Abstract
In the last years, several studies have been reported the valorization of waste materials in the production of alkali-activated systems. In most cases, a thermal curing condition is mandatory. This study aims to assess the mechanical and microstructural properties of alkali-activated systems, based on glass fiber waste, cured at room temperature. The compressive strength development and microstructural properties of alkali-activated systems were evaluated based on the SiO2/Na2O molar ratio (0.29-0.88) and curing time (up to 360 days).d. The results showed an effective compressive strength development at room temperature, achieving ~100 MPa after 360 curing days for specific mixtures. Moreover, a dense and compact microstructure was formed, and minor crystalline phases, such as Na-P1 and sodalite, could be detected in XRD patterns.
