Gihan Garas

Cairo University, Civil Engineering - National Research Center, Associate Researcg Professor

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-Research Professor of Construction and Project Management at the National Research Centre/ Cairo/Egypt, with over 12 years’ experience in Waste Management Projects aiming to Re-use different Construction and Agricultural wastes in Sustainable Building -Teaching Experience at the Project and Construction Engineering Management programs to both undergraduate and postgraduate students/ British University in Egypt and others.-Distinguished record of publication in academic journals all over the world with high international impact. -Editor and Reviewer of Elsevier Waste Management Journal and others

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Noel B. Salazar

KU Leuven

PROFESSOR Sr Ts DR ZULHABRI ISMAIL

Universiti Teknologi Mara

David Seamon

Kansas State University

Simon Springer

The University of Newcastle

Djwantoro Hardjito

Petra Christian University

Kâmil VARINCA

Adıyaman University

Emmanuel Itodo Daniel

University of Wolverhampton

Nicola Lupo

LUISS Guido Carli

Mu Hardi

Riau University

Luis Alarcon

Pontificia Universidad Catolica de Chile

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Papers by Gihan Garas

Application of nano waste particles in concrete for sustainable construction: a comparative study

International Journal of Sustainable Engineering, 2021

ABSTRACT Nano particles contribute as a partial substitute in the production of eco-friendly buil... more ABSTRACT Nano particles contribute as a partial substitute in the production of eco-friendly building materials. This research presents a quantitative assessment of the sustainability effect of partially replacing cement in the green concrete mix with two types of nano-waste particles. The assessment is achieved using two weighing criteria developed by a Sustainable Decision Support System (SDSS) model. This assesses the alternatives using scoring systems based on both the Life Cycle Assessment (LCA) technique and Multi-Criteria decision analysis method. Ten sustainable aspects comprising four sustainability features: environmental, social, economic, and technological are incorporated within the model. The study investigates the partial substitution of cement by carbon nano tubes (CNT) and rice husk ash (RHA) in the concrete mix as compared to the control mix. The concrete mix with RHA showed the best sustainability results for all factors. This was attributed to the negligible RHA’s life cycle indexes as an agricultural residue of a natural material. Substituting 5% of the cement content in the mix by RHA partially contributed to minimising the carbon emissions and energy consumed during the cement manufacturing phase. CNT is expensive and its production consumes high amount of energy thus contributed negatively to the final evaluation result although its substitution proportion was minimal.

Re-Use of Granite Sludge in Producing Green Concrete

The industry of dimensional granite stone has contributed to the development of major environment... more The industry of dimensional granite stone has contributed to the development of major environmental problems due to waste generation at different stages of mining and processing operations. Granite waste generation continues from mining process to finished product and contributes about 60-80 % of the worked masses of the mineral mined. Depending on the type of process involved, the sludge generated is estimated over 30% of the volume of the sawn block. To solve the problem of these wastes generated by the granite production industry, several technical solutions consider the incorporation of granite sludge in other industrial activities as a by-product. This paper presents an experimental testing on the compressive strength of the green concrete mixes produced by replacing sand and cement by natural stone sludge. The concrete compressive strength is presented and the technical viability of this new construction material is illustrated. Substitution of 10% sand by the granite waste pr...

Gihan Garas

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