California fabricator Watershed Materials is working with the National Science Foundation to develop a green binder for concrete blocks.
Getting the energy-intensive Portland cement out of masonry units has long been the goal of sustainable building-product manufacturers and researchers. So far, the most promising alternatives—among them fly ash and blast-furnace slag—are byproducts of other complex industrial processes. But that could soon change. New research from the National Science Foundation (NSF) with Napa, Calif.–based fabricator Watershed Materials shows promise for cement-alternative binders made of minerals derived from natural clay. In recent testing, their novel concrete material reported compressive strength of 7,000 psi—double that of typical concrete—while resisting water and chemical erosion.
Read the Full Story HERE >>> Source: Natural Minerals Could Replace Cement in Masonry Units | Architect Magazine