ABSTRACT
This study investigates the synthesis of room temperature alkali activated (AA) bricks based on alkaline activation of construction and demolition waste coming from 2016 central Italy earthquake rubble. This waste consists in inert debris, which can be exploited as precursors or as fine and coarse aggregates in the production of AA bricks and cements. The material was ground and mixed to work with a representative portion. The forming process is uniaxial pressing. Typology, correct molarity of alkaline activators and curing conditions were also investigated. The consolidated bricks were subjected to integrity and water absorption tests to verify the effectiveness of the alkali activation. Apparent density tests were performed. Compressive strength and adhesion with concrete by means of three-point flexural tests were measured to choose the best samples. Furthermore, bottom ash from secondary raw material was added to CDW powders to evaluate the contribution of aluminosilicate source richer in amorphous phase.
