Effect of Wetting and Drying Cycle on the Behavior of Teff Straw Ash-Stabilized Expansive Soil

Table 6

Comparisons between previous studies and the current study.

Soil properties	Bagasse ash [27, 29]	Calcined termite clay [27]	Enset ash [28]	Coffee husk ash [15, 30, 31]	Current study
CBR (%)	2.2–9.8	2.2–11.4	1.7–6.7	2.5–12	1.7–8.9
Plasticity index (%)	51.6–12.36	51.6–14.58	40–25	40–25	49–25
Maximum dry density (g) (cm)^3	1.56–1.17	1.56–1.27	1.18–1.13	1.58–2.20	1.27–1.17
Optimum moisture content OMC (%)	32.57–45.44	32.57–43.39	32.57–43.39	20–28	33–41