Billed as a very innovative technology by CHRYSO, EnviroMix® is engineered to boost the performance of Supplementary Cementitious Materials (SCM).
SCMs are industrial by-products used in concrete to decrease the amount of cement required for a mix, reducing the energy and CO2 impact of concrete. If not used in concrete these waste materials would be consigned to landfill.
CHRYSO Enviromix® allows significantly higher clinker replacement with SCMs while maintaining the desired plastic and hardened concrete properties.
Eddie Correia, executive vice president at CHRYSO Southern Africa, says EnviroMix® was developed specifically for use in green concrete.
“When constructing a building if the quantity of Portlandcement is reduced at an average across all concrete mixes (between 15% and 60%) by substituting it with SCMs, a company can earn points towards a Green Star Rated building,” he says.
Using SCMs in concrete has many advantages; they can improve permeability, increase the durability, reduce the potential for sulphate attack, reduce the heat of hydration and reduce the potential for alkali-silica reactivity.
However, Correia cautions that the curing of concrete is critical. As the percentage of SCM content increases in concrete, longer curing times may be needed.
EnviroMix® is suitable for use in multiple concrete applications including readymixconcrete, self-consolidating concrete, precast concrete and site batched concrete.
Correia says that on projects where the EnviroMix® technology has been deployed contractors have reported greater productivity and cost savings.
