Theoretical Prototyping System for Sustainable Bricks Incorporating Stone Waste

The natural stone industry plays a strategic role in the global economy: in 2015 production reached 82.6 million tons. Italy leads European market, accounting for over 30% of the total volume. However, more than 70% of gross production becomes waste during extraction and processing, generating significant environmental impacts. As this waste is non-hazardous, its recovery represents an opportunity for the development of sustainable applications. This contribution aims to develop a theoretical system for the definition of a sustainable brick, based on an innovative cementitious mixture incorporating marmettola, a waste deriving from the processing of marble stone. The study involves the definition of an optimal mix-design, as well as its production process, ensuring adequate mechanical performance and durability. The approach also explores the development of different geometric configurations of the brick, designed to compose modular walls. Laying techniques will include joints made from the same waste, fostering construction circularity. The proposed prototyping system enables the investigation of high-performing solutions, both environmentally and structurally, in line with sustainable construction principles. The research contributes to the debate on advanced building technologies and promotes a more responsible resource use, supporting the transition towards sustainable and circular building models.