This instrument is based on the industry standards of the People's Republic of China JTG E20-2011《 In the test procedures for asphalt and asphalt mixtures for highway engineering T0709-2011《 The Marshall Stability Test of Asphalt Mixture is designed and manufactured as required by the Marshall Stability Test of Asphalt Mixture, which is suitable for the Marshall Stability Test of Asphalt Mixture, which can accurately determine the damage point of the asphalt mixture to conduct mix ratio design of asphalt mixture or asphalt pavement construction quality inspection.

1. Main technical characteristics

1、This instrument adopts advanced sensing technology and microcomputer processing technology. It is a Marshall stability test instrument with advanced technology and high degree of automation.

2、The control panel of this instrument is composed of a color LCD touch screen, and uses graphic LCD display technology to directly display the test data of stability value and flow value, curve graphics, test results, and test time. The Chinese character display test effect is intuitive and the instrument is easy to operate.

3、This instrument has functions such as parameter setting, measurement correction, automatic test control, automatic data acquisition, real-time clock, etc. The control device simultaneously collects test data and automatically judges the peak value of the test piece.

4、This instrument can store 100 sets of test data and test time, and can be called out to view at any time. The entire test is automatically completed and can be automatically returned to the position.

5、This instrument also has the function of manually controlling rise, fall and stop, which is convenient for users to use.

2. Main technical parameters and indicators

1、Maximum load: 50 kN。

2、Measurement range:                  ≤40kN。

3、Measurement error:                 ≤±0.1kN。

4、Overload protection function: Load value is greater than 39 kN Automatic protection when it is.

5、Vertical deformation (flow value): measurement range (0～20)mm。 Measurement error ≤±0.05mm。

6、Press rise speed:       (50±5)mm /min。

7、Communication interface:                  RS232 The serial communication port can communicate with the computer.

8、Operating voltage:                 AC（220±10%）V，50Hz。

9、Ambient temperature: 0 ℃～60℃。

10、Dimensions: 600 mm×380mm×900mm（ long ×Width ×high).

11、Motor power: 550 W。

12、Weight (net weight): 98 kg。

3. Optional accessories

1、HWY-1 Low temperature constant temperature water bath

2、SYD-0702 Marshall electric striker