Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal

The suitability of Portland cement blends for encapsulation of Cs-Ionsiv in a monolithic wasteform was investigated. No evidence of reaction or dissolution of the Cs-Ionsiv in the cementitious environment was found by scanning electron microscopy and X-ray diffraction. However, a small fraction (≤1.6 wt%) of the Cs inventory was released from the encapsulated Ionsiv during leaching experiments carried out on hydrated samples. Cs release was enhanced by exchange of K and Na present in the cementitious pore water. Cement systems lower in K and Na, such as slag based blends, showed lower Cs release than the fly ash based analogues. © 2010 Materials Research Society.

Support document for proposed rule on friable asbestos-containing materials in school buildings : health effects and magnitude of exposure.

Mode of access: Internet.

Guidance for controlling asbestos-containing materials in buildings.

Mode of access: Internet.

Information on the Asbestos in Schools Abatement Act (ASHAA).

Mode of access: Internet.

Managing asbestos in place : a building owner's guide to operations and maintenance programs for asbestos-containing materials.

"July 1990"--Cover.

Water filtration for asbestos fiber removal /

EPA-600/2-79-206.

Revised recommended asbestos standard.

Mode of access: Internet.

An evaluation of vacuum equipment for collection of asbestos waste /

"Contract no. 210-77-0053."

Interim method for determining asbestos in water /

"January 1980."

Asbestos-containing materials in school buildings : bulk sample analysis quality assurance program : bulk sample rounds 16, 17 and 18 /

Mode of access: Internet.

Study of fiber release during routine maintenance of asbestos containing floor tile : cooperative research and development agreement with Chemical Specialties Manufacturing Association, Inc.

Mode of access: Internet.

Measurement of asbestos air pollution inside building sprayed with asbestos /

"French report adapted under contract no. 68-01-5915."

Guidance for controlling friable asbestos-containing materials in buildings /

"EPA560/5-83-002"--Cover.

Sampling and evaluating airborne asbestos dust (582).

"June 1988."