Asphalt series: structure and principle of asphalt concrete universal testing machine

**Asphalt Concrete Universal Testing Machine - LSY-4** This testing machine is designed for the determination of axial compressive strength, corresponding strain, and axial compressive deformation modulus of asphalt concrete, in compliance with DL/T 5362-2006. It is suitable for both indoor molded samples and core samples taken from the field. The equipment is primarily used for mechanical property testing and analysis of asphalt concrete materials, including tensile and compressive tests. It can automatically measure parameters such as ReH, ReL, Rp0.2, Fm, Rt0.5, Rt0.6, Rt0.65, Rt0.7, Rm, and E. The system supports testing according to international standards like GB, ISO, DIN, ASTM, and JIS, providing accurate data for various applications. **Performance Features:** The machine features a high-strength light bar that forms a rigid gantry structure between the upper beam and work surface. It uses motor-driven transmission to move the beam up and down, enabling precise loading during testing. The system employs an advanced DSCC-1 digital closed-loop control system, allowing real-time display of test processes and curves, along with data processing and analysis through a graphical module. The product’s performance meets international advanced standards. **Technical Parameters:** | **Parameter** | **Specification** | |-----------------------------|-----------------------------------------------------------------------------------| | Device Name | Double Column Floor Type Electronic Universal Testing Machine | | Model | LSY-50 | | Maximum Test Force | 100 kN | | Accuracy Level | 0.5 level | | Test Force Measurement Range| 0.4% ~ 100% FS (Full Range) | | Test Force Indication Error | ±0.5% within indicated range | | Test Force Resolution | ±1/300000 of maximum force, consistent across the entire range | | Large Deformation Range | 10 ~ 800 mm (optional) | | Large Deformation Error | ±1% within indicated range | | Displacement Indication Error| ±0.2% within indicated range | | Displacement Resolution | 0.015 μm | | Force Control Rate Range | 0.005 ~ 5% FS/s | | Force Control Accuracy | ±2% when rate < 0.05% FS/s; ±0.5% when rate ≥ 0.05% FS/s | | Deformation Rate Range | 0.005 ~ 5% FS/s | | Deformation Rate Accuracy | ±2% when rate < 0.05% FS/s; ±0.5% when rate ≥ 0.05% FS/s | | Test Bench Speed Range | 2 ~ 250 mm/min | | Test Bench Speed Accuracy | ±0.2% within set value | | Constant Control Range | 0.5% ~ 100% FS | | Temperature Range | Room temperature to 100°C | | Dimensions | 850 × 550 × 1680 mm | | Effective Stretching Space | 700 mm (including stretching fixture) | | Effective Compression Space | 850 mm (with compression fixture) | | Beam Moving Distance | 1100 mm | | Effective Test Width | 450/550 mm | | Power Supply | 220V / 50Hz, ±10% | | Power | 0.75 kW | | Host Weight | 520 kg | The machine is equipped with microcomputer control and includes a printer for outputting test results. It is ideal for laboratories and research centers involved in material testing and quality assurance. 

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