Research For the Production of Environmentally Friendly Material from Industrial Waste Stone Powder by Geopolymer Technology ☆

Geopolymer technology was applied for environment friendly material fabrication with 20 – 23 wt% waste stone powder from artificial stone production process and 0.5 wt% of Na2SiO3 liquid glass (39 wt%). The material met the technical requirements according to TCVN 6477:2016 standard for unburnt material. The time of co-hydrolysis reaction help to create the Si-O-Si interspersed with bonds was not affected by the curing process of PCB40 with the presence of liquid glass (Na2SiO3.nH2O). We are creating a geopolymer network and helping the material reduce brittleness and increase ductility and compressive strength of conventional cement. The peak region at 959 cm-1 of FT-IR analysis and the surface structure morphology of SEM images showed that the Si-O-Al/Si-O-Si bond was formed by the reaction of Na2SiO3 with cement. The surface of the geopolymer material is denser and more tightly bound than the sample without Na2SiO3. The manufacture of unburnt materials from waste stone powder from the artificial stone production process by TCVN 6477:2016 can open a new treatment direction for this type of waste, reducing the harmful effects of landfill on the environment.