Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101EFFICIENCY OF DIFFERENT STRENGTHENING TECHNIQUES ON SEISMIC PERFORMANCE OF R.C. FRAMES11510980010.21608/jesaun.2019.109800ENAhmed Adel MostafaCivil Engineering Department, Faculty of Engineering, Assuit UniversityWaleed Abo El WafaCivil Engineering Department, Faculty of Engineering, Assuit UniversityKhairy Hassan Abd El KareemCivil Engineering Department, Faculty of Engineering, Assuit UniversityJournal Article20180826<span>This paper presents a theoretical finite element study on effect of different strengthening techniques on structural behavior of the reinforced concrete frames subjected to earthquake motion. In the study, diagonal cross bracing, masonry infill wall, externally CFRP laminates, and reinforced concrete jacketing for columns are considered as different strengthening techniques of one story reinforced concrete bare frame. Time history analysis for the frame subjected to EL-Centro (1940 N-S) earthquake ground motion is carried out using ETABS software. The obtained results from the time history analysis including axial and shear stresses, lateral displacement, acceleration and base shear with time are illustrated and discussed with/ or without the strengthening techniques. The study illustrates the influence and enhancement of each technique on the performance of one story bare frame subjected to EL-Centro earthquake motion.</span>Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101EVALUATION OF THE NANO CEMENT PRODUCTION FOR CONCRETE STRUCTURES IN EGYPT162810980210.21608/jesaun.2019.109802ENMohamed S. KhalafallaConstruction Research Institute, NWRCJournal Article20181014<span>Production of Nano cement using Nanotechnology is considered a new potential approach in the construction material industry. It has the ability to decrease the size of the cement particle to the Nano scale which increases the cement chemical activity. In this technology, high-performance cement is produced while preserving the environment. To evaluate the economics of establishing a Nano cement unit in an existing typical factory in Egypt, the Cement Factories on canal way in Egypt are selected as a case study. The economic indicators used for the evaluation include Net Present Value (NPV), Internal Rate of Return (IRR), and Break Even Point (BEP). The results were used to decide on the feasibility of building Nano cement unit. It was found that Net Present Value has a positive amount between two interest rate 10% to 30%. The Internal Rate of Return indicator requires increasing the revenue by 38.80% above the interest rate of Central Bank of Egypt. Finally, Break Even Point is gained before one year of production of 720000 ton annually and within 6 years at variable cost/price. Therefore, establishing the product line of Nano cement in Egypt raises the economic return and enhances the concrete quality.</span>Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101A STUDY ON THE CUSHIONING EFFECT OF CLAY ON THE COMMINUTION OF THE CEMENT RAW MEAL293810980410.21608/jesaun.2019.109804ENSherein Ahmed M. E. RizkFaculty of Engineering, Beni-suef UniversityJournal Article20180925<span>Growth and success of any industry on the whole, depends primarily on the market demands, efficient technology and availability of input resources. In spite of development of different types of binders, cement continues to be the major building material for civil construction all over the world, as no other material is likely to substitute it in the near future. The normal flow sheet for cement production, either by dry or wet operations begins with crushing of the two main components. Either limestone or shale are crushed separately then, ground simultaneously as a mixture (80% limestone and 20% shale) in a ball mill. This procedure consumes more energy in grinding due to the act of the shale as cushions between the grinding elements (balls) and the crushed limestone particles. Consequently, the main objective of this investigation is to evaluate the cushioning effect of the shale during grinding the limestone and shale simultaneously as a mixture. It is confirmed that grinding the two components of the cement raw meal simultaneously as a mixture decreases the specific surface area of the product by 25% approximately. The relative suggestion is to grind these two components of the raw meal separately followed by adding blending unit before going to calciner.</span>Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101OPTIMIZATION OF THE ELECTROLESS NI-P COATING IN GLYCINE BATH BY TAGUCHI METHOD394710980610.21608/jesaun.2019.109806ENRefaie OmarMining and Metallurgical Eng. Depart, Faculty of Engineering, Assiut University, Egypt.M. S. AboraiaMining and Metallurgical Eng. Depart, Faculty of Engineering, Assiut University, Egypt.E. A. OrabyMining and Metallurgical Eng. Depart, Faculty of Engineering, Assiut University, Egypt.Journal Article20180925<span>Electroless Ni-P coatings use in engineering applications due to its ability to alter and improve the surface properties of the steel substrate. The present study investigates the influence of bath composition, which included nickel sulphate, sodium hypophosphite, and glycine on the deposition rate, coating roughness, and final coating microhardness with using of Taguchi techniqe. The results reveal that final coating roughness and hardness can be optimized by controlling bath composition. The achieved minimum average surface roughness (Ra) was 80.7 nm and the highest coating hardness was 1145 HV. </span>Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101أثر العمران الحالي ومفرداته المعمارية على الصورة البصرية لمدينة أسيوط بمصر486710984010.21608/jesaun.2019.109840ENوائل حسين يوسف أحمدقسم العمارة ـ کلية الهندسة ـ جامعة أسيوطJournal Article20180829<span>تعرضت مدينة أسيوط بمصر في الآونة الأخيرة لضغط عمراني ومعماري صاحبه العديد من عمليات التغريب الثقافي والمحکوم بأدوات ومفاهيم العولمة مما أفقدها هويتها وشخصيتها، مع غياب الکثير من المعايير والقيم التصميمية والتشکيلية والمحددات البصرية، وحُکمت الحرکة العمرانية بمفاهيم وثقافات شکلت تلک الکيانات بمفردات دخيلة ومستنسخة بالإضافة إلى فقدان الطابع المعماري والعمراني المميز للمدينة، الأمر الذي أدى إلى کثير من السلبيات في الصورة البصرية للمدينة شکلاً ومضموناً. تعتمد الدراسة على الأدبيات والمرجعيات الخاصة للصورة البصرية للمدينة بشکل عام ومفاهيمها القياسية ومعايير جودتها، لمناقشة الصورة البصرية الحالية لمدينة أسيوط، ووصف وتحليل مکوناتها، لاستنباط المشکلات في الوضع الراهن، والبحث عن حلول واقعية لمعالجة الصورة البصرية الحالية والمستقبلية للمدينة.</span>Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101THE CALIBRATION OF SHOPPING CENTER IN EGYPT ACCORDING TO INTERNATIONAL STANDARDS8611311707910.21608/jesaun.2019.117079ENIbrahim Hassan IbrahimDepartment of Architectural engineering, Faculty of engineering at Shoubra, Benha university, Egypt.Ahmed Awad Gomaa AwadDepartment of Architectural engineering, Faculty of engineering at Shoubra, Benha university, Egypt.Mokhtar Mohammed AhmedDepartment of Architectural engineering, Faculty of engineering at Shoubra, Benha university, Egypt.Journal Article20180818The development in functions of the shopping centers has refered to their transformation from being specialized in commercial activities only to various Activites such as: Entertainment, cultural, social and sports services. These activities have refered to confusion in general concept, types and gradations. Of this helps them to determine main components or zones functional elements that are supposed of each type of building<br />The development of a comprehensive classification of these types based on foundations and design indicators and according to international organizations standards such as: International Council of Shopping Center etc, And thus ،The research examined and analyzed the classification in some local models to verify the classification reached and then analyzes the current status of Egypt in the new cities. To a clear classification that helps in the design of contemporary shopping centers in the future. And then to conduct a survey on this classification for three categories representing the Egyptian society dealing with these shopping centers, the public and urban specialists and investors to take their views in the classification reached to make sure that it is compatible with the Egyptian reality.Assiut University, Faculty of EngineeringJES. Journal of Engineering Sciences1687-053047No 120190101SABIL BTWEEN LOSS OF FORM AND EXHAUSTION THE FUNCTION ARCHITECTURAL AND HISTORICAL STUDY FOR SABIL ALI BECK AL KABEER IN TANTA11413211708110.21608/jesaun.2019.117081ENDalia Shebl SaidDepartment of Architectural engineering, Faculty of engineering, Kafr El-Sheikh university, Egypt.Ahmed Salah AldibDepartment of Architectural engineering, Faculty of engineering, Kafr El-Sheikh university, Egypt.Journal Article20180805Sabil is one of the important social buildings within the Islamic community، which the kings and princes throughout the ages have been keen to establish for more than six centuries throughout the rule of the Mamluks and Ottomans. The origin and existence of Asbala was associated with the number of population and their geographic distribution، focusing on populated areas such as markets and commercial neighborhoods. For playing an important role in watering pedestrians and animals in the streets and thus became a distinctive feature of the Islamic city.<br />The study aims to study the emergence and development of the appearance of Sabil in Egypt and the most important styles and patterns that emerged during the Mamluk and Ottoman periods and the most important components of Sabil as well as the role of Sabil within the urban fabric as well as examples of the architectural and urban transgressions that took place on the historical Asbla that were a social and urban function within the society and the disappearance of its role In an attempt to arrive at a clear strategy for maintaining and re-operating them within the framework of appropriate intervention methods through three consecutive stages.<br />The study examines Sabil Ali Beck Al Kabeer in tanta and its historical background، stages and steps of intervention، including the museum garden within it، monitoring the current situation of the avenue and the violations that occurred to him، and then try to develop a plan to re-operate it as an essential step to start the introduction of interventions and appropriate treatment and Make it part of the cultural and cultural heritage of the city.<br />The study concludes with the historical Asbla of Egypt and the most important violations، and the existence of random planning and organizational during the deconstruction of Sabil Ali Beck as well as the lack of clarity of the operational plan of the avenue and reuse، which calls for a strategy for the conservation and reconstruction of such buildings.