New trends in concreting with alternative binders instead of cement.
Well the first question to ask is if you really need concrete for that specific application. An alternative to OPC is the Limestone Calcined Clay Cement. I think they are going now into large scale production in some countries.
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https://www.researchgate.net/project/LC3-Limestone-Calcined-Clay-Cement
Article Eco-efficiency analysis of low-carbon cement production by r...
Hi,
As of now in India, alternative materials for OPC in concrete, are fly ash and rice husk ash. These materials are rich in SAF and fly ash is readily available in market too.
Calcium aluminate, calcium sulfoaluminate cements, and alkali activated materials
Nowa days PPC cement, recycled aggregates, Aggregates other than natural aggregates like Blast furnace slag etc. used for production of concrete.
Geopolymer concrete as well as concrete with specific requirement are most common over OPC
Geopolymer concrete with alcofines can replace OPC even for general construction. It is difficult to gain required strength without alcofines at normal temperature.
I agree with Mr. Edwin Zea Escamilla. In the case of utilization fly ash, silica fume and other agro-based industrial ashes, 100% replacement of OPC may not be achievable unless they are enhanced with certain physico-chemical modification.
Natural pozzolanas found in previous volcanic areas could substitute or replace OPC in concrete. Recent studies on pozzolanic activity index of scoria and pumice suggest that some volcanic rocks when properly ground and activated could be used as pozzolanas (See: Article Measurement of Pozzolanic Activity Index of Scoria, Pumice, ...
PPC is the immediate alternative since other pozzolanic alternatives might take more time for mass scale production and market acceptability
M. Achyutha Kumar Reddy … Please check references below.. hope it will be helpful for you…
Regards…
https://www.youtube.com/watch?v=xswgsVJNCGQ
https://nationalcementsc.com/products.php?what=opc
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