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Mineralogical, geochemical, and geotechnical evaluation of Al-Sowera soil for the building brick industry in Iraq

Content Provider	Springer Nature Link
Author	Awadh, Salih Muhammad Abdullah, Hamed Hassan
Copyright Year	2009
Abstract	The raw material soil of Al-Sowera factory quarry (quarry soil and mixture) used for building brick industry was tested mineralogically, geochemically and geotechnically. Mineral components of soil are characterized by Clay minerals (Palygoriskite and chlorite) and non-clay minerals like calcite, quratz, feldspar, gypsum and halite. The raw material is deficient in SiO$_{2}$, Al$_{2}$O$_{3}$, K$_{2}$O, Fe$_{2}$O$_{3}$ and MgO, while enriched in CaO. Loss on ignition and Na$_{2}$O are in suitable level and appear to be concordant with the standard. Grain size analyses show that the decreasing sand and clay, and increasing silt ratio in both quarry soil and mixture caused decreasing in strength of brick during molding and after firing. The quarry soil is characterized by high plasticity clayey soil of 30.49 plastic index (P.I), whereas the mixture considered a clayey soil has a low plasticity of 7.7 plastic index (P.I). To improve the chemical and physical properties of the raw material, alumina-silicate minerals rich in K$_{2}$O, Fe$_{2}$O$_{3}$ and MgO are recommended as additive materials to the main mixture.تم إختبار تربة مقلع معمل الصويرة (المأخوذة من كل من المقلع و الخلطة) المستعملة في صناعة طابوق البناء معدنياً وجيوكيميائياً وجيوتكنيكياً. تميزت المكونات المعدنية بالمعادن الطينية (الباليكورسكايت والكلورايت) والكلسايت والكوارتز والفلدسبار والجبسم والهالايت. المادة الاولية تعاني من شحة فيSiO و Al2O3 و K2O وFe2O3 و MgO , بينما تكون غنية ب CaO .إن نسبة مفقودات الحرق و Na2O تكون ضمن المستوى المناسب ومنسجمة مع القيم القياسية. بين التحليل الحجمي الحبيبي بأن نقص الرمل والطين وزيادة نسبة السلت في كل من تربة المقلع وتربة الخلطة قد سبب نقص في قوة الطابوق خلال عملية القولبة وكذلك بعد عملية الحرق. بلغت قيمة معامل المرونة لتربة المقلع 30.49 دالة بذلك على تربة طينية مرنة, في حين بلغت قيمة معامل المرونة للخلطة 7.7 دالة بذلك على تربة طينية واطئة المرونة. لغرض تحسين المواصفات االكيميائية والفيزيائية للمادة الأولية , يوصى بأضافة معادن المنيوسلكاتية غنية بأكاسيد البوتاسيوم والحديد والمغنيسيوم الى الخلطة.
Starting Page	413
Ending Page	419
Page Count	7
File Format	PDF
ISSN	18667511
Journal	Arabian Journal of Geosciences
Volume Number	4
Issue Number	3-4
e-ISSN	18667538
Language	Arabic
Publisher	Springer-Verlag
Publisher Date	2009-08-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geochemistry Liquid limit Plastic limit Raw materials Building bricks Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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