CO2 Abatement in Eco-Cement Blocks
{"Image DocumentName": "CO2 Abatement in Eco-Cement Blocks", "Image ImageDescription": "John Harrison Presentation AASMIC Conference. CO2 Abatement in Eco-Cement Blocks. For 85 wt% Aggregates. 15 wt% Cement. Portland Cements 15 mass% Portland cement, 85 mass% aggregate. Emissions .32 tonnes to the tonne. After carbonation. Approximately .299 tonne to the tonne. No Capture 11.25% mass% reactive magnesia, 3.75 mass% Portland cement, 85 mass% aggregate. Emissions .37 tonnes to the tonne. After carbonation. approximately .241 tonne to the tonne. Capture CO % mass% reactive magnesia, 3.75 mass% Portland cement, 85 mass% aggregate. Emissions .25 tonnes to the tonne. After carbonation. approximately .140 tonne to the tonne. Capture CO2. Fly and Bottom Ash 11.25% mass% reactive magnesia, 3.75 mass% Portland cement, 85 mass% aggregate. Emissions .126 tonnes to the tonne. After carbonation. Approximately .113 tonne to the tonne. Eco-cements in porous products absorb carbon dioxide from the atmosphere. Brucite carbonates forming lansfordite, nesquehonite and an amorphous phase, completing the thermodynamic cycle. Greater Sustainability. CO2 ABATEMENT IN AN ECO-CEMENT BLOCK. The above slide shows that for an eco-cement concrete in a block which is 15% eco-cement if the eco-cement contains 75% reactive magnesia and with capture of CO2 during the manufacturing process and the use of a pozzolan after carbonation net emissions are less than a third as much > .241 >.140 >.113 Bricks, blocks, pavers, mortars and pavement made using eco-cement, fly and bottom ash (with capture of CO2 during manufacture of reactive magnesia) have 2.65 times less emissions than if they were made with Portland cement.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}