الفهرس 
Chapter One IntroductionOnly 14 pages are availabe for public view
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Abstract
This study focused on a new self-compacting concrete produced from recycled construction materials. The potential for usage coarse recycled aggregate obtained from crushed concrete for making of self-compacting concrete was studied , additionally emphasizing its ecological value. On the other hand the issue of the waste disposal sites created by the demolition of old structures is solved. In the process of mixing, equal consistence of all concrete mixtures was achieved. The obtained results indicate that the properties of this concrete have only a slight difference, than the self compacting concrete with natural aggregate can successfully be used for making of self-compacting concrete.
In this study, we used 42 mixes divided into 2 phases. The materials used in this research were cement, sand, natural aggregate, recycled aggregate, water, silica fume and admixtures. The variables in this study were (0, 25, 50, 75,100) % recycled aggregate a replacement from the natural aggregate, silica fume with (10&12) % addition to cement content, and cement content from 350 kg/m3 to 450 kg/m3.
For each mixing, we implemented the fresh concrete tests included the slump flow , T50, J-ring, V-Funnel, V-Funnel T50, and GTM screen stability. In addition, the hardened concrete tests included the compressive strength at the ages of 7, and 28 days and the tensile strength at the age of 28 days.