Table 7 Direct shear test results of unstabilized and stabilized soil specimens of different PSA content.

From: Strength and microstructural characteristics of sand soils stabilized with paper sludge Ash-Based geopolymer

Mix Number

Normal Stress (kPa)

Strength Parameters

100

200

400

C (kPa)

\(\:\varphi\:\) (°)

Mix 0

Shear Strength

(kPa)

67.3

136.2

276.6

0

35

Mix 1

110.2

197.1

390.1

16.9

43.0

Mix 2

107.3

195.0

351.5

19.6

41.2

Mix 3

112.1

198.1

350.9

26.0

40.7

Mix 4

117.6

213.6

437.5

5.7

47.0

Mix 5

95.1

180.4

350.9

9.9

40.4

Mix 6

90.8

188.0

331.7

19.0

38.3

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