Efecto de la dosis de hidróxido de sodio en el desarrollo de la resistencia en morteros de cemento y cenizas...

Área de la Ciencia:

• Materials Science; Environmental Engineering; Civil Engineering

Sus antecedentes:

• Fly ash, a byproduct of combustion, poses environmental risks due to fine particulate matter.; Effective containment strategies for fly ash are crucial for mitigating terrestrial and atmospheric pollution.; Alkali-activated concrete offers a potential solution for immobilizing fly ash.

Objetivo del estudio:

• To investigate the use of alkali activators in producing fly ash-based concrete.; To determine the optimal concentrations of sodium hydroxide and fly ash for concrete strength.; To evaluate the influence of amorphous silica and alumina phases on concrete performance.

Principales métodos:

• Mixing fly ash with varying concentrations of sodium hydroxide (alkali activator).; Utilizing Scanning Electron Microscopy (SEM) for microstructural analysis.; Conducting laboratory tests and employing Artificial Neural Networks (ANN) for strength prediction.

Principales resultados:

• Sodium hydroxide at 5% and 6% optimized concrete strength at 3 and 28 days, respectively.; 10% fly ash content maximized concrete strength; 20-30% improved cement strength compared to control.; ANN models accurately predicted concrete strength with a 10% error, aiding property determination.

Conclusiones:

• Alkali activation effectively contains fly ash particles within concrete structures.; Optimized sodium hydroxide and fly ash content significantly enhance concrete mechanical properties.; The integration of ANN with laboratory tests provides a robust method for understanding concrete strength development.