Closing the loop on builders’ rubble through concrete innovation

Concor Infrastructure recycled 77,000 m3 of concrete waste during the expansion of the City Deep container terminal, exceeding a 24% landfill diversion target by recovering all waste. The project utilised High volume pulverized flue ash concrete (HVPFAC) and geopolymer concrete, resulting in R10.8 million in virgin material cost savings and R23 million in avoided landfill gate fees.

• Concor Infrastructure achieved a 100% recovery rate of concrete waste during the City Deep container terminal expansion, recycling 77,000 m3 of material to exceed the initial project brief of 24% landfill diversion.
• The project employed two specific concrete production technologies to enable reuse: High volume pulverized flue ash concrete (HVPFAC), which uses coal-powered plant fuel ash and mineral slag to lower emissions, and geopolymer concrete, a 'cement-less' alternative that can reduce greenhouse gas emissions by up to 90% compared to traditional concrete.
• The implementation of these innovative methods resulted in R10.8 million in savings on virgin material costs and the avoidance of R23 million in landfill gate fees.

APA

Barnes, K. (2018). Closing the loop on builders’ rubble through concrete innovation. GreenCape. https://greencape.co.za/wp-content/uploads/2022/10/CONCOR-CASE-STUDY-2-3.pdf

Chicago

Barnes, Kirsten. Closing the loop on builders’ rubble through concrete innovation. GreenCape, 2018. https://greencape.co.za/wp-content/uploads/2022/10/CONCOR-CASE-STUDY-2-3.pdf.

Wikipedia

{{cite report |last1=Barnes |first1=Kirsten |title=Closing the loop on builders’ rubble through concrete innovation |publisher=GreenCape |date=September 2018 |url=https://greencape.co.za/wp-content/uploads/2022/10/CONCOR-CASE-STUDY-2-3.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{barnes2018closing, author = {Barnes, Kirsten}, title = {{Closing the loop on builders’ rubble through concrete innovation}}, institution = {GreenCape}, year = {2018}, month = sep, url = {https://greencape.co.za/wp-content/uploads/2022/10/CONCOR-CASE-STUDY-2-3.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }