Alkali-activated binders/geopolymer and an application to environmental engineering

Abstract

For environmental reason, new binders that can be used as Portland cement replacement materials are being
needed. Recently, alkali-activated binders (AAB) and geopolymer have found increasing interest. As several
research reports have showed that the two new binders are likely to have high potential to be developed and
become an alternative to OPC. However, confusion in the classification of both binders is still there. This
paper reviews knowledge about AAB and geopolymer including historical background, reaction mechanisms
and reaction products. The similarities and differences of both binders are discussed. The application to
environmental engineering on hazardous waste management using stabilization/solidification is also
described.