Discovery Research Portal (University of Dundee) · 2002 · 24 citations · 0 references
ArchitectureArchitectural EngineeringBuilding ScienceBuilding MaterialsBuilt EnvironmentThermal ComfortBuilding PerformanceBuilding Thermal PerformanceConcrete ConstructionHeat Transfer In BuildingsThermal PerformanceThermal Performance AssessmentBuilding Envelope Thermal MassBuilding Envelope Thermal PropertiesBuilding Thermal DesignBuilding Thermal DynamicsConcrete Thermal PropertiesThermal Performance ValidationThermal Properties Of Construction Materials
Low density (800 to 1400 kg/m3), high workability (flowing and selfcompacting) and excellent thermal insulating properties (<0.5 W/mK) make foamed concrete attractive for many construction applications. This paper describes a laboratory study carried out at the University of Dundee looking into the development of thermally insulating foamed concrete suitable for trench fill foundations and ground-supported slabs for low-rise dwellings. In order to achieve this, a fine fly ash (7.5% ret 45u.m) was used to directly replace 30% by wt Portland cement and a coarse fly ash (26.0% ret 45um) to replace 50 or 100% by wt fine aggregate. The key thermal, engineering and permeation properties of a series of mixes are reported, which show that, indeed, foamed concrete offers builders many advantages over current construction methods and materials for this application.