Thermal properties of lightweight concrete gelled with starch

Thermal conductivity  was measured using the transient method with the ISOMET 2114 device. For this purpose, cubic samples measuring 100 × 100 × 100 mm were prepared. These samples were then cut into two parts, each approximately 45 × 10 × 10 mm, and dried at 70°C until a constant mass was reached. Measurements were taken using a surface probe. The method is based on analyzing temperature changes in the tested sample caused by heat pulses. Heat is transferred via an electric resistor, which is part of the probe and is in direct contact with the sample.Assuming heat propagates in an infinite medium, thermal conductivity and heat capacity are determined from cyclic temperature readings over time. The specimen surfaces intended for testing were checked for flatness and parallelism to ensure proper probe contact. For each material, three samples were tested. Two measurements were taken on the cut surface of each sample, resulting in a total of six measurements. All tests were conducted on samples dried to a constant mass.
The data are provided in an .xlsx file and in a corresponding .csv file. A detailed description of the data is included in the respective files.