Low permeability concrete for prefabricated spring piles built in areas of splashes and tides using multiwall carbon nanotubes

Nieto M.; Galán M.; Rodríguez J.; Hinostroza A. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2020) · DOI: 10.18687/laccei2020.1.1.225

Resumen

Due to the importance of the maritime structures, it is required that the concrete with which they are manufactured guarantees their impermeability against the waters of the sea, being the piles of the docks those that suffer different anomalies when being in direct contact with the sulfates and chlorides, that progressively degrade it mainly causing its cracking. Carbon Nanotubes (NTC) have a large specific surface that affects the cement matrix by modifying hydrated calcium silicates, producing greater cohesion and consequently increasing the compactness of concrete. The present work seeks to reduce the permeability of the concrete of the prefabricated piles of the springs located in areas of splashes and tides, studying for it different physical and mechanical properties and economic viability of concrete with NTC; The results indicate that settlement decreases, the compressive, tensile and flexural strengths increase, the water penetration depth decreases and the cost per m3 is higher.

Instituciones: Universidad Peruana de Ciencias Aplicadas