Question

मास ऑफ सोइल रिमूव फ्रॉम कोर कटर हैव इन इंटरनल वॉल्यूम ओपन लेटर इज 20 ग्राम एंड डबल बेड शीट ऑफ़ साइल विल बी​

Answer 1

Answer:

Dry Density of Soil by Core Cutter Method

Cylindrical core cutters of 130mm long and 100mm diameter are used for testing the in-situ compaction of cohesive and clay soils placed as fill. By using core cutter method, bulk density of soil can be quickly calculated and by determining the moisture content of the soil the dry density of the fill can be calculated and hence the voids percentage. A high percentage of voids indicates poor compaction of soil.

A cylindrical core cutter is a seamless steel tube. For determination of the dry density of the soil, the cutter is pressed into the soil mass so that it is filled with the soil without disturbing the core contents. The cutter filled with the soil is lifted up. The mass of the soil in the cutter is determined. The dry density is obtained as

Where,

M= mass of the wet soil in the cutter

V= internal volume of the cutter

w= water content.

Equipment for Core Cutter Method

Cylindrical core cutter, 100mm internal diameter and 130mm long

Steel rammer, mass 9 kg, overall length with the foot and staff about 900mm.

Steel dolley, 25mm high and 100 mm internal diameter

Weighing balance, accuracy 1g.

Palette knife

Straight edge, steel rule etc