Research Article

Experimental Study on Nano-SiO2 Improving Concrete Durability of Bridge Deck Pavement in Cold Regions

Figure 11

Comparison of distribution of elements in microscopic regions of concrete without and with nano-SiO2: (a) distribution of elements in the microscopic region of concrete without nano-SiO2; (b) distribution of elements in the microscopic region of concrete with nano-SiO2.
(a)
(b)