Continuous Stiffness Monitoring of Cemented Sand through Resonant Frequency

Mixture formulation and in-situ quality control of the stabilized soils often represent difficult and challenging tasks. The present paper addresses the possibility of using a variant to a recently developed non-destructive technique for continuous monitoring of stiffness of hardening materials as a supporting means to the above-mentioned tasks. The material to be tested is placed inside a polycarbonate mold placed in simply supported conditions. The technique is based on the continuous monitoring of the first resonant frequency of this composite beam, which evolves as a consequence of the hardening of the material, and can be correlated with its E-modulus. The usefulness and potential of this experimental methodology for mixture formulation and quality control of stabilized soils is shown through a series of tests conducted on laboratory since the instant of mixing until 7 days. The conducted tests include complementary methodologies of characterization such as E-modulus measured on specimens with strain instrumentation, as well as monitoring with recourse to bender-extender elements.

• Record URL:
  • https://doi.org/10.1061/47629(408)22
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784476291
• Supplemental Notes:
  • Copyright © 2011 ASCE
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Azenha, Miguel
  • Ferreira, Cristiana
  • Silva, Jacinto
  • Correia, A. Gomes
  • Aguilar, Rafael
  • Ramos, Lui´s F.
• Conference:
  • GeoHunan International Conference 2011
  • Location: Hunan , China
  • Date: 2011-6-9 to 2011-6-11
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Pagination: n.p.
• Monograph Title: Emerging Technologies for Material, Design, Rehabilitation, and Inspection of Roadway Pavements

Subject/Index Terms

• TRT Terms: Cement treated soils; Monitoring; Resonance frequency; Soil stabilization; Stiffness
• Subject Areas: Geotechnology; Highways; I40: Soils and Rocks;

Filing Info

• Accession Number: 01347906
• Record Type: Publication
• ISBN: 9780784476291
• Files: TRIS, ASCE
• Created Date: Aug 8 2011 2:23PM