The latest issue discusses the application of materials to enhance mechanical properties. The Editor's Pick primarily focuses on evaluating the fresh properties of industrial-based 3D printable geopolymer concrete. This is achieved by incorporating glass wool strings and glass fibers activated with sodium silicate solution. The glass fibers undergo a mechanical recycling process, wherein they are crushed to be utilized as an additive for concrete production. The crushing is necessary to achieve the desired particle size. Additionally, a magnetic field is employed to remove any metallic impurities present between the fibers. The study compares the fresh concrete properties, such as open time, setting time, and shape stability, of industrial-based geopolymer concrete (GPC) containing glass wool and glass fibers with those of industrial-based GPC without these additions. The aim is to assess the impact of adding glass wool strings and glass fibers on the overall performance of the geopolymer concrete.
