Solid brick made of clay may destroy vegetation and occupy infield,further more the strength and heat preservation capability of it is not as good as air brick.

• 由于粘土实心砖的生产要占用耕地并且破坏植被,另外在强度和保温等性能上也不如空心砖,所以采用煤矸石烧结空心砖替代粘土实心砖是发展的必然趋势。