本文選題：瀝青 + 納米二氧化硅�。� 參考：《建筑材料學(xué)報》2014年01期

【摘要】：研究了表面修飾納米Si0_2對瀝青物理性能和紫外老化性能的影響,并通過高溫儲存穩(wěn)定性試驗探討了納米SiO_2與瀝青的相容性.結(jié)果表明:納米SiO_2的表面修飾顯著增強了其與瀝青的相容性,相同摻量下,表面修飾納米SiO_2改性瀝青的軟化點差值以及離析管上下兩部分納米SiO_2含量的差值均要低于未修飾納米SiO_2改性瀝青.與未修飾納米SiO_2相比,表面修飾納米SiO_2對瀝青的軟化點和黏度提高幅度更大,針入度降低更小,且可提高瀝青10℃的延度.同時,表面修飾納米SiO_2改性瀝青紫外老化后的黏度老化指數(shù)顯著減小,表現(xiàn)出優(yōu)良的耐紫外老化性能.
[Abstract]:The effects of surface modified nano Si0_2 on physical properties and UV aging properties of asphalt were studied. The compatibility of nano SiO_2 and asphalt was investigated by high temperature storage stability test. The results showed that the surface modification of nanometer SiO_2 significantly enhanced its compatibility with asphalt. The difference of softening point and the content of nanometer SiO_2 in the upper and lower parts of the segregation tube are lower than that of the unmodified SiO_2 modified asphalt. Compared with unmodified nano SiO_2, the softening point and viscosity of asphalt modified by surface modified nano SiO_2 were increased more greatly, the penetration of asphalt was decreased less, and the ductility of asphalt was increased at 10 鈩，

本文編號：1948480