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Frequently asked questions
What is low-carbon concrete?
Low-carbon concrete is designed to reduce carbon emissions by incorporating various methods, including the use of supplementary cementitious materials (SCMs), lower-carbon cement made in New Zealand, sustainable aggregate sourcing, and other initiatives.
Why is Ecrete™ important for sustainability?
Ecrete™ is our low-carbon concrete solution designed to significantly reduce the carbon footprint of construction projects, contributing to more sustainable building practices.
Can low-carbon concrete be used for all types of construction?
Yes, it can. We first assess the structural application and program performance before optimising the carbon footprint of your project. Allied Concrete provides expert guidance to ensure the best fit for each project.
Does low-carbon concrete contribute to green building certifications?
Yes, using low-carbon concrete can help projects achieve Green Star, Homestar, and LEED certification points due to reduced embodied carbon.
Does low-carbon concrete take longer to cure?
Yes and no. The curing time depends on several factors, with raw material availability being a key one.
In the South Island, achieving lower-carbon outcomes often requires cement substitutions. Depending on the time of year, these substitutions may slightly impact the initial setting time. In the North Island, this is less likely due to the availability of low-carbon cements.
Our Plant Engineers can optimise curing times based on your specific construction circumstances.
How can I ensure my project maximises sustainability benefits?
Consider the construction sequence, the overall project timeline, and where program requirements or specific finish types are necessary.
For example, foundations and substructures can typically have lower carbon footprints for their respective grade, whereas elements requiring a quick formwork turnaround e.g., precast elements, are more sensitive to carbon optimisation.