As society moves towards decarbonisation, it is important to assess the hydromechanical behaviour of binders that could offer a low-carbon alternative Portland cement in ground improvement technologies. This work considers two such alternatives: one still largely unexplored (metakaolin-based geopolymers) and better known (colloidal silica). Results from unconfined compressive strength, permeabi...

Abstract. Geopolymers are inorganic and versatile alternative binder. They exist in a wide range, varying from material which behaves like mortars to with properties ceramics. This makes them potentially innovative repair mortars. In this research the activation of metakaolin-based geopolymers is explored context stone conservation. A set reactivity tests performed evaluate activators compatibi...

One of the major durability concerns for limestone calcined clay cement (LC3) concrete is its high susceptibility to atmospheric carbonation that could lead an early onset electrochemical corrosion reinforcing steel in structures. Aimed at designing innovative LC3 formulations with potentially enhanced resistance, this preliminary study investigates influence reactive magnesia (MgO) on early-ag...

Abstract Decarbonization of the cement and concrete industries is one top priorities on path to a carbon-neutral economy. This article presents novel model for evaluating emissions from production metakaolin (MK) as supplementary cementitious material used in ternary blended cements (e.g., 35% metakaolin, 15% limestone, 50% portland cement) an accompanying decisions-support tool (MKC-Tool). App...

In order to increase the durability of concrete in maritime environments, it is often recommended use supplementary cementing materials such as silica fume or blast furnace slag. Metakaolin, even low purity, also allows a significant improvement chloride diffusion. The aim this work was evaluate characteristics concretes based on flash metakaolin when exposed marine environment. Concretes CEM I...