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Article
USING LOCAL IRAQI MATERIALS IN PRODUCTION OF REFRACTORY BONDING MORTAR

Authors: Katreen E. Al Hwaidy --- Osama A. Eedan --- Shatha S. Hassan
Journal: KUFA JOURNAL OF ENGINEERING مجلة الكوفة الهندسية ISSN: 25230018 Year: 2018 Volume: 9 Issue: 2 Pages: 91-102
Publisher: University of Kufa جامعة الكوفة

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Abstract

The Iraqi kaolin clay was used as a raw material in this research. three mix proportion was applied, (96:4), (93:7) and (90:10) as (kaolin grog: kaolin binding ). The specimens of mortar were burning at 1500ᵒC, after producing a refractory aggregate (grog) by preparation process mixing with sodium silicate solution as adhesive material with 5% by weight of the mix. The mechanical tests were carried (compressive and bonding) strength, durability investigations (thermal shrinkage, and reheating expansion), and the physical investigation was carried (bulk density, specific gravity, apparent porosity and water absorption). It was found the first mix (96:4) recorded the highest compressive strength befor burning and bonding after burning, and the best physical properties after burning at 1500 ºC, with mix proportion (96: 4), while the highest compressive strength after burning were the mix three (90: 10).


Article
STUDY THE EFFECT OF USING LOCAL MATERIALS AS REFRACTORY BONDING MORTAR IN IRAQI
دراسة تأثير استخدام المواد المحلية كمونة رابطة حرارية

Authors: Katreen E. Al Hwaidy كاترين عيسى عزيز --- Shatha S. Hassan شذى صادق حسن --- Osama A. Eedan اسامة عبد الامير عيدان
Journal: KUFA JOURNAL OF ENGINEERING مجلة الكوفة الهندسية ISSN: 25230018 Year: 2018 Volume: 9 Issue: 1 Pages: 143-157
Publisher: University of Kufa جامعة الكوفة

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Abstract

In this research, Iraqi bauxite was used as raw material, after preparation the producing a grog. The mix proportion was applied, (96:4), (93:7) and (90:10) as (bauxite grog: kaolin binding ), and the sodium silicate solution as adhesive material 5% by weight of the mix.The burning temperatures for specimens' producing were 1450ᵒC. The physical investigation was carried such as (bulk density, specific gravity, apparent of porosity and water absorption). While the mechanical tests (compressive, bonding) strength, durability investigations such as (thermal shrinkage, reheating expansion and thermal shock). It was found the third group recorded the highest compression and bonding strength and thermal shock resistance and the best physical properties after burning at 1450 ºC, with mix proportion (90: 10).

في هذا البحث تم استخدام اطيان البوكسايت العراقي كمادة اولية بعد تحضيرها لانتاج الركام الحراري (كروك). تم ) ( ركام البوكسايت الحراري: المادة الرابطة الكاؤولين) وكذلك محلول 10 :90) و (7 :93( ,)4 :96تطبيق ثلاث نسب ( )1450% من وزن العينة لكل خلطة . كانت درجة حرارة حرق العينات تصل الى (5سليكات الصوديوم كمادة لاصقة بنسبة درجة مئوية . تم اجراءالتحريات الفيزيائية مثل ( الكثافة الظاهرية , الوزن النوعي, المسامية الظاهرية, و امتصاص الماء) . بينما الفحوصات الميكانيكية التي اجريت على العينات هي ( مقاومة الانضغاط , مقاومة الربط) وكذلك فحوصات الديمومة مثل ) اعلى مقاومة 10:90 (الانكماش الحراري, التمدد بعد اعادة الحرق والصدمة الحرارية ) حيث سجلت الخلطة الثالثة ( م.º 1450للانضغاط والربط والصدمة الحرارية وافضل خواص فيزيائية بعد الحرق بدرجة.

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