دانلود مقاله Properties of lightweight geopolymer with waste ashes and palm oil clinker aggregates فایل ورد (word)
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سال انتشار: 1391
محل انتشار: اولین کنفرانس بین المللی مواد پیشرفته
تعداد صفحات: 9
چکیده:
In the present work, compressive strength of lightweight inorganic polymers (geopolymers) produced by fine fly ash and rice husk bark ash together with palm oil clinker (POC) aggregates has been investigated. Different specimens made from a mixture of fine fly ash and rice husk bark ash with and without POC were subjected to compressive strength tests at 2, 7 and 28 days of curing. The specimens were oven cured for 36 h at 80 oC and then cured at room temperature until 2, 7 and 28 days. Addition of POC to the geopolymeric mixtures caused reduced strength at all age of curing. However a considerable increase in strength to weight ratio was acquired for the specimen with a high content of fine POC particles at 28 days of curing. Thermogravimetric analysis and Fourier transform infrared spectroscopy both also are in agreement with the obtained results from compressive strength tests. It was shown that increasing the POC content reduced the weight loss during thermogravimetric analysis and hence increases the heat stability
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