Title: Products & Practice Spotlight: Manufacture and Placement of Ultra Heavyweight Concrete

Author(s): Jim Noller, Manjit Chopra, Kyle Hargreaves, and Brian H. Green

Publication: Concrete International

Volume: 38

Issue: 12

Appears on pages(s): 47-50

Keywords: aggregate, steel, specific gravity, mixture

DOI:

Date: 12/1/2016

Abstract:
Heavyweight concrete was used for radiation shielding of a new emergency department located above the future radiation oncology department at the Lahey Hospital and Medical Center in Burlington, MA. The concrete mixture incorporated steel aggregate with specific gravity (SG) of 7.74 and coarse and fine crushed, high-density, mineral aggregates with SG of 5.0. Design and mixture requirements, as well as material delivery and concrete placement, are discussed.