The document summarizes research on geo-polymeric materials. Very little research data is available on these materials. Past research mostly used small binder and mortar samples. Some conclusions were contradictory. Tests on fly ash-based geo-polymer showed that curing temperature, time, and type of activator affected compressive strength, while the solution-fly ash ratio did not. Higher curing temperatures and activators with soluble silicates produced higher strength than those with hydroxides alone.