Since when has a brick company come out of Silicon Valley? Calstar Products is making a brick using coal fly ash that needs 85 percent less energy to produce.

Primitive Technology: Wood Ash Cement & Fired Brick HutSubscribe: <a href="http://bit.ly/subPT">http://bit.ly/subPT</a> | Never miss a video! Enable ‘ALL ...

However, energy-smart bricks use 20 percent coal ash and 15 percent fine glass waste. This RCF waste is mixed with crushed clay particles and then oven-dried.

From its humble beginnings, producing just 7,000 bricks per month, Zerund's growth trajectory has been nothing short of phenomenal. Within just seven months of operation, the company generated an ...

Bricks made of discarded glass and recycling-waste ash have been shown to insulate better than regular bricks, while also requiring less energy to produce. And of course, they additionally use ...