Conferencia Internacional de Producción y Uso Sostenible del Cemento y Hormigón

Conferencia Internacional de Producción y Uso Sostenible del Cemento y Hormigón

Can sustainability of concrete construction be improved through a better understanding of field practices? Lessons from Haiti

Resumen [ES]

This work is the result of the first collaborative investigation between the National Laboratory for Building and Public Works in Haiti, the Ecole Polytechnique Fédérale de Lausanne and the Swiss Agency for Development and Cooperation on the construction practices with concrete. We have set up the first practical method combining material science to socio-economics to quantify and analyze the actual practices with concrete in the field. We have collected and analyzed real concrete samples randomly selected in ordinary environment in the urban area of Port-au-Prince and recorded qualitative data on the local concrete practices. The results of the first field study are promising for both cement and concrete research and sustainable development of the construction. Approximately 30% of the concretes combine good strength and remarkably low CO2 impact, indeed lower than concrete made in developed countries. This suggests that there is a tremendous potential to make robust and low CO2 concrete around the world in no standardized conditions. Besides this promising perspective, the analysis of actual concretes showed that the most common wrong practice was the excessive use of water in the concrete mix. Nevertheless, these concretes with extreme (w/c) ratio revealed new insights on the cement hydration mechanisms

Resumen [EN]

This work is the result of the first collaborative investigation between the National Laboratory for Building and Public Works in Haiti, the Ecole Polytechnique Fédérale de Lausanne and the Swiss Agency for Development and Cooperation on the construction practices with concrete. We have set up the first practical method combining material science to socio-economics to quantify and analyze the actual practices with concrete in the field. We have collected and analyzed real concrete samples randomly selected in ordinary environment in the urban area of Port-au-Prince and recorded qualitative data on the local concrete practices. The results of the first field study are promising for both cement and concrete research and sustainable development of the construction. Approximately 30% of the concretes combine good strength and remarkably low CO2 impact, indeed lower than concrete made in developed countries. This suggests that there is a tremendous potential to make robust and low CO2 concrete around the world in no standardized conditions. Besides this promising perspective, the analysis of actual concretes showed that the most common wrong practice was the excessive use of water in the concrete mix. Nevertheless, these concretes with extreme (w/c) ratio revealed new insights on the cement hydration mechanisms

Sobre el ponente

Elise Berodier

Elise Berodier

Flag of Cuba
Información Práctica
No definido
30 minutos
No definido
Autores
Judith Princeton
Loic Aron
Ivan Bartolini
Palabras clave
Cement hydration
Field practices
Microstructure
Sustainable concrete