Improving the Performance of Mortars Made from Recycled Aggregates by the Addition of Zeolitised Cineritic Tuff

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 in more resistant mortars, by mixing it with zeolitised cinerite tuff (ZCT) at varying normalised proportions. To attain objectives this research, a series tests were done: First, chemical, physical mineralogical characterisation CDW ZCT through XRF, XRD, SEM granulometric methods. Second, technological test was made determine mechanical strength 7, 28 90 days specimens Portland cement (PC) mixtures PC/CDW, PC/ZCT, PC/CDW-ZCT. The results obtained methods showed that sample consisted main phase portlandite tobermorite, secondary consisting quartz, ettringite calcite; whereas has mordenite smectite (montmorillonite), amorphous devitrified volcanic glass, quartz plagioclase. Mechanical established PC/CDW have discreet compressive values up 44 MPa days, PC/ZCT achieved remarkably high 68.5 MPa. However, most interesting conclusion research good result PC/CDW-ZCT, which increased from 52.5 62 curing; fact establishes positive influence on mortar mixtures, permits authors objective been fulfilled. Finally, argued could contribute effective use metropolitan areas.