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العنوان
Eco-friendly translucent concrete for sustainable construction /
المؤلف
Rady, Nirmen Abd El-Aziz Mahmoud El-Sayed.
هيئة الاعداد
باحث / نرمين عبدالعزيز محمود
مشرف / أحمد محمد طهوية
مشرف / أحمد حسنين عبدالرحيم
مشرف / محمد أمين شريف
مناقش / أشرف محمد حنيجل
مناقش / محمد عطية عبدالرحمن
الموضوع
Structural Engineering. Building materials. Environmental engineering. Building - Environmental aspects.
تاريخ النشر
2021.
عدد الصفحات
142 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة المدنية والإنشائية
تاريخ الإجازة
1/4/2021
مكان الإجازة
جامعة المنصورة - كلية الهندسة - قسم الهندسة الانشائية
الفهرس
Only 14 pages are availabe for public view

from 142

from 142

Abstract

A decade ago, sustainable construction emerged as a viable goal that has been greatly fueled by advances in manufacturing technology and increased energy costs. Since a large amount of this energy is consumed by lighting, it was necessary to search for an alternative technology that relies more on natural lighting. Translucent concrete has become one of the energy conservation icons in architecture and civil engineering, and its development and expansion of its using areas have become a vital desired goal. Although translucent concrete is a widely used sustainable commercial material, it is still in its infancy stage, and there is an urgent need for a deeper understanding of its properties and performance in the technical-scientific field. This study aims to investigate the inclusion of plastic optical fiber (POF) in self-compacting concrete (SCC) and studies the effect of some variants on each, as the data presented here refer to specimens of 21 mixtures divided into six main groups that confirmed the good effect of POF on all translucent self-compacting concrete (TSCC) properties. Besides fresh concrete tests, bulk density, all-ages compressive strength, splitting tensile strength, flexural strength, bond strength, modulus of elasticity strength, and light transmittance as well as relations between light transmittance and mechanical properties were investigated on the TSCC hardened phase. Hence, the natural light transmittance performance was investigated at natural light conditions from 7 a.m. to 7 p.m. The artificial light transmittance performance was analyzed at voltage variation, light source variation, using a group of light-dependent resistors (LDRs) instead of single LDR and varying the distances from light source to specimen. It was also found that the performance of the artificial light transmittance of TSCC containing coarse aggregate was somewhat similar to its performance, which is free of that coarse aggregate. The experimental study showed that although the mechanical properties of TSCC increased with increasing POF volume ratios and diameters, the light transmittance significantly increased in direct quadratic relationships with increasing POF volume ratios. In this research, TSCC performs up to 21.35%, 24.7% of natural, artificial light transmittance near-cube face, and high mechanical properties such as compressive strength of 48 MPa at 28 days, respectively. Based on the research’s contribution to identifying new sustainable structural alternatives, it added special knowledge in this regard by merging a distinct type of concrete with translucent concrete to produce an ultra-high performance TSCC (UHP-TSCC) with a compressive strength of 135.30 MPa at 28 days. TSCC provides high light transmittance, and high mechanical properties enable it to be used in various sustainable civil and architectural applications.