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Effect of recycled coarse aggregate on physical and mechanical properties of concrete / Mostafa Magdy Soliman Ashmawy ; Supervised Hanyahmed Abdalla , Ahmed Alaa Elansary

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Mostafa Magdy Soliman Ashmawy , 2020Description: 86 P. : charts , facsimiles ; 30cmOther title:
  • تأثير الركام الكبير المعاد تدويره على الخواص الفيزيائية والميكانيكية للخرسانة [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering Summary: Experimental program has been conducted in this research to examine physical and mechanical properties of recycled coarse aggregate (RCA) made from crashing of standard concrete cubes.The studied properties include specific gravity, water absorption, bulk density and crushing index. These properties are compared to their counterpartsobtained from natural coarse aggregate (NCA). The research also aims to study the effect of using the RCA on the mechanical properties of concrete. Different RCA ratios are used in constructing reinforced concrete columns to study their crack pattern, failure load, load- displacement relation, load-strain relation for longitudinal and transversal reinforcement, toughness and stiffness. The study includes four groups of specimens with 0%, 30%, 50% and 100% RCA replacement ratios. Six cubes, cylinders and small beams are constructed from each group to estimate the compressive, splitting and flexure strength at the age of 7 and 28 days. The research shows that RCA is a good alternative to NCA and the optimum RCA replacement ratio is 50%
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2020.Mo.E (Browse shelf(Opens below)) Not for loan 01010110080886000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2020.Mo.E (Browse shelf(Opens below)) 80886.CD Not for loan 01020110080886000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering

Experimental program has been conducted in this research to examine physical and mechanical properties of recycled coarse aggregate (RCA) made from crashing of standard concrete cubes.The studied properties include specific gravity, water absorption, bulk density and crushing index. These properties are compared to their counterpartsobtained from natural coarse aggregate (NCA). The research also aims to study the effect of using the RCA on the mechanical properties of concrete. Different RCA ratios are used in constructing reinforced concrete columns to study their crack pattern, failure load, load- displacement relation, load-strain relation for longitudinal and transversal reinforcement, toughness and stiffness. The study includes four groups of specimens with 0%, 30%, 50% and 100% RCA replacement ratios. Six cubes, cylinders and small beams are constructed from each group to estimate the compressive, splitting and flexure strength at the age of 7 and 28 days. The research shows that RCA is a good alternative to NCA and the optimum RCA replacement ratio is 50%

Issued also as CD

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