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    Hole filling density tester

    Testing object: prestressing bridge anchor cable (rod)
    Testing content: grouting compactness
    Affiliate classification
    Product parameters
    Device name
    Hole filling density tester
    Equipment model

    Results and technical characteristics


    Equivalent mass method (TTEM): testing the tension of a buried anchor/rod;

    Full-length attenuation method (FLEA): Qualitative test of the porosity of the prestressed beam;

    Equivalent Wave Velocity Method (IEEV): Positioning and type discrimination of grouting defects of prestressed beams;

    Transfer Function Method (PFTF): Characterizes the grouting defects in the vicinity of the anchor head of the prestressed beam. According to this, not only can the effective tension of various anchor cables/rods be tested, the grouting compactness of the prestressed beams can be quickly qualitatively detected, accurately positioned and typed, and at the same time, the concrete material (structure, test piece), beam thickness It can also be tested.


    According to the standard




    1. Technical Specifications for Non-destructive Testing of Grouting Density in Prestressed Tunnels of Shanxi Province (DB14/T 1109-2015)

    2. Technical specification for dense grouting quality inspection of bridge prestressed tunnels in Hebei Province (DB13/T 2480—2017)

    3. Technical Specifications for Quality Inspection of Prestressed System of Highway Concrete Structure Bridges in Fujian Province (DB35/T 1638—2017)


    Full length wave velocity method


    Full length decay


    product description







    Sichuan Shengtuo Testing Technology Co., Ltd. provides a channel grouting compactness quality detector.
    The device is mainly used for the grouting compactness detection of prestressed bridge cables. The full-length wave velocity method (FLPV) and the full-length attenuation method (FLEA) can be used to quickly and qualitatively detect the pipe compactness; the impact echo equivalent wave velocity method (IEEV) can be used to locate the grouting defects. FLEA and IEEV have applied for invention patents.






    Wide range: suitable for 0.1-1m thick beam and slab



    High Precision: AI Assisted Decision

    Automation and Accuracy of Judgment Results



    Wave speed method


    Test object: prestressed bridge anchor (rod)

    Test content: tunnel grouting compactness

    Test items


    Related patents

    Patent name: A test method for grouting density of bridge

    prestressed tunnel based on elastic wave energy dissipation rate


    Patent Name: A Non-destructive Testing Method for Bridge Prestressed Hole Grouting Density


    Patent Name: A Nondestructive Testing Method for Testing Tension of Prestressed Anchorage System

    Patent No:200910197828.X

    Patent No:ZL200910177856.5

    Patent No:ZL201110342911.9

    Patent Name: Technology for reducing the test error of elastic wave signals by using two-direction vibration

    Patent No:ZL200510021851.5

    Patent No:ZL 201110155408.2

    Patent name: A method and system for testing the hardness of bridge prestressed tunnel grouting



    Positioning test and defect type

    Tested continuously (excited and trusted) in the form of a scan along the upper or side of the pipe, and the condition of the grout in the pipe is tested by the characteristics of the reflected signal.

    Test principle and method

    Qualitative test

    The method can quickly detect the tightness of the grouting of the tunnel, and test the steel strands exposed at both ends of the anchor cable.
    In one test, the above three methods (FLEA, FLPV, PFTF) can be tested simultaneously, and the test time for completing one channel is within 5 minutes.


    Hole filling density tester

    Corresponding parameter set not found, please add it in property template of background
    1 ★Provide database management services, can be docked with BIM system to achieve the visualization of test results model; with the database, can be linked to test results cloud AI (artificial intelligence) analysis
    2 ★operating system:windows
    3 ★Waveform noise processing and spectrum analysis: Mobile smoothing、BPF、EMD、FFT、MEM
    4 ★Test contents: rapid qualitative test and accurate positioning test for grouting quality of prestressed pipeline
    5 ★Test methods: longitudinal qualitative (FLEA, FLPV, PFTF), longitudinal positioning (IEEV, IERS), vertical and horizontal channels(VDFM)
    6 ★Coupling of grouting location: high damping sensor support
    7 ★Number of channels: 2 channels (using VMC technology to expand to multiple channels), triggering channels and receiving channels are interchangeable
    8 ★Signal processing technology: reducing residual vibration signals; integrating processing and averaging processing
    9 Platform: Integrated Platform
    10 The test area of grouting density is: qualitative test can reach 150m; positioning test is not restricted by pore length
    11 Data acquisition: support for touch and wireless dual mode operation; support for single and continuous dual mode sampling 
    12 working temperature:0~45℃  
    13 Sampling accuracy: floating point interpolation is compensated to 24 bits
    14 Sampling frequency: 500KHz, adjustable                      
    15 Maximum collection points: 20000, adjustable
    16 Maximum / minimum voltage can be displayed:10V/0.0001V
    17 Display: LCD display1280*800 
    18 Graphics processing: isoline, shading chart, elastic wave radar scanning
    19 The same screen indicates the maximum waveform number: 300 (waveform acquisition point 2048, sampling interval 4us)
    20 Location information: supporting GPS positioning

    Wide area vibration signal pickup device



    Acceleration sensor


    Acceleration sensor



    Voltage cable

    Charge cable




    Charge cable

    Wide area vibration signal pickup device


    Impact hammer


    Verification of T-beam thick plate of Anjiang Expressway


    Detection of Grouting Density in Shaanxi Province

    Verification of Small Box Girder of Zhenglu Expressway in Henan Province


    Verification of T-beam of Hunan Longyong Expressway

    Verification of Continuous Cast-in-situ Beams on Hunan Railway

    Verification of Thick Wall Retaining Wall of Aqueduct in South-to-North Water Transfer Project


    Verification of Continuous Rigid Frame Thick Web of Guizhou-Chongqing Railway

    Shandong Jining Continuous Rigid Frame Bridge in Service

    Verification of Shaanxi Tonghuang High Speed Small Box Girder

    Verification of cast-in-place slab of Jiyun Bridge in Tianjin

    Verification of web of Shaozhu high-speed box girder in Zhejiang Province

    Verification of T-beam and thick plate in Hechuan, Chongqing


    Key words