Study on Restoration Materials for Historical Silty Earthen Sites Based on Lime and Starch Ether

Table 6

Freeze-thaw cycles test results of original site soil and modified soil.

Indicators	Sample	Number of freeze-thaw cycles
		10	20	30
Mass variation ratio (%)	Site soil	−0.12	−0.13	−0.15
	Modified soil	−0.13	−0.15	−0.18
Volume variation ratio (%)	Site soil	−0.62	−0.78	−3.58
	Modified soil	−0.76	−0.88	−1.67