Electrical resistivity and conductivity

Composite number

Engineering

Metallurgy

Materials science

Mineral

Thermal conductivity

Reinforced concrete

Thermoelectric effect

Carbon fibers

Seebeck coefficient

Silica fume

Thermodynamics

Physics

Portland cement

Cement

Fly ash

Composite material

Fiber

Electrical engineering

New Carbon Materials

Carbon fiber reinforced concrete can be used to sense temperature owing to the Seebeck effect caused by the p-type conductivity of short carbon fibers. Both the temperature sensing ability of the carbon fiber reinforced lightweight concrete and the influence of mineral admixtures on the Seebeck effect were investigated by measuring the thermo electric power of six Portland cement-based concretes with or without carbon fibers or mineral admixtures (fly ash, silica fume). It was found that the carbon fiber reinforced lightweight concretes had a Seebeck effect similar to the carbon fiber reinforced normal concrete, but their Seebeck coefficients were decreased by mineral admixtures. Carbon fiber reinforced lightweight concrete with mineral admixtures can be used as a thermal sensor in buildings.

Thermoelectric behavior of carbon fiber reinforced lightweight concrete with mineral admixtures