کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10225322 | 1701168 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of chloride transport in blended cement mortars containing coal mining waste
ترجمه فارسی عنوان
بررسی حمل و نقل کلرید در ملات مخلوط سیمان حاوی ضایعات زغال سنگ
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کلمات کلیدی
زباله های زغال سنگ، سیمان مخلوط، نفوذ کلرید، نمک نمک نمک فریدل، مقاومت الکتریکی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
In this study, the effect of the addition of a thermally activated coal mining waste (CMW) on the chloride permeability of blended cements in amounts from 10 to 50% was assessed by salt ponding test. The parameters involved in the infiltration of chloride have been evaluated by XRD, TG and MIP techniques, as well as by electric resistivity measurements. A remarkable improvement in chloride diffusion was found as the CMW content increased, which has resulted in a decrease of one order of magnitude in the chloride diffusion coefficients of specimens containing 50% of CMW (2.7·10â12â¯m2/s) with respect to OPC samples (20·10â12â¯m2/s). The chemical analyses have shown that immobilization of chloride ions as Friedel's salt takes place as a result of their reaction with the abundant hydrated aluminate phases formed as a consequence of the high alumina content in CMW. Moreover, it has been observed a refinement of the capillary network with the addition of CMW that has been manifested through a decrease in pore size and a subsequent increase in electrical resistivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 190, 30 November 2018, Pages 200-210
Journal: Construction and Building Materials - Volume 190, 30 November 2018, Pages 200-210
نویسندگان
Laura Caneda-MartÃnez, Moisés FrÃas, César Medina, Mª Isabel Sánchez de Rojas, Nuria Rebolledo, Javier Sánchez,