Metropolitan construction and demolition waste (CDW) is currently an important source of recycled materials that, despite having completed their useful life cycle, can be reincorporated into the circular economy process (CEP); however, recycling very selective, material not always fully satisfactory due to intrinsic nature waste. This work aims demonstrate establish how increase effectiveness i...

This paper shows the results of a study focused on evolution and properties mortars made with mixture portland cement (PC) natural mordenite (Mor). To begin, samples mordenite, sand were studied X-ray diffraction (XRD), fluorescence (XRF) granulometric analysis (GA). Next, ratio 75% PC 25% prepared to determine their initial final setting times, consistency density. Continuing, density, weight ...

Global food security concerns have spurred increasing demand for locally sourced and produced K-fertilizers. Various processes been explored more than a century; one promising solution is based on the alkaline aqueous alteration of feldspar-rich rocks at elevated temperatures. However, knowledge overall physico-chemical reactions comprising dissolution feldspar precipitation secondary phases st...

Abstract Deep geological disposal is the preferred solution for long-term storage of radioactive waste in many countries. In a deep repository, cementitious materials are widely used structure and buffer/backfill repository stabilisation hazardous materials. The cement acts as physical barrier also contributes chemically to containment by buffering groundwater high pH, limiting solubility radio...

Potassium feldspars (KAlSi3O8) are ubiquitous minerals in the Earth's upper crust. This family of has been subject numerous experimental and theoretical investigations concerning their dissolution kinetics mechanisms controlling chemical alteration at acid neutral pH, temperatures ranging from ambient to hydrothermal conditions. On other hand, considerably less research on behavior K-feldspars ...

This paper shows different approaches to save mineral resources or energy for the production of autoclaved aerated concrete (AAC) using secondary materials. The goal is implement new recycling routes in building industry and establish material loops. It could be shown, that AAC can act as a sink fine fractions from rubble consisting waste calcium silicate masonry units (CSU) by replacing primar...