Article
Evaluation of Portland and Pozzolanic cement on the self-healing of mortars with calcium lactate and bacteria
Fecha
2020-10Registro en:
Construction and Building Materials, 2020, vol. 257, 119558
Autor
González, Álvaro
Parraguez, Araceli
Corvalán, Liliana
Correa, Néstor
Castro, Javier
Stuckrath, Claudia
González, Marcelo
Institución
Resumen
This article studies the effect of Portland and Pozzolanic cement on the crack-healing of mortars prepared with Bacillus pseudofirmus bacteria and calcium lactate as a nutrient. Mixtures were prepared with the same content of cement, water, sand, and Light Weight Aggregate. Results showed an inverse relationship between crack width and self-healed area, with most of the healing occurring between 0 and 21 days of sample conditioning. The healing on samples with calcium lactate only and calcium lactate + bacteria was significantly higher than in control samples. Results indicate that Portland cement better promotes the self-healing of cracks compared to Pozzolanic cement.