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Experimental and Numerical Techniques to Characterize Structural Properties of Fresh Concrete

[+] Author Affiliations
Tony Di Carlo

Boeing, Huntington Beach, CA

Behrokh Khoshnevis, Anders Carlson

USC, Los Angeles, CA

Paper No. IMECE2013-63993, pp. V009T10A062; 8 pages
doi:10.1115/IMECE2013-63993
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 9: Mechanics of Solids, Structures and Fluids
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5638-3
  • Copyright © 2013 by ASME

abstract

This research explores the structural properties of fresh concrete. The work is relevant wherever green, or uncured, concrete must be load-bearing. In traditional concreting, rigid forms mold and protect young concrete, and these forms are not removed until the maturing material has developed considerable load-bearing strength. Conversely, an automated construction technology under development at the University of Southern California, proposes to rapidly fabricate civil structures additively — layering continuous ribbons of fresh unconfined concrete — the freshly layered concrete must be load-bearing immediately upon placement. This is an unprecedented structural requirement, and little has been done to substantiate uncured concrete in such a load-bearing capacity. With emphasis on expedient experimental techniques, early maturity, and time-dependent constitutive modeling, this research develops the engineering necessary to erect these structures safely.

Copyright © 2013 by ASME

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