Shrinkage Mechanism of Laterite Modified by Lime and Metakaolin

Table 3

Testing plan.

No.	Test name	Sample category	Initial state of sample
1	Shrinkage test	La; LaL; LaLM	e0 = 0.89; ω = 32%; Ring knife sample; (φ 61.8 mm × 20 mm)
2	Unconfined compression strength and suction test	Same as above	e0 = 0.89; ω = 32%; Cylinder sample; (φ 50 mm × 50 mm)
3	Direct shear test	Same as above	e0 = 0.89; ω = 32%; Ring knife sample; (φ 61.8 mm × 20 mm)
4	Pore analysis test	LaL; LaLM	e0 = 0.89; ω1 = 0%, 28%; Side length of the cube≈1.5 cm

Notice: e₀ is the porosity ratio after the sample was pressed, ω is the original water content after the sample was pressed, and ω₁ is the water content of the sample during dehydration.