%0 Journal Article
%T Assessment of change in acoustic wave velocity of compacted expansive soil through experiments
%J Scientia Iranica
%I Sharif University of Technology
%Z 1026-3098
%A Wei, Bing-xu
%A Huang, Zhen
%D 2017
%\ 02/01/2017
%V 24
%N 1
%P 136-142
%! Assessment of change in acoustic wave velocity of compacted expansive soil through experiments
%K Compacted expansive soil
%K P-wave velocity
%K Drying-wetting cycles
%K Cyclic amplitude
%K Constant amplitude
%R 10.24200/sci.2017.2383
%X In the present study, the non-metal acoustic waves monitor, TH204 has been used to determine P-wave velocity of compacted expansive soil under the condition of drying-wetting cycles with constant amplitude, to explore the change in P-wave velocity of compacted expansive soil with the cyclic number, cyclic amplitude and control moisture content. The results show that the P-wave velocity of the compacted expansive soil follows a non-linear decrease with increasing the cyclic number and tends to be stable. Also, under the conditions of equivalent control moisture rate and cyclic number, the cyclic amplitude has a great effect on the P-wave velocity of expansive soil. Thus, with increase in the cyclic amplitude, the P-wave velocity is decreased. Secondly, under the same cyclic number, the P-wave velocity changes with the control moisture rate monotonously. Further, the study shows that the peak values of P-wave velocity appear near the optimum moisture rate, and the peak value position remains unaltered with change in cyclic amplitude
%U http://scientiairanica.sharif.edu/article_2383_bbec2c5fd588d44d2474d9d392f17002.pdf