Scientists at Green World Crete, LLC, Pompano Beach, Fla., bill Geo-Green Crete as a low-carbon emission cementitious product poised to provide global
Scientists at Green World Crete, LLC, Pompano Beach, Fla., bill Geo-Green Crete as a low-carbon emission cementitious product poised to provide global construction interests a high-performance, cost-effective, and environmentally friendly alternative to portland cement. The binding agent is formulated from naturally occurring aluminosilicate-bearing materials and abundantly available, but unspecified, post-industrial waste.
Over the millennia, concrete prepared by the ancient Egyptians and Romans Û using lime, pozzolans and aggregates Û is still in existence, giving proof of its durability, says Green World Crete Director of Communications Dr. Elaine Duval. The Roman cement and the small artifacts they produced were made using knowledge of geopolymer techniques. The Geo-Green Crete product is very similar to these ancient cementitious materials.
Green World Crete scientists focused on a nonlimestone-based cement that does not require the use of fossil fuel to heat large kilns. Their process combines raw materials with a binding agent at ambient temperature; near-zero carbon-dioxide emissions qualifies Geo-Green for international carbon credits. Tested by independent laboratories in the U.S. and other countries, the product reportedly meets ASTM standards for compressive strengths suited to nonstructural and structural concrete.