This instrument is in accordance with 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 T 0755-2011《 Designed and manufactured as required by the slurry mix load wheel sand bonding test, it is suitable for controlling the upper limit of the asphalt usage in the slurry mix, and together with the wet wheel wear test, the optimal asphalt content of the slurry mix is ​​determined.

1. Main technical characteristics
1、This instrument is a floor-standing structure, and its structural design and specifications of the test instruments are in line with the T 0755 The standard requirements are novel design, reasonable structure and easy to use.
2、The mechanical transmission part is designed with safety protection devices to prevent accidental injury of the operator and is safe and reliable.
3、During the test, the rolling frequency is set by the operator in advance, and the instrument is automatically counted when it is working until the counting value is equal to the set value, and the instrument stops working.

2. Main technical parameters and indicators
1、Crushing frequency: 44 times /point；
2、Crank Radius: 152 mm±2mm；
3、Rubber wheel size: 76.5 diameter mm±1mm， Width 26.0 mm±1.0mm；
4、Rubber wheel hardness:         HRC60～HRC70 between；
5、Rubber wheel loading weight: The total weight of the car is 56.7 ㎏±0.5㎏；
6、Test model: There are 6.4 mm、12.7mm Two types of thick, choose as needed, internal size 50 mm×380mm；
7、Sand frame: The interior dimension is 355.0 long mm×Width 38.0 mm×Thickness 0.5 mm ；
8、Steel cover plate: Dimension 353 long mm×36 wide mm×High 3 mm；
9、Dimensions: 1400 ㎜×260㎜×450㎜（long ×Width ×high)；
10、Working power supply:         AC Three-phase 380 V/50Hz， Motor power 550 W。

3. Optional accessories
1、Platform scale:
2、Balance:
3、Oven: Weighing is 100 kg， The sensory amount is not greater than 0.5 kg；
Weighing is 2000 g， The sense amount is not greater than 1 g；
With forced ventilation, the temperature can be controlled at 60 ℃±3℃。