They sort of did: it varies. They want to use different combinations of industrial waste and local resources, per area. That’s a great idea to research and the catalog they’re developing will be very useful info but I can’t see the industry getting behind “it varies”
That’s just way too vague to tell one way or another, and I don’t want to fall for marketing. Most concrete is made of mostly local materials, since the sand and gravel is quarried locally, sometimes on the same site as the mixing plant
They sort of did: it varies. They want to use different combinations of industrial waste and local resources, per area. That’s a great idea to research and the catalog they’re developing will be very useful info but I can’t see the industry getting behind “it varies”
That’s just way too vague to tell one way or another, and I don’t want to fall for marketing. Most concrete is made of mostly local materials, since the sand and gravel is quarried locally, sometimes on the same site as the mixing plant