Managing and controlling air pollution in Dhaka22 Sep 2024 21:04
Not everyone’s cup of tea but I’ve been chasing this fly ash idea for a while,it’s a fantastic useful by product from the coal fired plants and we were using these types of breeze blocks to build UK houses for decades…..the pollution from the traditional brick kilns is getting up everyone’s nose and the environmental brigade are catching up with the manufacturing and Yunus has just clamped down on it….
Alternative to bricks
FLY ash bricks are produced by blending fly ash (a byproduct of coal-fired power plants, produced in large quantity) with cement, sand, and water. These bricks are highly valued for their strength, durability, and thermal insulation. Environmentally, they offer significant benefits by repurposing fly ash that would otherwise contribute to landfill waste. Their cost-effectiveness is another advantage, as the abundant availability of fly ash minimises cement usage, reducing overall production costs while supporting sustainable construction practices. Fly ash bricks are lighter than clay bricks, have more compressive strength, and are made in a more environmentally friendly way on hydraulic machines. Bangladesh recently invested heavily in coal-fired powerplants. Few of them are already in operation (Barapukuria, Rampal, Matarbari, and Payra); coordination is needed with the Powerplant Authority for manufacturing of fly ash bricks. Relocating polluting red brick kilns from Dhaka to more environmentally friendly fly ash brick production facilities in remote areas will reduce the population’s exposure to PM2.5 by addressing a significant source of air pollution.
https://www.newagebd.net/post/opinion/245918/managing-and-controlling-air-pollution-in-dhaka
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