Bitumen content, three levels of chemical class quality (certified), asphalt

Shandong asphalt explained by colloidal structure, along with the dispersion medium saturate and aromatic content of the reduction in asphalt, to protect and increase the material dispersed colloidal asphaltene content, asphalt structure by sol gel structure into a solvent as well as the gel structure. Due to the different oil source and process bitumen obtained, although their respective chemical components can be very close, but the chemical structure of each component are not the same pitch spot, the different solubility parameters of the components. I.e., the compatibility of the components differ, resulting in a different gel structure of asphalt manufacturers, so they are not the same technological properties. Then asphalt in road engineering, in 1923, the asphalt is applied to seal the dam. In order to accelerate the construction progress and improved components, 1924 in California conducted the first road completed acceptance testing. In order to determine the quality of building materials, the next few years a lot of testing procedures to be developed. These programs are still valid until today used traffic engineering studies, design and construction among specific. 1936 Development invented Ring und Kugel-Versuch, one year after the invention of Brechpunkt nach Fraa & szlig, 1941 invented the Marshall test (Marshall-Test). Bitumen content, three-level chemical class quality (certified), bitumen supplied by Chemical Co., Ltd. Jinan three levels. Jinan three flat Chemical Co. (www.sanpinghuagong.com) Shandong Jinan, chemical products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the three levels of chemical leadership with the staff warmly welcome all inquiries negotiations to create three levels of chemical a better future.