کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258463 503617 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strength and durability of cement with forest waste bottom ash
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Strength and durability of cement with forest waste bottom ash
چکیده انگلیسی

Every year more than 1 m3 of concrete is produced per person worldwide with cement accounting for 5–8% CO2 emissions and a growing use of mineral additions. Timber processing waste, a sustainable and renewable source for energy production, leads to significant amounts of wood-waste fly ash which has been used in concrete of acceptable strength and durability. Grate operated wood waste power plants produce immense volumes of bottom-ash, not studied to date. This study focused on characterising ground bottom-ash (GWA) with strength and durability assessment as cement replacement in mortar. Durability-related properties tested at 80 days generally revealed marginal loss but from around 3 months, strength surpassed control attaining 12% higher values at 1 year. Although tested nonpozzolanic due to crystallinity, GWA may be used as filler in cement-based materials further contributing to sustainable construction.


► Grate operated biomass power-plants produce bottom-ash (WA), not studied to date.
► Ground WA (GWA) was used as a cement (5% and 10%) replacement in paste and mortar.
► Hydration was observed on paste with a novel technique Cryo SEM.
► GWA mortar showed marginal durability loss but improved strength at later ages.
► GWA, non-glassy, may be used as a filler, contributing to sustainable construction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 41, April 2013, Pages 897–910
نویسندگان
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