Abstract: Provided are building and construction materials and a method of manufacturing the same. The method includes: creating a mixture by mixing clay ripened and aged in a supplier with ash and water; removing foreign materials such as stones from the mixture using a selector; removing air from the mixture using a vacuum pug mill; molding the mixture by injecting the mixture from which the air is completely removed into a prescribed mold and pressing the mixture with a press; drying a product molded in the molding step; and calcinating the dried product in a kiln. Thus, ash generated in a thermal power plant and buried is used as an alternative aggregate to a scantily available natural aggregate, thereby solving environmental problems due to the burying of waste.