کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6725446 503609 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of a non-cement binder using slag, palm oil fuel ash and rice husk ash with sodium hydroxide
ترجمه فارسی عنوان
ساخت یک گیره بدون سیمان با استفاده از خاکستر، روغن خاکستری، روغن نخل و خاکستر پوسته برنج با هیدروکسید سدیم
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The aim of the study is to fabricate a new non-cement binder (NCB) using slag, palm oil fuel ash (POFA) and rice husk ash (RHA). To activate these materials, sodium hydroxide (NaOH) was used at 2.5%, 5.0% and 7.5% by weight of NCB. Four different mix ratios of the slag, POFA and RHA were designed to fabricate the NCB. Mortar-prisms of NCB were cast using water-to-binder ratio of 0.5 and 0.6 with required superplasticizer. Mortar specimens were immersed in a water bath at 25 ± 2 °C for curing. NCB was tested for its consistency, setting time, flow, flexural and compressive strengths. XRD, SEM and FTIR analyses of NCB-mortars were also obtained. The results revealed that the consistency, setting time, flow and strength of NCB-paste/mortars are greatly influenced by the mix proportion and fineness of constituent materials of NCB, and NaOH doses. NCB-mortar containing 42% slag, 28% POFA and 30% RHA with 5% NaOH achieves the highest compressive strength of 40.68 MPa and a flexural strength of 6.57 MPa at 28 days. From the FTIR analysis, NCB-mortars are observed to have silica-hydrate bond with sodium or other inorganic metals (i.e., sodium-silica-hydrate-alumina gel). Therefore, NCB could be fabricated from the aforementioned materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 49, December 2013, Pages 894-902
نویسندگان
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