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IMPROVING SHEAR STRENGTH OF THICK HOLLOW CORE SLABS BY USING LIGHTWEIGHT HIGH STRENGTH CONCRETE PRODUCED FROM RECYCLED CRUSHED CLAY BRICK AND IRON POWDER WASTE

Authors: Yousif Nassif Sabr --- Husain Khalaf Jarallah --- Hassan Issa AbdulKareem
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2019 Volume: 23 Issue: 6 Pages: 128-146
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This investigation provides an experimental study about structural behavior of reinforced hollow core slab (HCS) by using recycled lightweight material. Six hollow core slab specimens were casted with dimensions 1200mm length, 450mm width and different thickness (200mm, 250mm and 325mm). The shear reinforcement was used for each thickness to resist the shear failure that occur in thick hollow core slab. The Recycled materials were crushed clay brick and iron powder waste. The crushed clay brick was used as a coarse aggregate instead of gravel to a get lightweight concrete. The hollow core slab specimens were tested with age 28-day. The test was done by applied two line load up to failure. The experimental results showed an increase in the shear strength up to 50% and decrease in the maximum deflection up to 50% with increasing thickness specimen. Also the experimental results showed an increase in the shear strength up to 50% and increase in the maximum deflection up to 50% with using shear reinforcement compare with hollow core slab specimens without shear reinforcement. From the experimental results of this investigation can be avoid the shear failure and change the mode of failure from the shear to flexural failure.


Article
Protective the carbon steel from corrosion by coating (Zn-Ni) alloy
الطلاء بسبيكة اساس (Zn-Ni) لحماية الفولاذ الكربوني من التاكل

Author: Jaleel K. Ahmed جليل كريم احمد
Journal: Iraqi journal of mechanical and material engineering المجلة العراقية للهندسة الميكانيكية وهندسة المواد ISSN: 20761819 Year: 2011 Volume: 11 Issue: 1 Pages: 182-195
Publisher: Babylon University جامعة بابل

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Abstract

Abstract:In this research an attempt to introduce an additional improvement on the properties of (Zn-Ni) electroplated layer. In this work electrodeposited layer of different thickness of (Zn-Ni) from an alkaline solution is performed on samples of low carbon steel. X-ray fluorescent (XRF) used to determine the chemical composition of (Zn-Ni) deposited layer as well as x-ray diffraction (XRD) technique is used to determine the phases of the electrodeposits layer.

) Zn-Ni( ذلاوفلا نم جذامن ىلع ًايئابرهك مادختسإ مت دقو واطئ الكاربون من محلول طلاء قاعدي التركيب وبسمك طلاء مختلف ،لمعرفة نسب مكونات طبقات الطلاء من الخارصين (XRF) تقنية فلورة الأشعة السينيةللتحليل الكيميائي لمكونات (XRD) والنيكل ، كما تم استخدام تقنية حيود الاشعة السينيةطبقات الطلاء

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