“十五”规划期间，我国要用三年过渡时间，在１７０个大中城市，完全禁止使用粘土实心砖；积极引导其它地区用新型墙体材料，替代粘土实心砖。重点发展非粘土类空心制品、混凝土砌块、各种轻质板材和复合板，大力推广使用以粉煤灰、煤矸石等工业废渣为原料的新型墙体材料生产 During the “Tenth Five-Year Plan” period, China will use a three-year transitional period, and it will completely prohibit the use of clay solid bricks in 170 large and medium-sized cities; it will actively guide other regions to use new wall materials instead of clay solid bricks. Focus on the development of non-clay hollow products, concrete blocks, various lightweight panels and composite panels, and vigorously promote the production of new wall materials using industrial waste such as fly ash and coal gangue as raw materials.