Comparison of Environmental Impacts of Two Alternative Stabilization Techniques on Expansive Soil Slopes

Table 7

Carbon dioxide emissions of the lime stabilization technique.

Construction process	CO2−eq (kg)	Proportion (%)
Lime production	326102.76	65.22
Transport of lime	2918.58	0.58
First mixing	3944.31	0.79
Transport of lime-soil	9626.99	1.93
Lime-soil paving	5225.51	1.05
Secondary mixing	1643.46	0.33
Mixing lime-soil compaction	1738.10	0.35
Expansive soil loading	5844.89	1.17
Transport of expansive soil	50541.71	10.11
Expansive soil paving	27433.95	5.49
Expansive soil compaction	9125.01	1.83
Nonexpansive soil loading	1948.30	0.39
Transport of nonexpansive soil	41694.00	8.34
Nonexpansive soil paving	9144.65	1.83
Nonexpansive soil compaction	3041.67	0.61
Total	499973.90	100