Comparison of the red and yellow brick quality
In addition to apparent color, there are differences between red bricks and yellow ones. 1 – Yellow bricks are produce using clay, but the raw material for the red brick is Shale, which includes iron oxide, so it is not necessary to use coloring additives to the raw material, consequently there is stability of color In addition to apparent color, there are differences between red bricks and yellow ones. 1 – Yellow bricks are produce using clay, but the raw material for the red brick is Shale, which includes iron ...