کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257978 503604 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of self-desiccation on the pore structure of paste and mortar incorporating 70% GGBS
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Effect of self-desiccation on the pore structure of paste and mortar incorporating 70% GGBS
چکیده انگلیسی


• GGBS refines pores and creates a distribution peak for pore range within 10 nm.
• GGBS tends to increase substantially the pore entrapment for MIP.
• Archie’s law is just roughly obeyed by GGBS incorporated materials.
• Pore self-desiccation is enhanced by low w/b and sealed curing.
• Self-desiccation percolates pores at μm level but densifies CSH at nm level.

This paper investigates the pore structure of cement-based materials with/without 70% ground granulated blastfurnace slag (GGBS). The emphasis is put on the effect of self-desiccation. Pore characterization parameters include total porosity, specific surface area (SSA), pore size distribution (PSD), pore entrapment and surface fractal dimension. The results show: (1) pore refinement by GGBS is evident and GGBS increases substantially the SSA and fractal dimension values; (2) the pore refinement moves pore distribution from the range of 10 nm–100 nm to that of <<10 nm; (3) the self-desiccation under sealed-curing creates a PSD peak in the range of >>100 nm and compacts the nanostructure of hydrates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 51, 31 January 2014, Pages 329–337
نویسندگان
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