Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of fine aggregate replacement on the rheology, compressive strength and carbonation properties of fly ash and mortar
Recently, the amount of fly ash generated from electric power plants and other industries in Japan was about 6.4 million tones per year, and it is expected to increase to 12 million tones per year in 2010. Hence, there is a great need to investigate solutions on how to utilize fly ash more effectively. This study aims to clarify the effects of high level of replacement of fine aggregate by fly ash on the properties of concrete in the fresh state as well as in the hardened state, and investigate the limit of the replacement in view of the practical application of this type of concrete. Rheological properties, compressive strength and rate of carbonation of mortars of water to Portland cement ratio of 0.3, 0.4 and 0.5 in which the aggregate was replaced with fly ash at 25 and 50 percent levels were evaluated experimentally. It was found that the rheological constants increased with higher replacement level of fly ash and that, when water to Portland cement ratio was maintained the strength development and carbonation properties were improved.
Effects of fine aggregate replacement on the rheology, compressive strength and carbonation properties of fly ash and mortar
Recently, the amount of fly ash generated from electric power plants and other industries in Japan was about 6.4 million tones per year, and it is expected to increase to 12 million tones per year in 2010. Hence, there is a great need to investigate solutions on how to utilize fly ash more effectively. This study aims to clarify the effects of high level of replacement of fine aggregate by fly ash on the properties of concrete in the fresh state as well as in the hardened state, and investigate the limit of the replacement in view of the practical application of this type of concrete. Rheological properties, compressive strength and rate of carbonation of mortars of water to Portland cement ratio of 0.3, 0.4 and 0.5 in which the aggregate was replaced with fly ash at 25 and 50 percent levels were evaluated experimentally. It was found that the rheological constants increased with higher replacement level of fly ash and that, when water to Portland cement ratio was maintained the strength development and carbonation properties were improved.
Effects of fine aggregate replacement on the rheology, compressive strength and carbonation properties of fly ash and mortar
Hwang, K.R. (Autor:in) / Noguchi, T. (Autor:in) / Tomosawa, F. (Autor:in)
1998
10 Seiten, 14 Bilder, 3 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
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