A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of mineral admixtures and carbonation on microstructure and chloride diffusion of cementitious materials
It is important for service life prediction of concrete structures to estimate mass transport accurately. Mass transport in concrete depends on the microstructure of concrete. The microstructure of concrete is affected by addition of mineral admixtures, such as ground granulated blast-furnace slag and fly ash, and effect of carbonation. Moreover, it is well known that the ion transport is concentration dependent. However, the effect of mineral admixtures and carbonation on microstructure characteristics and concentration dependence of chloride diffusion coefficient have not been clarified sufficiently. In this study, microstructure characteristics of hardened cementitious matenals were estimated by chloride diffusion cell test. Chloride diffusion coefficient, porosity and the amount of hydration products of mortars were measured. Microstructure characteristics, such as tortuosity and constinctivity, of non-carbonated or carbonated mortars using mineral admixtures were calculated. As a result, tortuosity and constrictivity were widely changed by addition of mineral admixture and effect of carbonation.
Effect of mineral admixtures and carbonation on microstructure and chloride diffusion of cementitious materials
It is important for service life prediction of concrete structures to estimate mass transport accurately. Mass transport in concrete depends on the microstructure of concrete. The microstructure of concrete is affected by addition of mineral admixtures, such as ground granulated blast-furnace slag and fly ash, and effect of carbonation. Moreover, it is well known that the ion transport is concentration dependent. However, the effect of mineral admixtures and carbonation on microstructure characteristics and concentration dependence of chloride diffusion coefficient have not been clarified sufficiently. In this study, microstructure characteristics of hardened cementitious matenals were estimated by chloride diffusion cell test. Chloride diffusion coefficient, porosity and the amount of hydration products of mortars were measured. Microstructure characteristics, such as tortuosity and constinctivity, of non-carbonated or carbonated mortars using mineral admixtures were calculated. As a result, tortuosity and constrictivity were widely changed by addition of mineral admixture and effect of carbonation.
Effect of mineral admixtures and carbonation on microstructure and chloride diffusion of cementitious materials
Der Einfluss von mineralischen Beimischungen und Carbonisierung auf die Mikrostruktur und die Chloriddiffusion von Zementwerkstoffen
Sasaki, K. (author) / Saeki, T. (author)
2009
7 Seiten, 13 Bilder, 1 Tabelle, 11 Quellen
Conference paper
English
High durability cementitious material with mineral admixtures and carbonation curing
| Tema Archive | 2006
Carbonation of Concrete Containing Mineral Admixtures
| Online Contents | 2003
Carbonation of Concrete Containing Mineral Admixtures
| British Library Online Contents | 2003
Effects of Mineral Admixtures on Carbonation and Chloride Ingress of Concrete
| British Library Conference Proceedings | 2012
Effects of Mineral Admixtures on Carbonation and Chloride Ingress of Concrete
| Trans Tech Publications | 2012