P Creep and shrinkage of the concrete depend on the ambient humidity, the dimensions of the element and the composition of the concrete.
混凝土的蠕变和缩水取决于环境湿度，结构尺寸以及混凝土成分。
2
With the increase of relative humidity, both length and diameter of vessel element increased, as well as the frequency of rays.
随着空气相对湿度的增加，导管分子长度和直径均增大，射线频率减小。
3
The finite element simulation and the deduced theory show the different changes of the simulated depth of carbonization under different temperature and relative humidity.