Enhancement of Physico-Mechanical Properties of Facing Bricks by Hyperpressing of Local Raw Materials

Abstract

This study explores the basic principles of cement stone structure formation and examines the correlation between the properties of concrete mixtures with different fillers and those of materials produced by hyperpressing. An effective technology for the production of construction materials using local resources, including non-standard raw materials and industrial byproducts, has been developed. This development is significant in both environmental and economic terms. The experimental phase focused on the application of semi-dry pressing and hyperpressing techniques to improve the operational properties of concrete mixtures. During the pressing process, especially under hyperpressing conditions (pressure greater than 40 MPa), intense interparticle interactions are expected to form macrostructures that contribute to a more robust cement stone structure. The involvement of van der Waals forces and valence bonds between filler particles and hydrated clinker minerals, as well as molecular interactions, is considered to be the central mechanism promoting the increase in strength and stability of the material. An important aspect is the use of low plasticity clays and overburden rocks, as well as industrial waste, which allows a significant reduction in production costs and improves environmental sustainability. Hyperpressing technology has been shown to shorten production cycles, reduce energy consumption per unit of output, and improve economic efficiency. These attributes make the technology highly promising for the production of environmentally friendly building materials. This research facilitates the development of novel approaches for incorporating secondary and indigenous materials into construction. New ways to improve the efficiency and sustainability of building material manufacturing processes are presented.