کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1457398 989258 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Appraisal of a cementitious material for waste disposal: Neutron imaging studies of pore structure and sorptivity
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Appraisal of a cementitious material for waste disposal: Neutron imaging studies of pore structure and sorptivity
چکیده انگلیسی

Cementitious materials are conventionally used in conditioning intermediate and low level radioactive waste. In this study a candidate cement-based wasteform has been investigated using neutron imaging to characterise the wasteform for disposal in a repository for radioactive materials. Imaging showed both the pore size distribution and the extent of the cracking that had occurred in the samples. The rate of the water penetration measured both by conventional sorptivity measurements and neutron imaging was greater than in pastes made from Ordinary Portland Cement. The ability of the cracks to distribute the water through the sample in a very short time was also evident.The study highlights the significant potential of neutron imaging in the investigation of cementitious materials. The technique has the advantage of visualising and measuring, non-destructively, material distribution within macroscopic samples and is particularly useful in defining movement of water through the cementitious materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 40, Issue 8, August 2010, Pages 1320–1326
نویسندگان
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