D5 Green is an innovative, pozzolanic multifunctional additive for concretes, mortars, dry building mixtures, grouts and cements. It significantly increases the strength of concrete, allowing a substantial reduction in cement content and carbon footprint.
Reduce cement and embodied carbon
Boost early strength
Make concrete waterproof
Accelerate setting time.
Reduce cement content and carbon footprint
Cement production is estimated to account for 8% of global carbon emissions.
Using Neocrete D5 Green at 2-3% can reduce cement content and lower the carbon footprint of concrete by 20%-25% (or up to 40% when used with supplementary cementitious materials), without impairing its performance.
When used with Supplementary Cementitious Materials (SCMs), cement content can be reduced by up to 50% without impairing early or ultimate strength of concrete.
Neocrete precast panels at Latteys with 40% cement reduction, Levin 2022
Neocrete D5 Green increases the strength of concrete by 25%-35% when added at 2-3% of cement mass.
D5 Green has been used in projects with stringent strength and durability requirements.
Neocrete low carbon floor slab for eHaus, Nelson 2020
Accelerate setting time
D5 Green accelerates the strength setting of concrete. Independent testing shows an increase in day 1 strength by 70% - 140% and significantly earlier achievement of target 28- day strength.
For this reason, D5 Green has been used in projects where developers needed to considerably decrease the
period of construction or remove formworks early.
Scotts College foundations and slab, Wellington 2021
Boost early strength
D5 Green boosts the early strength of concrete, making it attractive for precast concrete. Independent testing shows an increase in overnight strength by 70% - 140%. This means that even when used with fly ash, high overnight strength is achievable for concrete with D5 Green.
For this reason D5 Green has been successfully used in precast panels by Concretec in the Auckland City Rail Link project, where fly ash was specified.
Precast concrete panels for City Rail Link, Concretec, Pokeno 2021
As a cementitious powder or mixture, D5 may cause skin and eye irritation if not handled with care, may
be harmful if inhaled or swallowed.
As a precautionary measure, please use outdoors or in well-ventilated area, and wear personal protective equipment:
goggles, gloves and a respirator, ensure access to flowing water.
Recommended dosage is 2%-3% of cement content (efficiency increases with dosage).
D5 GREEN should be added into a concrete mixer in dry form together with sand or cement and should be thoroughly mixed for at least 30-60 seconds to ensure even distribution through the mixture. Note, that water content should be reduced by 15-20%, compared to concrete of the same target slump but with no admixtures. Trial mixes are recommended to establish the exact water content.
To achieve the best results with D5 GREEN, the normal good practices for concrete placement and curing should be observed.
Storage And Shelf Life
24 months in dry conditions in original factory packaging