New Green Cement

摘要

Drexel University engineers in Philadelphia have developed a "green" cement that reduces energy consumption and CO_2 emissions by 97% and offers cost savings of up to 50% compared to Portland cement. A form of alkali-activated cement that utilizes slag (or fly ash), limestone and water, it requires no heat to produce and is undergoing ASTM C1157 testing. Equally intriguing is the potential-through design of experiment (DOE)-to customize mixtures according to suppliers and applications. Start-up company Greenstone Technologies, Inc. is seeking a partner to bring the product to market.