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Register a new userRepairing of Steel Pipelines Defects by Using Epoxy Material
إصلاح عيوب الأنابيب الفولاذية باستخدام مادة الايبوكسي
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يتناول هذا البحث كيفية القيام بعملية إصلاح عيوب الأنابيب الفولاذية بطريقة سهلة و بسيطة. في البداية تنظف المنطقة المحيطة بالعيب ثم تطبق مادة الايبوكسي فوق العيب بعد مزج الريزين مع المقسي بشكل جيد. تعتمد أبعاد طبقة الايبوكسي على أبعاد العيب الموجود في الأنبوب. بعدها تترك العينة فترة من الزمن لتتحقق عملية التصلب. استخدمت عدة أنواع من الايبوكسي لتحضير مجموعة من العينات التي تم اختبارها على جهاز الضغط لتقييم فعالية هذه الطريقة في الإصلاح و معرفة قيم الضغط الذي يمكن أن تتحمله طبقة الايبوكسي. تمت معالجة أنبوب يحوي ثلاثة ثقوب متساوية الأقطار باستخدام ALTECO QUICK EPOXY STEEL و سجل مقياس الضغط قيماً وصلت حتى 18 بار. رسم المنحني الممثل للعلاقة بين الضغط الذي تتحمله طبقة الايبوكسي و مساحتها السطحية، و وجد أن العامل الأكثر تأثيراً في عملية الإصلاح هو طريقة تحضير العينة و سماكة طبقة الايبوكسي.
This research carries how to do steel pipelines defects repair process by a simple and easy way. At first the region that surrounds the defect is cleaned then the epoxy material is put over the defect after mixing the resin with the hardener well. Epoxy layer dimensions depend on the defect dimensions that exists in the pipe. After that, the specimen is released for a period of time to obtain the setting process. Several types of epoxy were used for preparing series of specimens, which were tested on the pressure set up to estimate the efficiency of this way in the repair, and knowing the pressure values that epoxy layer can carry. A pipe of three holes their radius are equal, was treated by using ALTECO QUICK EPOXY STEEL and the pressure gauge recorded many values that reached 18 bar. The curve, that represents the relationship between the pressure which the epoxy layer carried and its surface area, was drawn. It is found that the most effect factor in the repair process is the specimen preparing and the thickness of the epoxy layer.
References used
COSTA-MATTOS, H. S; REIS, J. M. L; SAMPAIO, R.F & Perrut, V. A. A simple methodology to repair localized corrosion damage in metallic pipelines with epoxy resins. Brazilian Society of Mechanical Sciences and Engineering, 2009, 20
TENG, J.G& HU, Y.M. Behavior of FRP-jacketed circular steel tubes and cylindrical shells under axial compression. ScienceDirect, Hong Kong, China, Construction and Building Materials, vol. 21, 2007, 827–838
SHAMSUDDOHA, M; ISLAM, M. M; ARAVINTHAN, T & MANOLA, A. "Fibre Composites for High Pressure Pipeline Repairs, in-air and subsea-An Overview." Hokkaido University, Japan, 2012, 8
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