کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6718416 503532 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of building material utilizing a low pozzolanic activity mineral
ترجمه فارسی عنوان
توسعه مواد ساختمانی با استفاده از فعالیت معدنی پوزولانی پایین
کلمات کلیدی
فعالیت پوزولانی پایین، قلیایی ملات فعال، نوع فعال کننده، پیشرفت هیدراتاسیون، ویژگی های مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this work, the effects of different activators, particle size and curing conditions on the mechanical properties and hydration progress of alkali activated Pisha mortars were studied. Four different activators (NaOH, Na2CO3, Na2SO4 and water glass) based on two different fineness Pisha were used, two kinds of curing temperature, 25 and 80 °C were considerate. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG) and scanning electron microscopy (SEM) were conducted to analyze the reaction products, indentify the phase composition and observe the micro-morphology, respectively. It was found that the modulus of water glass and fineness of Pisha have significant influence on the compressive strength and hydration process of alkali activated Pisha mortars. The optimum activators were water glass, the sample (Ms = 1.5, curing at 80 °C) exhibited the highest compressive strength (14.4 MPa) at 28 days. The results of the investigation also show that the amorphous aluminosilicate gels were the main hydration products.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 121, 15 September 2016, Pages 300-309
نویسندگان
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