Residual mechanical properties of steel fibre reinforced geopolymer concrete (SFRGC) after exposure to elevated temperatures

This study presents the effects of two types of alkali activators (Na and K-based) on the residual mechanical properties of steel fibre reinforced geopolymer concretes (SFRGC) after exposed to various elevated temperatures and compared with those of steel fibre reinforced concrete (SFRC). Results show that the SFRGC containing Na- based activators exhibited much higher residual compressive and indirect tensile strength at all elevated temperatures including at ambient condition than its K-based counterpart and SFRC

Durability Properties of High Volume Slag and Slag-Fly Ash Blended Concrete Containing Nano materials

This research investigated the effect of the addition of a small amount of nano silica and nano calcium carbonate on the compressive strengths and durability properties of high volume slag (HVS) and high volume slag-fly ash (HVS-FA) blended concretes. The results showed that low-carbon concretes containing 70% blast furnace slag or 70% slag-fly blended materials with superior strengths and durability can be achievable by adding only 1% nano calcium carbonate and 2-3% nano silica