Concrete block bricks companies are marketing that their products are eco-friendly, as they are not emitting carbon dioxide and not using soil. At that viewpoint, they are right.
But,in their manufacturing process, they are largely using cement and sand. Cement manufacturers also badly polluting environment by particulate matters and others emissions activities. Overconsumption of natural resources as well as sand extraction can cause environmental damage.
My question is, how much eco-friendly concrete block bricks is?
I think concrete bricks are not from 100% eco-friendly materials but still, they are reducing the carbon dioxide emission fractionally by not using soil and not burning them like a traditional brick.
Ecofriendly concrete bricks could be produced globally by using less of cement but more of pozzollanic ashes from industrial and agro activities. But most brick makers will first consider acceptance from consumers alongside the financial implications. Standards and other logistical challenges are other factors affecting it's global acceptance and adoption.
Do not neglect the fact that many manufacturers of cement source their limestone from open pit mining (at least in the United States). The conversion of crushed limestone into cement is very energy intensive. Approximately 8% of global CO2 emissions are from cement manufacture. The extraction and transportation of natural gas used in gas-fired cement kilns also contribute to fugitive emissions of methane. Is concrete block "eco-friendly"?
if concrete blocks consist of partial replacement of fly ash or slag material then its a eco friendly. it will reduce 40 to 50 % of cement content in the blocks.
I think concrete bricks are not eco-friendly materials in comparison to fly ash bricks. On the other hand, the incorporation of activated clays and bio ashes is as an excellent clinker replacement that we could use it to produce new building product.
Initially, you must specify the block.
Structural? Therefore, compliance with technical standards is essential.
For masonry of sealing blocks, it is possible to seek sustainability constraints.
For example, attached paper that can help..
concrete bricks are not eco-friendly but earth bricks stabilized with lime or cement are low cost materials and present lower carbon dioxide emissions
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