Table 10 Carbon emission factors of main building materials/common energy.

Portland cement (P.O42.5)

kg CO_2eq/t

920

A study on embodied environmental profile during the lifecycle of cement⁴⁵

Lime

747

Carbon emission calculation standard for buildings⁴⁶

Gravel

2.18

Recycled brick

1.09

Recycled cement concrete

1.09

Diesel oil

2270

2006 IPCC Guidelines for National Greenhouse Gas Inventories⁴⁷

Electric power (North China)

kg CO_2eq/(kw h)

1.246

Provincial greenhouse gas inventory guidelines⁴⁸