Agathe Bourchy
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View article: Influence of bioresource on mineral binders hydration and vegetal concretes compressive strength
Influence of bioresource on mineral binders hydration and vegetal concretes compressive strength Open
International audience
View article: Iodine Removal from Carbonate-Containing Alkaline Liquids Using Strong Base Resins, Hybrid Resins, and Silver Precipitation
Iodine Removal from Carbonate-Containing Alkaline Liquids Using Strong Base Resins, Hybrid Resins, and Silver Precipitation Open
The ability of several material types to remove aqueous iodine from a mildly alkaline, carbonate-rich nuclear waste stream was evaluated: strong base anion exchange resins (SBAR), hybrid resins, Ag-containing materials and Bi-containing hy…
View article: Effects of Ceria on the Mineralogical and Mechanical Properties of Cement Matrices
Effects of Ceria on the Mineralogical and Mechanical Properties of Cement Matrices Open
Cementation for the treatment, storage and disposal of nuclear waste is used at a global scale.As a waste form, the hydrating reactions that create the cementitious matrix can be initiated by water in liquid nuclear wastes, thus immobilizi…
View article: Evaluation of Degradation Mechanisms for Solid Secondary Waste Grout Waste Forms
Evaluation of Degradation Mechanisms for Solid Secondary Waste Grout Waste Forms Open
The overall objective of this work is to provide defensibility for the long-term performance of grouted Hanford SSW streams when disposed in a near surface disposal facility, IDF, on the Hanford Site. Providing defensibly for the long-term…
View article: An exploration of benchtop X‐ray emission spectroscopy for precise characterization of the sulfur redox state in cementitious materials
An exploration of benchtop X‐ray emission spectroscopy for precise characterization of the sulfur redox state in cementitious materials Open
The evolution of sulfur chemistry in cements is best known in the bailiwick of failure mechanisms via sulfate attack, but is equally important for its contributions to the reduction capacity of cementitious materials often used for immobil…
View article: Polyacrylonitrile Composites of Ag–Al–Si–O Aerogels and Xerogels as Iodine and Iodide Sorbents
Polyacrylonitrile Composites of Ag–Al–Si–O Aerogels and Xerogels as Iodine and Iodide Sorbents Open
Mechanically robust engineered sorbents were constructed by embedding Ag-loaded aerogels or xerogels in a polyacrylonitrile (PAN) matrix at 30 or 50 mass% loadings of gel in PAN. Here, the process for making the base gels as well as the co…
View article: Competitive TcO<sub>4</sub><sup>–</sup>, IO<sub>3</sub><sup>–</sup>, and CrO<sub>4</sub><sup>2–</sup> Incorporation into Ettringite
Competitive TcO<sub>4</sub><sup>–</sup>, IO<sub>3</sub><sup>–</sup>, and CrO<sub>4</sub><sup>2–</sup> Incorporation into Ettringite Open
Ettringite is a naturally occurring mineral found in cementitious matrices that is known for its ability to incorporate environmentally mobile oxyanion contaminants. To better assess this immobilization mechanism for contaminants within ce…
View article: Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste
Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste Open
At the Department of Energy’s Hanford site, over 53 million gallons of chemically complex and radioactive wastes have been stored in 177 underground tanks. The Hanford Tank Waste Treatment and Immobilization Plant (WTP) is under constructi…
View article: Iodine Waste Form Corrosion: PNNL Summary Testing Report
Iodine Waste Form Corrosion: PNNL Summary Testing Report Open
A test method to correlate the laboratory corrosion behavior of iodine-containing waste forms (IWFs) to a conceptual long-term corrosion models is required. Several candidate methods have been evaluated previously, and each method presents…
View article: Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste
Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste Open
Solid secondary waste materials expected to be generated during Hanford Waste Treatment and Immobilization Plant (WTP) operations were characterized (using representative materials) with respect to their ability to retain technetium-99 (Tc…