Ordinary Portland cement is the most common used cementitious material nowadays. To produce 1 ton of cement 0.65-0.92 tons of CO2 gasses are provided. This is a significant pollution which enhances greenhouse effect. To avoid further pollution and CO2 emission new cementitious materials are created. One of the most efficient is geopolymers. The development of geopolymers, new generation of cementitious materials, as an alternative to traditional cement and concretes, by the alkali activation of industrial waste, is a relatively new area and research topic for the scientific community. The alkali activation of materials is a chemical process that provides a rapid transformation of some specific phases (partially or totally amorphous) into compact cemented frameworks. Depending on the raw material selection and processing conditions, geopolymers can exhibit a wide variety of properties and characteristics, including high compressive strength, low shrinkage, fast or slow setting, acid resistance, fire resistance and low thermal conductivity. The aim of the research is development of geopolymers - new, knowledge-based, multi-functional materials, with high performance, reduced environmental impact and adjusted to customer needs. Materials used in preparation of geopolymers are industrial waste and by-products such as fly ashes obtained from burning grasses, flay ash and glass powder recycled from lamp demercurization facility in Liepaja. Raw materials were investigated and treated by using calcinations and grinding methods to increase their activity. Mechanical and physical properties of obtained geopolymers were tested.