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51312-01732-Temperature Effect on Electrical Resistivity Measurement of Mature Saturated Concrete

Picture for Temperature Effect on Electrical Resistivity Measurement of Mature Saturated Concrete
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Product Number: 51312-01732-SG
ISBN: 01732 2012 CP
Author: Francisco Presuel-Moreno
Publication Date: 2012
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The electrical resistivity is an important parameter to characterize the durability of reinforced concrete. Concrete resistivity measurement has been applied for evaluating the corrosion rate of depassivated steel reinforcements and chloride penetration resistance. The resistivity of concrete is determined by a number of factors such as pore structure ion composition in pore water and degree of saturation. Concrete resistivity is temperature dependent and thus an increase in temperature leads to a decrease in resistivity. An investigation was carried out to study the influence of temperature on resistivity on mature saturated high performance concrete cylinders (fully hydrated). Measurements were performed on 10 cm diameter ×20cm concrete cylinders under temperatures ranging from 10°C to 45°C. Results show that temperature has different effects depending on the intrinsic concrete of resistivity. It is concluded that an accurate method can be developed to normalize concrete resistivity measured at different temperatures and converted to the resistivity at a reference temperature.
The electrical resistivity is an important parameter to characterize the durability of reinforced concrete. Concrete resistivity measurement has been applied for evaluating the corrosion rate of depassivated steel reinforcements and chloride penetration resistance. The resistivity of concrete is determined by a number of factors such as pore structure ion composition in pore water and degree of saturation. Concrete resistivity is temperature dependent and thus an increase in temperature leads to a decrease in resistivity. An investigation was carried out to study the influence of temperature on resistivity on mature saturated high performance concrete cylinders (fully hydrated). Measurements were performed on 10 cm diameter ×20cm concrete cylinders under temperatures ranging from 10°C to 45°C. Results show that temperature has different effects depending on the intrinsic concrete of resistivity. It is concluded that an accurate method can be developed to normalize concrete resistivity measured at different temperatures and converted to the resistivity at a reference temperature.
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