Strength and Young's modulus change in concrete due to long-term drying and heating up to 90 °C

Abstract Understanding changes in the strength and Young's modulus of concrete under long-term drying or heating less than or equal to 90 °C is crucial for managing the aging of industrial buildings. We collected experimental data on changes in the physical properties of concrete components, aggregates, cement pastes, and concretes containing different aggregates and mortar under different heating and drying conditions. The change in compressive strength of concretes under various drying or heating conditions was explained by the behavior of the cement paste matrix and damage accumulation caused by differences in volume changes between the aggregate and mortar. In contrast, the variation in the Young's modulus of concrete caused by the drying or heating conditions was mainly explained by the increase in the number of voids due to internal cracking in the concrete.

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