Electrical resistivity of fly ash and metakaolin based geopolymers

In this paper, the electrical resistivity behavior of fly ash and metakaolin based geopolymer was investigated with the two-probe measurement method. The effects of alkali activator concentration, curing temperature and slag substitution rate on the electrical resistivity and pore size distribution were discussed. It was found that the electrical resistivity for fly ash based geopolymer is much higher than that for metakaolin based geopolymers. With the increase of alkali concentration, the electrical resistivity for both fly ash and metakaolin based geopolymers decreased significantly. The curing temperature has a significant influence on the electrical resistivity for fly ash based geopolymers, while the influence of curing temperature for metakaolin based geopolymer is negligible with a prolonged curing period. The increase of slag replacement ratio would increase the electrical resistivity for fly ash based geopolymer.

Publication year:2020

BOF-keylabel:yes

IOF-keylabel:yes

BOF-publication weight:3

CSS-citation score:3

Authors:International

Authors from:Higher Education

Accessibility:Closed