1. Introduction

The Marshall stability tester is suitable for Marshall stability testing and immersion Marshall stability testing, used for mix design of asphalt mixtures or quality inspection of asphalt pavement construction. This instrument is suitable for standard Marshall specimen cylinders (101.6mm × 63.5mm) and large Marshall specimen cylinders (152.4mm × 95.3mm).

2.Instrument composition

The Marshall stability tester includes a main unit, a force measuring device, a flow value measuring device, a printing device, and related accessories, used for measuring stability and flow values in Marshall tests. At the same time, the main unit of this experimental instrument only needs to be modified slightly and equipped with relevant accessories to complete various tests that require the application of vertical loads.

3.Characteristic

1. It can achieve functions such as automatic loading, automatic shutdown, data display, data acquisition, peak discrimination, peak retention, and data printing.

2. The circuit adopts strong and weak current separation, digital and analog separation, and electronic components are all made of military products. The working temperature range is wide, the working performance is stable, the repeatability is good, and the anti-interference ability is strong.

3. Adopting a triple self-protection function of hardware and software to ensure the safety and reliability of the testing process. The whole machine is beautiful and lightweight.

4. The modular design concept is applied, and each functional module is relatively independent, making it easy to repair and maintain.

4. Technical Specifications

1. The vertical upward speed of the experimental instrument tray is 50 ± 5mm/min

2. The maximum movement distance of the testing instrument tray is 70mm

3. Power working range: 0-50.00kN

4. Flow value working range: 0-20.00mm

5. Measurement accuracy of force measuring device ± 0.01kN

6. Flow measurement device with an accuracy of 0.01mm

7. Working voltage: AC 220V

8. Motor specifications: 220V, 0.37KW, 1440rpm, single-phase operation

9. Maximum rated load: 50KN

10. Usage conditions: Environmental temperature 0 ℃ -60 ℃ Relative temperature<85%