1. Test the accumulation degrees, tightness and void fraction of the sand when it’s piled up naturally;

2. Test volume density of coarse aggregate (sand) , including natural accumulation state, pounding the condition the clearance rate of packing density and accumulation condition.

Xi’an Zealchon Electronic Technology Co.,Ltd adhering to the "professional,  honest, and providing the best service" business philosophy, with the guidance of professors and researchers from the Well-known institutions in China,      developed a series of leading domestic and international standards, Technology class detecting instrument for asphalt and asphalt mixture, Road, bridge deck, geotechnical, structural, etc and OEM designed 12 series more than 100 kinds of laser productswith high power and long service time.