Summary report on close-coupled subsurface barrier technology: Initial field trials to full-scale demonstration

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The primary objective of this project was to develop and demonstrate the installation and measure the performance of a close-coupled barrier for the containment of subsurface waste or contaminant migration. A close-coupled barrier is produced by first installing a conventional, low-cost, cement-grout containment barrier followed by a thin lining of a polymer grout. The resultant barrier is a cement-polymer composite that has economic benefits derived from the cement and performance benefits from the durable and resistant polymer layer. The technology has matured from a regulatory investigation of the issues concerning the use of polymers to laboratory compatibility and performance measurements ... continued below

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190 p.

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Heiser, J.H. & Dwyer, B. September 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 43 times , with 4 in the last month . More information about this report can be viewed below.

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  • Heiser, J.H. Brookhaven National Lab., Upton, NY (United States). Environmental and Waste Technology Center
  • Dwyer, B. Sandia National Lab., Albuquerque, NM (United States)

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Description

The primary objective of this project was to develop and demonstrate the installation and measure the performance of a close-coupled barrier for the containment of subsurface waste or contaminant migration. A close-coupled barrier is produced by first installing a conventional, low-cost, cement-grout containment barrier followed by a thin lining of a polymer grout. The resultant barrier is a cement-polymer composite that has economic benefits derived from the cement and performance benefits from the durable and resistant polymer layer. The technology has matured from a regulatory investigation of the issues concerning the use of polymers to laboratory compatibility and performance measurements of various polymer systems to a pilot-scale, single column injection at Sandia to full-scale demonstration. The feasibility of the close-coupled barrier concept was proven in a full-scale cold demonstration at Hanford, Washington and then moved to the final stage with a full-scale demonstration at an actual remediation site at Brookhaven National Laboratory (BNL). At the Hanford demonstration the composite barrier was emplaced around and beneath a 20,000 liter tank. The secondary cement layer was constructed using conventional jet grouting techniques. Drilling was completed at a 45{degree} angle to the ground, forming a cone-shaped barrier. The primary barrier was placed by panel jet-grouting with a dual-wall drill stem using a two part polymer grout. The polymer chosen was a high molecular weight acrylic. At the BNL demonstration a V-trough barrier was installed using a conventional cement grout for the secondary layer and an acrylic-gel polymer for the primary layer. Construction techniques were identical to the Hanford installation. This report summarizes the technology development from pilot- to full-scale demonstrations and presents some of the performance and quality achievements attained.

Physical Description

190 p.

Notes

INIS; OSTI as DE98004917

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  • Other Information: PBD: Sep 1997

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  • Other: DE98004917
  • Report No.: BNL--52531
  • Grant Number: AC02-76CH00016
  • DOI: 10.2172/658171 | External Link
  • Office of Scientific & Technical Information Report Number: 658171
  • Archival Resource Key: ark:/67531/metadc708270

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • September 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • June 14, 2016, 9:22 p.m.

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Heiser, J.H. & Dwyer, B. Summary report on close-coupled subsurface barrier technology: Initial field trials to full-scale demonstration, report, September 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc708270/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.