Table 2
Embodied Energy for Cement and Concrete Production
Notes:
Calculations of energy requirements for cement production based on figures supplied by the Portland Cement Association, 1990 data. Aggregate and hauling energy requirements based on data supplied by PCA and based on the following assumptions:
• Cement hauled 50 miles to ready-mix plant
• Aggregate hauled 10 miles to plant
• Concrete mix hauled 5 miles to building site
• Concrete mix: 500 lbs. cement, 1,400 lbs. sand, 2,000 lbs. crushed stone, 260 lbs. water/yard.
[close window]
