ZHU Zhen-de, XING Fu-dong, LIU Han-long, et al. Experimental research on expansive deformation of tertiary red sandstone in Nanjing[J]. 2004, 25(7期 刊出日).
ZHU Zhen-de, XING Fu-dong, LIU Han-long, et al. Experimental research on expansive deformation of tertiary red sandstone in Nanjing[J]. 2004, 25(7期 刊出日).DOI:
For the reason of special expansive characteristics of red sandstone
a series of experimental procedure performed in rock mechanics rigidity servo testing system (RMTS815.02) and rock oedometer
developed to determine the swelling behaviour of red sandstone taken from a foundation pit of Hongshanyao Project (HSYP) in Nanjing
is described. Based on the experimental data
an empirical formula of expansive strain with water content was expressed as . It is clear that the curve of expansive strain-water content is a logarithm. In the meantime
the relation of expansive strain with time was studied and the importance of expansive stabilization time was illuminated. The experimental results indicated that the water content has a tremendous effect on peak expansive and steady expansive deformation of swelling red sandstone; and it must be a momentous guide in the engineering design and construction.