Category: Transient Plane Source
Keywords: building materials, concrete, density, Fly Ash Concretes, Fly Ash Mortars, Fly Ash Weight %, relative humidity, relative humidity (RH), RH, specific heat capacity, Thermal Conductivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method
Abstract: In this study, three series of high-volume fly ash (HVFA) mortars and concretes were studied using the transient plane source (TPS) technique. Each series of sample contained varying weight % of fly ash from 0 to 75%. The three sample sets were prepared by different laboratories and the results were compared. Thermal conductivity and specific heat capacity were measured, and the authors detailed their method of doing this. It was determined that the addition of fly ash to mortar and concrete mixes resulted in a decreased thermal conductivity, with was desirable. The decrease in thermal conductivity was explained to be because of the reduced density of fly ash as compared to mortar and concrete. Specific heat values remained relatively unchanged by the addition of fly ash.
Reference: Journal of Building Physics, 34, 3 (2011) 263-275