Evaluation of the Performance and Microstructure of Ecofriendly Construction Bricks Made with Fly Ash and Residual Rice Husk Ash

Figure 9

SEM micrographs of brick samples at various URHA replacement levels.

(a) 0% URHA

(b) 10% URHA

(c) 20% URHA

(d) 30% URHA

(e) 40% URHA