I would like to respond to the numbers game and the "science" that the Portland Cement Association has initiated as reported in Tudor Van Hampton's article "Concrete Goes to College" (ENR 1/23/p. 8).
First, Congress is not in the business of selecting materials for roadbuilding. Nor should it be. If congressmen were to dig into life-cycle cost analysis (LCCA) as presented by Massachusetts Institute of Technology's Concrete Sustainability Hub (CSH), funded by PCA, they would find the idea of asphalt pavement costing double that of concrete pavement ludicrous.