This paper presents a comprehensive study in which non-destructive testing utilizing ultrasonic pulse velocity (UPV). considering both pressure (P) waves and shear (S) waves. was used to assess the compressive strength (CS) of rubberized bricks. These innovative bricks were manufactured by blending lime kiln dust (LKD) waste with ground granulated blast furnace slag (GGBFS). https://fitnessgravesyardes.shop/product-category/pca-display/