Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance of lightweight aggregate concrete containing slag after 25 years in a harsh marine environment
This paper reports the results of a study on concretes containing lightweight aggregate (LWA) retrieved from the tidal zone of a marine exposure site. In terms of chloride resistance, the LWA concrete performed equivalently to similar concretes of the same age produced with normal density aggregate that were retrieved from the same site 2 years earlier. The partial replacement of Portland cement with slag led to substantial reductions in chloride penetration and the chloride diffusion coefficient. However, at w/cm ≥ 0.50, the incorporation of slag resulted in increased surface deterioration (scaling) attributed to freezing and thawing. Concrete with LWA, silica fume and w/cm = 0.33, showed better-than-expected performance with regard to resistance to chloride-ion penetration and it is speculated that this may be partly attributed to "internal curing" provided by the LWA which reduces the impact of self desiccation. Further studies are needed to confirm this phenomenon.
Performance of lightweight aggregate concrete containing slag after 25 years in a harsh marine environment
This paper reports the results of a study on concretes containing lightweight aggregate (LWA) retrieved from the tidal zone of a marine exposure site. In terms of chloride resistance, the LWA concrete performed equivalently to similar concretes of the same age produced with normal density aggregate that were retrieved from the same site 2 years earlier. The partial replacement of Portland cement with slag led to substantial reductions in chloride penetration and the chloride diffusion coefficient. However, at w/cm ≥ 0.50, the incorporation of slag resulted in increased surface deterioration (scaling) attributed to freezing and thawing. Concrete with LWA, silica fume and w/cm = 0.33, showed better-than-expected performance with regard to resistance to chloride-ion penetration and it is speculated that this may be partly attributed to "internal curing" provided by the LWA which reduces the impact of self desiccation. Further studies are needed to confirm this phenomenon.
Performance of lightweight aggregate concrete containing slag after 25 years in a harsh marine environment
Das Verhalten eines bewehrten Schlacke-enthaltenden Leichtbetones nach 25 Jahren in einer rauen Meeresumwelt
Thomas, Michael (Autor:in) / Bremner, Theodore (Autor:in)
Cement and Concrete Research ; 42 ; 358-364
2012
7 Seiten
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2012