کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10621910 989038 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Early-age autogenous and drying shrinkage behavior of cellulose fiber-reinforced cementitious materials
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Early-age autogenous and drying shrinkage behavior of cellulose fiber-reinforced cementitious materials
چکیده انگلیسی
The objective of this study was to determine how the early-age shrinkage behavior of cementitious materials is affected by the addition of saturated cellulose fibers under sealed and unsealed conditions. The sealed condition simulates autogenous shrinkage exclusively while the unsealed condition introduces drying shrinkage, as well. Although the primary focus was to determine whether saturated cellulose fibers are suitable to mitigate autogenous shrinkage as an internal curing agent, evaluating their effect under drying conditions provided further insight into the overall shrinkage behavior of the composite material. At additions of 1% by mass of cement, the cellulose fibers were found to show significant drying shrinkage cracking control while providing some internal curing. In addition, early-age shrinkage test results were supplemented with a quantitative measure of fiber dispersion based on comparing theoretical and experimental values of the fiber volume fraction in hardened cementitious samples. Results indicated that improved dispersion leads to improved properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 33, Issue 2, February 2011, Pages 201-208
نویسندگان
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