Pore structure of geopolymer materials and its correlations to engineering properties: A review

The pore structure plays an important role in determining the performance of solid materials. This paper reviews studies about geopolymers, a rising kind eco-friendly low-calcium-content cementitious material. Geopolymers usually show four-leveled multiscale structure. abundance nano pores is key feature geopolymers comparing with that ordinary Portland cement. Factors, such as raw materials, alkali activators, additional materials and etc. could alter thus have effects on these A variety macro properties, compressive strength, thermal conductivity, permeability etc., close relationship geopolymers. General rules to optimize are figured out this review, which would help rational design application Further research trend also discussed.