Abstract
We made an attempt on open cutting the ares where a grouting test was provided, and made a search for the critical width of fissure for possible penetrating of grout. This paper also deals with the mechanisms of clogging media for grouting in comparison with 1-dimensional model tests of bricks with a crack. With these investigation and chemical analisys of grout tips from above site, it was shown that clogging of cracks was mainly affected by sedimention of grout.
