Study of structural mortars with the addition of silica fume from steel waste dosed by particle packing
DOI:
https://doi.org/10.46421/enarc.v8i00.2910Keywords:
Sílica fume, Steel waste, Structural mortars, High performance mortars, Cement composites with wasteAbstract
The insertion of silica fume, from steelworks residues, was evaluated on the mechanical, physical, durability and microstructure properties of a high-performance structural mortar. The mortars mixtures was elaborated through the packaging of particles. The following mortar properties were evaluated: compressive and flexural strength, water absorption by capillarity and by immersion, porosity, dynamic modulus of elasticity, electrical resistivity, thermogravimetry and scanning electron microscopy. The mechanical, physical and durability properties were more influenced at early ages by cement and at older ages by silica fume. Dosing by particle packing promoted greater matrix densification, increasing mechanical properties and extending durability, enabling the generation of high-performance mortars. It is concluded that silica fume influences the evolution of the analyzed properties and needs to be considered in the development of high performance mortar mixtures.
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