الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The production of environmentally friendly products, recycling waste, and keeping our environment clean have been in consideration for years. This could be achieved through recycling and decreasing the usage of fossil fuel products. Cement is one of the most consumed products on earth and the production of carbon dioxide emissions is one of the negative impacts of this industry. from this point, the usage of cement replacement materials can save the environment by the reduction of these emissions. Vitrified clay has been used for more than 1000 years and this industry produces landfilling waste. Vitrified clay contains metakaolin which is a pozzolanic material and can be used as a cement replacement. This study investigates the effect of using recycled vitrified clay (RVC) as a cement replacement material. This study is composed of two phases. Phase one focused on examining the RVC, fine, and coarse aggregate. The RVC was examined through X-ray Fluorescence (XRF), Laser scattering particle size distribution, and specific gravity. The fine and coarse aggregate were examined by conducting sieve analysis, specific gravity, and volumetric gravity. Phase two included tests on the concrete itself, whether fresh properties through slump test or hardened properties through compressive, flexural, abrasion, Scanning electron microscope, and X-ray diffraction (XRD) tests. The conclusions of this study were a guide for the effective usage of RVC as a cement replacement in the production of concrete and the optimum dosage for RVC depending on the usage required.