Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Power Plant Ashes and Their Utilization. Part 4. Use as Constituent of Mortar
In recent years, growing attention has been given to the utilization of power plant ash also in Finland. The ash is separated from combustion gases by filtering. Its chemical composition and physical properties are dependent on the type of fuel and the equipment used in the power plant. On the basis of the literature the use of coal and lignite fly ash in grouts and also in masonry mortars and plasters is clarified. The Finnish fly ash seems to be suited for use in grouts and mortars due to its chemical and physical properties as well. The fly ash particles are small, light and spherical in shape, consequently, they affect the penetration capacity of grout as well as its consistency and separation. The use of fly ash as a binding agent is successful due to its pozzolanic activity. The latent hydraulic characteristics of ash can be made active by using cement and lime. The fly ash has also selfhardening properties. To avoid the negative effects attention shall be given to the quality of ash. The most important are the loss of ignition, fineness and oxide quantities. Fly ash can be used for grouts and mortars partially or independently as a binding agent or as a filler. The fly ash used as a binding agent can replace expensive cement or lime. Advantage from the use of fly ash as a filler can be considered to be mainly the improved properties of grout or mortar. The practical applications of fly ash can vary from the use of grouts and fills for large cavities to fine masonry mortars and plasters. (ERA citation 07:013656)
Power Plant Ashes and Their Utilization. Part 4. Use as Constituent of Mortar
In recent years, growing attention has been given to the utilization of power plant ash also in Finland. The ash is separated from combustion gases by filtering. Its chemical composition and physical properties are dependent on the type of fuel and the equipment used in the power plant. On the basis of the literature the use of coal and lignite fly ash in grouts and also in masonry mortars and plasters is clarified. The Finnish fly ash seems to be suited for use in grouts and mortars due to its chemical and physical properties as well. The fly ash particles are small, light and spherical in shape, consequently, they affect the penetration capacity of grout as well as its consistency and separation. The use of fly ash as a binding agent is successful due to its pozzolanic activity. The latent hydraulic characteristics of ash can be made active by using cement and lime. The fly ash has also selfhardening properties. To avoid the negative effects attention shall be given to the quality of ash. The most important are the loss of ignition, fineness and oxide quantities. Fly ash can be used for grouts and mortars partially or independently as a binding agent or as a filler. The fly ash used as a binding agent can replace expensive cement or lime. Advantage from the use of fly ash as a filler can be considered to be mainly the improved properties of grout or mortar. The practical applications of fly ash can vary from the use of grouts and fills for large cavities to fine masonry mortars and plasters. (ERA citation 07:013656)
Power Plant Ashes and Their Utilization. Part 4. Use as Constituent of Mortar
A. Vanhanen (Autor:in)
1980
58 pages
Report
Keine Angabe
Englisch
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