Sequestering Lead in Paint by Utilizing Deconstructed Masonry Materials as Recycled Aggregate in Concrete. Revision 1

Abstract

A systematic study has been conducted to establish a rational mix design method for proportioning concrete utilizing recycled, lead-contaminated aggregate for field construction. A variety of concrete mixes were made with different aggregates, cements, and mixture proportions. The physical properties and lead leachability of the aggregates were characterized. The concrete workability, strength, and lead sequestration were evaluated. Eight mix design nomographs were developed. A cost analysis was conducted for hypothetical buildings under different disposal scenarios. The results showed that when appropriately designed and processed, concretes made with recycled, LBP-contaminated aggregates have physical properties that are satisfactory for a variety of constructions. Portland cement can effectively sequester LBP in the recycled aggregate because of it high alkalinity. These successful research results can significantly reduce the cost and environmental impact of Department of Defense (DoD) construction and deconstruction projects.

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Document Details

Document Type
Technical Report
Publication Date
May 27, 2008
Accession Number
ADA495766

Entities

People

  • James A. Gaunt
  • Jiong Hu
  • Kejin Wang

Organizations

  • Iowa State University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemistry
  • Compressive Strength
  • Construction
  • Construction Materials
  • Cost Analysis
  • Department Of Defense
  • Economic Analysis
  • Environment
  • Environmental Protection
  • Materials
  • Materials Science
  • Modulus Of Elasticity
  • Particle Size
  • Physical Properties
  • Statistical Analysis
  • Test Methods

Readers

  • Agricultural Chemistry/Soil Science
  • Environmental Engineering.
  • Pavement Materials Engineering.