The world population in urban areas has increased over the past years and the trends indicate that by the year 2025 will reach more than 4.3 billion.Parallel to the above, the amount of municipal solid wastes will also increase, from 1300 million tons as for today, to 2200 million tons in 2025.From such wastes, currently an average of 5% is glass, and less than 30% is recycled, which means that 46 million tons are landfilled;by 2025 the estimation is of 77 million tons of landfilled glass.Although glass is fully recyclable, various aspects complicate the recycling by the glass industry, one of them is sorting by color.Waste glass has been used in the partial substitution of portland cement and as an aggregate in concretes;nonetheless, the latent risk of alkali silica reaction is a major concern.The use of waste glass in alkali activated binders has great potential as waste glass is readily available in almost any urban area.However, there has been little research about it and one of the concerns is the possibility of producing hydraulic binders, as some of the reaction products can be soluble in water.Activation with alkaline compounds used for other alkali activated cements is viable and composite binders with other sources of calcium, such as carbonates or slags, have shown promising results in pastes and concretes.This paper will discuss the composition and structure of the reaction products in various binders bearing waste glass and will analyze the advantages of recycling glass as an alternative binder over the recycling in the glass industry.