THE SIMULATED EXPERIMENT OF THE SMALL GRANITE BLOCKS UNDER THE COLD-DRY CONDITION

摘要

Free granite blocks with size of 50 x 50 x 50 mm cubic form which were uniaxial compressed and pre-treated as dry, water and Na_2SO_4 solution soaked, were experienced three freeze-thaw stages of different temperature ranges. The temperature cycles were given and carried out in an environmental cabinet while the temperatures on the samples surface and inside 10 mm and 25 mm depth were recorded respectively. Samples' weight and ultrasonic transfer velocity were also measured before and after experiment. The results showed that, to these small free samples, there was no apparent temperature difference between those on the surface and inside the blocks.