Page 64 - ICJ Jan 2023

TECHNICAL PAPER COLLECTOR’S EDITION

Soil-cement cubes were cured under wet burlap
for 21 days and then air dried inside the laboratory
for 30 days. The cubes were soaked in water for 48
hours before testing. The compressive strength
tests were carried out in a strain controlled
testing machine at a strain rate of 1.25 mm/min.
The strength obtained in this manner has been
designated as wet compressive strength.

Ordinary portland cement has been used for the
preparation of soil-cement cubes. The strength
of 1:3 (cement:sand) mortar cubes tested as per
Indian code IS:4031-1968, is as follows:

(i) 3 days strength : 15.13N/mm 2

(ii) 7 days strength: 22.30N/mm 2
Fig 3 Effect of sand content on strength for 5 percent
cement

Table 3: Expansion and weight loss of soil-cement cubes
Sr. Soil type Soil composition, Weight loss after 20 Expansion due to saturation,
no. percent by weight cycles, percent percent
Sand Silt Clay 5 percent 10 percent 5 percent 10 percent
cement cement cement cement
1. BC soil 35.7 28.3 36.0 63.50 30.20 2.90 1.05
BC soil +100 percent sand 67.9 14.1 18.0 21.30 5.50 0.49 0.17
BC soil + 200 percent sand 78.6 9.4 12.0 9.00 3.80 0.22 0.14
2. BG soil 48.8 22.4 28.8 21.30 5.80 1.10 0.55
BG soil + 100 percent sand 74.4 11.2 14.4 11.30 0.70 0.36 0.08
BG soil + 200 percent sand 82.9 7.5 9.6 3.50 0.60 0.12 0.03
3. SH soil 39.5 33.5 27.0 26.00 1.30 0.76 0.36
SH soil + 100 percent sand 69.8 16.7 13.5 1.60 0.40 0.18 0.10
4. SBC soil 38.9 32.6 28.5 29.90 16.50 0.85 0.41
SBC soil + 100 percent 69.5 16.3 14.2 8.20 1.30 0.24 0.08
sand
5. ML soil 40.7 13.3 46.0 4.15 2.27 0.22 0.16
ML soil + 100 percent 70.4 6.6 23.0 3.00 1.88 0.11 0.07
sand
ML soil + 200 percent 80.2 4.4 15.4 2.60 0.76 0.09 0.03
sand
6. MBC soil 39.1 18.2 42.7 4.69 3.72 0.53 0.39
MBC soil + 100 percent 69.6 9.1 21.3 3.19 1.67 0.04 0.03
sand
MBC soil + 200 percent 79.7 6.1 14.2 3.48 1.00 0.03 0.01
sand

The Indian Concrete Journal | November 2018 65