Hardened Concrete Air Void Analyzer — Model 457

Product Application:

Used for studying the influence of concrete air-entraining agents on the characteristic parameters of concrete bubbles, the relationship between bubble characteristic parameters and material mix ratios, and the correlation between bubble spacing coefficient and frost resistance durability indicators.

Execution Standards:

1, "Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete" ASTM C457M-16;

2, "Test for Determination of Air Void Characteristics in Hardened Concrete" BS-EN-480-11-200;

3, "Test Methods of Cement and Concrete for Highway Engineering" JTG 3420-2020;

4, "Code for Durability Design of Railway Concrete Structures" TB10005-2010;

5, "Test Code for Hydraulic Concrete" SL 352-2020.

Technical Parameters:

1, ※Four testing methods: Straight-line method, Area method, Point-count method, Custom method, truly achieving multi-purpose use with one machine;

2, Microscope resolution: <2μm;

3, Microscope magnification: 100 to 200 times (adjustable according to user research requirements);

4, Optical system: Original imported 3.0 imaging system, 5 million pixels;

5, ※X and Y axes use magnetic levitation platform with imported grating ruler, movement accuracy <2μm, repeat positioning accuracy 1μm;

6, Chord length test range: ≥1μm, Area test range: ≥5μm²;

7, ※X and Y moving platforms are directly driven by motors, without screw transmission, ensuring platform parallelism <2μm during operation;

8, Testing time: 5 minutes, varies with test conditions;

9, Specimen size: Maximum 150*150mm, compatible with circular specimens;

10, ※After testing, the generated report automatically completes and inserts the puzzle image on the first page without manual intervention;

11, ※X and Y bidirectional displacement platforms, net movement dimensions both greater than 180mm;

12, Measurement data deviation: Air content ≤0.03%, Spacing coefficient ≤0.001;

13, Measurement results display: Air content, Average bubble chord length, Number of bubbles, Average bubble radius, Average bubble specific surface area, and Bubble spacing coefficient, data generated in Excel files as lists and curve graphs;

14, Supports custom paths, allowing manual avoidance of specimen defects to improve test result reliability;

15, Automated measurement system for operation and analysis, users only need to place the sample on the test platform, the remaining work is automatically completed by the system and a report is generated;

16, ※Built-in multiple algorithms, Area method testing supports user-defined ignore area and repair area sizes, enhancing test accuracy;

17, Collection and control lines use DB interface mode, more stable, reliable, and convenient for plugging and unplugging;

18, Product can be upgraded to test irregular sample specimens, facilitating on-site testing;

19, Comes with a precision grinding and polishing machine and various models of diamond grinding and polishing discs.