Maybe it's my misunderstanding but isn't concrete usually prepared local to the construction from ingredients like cement that are shipped in from remote locati

Maybe it's my misunderstanding but isn't concrete usually prepared local to the construction from ingredients like cement that are shipped in from remote locations? > To get around that problem, the duo first treated the biochar with waste water that was produced during concrete production. Is the waste water from biochar-cement based concrete suitable for use in creating subsequent batches of biochar-cement? How feasible is it to capture this waste water from producing the concrete and ship it back to the cement factory for producing cement?