Cost and CO₂ Emission Reduction Effects of a Partially Encased Composite Precast Concrete Beam

Table 10

The quantity of CO₂ emission of different beams.

Item	PPECB	SCCB			RCB
		SCCB1	SCCB2	SCCB3	RCB1	RCB2
Concrete	84.08	154.28	165.30	165.30	126.73	137.75
I-steel-Q235	144.67	—	—	—	—	—
I-steel-Q345	—	320.37	327.48	326.30	—	—
Rebar	63.17	91.51	91.81	104.03	221.94	242.28
Bolts	—	5.41	5.41	5.41	—	—
Total	291.93	571.57	590.00	601.04	348.67	380.03

Note. The bolts are classified into I-steel during statistics.