Possibility of using different types of Egyptian serpentine as fine and coarse aggregates for concrete production (original) (raw)

2020

Abstract

This work is the first attempt to study the possibility of incorporating three different types of Egyptian serpentine aggregates (antigorite, lizardite and chrysotile) with different serpentinization grades as fine and coarse aggregates for normal concrete production. The results of physical and mechanical tests for each type of aggregate were compared to the others. In addition, the effect of serpentinization grade on their mineralogical composition, physico-mechanical and morphological properties of was evaluated and compared. The results were analyzed by using sophisticated tools such as X-ray diffraction, thermogravimetry/ differential thermogravimetry and scanning electron microscopy. The results revealed that the physical, mechanical and microstructural properties of serpentine-based concretes were negatively influenced by the progress of serpentinization and deformation processes. The antigorite aggregate showed the lowest serpentinization grade compared to the others (i.e. l...

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