环氧涂层钢绞线拉索在斜拉桥中的应用

桥梁建设对索体防腐性能及强度要求不断提高 ,环氧涂层钢绞线因符合上述要求而被广泛应用 ,通过介绍宜宾中坝桥采用前支点挂篮及钢绞线斜拉索的施工过程 ,详述环氧涂层钢绞线拉索在斜拉桥中的具体应用。     

Rheological properties of conductive asphalt binders containing graphite and carbon fiber before and after ageing

Modified asphalt binders were prepared by adding conductive materials, graphite and carbon fiber. The rotation thin film oven test (RTFOT) and pressure age vessel test (PAV) were conducted to simulate the binder aging in the field. Rheological properties of graphite and carbon fiber modified asphalt binder were investigated by the empirically rheological properties (penetration and softening point) and the dynamic shear rheometer (DSR) test. Results show that physical properties of asphalt binder change with conductive material mixed. DSR tests present that the values of complex modulus increase while phase angles decrease under a proper amount of graphite and carbon fiber. Rutting parameters point out that graphite can improve the rutting resistance of asphalts. Rheological parameters can be used to assess aging.     

催化剂使用的前、中期苯酐生产流程的改造

通过对苯酐装置热处理系统的改造．在催化剂使用的前期、中期大大降低生产成本。