The Feasibility of Incorporating Radioactive Wastes in Asphalt or Polyethylene

Fitzgerald, C.L.; Godbee, H.W.; Blanco, R.E.; Davis, W.

doi:10.13182/nt70-a28714

Cited by 9 publications

(4 citation statements)

References 1 publication

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“…However, most of the data available on the performance properties of asphalt barriers are from freshly manufactured materials. A large portion of this information is available in literature associated with the use of asphalt as a matrix for solidification of low-level radioactive wastes (Fitzgerald et al 1970;MRM Partnership 1988;Fuhrmann et al 1989). Some of: the data associated with solidification of low-level radioactive wastes will be useful, but generally those data do not address the specific needs of subsurface barriers.…”

Section: Historical Asphalt Applicationsmentioning

confidence: 99%

Hanford Permanent Isolation Barrier Program: Asphalt technology data and status report - FY 1994

Freeman¹,

Romine²

1994

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Section: Historical Asphalt Applicationsmentioning

confidence: 99%

Hanford Permanent Isolation Barrier Program: Asphalt technology data and status report - FY 1994

Freeman¹,

Romine²

1994

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“…However, most of the data available on the performance properties of asphalt barriersare from freshly manufacturedmaterials. A large portion of this information is available in literatureassociated with the use of asphalt as a matrix for solidification of low-level radioactive wastes (MRM Partnership1988, Fuhrmannet al 1989Fitzgerald et al 1970). Some of the data associated with solidification of low-level radioactive wastes will be useful, but generally these data do not address the specific needs of subsurface barriers.…”

Section: Composite Asphalt Barriermentioning

confidence: 99%

Hanford Permanent Isolation Barrier Program: Asphalt technology test plan

Freeman¹,

Romine²

1994

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The Hanford Permanent Isolation Barriersuse engineered layers of naturalmaterials to create an integrated structurewith redundant(backup)protective features. The naturalconstruction , materials (e.g., fine soil, sand, gravel, riprap, asphalt)have been selected to optimize barrier performance and longevity. The objective of currentdesigns is to develop a maintenance-free permanent isolation surface barrierthat isolates wastes for a minimum of 1000 years by limiting water drainageto near-zeroamounts;reducingthe likelihood of plant, animal, and human intrusion; controlling the exhalation of noxious gases; and minimizing erosion-relatedproblems. Asphalt is being used as an impermeable water diversion layer to provide a redundantlayer within the overall barrierdesign. This redundancyensures barriercompliance should a breach of the overlying earthen layers occur. Data on asphalt barrierpropertiesin a buried environment are not available for the required 1000-year time frame. The purpose of this test plan is to outline the activities planned to obtain defensible long-term asphalt barrierdata through laboratoryexperiments and comparisons with natural analogs. These data will then be used to estimate performance of the asphalt layers over a range of potential disruptive events to ensure overall barriercompliance over the design life of the Hanford Permanent Isolation Barriers. Other informationon applicationtechniques and quality assurance/control procedureswill also be addressedto determine if modifications to standard asphalt paving practices are necessary to ensure the asphalt barrierwill meet the stringent performance objectives. This test plan outlines the work to be conducted by Pacific Northwest Laboratoryto meet these objectives. Work described in this test plan will be performed during a 4-year period beginning in FY 1994. The study is divided into the following activities: 1. Develop a defensible accelerated aging test procedureto allow measurementsof asphalt barrier properties as a function of age for a minimum of 1000 years. 2. Age potential asphalt barriermaterials over a range of conditions expected in the subsurface environment, includingtemperature, oxygen content, moisture, and the presence of gases or ions producedby the underlying soil and waste forms. 3. Measurethe changes in fundamentalasphalt barrierproperties using standardand modified asphalt testing procedures to provide the database of information requiredto assess the longterm performance of the asphalt barriersystem.

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“…Very few side chain branches in the HDPE molecule result in a close packed or dense structure. HDPE densities range between 0.941 and 0.959 g/cm 3 . Medium density polyethylenes (0.926 -0.940 g/cm 3 ) can be formulated by either high or low pressure methods, or by combining LDPE and HDPE materials.…”

Section: Properties Of Polyethylenementioning

confidence: 99%

Polyethylene solidification of low-level wastes

Kalb¹,

Colombo²

1985

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The Feasibility of Incorporating Radioactive Wastes in Asphalt or Polyethylene

Cited by 9 publications

References 1 publication

Hanford Permanent Isolation Barrier Program: Asphalt technology data and status report - FY 1994

Hanford Permanent Isolation Barrier Program: Asphalt technology data and status report - FY 1994

Hanford Permanent Isolation Barrier Program: Asphalt technology test plan

Polyethylene solidification of low-level wastes

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