.
SKDJ-1 Type CNC Multi‑Function Electric Compaction Tester
This instrument complies with the GB 7960‑87 standard and has been developed in accordance with the highway testing industry standard T0131‑93 issued by the Ministry of Transport. Its structural design and performance fully meet the specimen preparation requirements for the compaction tests specified in the California Bearing Ratio (CBR) test (T0134‑93) and the resilient modulus test (T0135‑93).
Purpose and Overview: This instrument is used to determine the shrinkage limit moisture content, linear shrinkage ratio, volumetric shrinkage, and shrinkage coefficient of clay during the drying process.
SYS-type digital display liquid-plastic limit combined tester
It is used to jointly determine the liquid limit and plastic limit of cohesive soils with particle sizes less than 0.5 mm—namely, the maximum and minimum water contents of the soil when it is in the plastic state—providing essential parameters for soil classification, calculation of natural consistency, and determination of the plasticity index for engineering applications.
SZS-type three-dimensional vibrating screen
This instrument is designed in accordance with the standards for sand and gravel used in ordinary concrete, JGJ 52-92 and JGJ 53-92, and its technical specifications are provided by the China Academy of Building Research, the principal drafting organization for these two standards.
TC-20B Dual-Digital Display Dual-Displacement Road Strength Tester (with Lever) (20T)
This instrument integrates advanced computer technology with high-precision sensor technology, offering simple operation, accurate test data, and stable performance.
TC-20C Dual-Digital Display Dual-Displacement Road Strength Tester (without lever) (20T)
This instrument integrates advanced computer technology with high-precision sensor technology, offering simple operation, accurate test data, and stable performance.
It is used for rapid determination of soil hardness, with intuitive measurement results. It measures soil penetration resistance to assess the compaction level at different depths.
TFB-1 Type Unsaturated Soil Stress–Strain Controlled Triaxial Apparatus
It is used to conduct triaxial tests on saturated and unsaturated soils under constant-stress and constant-strain control.
This testing machine employs a two‑column support structure, featuring a rational mechanical design that ensures high measurement accuracy. Its simple and elegant exterior makes it suitable for determining the unconfined compressive strength and indirect tensile strength (splitting test) of stabilized soil specimens containing various binders, as well as for measuring the bearing ratio of soils and pavement materials—including the determination of water‑immersion swelling—evaluating the thermal stability and resistance to plastic flow of asphalt mixtures through Marshall tests, and assessing stability and flow values. It can also be used for a variety of other tests requiring the application of vertical loads. In the event of a power outage or when no external power is available, manual operation is possible.
TS-1 Soil Moisture Rapid Tester
It is used to determine the moisture content of porous materials such as soil, sand, and cement.
TST-55 Permeameter (Constant-Head Permeability Test)
Purpose and Overview: Used to determine the coefficient of permeability of cohesive soils in permeability tests conducted under variable head conditions.
VH-1 Soil Moisture and Density Meter
It is used for the rapid determination of the natural moisture content and unit weight of undisturbed soil, or of moisture content and unit weight under other conditions.
VoJa-2910 Intelligent Analyzer for Particle Morphology of Manufactured Sand
The use of manufactured sand is becoming increasingly widespread; however, manufactured sand produced by different processes and equipment exhibits significant variations in particle shape and gradation, which markedly affect the workability and strength of concrete.
WG-Type Single-Lever Consolidometer (Portable)
Applicable Standard: The WG‑type single‑lever consolidation apparatus (portable) is used for soil compression tests to determine the relationship between soil deformation and applied pressure, or between void ratio and pressure, as well as the relationship between deformation and time, thereby enabling the calculation of parameters such as unit settlement, compression coefficient, rebound index, compression modulus, and consolidation coefficient.
WG-type Single-Lever Consolidometer (Triple-Cell Low-Pressure)
The standard single‑lever consolidation apparatus is used for soil compression tests to determine the relationship between soil stress and deformation, and to calculate parameters such as the coefficient of consolidation, the compression index, the rebound index, and the unit settlement.
WG-type Single-Lever Consolidometer (Triple-Cell High-Pressure)
The standard single‑lever consolidation apparatus is used for soil compression tests to determine the relationship between soil stress and strain, and to calculate parameters such as the coefficient of consolidation, the compression index, and the rebound index.
WG-type Single-Lever Consolidometer (Triple-Cell, Medium Pressure)
The standard single‑lever consolidation apparatus is used for soil compression tests to determine the relationship between soil stress and deformation, and to calculate parameters such as the coefficient of consolidation, the compression index, and the rebound index.
WY-4 Soil Penetration Resistance Tester
The rapid testing method is applied to quality control in the construction of lime‑stabilized subgrades, serving as a quick approach for determining the resilient modulus of such subgrades.
It is used to determine the swelling volume of cohesive soils during immersion and the moisture content at swelling equilibrium.
XD-1 Manual Soil Relative Density Tester
The purpose of the instrument test is to determine the maximum and minimum void ratios of cohesionless soils, which are used to calculate the relative density, thereby providing insight into the soil’s degree of compaction in its natural state or after compaction, as well as the stability of its particle structure.
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