Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Engineers, about fifty years ago, stumbled upon the problem of the bonding between cement paste and aggregates, now known as the interfacial transition zone, which, to date, is regarded as the strength determining weak link in the structure of ordinary concrete. The interfacial transition zone is part of the hydrated cement paste. Its microstructural characteristics within a plain Portland cement concrete are a high porosity, long ettringite needles and a high amount of relatively large calcium hydroxide crystals. From these characteristics it is considered to be the preferred path for the propagation of cracks in concrete. Furthermore, the high porosity has an important influence on the transport properties of concrete, and as a consequence, on durability.
Engineers, about fifty years ago, stumbled upon the problem of the bonding between cement paste and aggregates, now known as the interfacial transition zone, which, to date, is regarded as the strength determining weak link in the structure of ordinary concrete. The interfacial transition zone is part of the hydrated cement paste. Its microstructural characteristics within a plain Portland cement concrete are a high porosity, long ettringite needles and a high amount of relatively large calcium hydroxide crystals. From these characteristics it is considered to be the preferred path for the propagation of cracks in concrete. Furthermore, the high porosity has an important influence on the transport properties of concrete, and as a consequence, on durability.
Syneresis in Cement Paste Systems
M. R. de Rooij (Autor:in)
2000
100 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Construction Materials, Components, & Equipment , Cements , Concrete , Crack-propagation , Aggregates , Transport properties , Durability , Tensile strength , Admixtures , Crystals , Porosity , Microstructures , Theses , Foreign technology , Cement paste
Introduction of Syneresis in Cement Paste
| British Library Conference Proceedings | 1998
Syneresis in cement pase systems
| TIBKAT | 2000
Active thin sections to study syneresis
| Tema Archiv | 1999
Active thin sections to study syneresis
| British Library Online Contents | 1999
Active thin sections to study syneresis
| British Library Conference Proceedings | 1999