摘要: |
Since the beginning of the 1970s, hopes have been that hydrated lime, beside being a useful antistripping agent, also might work as an inhibitor of bitumen hardening. These expectations appeared to be supported by the results of several laboratory investigations. In studies presented in this thesis, laboratory ageing of bitumen was performed using standardized methods generally accepted to resemble real life conditions during production and service. The results show that under such conditions, the anti-ageing capacity of hydrated lime is fairly modest. However, it was also shown that using more severe ageing conditions hydrated lime can produce a striking reduction in the ageing index. |