کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454706 1509688 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Methodology for nanoindentation-assisted prediction of macroscale elastic properties of high performance cementitious composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Methodology for nanoindentation-assisted prediction of macroscale elastic properties of high performance cementitious composites
چکیده انگلیسی


• Two-step homogenization for predicting elastic properties of a HPCC.
• Application of the methodology to highly heterogeneous cementitious material.
• Reducing experimental demands by using strictly local nanoindentation measurements.
• Comparison of analytical and numerical homogenization schemes.
• Verification of model prediction by static and dynamic moduli mea-surements.

This paper describes a methodology applied for determination of macroscale elastic properties of high performance cementitious composites (HPCC) based on nanoindentation measurements. For that, the elastic properties of HPCC mixtures with quartz filler and fly ash were evaluated at different length scales by nanoindentation (microscale) and the static and dynamic elastic moduli and compressive strength tests (macroscale). The nanoindentation results, obtained from a representative microlevel area by grid indentation with subsequent phase deconvolution, were complemented by an independent porosimetry test and inserted into a two-step analytical homogenization scheme to predict the overall macroscale properties. The final results indicate that the presented methodology allows a reliable advanced prediction of HPCC elastic properties, which is promising for the concrete industry since it would allow for reducing the number of large scale experiments and producing of a more predictable composite in an easier and experimentally less expensive way.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 45, January 2014, Pages 57–68
نویسندگان
, , ,