Abstract
According to the result investigated on the pore structure of portland cement cured under high temperature at early ages, it can be induced that compared to the case cured under 20°C condition, the proportion of larger pores in the case cured under high temperature increased obviously. The compressive strength of the case cured under high temperature was found to have a reverse relationship with the amount of the pores whose radii are larger than 10 nm.
In addition, as the results indicated, with the increase on the compressive strength of hardened pastes cured under high temperature, the reverse relationship existing between the curing temperature and amount of pores whose radii are less than 10 nm become more apparent. Based on the above observation, the pores whose radii are less than 10 nm distribute more sparsely in the cured under high temperature than under 20°C condition.
