Optimization of Ionic Soil Stabilizer Dilution and Understanding the Mechanism in Red Clay Treatment

Table 5

The unconfined compressive strength of red clay with different ISS/H₂O ratios.

Sample	ISS/H2O volume ratio	Unconfined compressive strength (kPa)				Maximum dry density (g·cm^−3)	Optimum moisture content (%)
		7 d	14 d	28 d	60 d
I0	0	255	255	255	255	1.52	24.5
I1	1 : 50	332	340	353	357	1.603	24.3
I2	1 : 100	326	337	348	352	1.59	24.3
I3	1 : 150	322	330	341	345	1.582	24.4
I4	1 : 200	349	356	365	368	1.625	24.2
I5	1 : 250	320	328	342	345	1.58	24.4
I6	1 : 300	312	322	331	336	1.56	24.5
I7	1 : 350	325	334	345	348	1.596	24.4
I8	1 : 400	319	328	341	346	1.57	24.3