A pervious concrete mixture contains little or no sand, creating a substantial void content.
A pervious concrete mixture contains little or no sand, creating a substantial void content.
I just participated in ASU's Sustainable Summit held in Washington DC, via the web, hosted by Aaron Brown.
I just attended the annual ARCSA Rain Water Harvesting Conference in Santa Monica, CA. I participated in a one day workshop, that I wish had been a two day workshop.