Nanoparticles-modified polymer-based solar-reflective coating as a cooling overlay for asphalt pavement

Figures & data

Figure 1. SEM morphology of (a) nano-TiO₂ and (b) nano-TiNO_2.

Figure 2. SEM morphology of fracture surfaces of (a) nano-TiO₂/acrylic and (b) nano-TiNO₂/acrylic.

Figure 3. Spectral reflectance of asphalt.

Figure 4. Spectral reflectance of acrylic resin and epoxy resin.

Figure 5. Spectral reflectance of epoxy resin matrix with different weight fractions of (a) TiO₂ and (b) TiNO₂.

Figure 6. Reflectance of epoxy resin matrix with weight fraction of TiO₂ and TiNO₂ (a) 0.1%, (b) 0.3%, (c) 0.5%, (d) 0.7%, and (e) 0.9%.

Figure 7. Spectral reflectance of acrylic resin matrix with variations of TiO₂.

Figure 8. Reflectance of different matrices with weight fraction of 0.7% TiO₂.

Figure 9. Temperature variations with different matrix and fillers.

Table 1. Average values of BPN and SN for tested samples

Samples	BPN	MTD/mm
Conventional asphalt concrete	61	0.672
Asphalt concrete coated with epoxy resin	63	1.184
Asphalt concrete coated with acrylic resin	69	1.000
Abbreviations: BPN, British Pendulum Number; MTD, macro-texture depth