[Retracted] The Application of Nano-Calcium Carbonate in the Technology of Improving Road Petroleum Asphalt

Figure 8

The influence of different temperatures on the penetration of the modified asphalt. (a) The influence of nano-calcium carbonates doping on the penetration of modified asphalt at 25°C. (b) The effect of nano-calcium carbonates doping on the penetration of modified asphalt at 15°C. (c) The effect of nano-calcium carbonates doping on the penetration of modified asphalt at 30°C.

(a)

(b)

(c)