Leave Your Message
Products Categories
Featured Products
SYD-8017A High Quality Automatic Vapor Pressure Tester Reid Method Astm D323 Standard

SYD-8017A High Quality Automatic Vapor ...
Rock Soil Vacuum Saturation Test Device

Rock Soil Vacuum Saturation Test Device
Soil Vacuum Saturation Device Portable Lab Vacuum Air Extractor with 220V for Soil Testing

Soil Vacuum Saturation Device Portable ...
Hammered Pipe Pile Penetration Meter

Hammered Pipe Pile Penetration Meter
Soil Vane Shear Test Apparatus Indoor Testing Vane Shear Test Equipment ASTM

Soil Vane Shear Test Apparatus Indoor T...
Multi-channel field soil temperature acquisition instrument Soil Analyzer 1GB Memory Logs Soil data acquisition

Multi-channel field soil temperature ac...
Soil Static Lateral Pressure Coefficient Tester for Soil Lab Testing Axial loading 0-10kN

Soil Static Lateral Pressure Coefficien...
Automatic soil direct shear test apparatus Soil Direct Shear Apparatus Soil Direct Shear Tester

Automatic soil direct shear test appara...
Uniaxial clay dispersibility pinhole tester accuracy ±0.5%

Uniaxial clay dispersibility pinhole te...
Automatic Soil Resilient Modulus Tester CE Certified Elastic Modulus Tester

Automatic Soil Resilient Modulus Tester...
Soil triplex level consolidation test apparatus (1).jpg

Soil triplex level consolidation test apparatus

Soil quadruple consolidation instrument is an experimental device used to determine soil consolidation characteristics, widely used in fields such as geotechnical engineering and geological engineering.

Determine the relationship between deformation and pressure or porosity and pressure of soil samples under lateral and axial drainage conditions. The relationship between deformation and time is used to calculate the unit settlement, compression coefficient, compression index, rebound index, compression modulus, consolidation coefficient, etc. of soil, and the measurement items are determined according to the needs of the project.

    Contact us
    product details

    Major function

    The soil four link consolidation instrument is mainly used to determine the consolidation characteristics of soil under load, including:

    -Consolidation coefficient: reflects the compression rate of soil under load.

    -Compression index: represents the relationship between soil compression and load.

    -Permeability coefficient: reflects the ability of water infiltration in soil.

    Soil triplex level consolidation test apparatus (4)

    Working principle

    Soil triplex level consolidation test apparatus (2)

    During the experiment, the soil sample was placed in a consolidation container, and a load was applied through a loading system. The soil consolidation consolidometer system recorded the deformation and pressure changes of the soil sample, and the data acquisition system saved the data. The control system adjusted the experimental conditions.

    Additional function

    By using electronic digital technology to transmit data, the geotechnical test data processing and acquisition system software automatically collects, records, and stores test data in real time. Compared with previous instruments, it saves the trouble of manual data reading and improves work efficiency.

    The purpose of this Consolidation Test experiment is to determine the deformation and pressure of the specimen under lateral and axial drainage conditions, or the relationship between void ratio and pressure, as well as the relationship between deformation and time. The compression coefficient and index, rebound index, compression modulus, consolidation coefficient, and pre consolidation pressure of the undisturbed soil are calculated, and the measurement items are determined according to the engineering needs.

    This soil consolidation test machine is mainly composed of a compression container, a pressurization device, weights, etc. It adopts a triple form and can perform three sets of tests at the same time. The force point adopts a bearing structure.

    Instrument features

    1. The dedicated geotechnical test data automatic collection system automatically collects, records, and stores vertical displacement and force value instrument data during the test process.

    2. The experimental process saves labor and time, and improves the efficiency of experimental work

    3. Leverage ratio amplification The weight of weights and labor intensity

    4. Compact structure, reliable and stable performance, easy to use

    Soil triplex level consolidation test apparatus (3)

    Parameter

    For Medium pressure consolidation instrument

    Parameters Details
    Sample area 30cm²  50cm²
    Lever ratio  1：12
    Vertical load  Farmar is loaded weight loaded  30cm²  12.5、25、50、100、200、300、400、800kpPa Eight levels loading
    50cm²  12.5、25、50、100、200、300、400 kPa seven  levels loading  
    Vertical deformation Dial gauge 0-10mm  precision 0.01mm  Three pieces optional
    Dimensions 650*500*900mm

    Parameter

    For High pressure consolidation instrument

    Parameters Details
    The sample area 30cm² /50 cm²
    Lever ratio ①24：1   30cm² ②20：1   50 cm²  
    Loading form   weight
    Maximum pressure 4000kpa  (30 cm²)  11 loading
    2000kpa  (50 cm²)  10loading  
    Pressure range 12.5kpa~4000kpa
    Dimensions steel structure  L820mm*W820mm*H1240mm

    FAQ（Frequently Asked Questions）

    1. Structure and Multi link Control Category
    Q: Are the three stations of the "triple" consolidation instrument completely independent? Do we still have to apply the same load?

    Leverage mechanical triple device: The levers of the three workstations are completely independent. You can add 25 kPa to cup 1, 100 kPa to cup 2, and even leave cup 3 empty without affecting each other.
    Pneumatic/electric automatic triple meter: depends on the design of the control pneumatic/electrical circuit. The standard laboratory triple instrument is equipped with three independent control valves/sensors, supporting the operation of three soil samples with completely different loading schemes.

    Q: What does the commonly used "lever ratio" in the triple consolidation instrument mean? How to calculate the actual force acting on the soil sample?

    The traditional mechanical triple consolidation instrument usually adopts a lever ratio of 1:10 or 1:12.
    Physical meaning: This means that when you hang a 1kg weight at the end of a lever and amplify it through the lever, the actual vertical pressure acting on the soil sample will become 10kg or 12 kg.
    Calculation precautions: When manually calculating pressure, in addition to multiplying the weight of the weight by the leverage ratio, it is also necessary to include the Dead Weight of the loading head and bearing plate. The current automatic instruments directly read the final force value from the pressure sensor (Load Cell), eliminating this conversion.

    2. Test operation and sample preparation Q: Do three samples have to be of the same soil type when placed on the triple instrument at the same time?
    Answer: It's not absolute. But in practical engineering, the most common approach is to take the core of the undisturbed soil in the same section of the borehole and cut three parallel samples.
    Reason: Soil has strong natural heterogeneity. By simultaneously running three parallel samples for consolidation, the data can be mutually confirmed, and outliers caused by the presence of large gravel particles or hidden cracks inside the soil sample can be eliminated, making the final compression coefficient a1-2 and pre consolidation pressure Pc more representative.

    Q: What are the requirements for filling porous stones?

    Saturated cohesive soil: Before the experiment, the permeable stone must be thoroughly boiled or soaked to saturation, and small internal bubbles must be expelled, otherwise the dry permeable stone will absorb the moisture in the soil sample, resulting in data distortion.
    Unsaturated soil/expansive soil: If the purpose of the test is to determine the natural expansion force, permeable stones usually need to be kept in a dry state in the initial stage until they are loaded to the predetermined load before being allowed to be filled into the water tank.

    3.Data anomalies and troubleshooting

    Q: During the experiment, one of the workstations of the triple instrument suddenly experienced a cliff like jump in data, while the other two were normal. What could be the reason?

    Because the triple device shares a set of mainframe or data acquisition bus, it can be located through the "exclusion method":
    Mechanical jamming: Check if the guide rod and pressure head of the workstation collide or get stuck with the outer wall of the consolidation container, causing the force to not be transmitted vertically.
    Poor sensor contact: Check if the displacement sensor (LVDT) plug corresponding to the workstation is loose.
    Leakage on the edge wall of the ring cutter: If the settlement of the sample is abnormally large, it may be due to insufficient cutting of the soil sample, and the soil is "squeezed" out from the edge of the ring cutter after loading.

    Q: What should be done if the lever of the lever type triple instrument suddenly tilts severely when loading high-level weights?

    Reason: The soil sample underwent significant compression deformation under heavy load, causing the lever to tilt downward and disrupting the horizontal state. When the lever is no longer horizontal, the actual force applied to the soil sample will decrease due to the angle tilt (non vertical force).
    Solution: Regular observation should be conducted during the experimental process. If the lever is found to be tilted, the Leveling Nut provided with the instrument should be used to slowly adjust and recalibrate the lever to a horizontal state. During this process, the action should be gentle and avoid generating severe vibrations.