Study on the early performance of silica fume-slag inorganic polymer

Abstract

Based on the slag inorganic polymer, the silica fume-slag inorganic polymer (SSIP) with the ordinary and semi-dense silica fume slag content of 5%, 10%, 15%, 20%, 25 and 30%, respectively, were prepared, the working performances, early mechanical properties and the phase of SSIP were studied. The results show that: two kinds of silica fume both can prolong the initial and final setting time of SSIP to a certain extent and improve the working performance, but on the whole, the addition of silica fumes will weaken the compressive and flexural strength, thus reduce the early mechanical properties; The XRD spectrum of SSIP has no obvious change after adding silica fumes, the phase composition of two kinds of SSIP was similar, and the larger the silica fume content is, the higher the amorphous content of SSIP is.