Estimation of Sand Volume at Earth Filling Work with Geotextiles

Abstract

In earth filling work on very poor clayey ground utilizing geotextiles, rational estimation of sand volume needed for sand layer construction is required. A new estimation method was proposed by authors where the distribution model of sand layer thickness is expressed by logarismic normal distribution. First the estimation procedures on the actual work using new method are described. Then a detailed comparison of the construction results and the estimation results was made. The applicability of proposed method was investigated and it became clear that the new estimation method was useful.