Dec 3, 2023 04:16 AM
https://www.sciencedirect.com/science/ar...1722002915
EXCERPT: Recently a paper published in Applied Clay Science argued that environmental and emissions problems can be minimised by switching to the ancient Roman concrete.
Calcined clay is made with a blend of clinker, calcined clay (a heat treated clay), limestone and gypsum.
“In addition to the environmental considerations, Roman concrete also represents the epitome of extremely durable cement-based materials,” the paper says. “Roman concrete exposed to harsh maritime environments remains in a remarkable condition even 2000 years after construction, while modern ordinary Portland cement concrete shows degradation within 32 weeks of exposure to seawater,” the authors write.
Dacre says anyone working in the engineering and construction industry who doesn’t know about calcined clay needs to educate themselves. The cement alternative has the potential to reduce emissions by roughly 40% compared to ordinary Portland cement.
“We’ve just got to prove it as quickly as possible; it’s going to take everyone in the engineering business to do that.” (MORE - missing details)
EXCERPT: Recently a paper published in Applied Clay Science argued that environmental and emissions problems can be minimised by switching to the ancient Roman concrete.
Calcined clay is made with a blend of clinker, calcined clay (a heat treated clay), limestone and gypsum.
“In addition to the environmental considerations, Roman concrete also represents the epitome of extremely durable cement-based materials,” the paper says. “Roman concrete exposed to harsh maritime environments remains in a remarkable condition even 2000 years after construction, while modern ordinary Portland cement concrete shows degradation within 32 weeks of exposure to seawater,” the authors write.
Dacre says anyone working in the engineering and construction industry who doesn’t know about calcined clay needs to educate themselves. The cement alternative has the potential to reduce emissions by roughly 40% compared to ordinary Portland cement.
“We’ve just got to prove it as quickly as possible; it’s going to take everyone in the engineering business to do that.” (MORE - missing details)