A method for determining the thickness of the side wall treatment layer in the penetration test of coarse-grained soil
A determination method, a technique for coarse-grained soils, applied in permeability/surface area analysis, suspension and porous material analysis, instruments, etc., which can solve the problems of small test data, normal pores of samples that will contaminate, and large test data.
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[0049] A method for determining the thickness of a side wall treatment layer in a coarse-grained soil permeability test, the steps of which are as follows:
[0050] (1) Particle size composition of coarse-grained soil
[0051] From the particle sieving test, the percentage M of the particle mass of the jth particle size group of the coarse-grained soil used for the coarse-grained soil penetration test in the total mass of the dry soil is obtained j , j=1,2,3...J, j is the sequence number of the sieved particle size group, and J is the number of sieved particle size groups;
[0052] Calculate the median particle size d of the jth particle size group j :
[0053]
[0054] In the formula, d j,max is the upper limit particle size of the jth particle size group; d j,min is the lower limit particle size of the jth particle size group;
[0055](2) Determination of the particle density of each particle size group
[0056] Measure the particle density ρ of the jth particle siz...
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