کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6715227 1428740 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use of slaked lime and Portland cement to improve the resistance of MSWI bottom ash-GBFS geopolymer concrete against carbonation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Use of slaked lime and Portland cement to improve the resistance of MSWI bottom ash-GBFS geopolymer concrete against carbonation
چکیده انگلیسی
This study investigated the resistance of municipal solid waste incinerator bottom ash geopolymer concrete (BA), Ca(OH)2-modified BA, and Portland cement-modified BA against carbonation using the accelerated carbonation test. The resistance enhancing effects and resistance enhancing mechanism of Ca(OH)2 and Portland cement against carbonation of BA were studied via periodic monitoring of carbonation depth and microscopic analysis of carbonation products. The results show that BA has a decreased resistance against carbonation compared to cement concrete; Ca(OH)2 and Portland cement can both enhance the resistance against BA carbonation. Larger contents will lead to larger enhancements. The enhancing effect of Portland cement on the carbonation resistance of BA exceeds that of Ca(OH)2. The main reason for this is the polymerization of the initial stage of hydration consuming part of the Ca(OH)2, which lowers the effective Ca(OH)2 content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 166, 30 March 2018, Pages 290-300
نویسندگان
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