Mineralogy of binders & effects of free lime content & cement addition in mortars.

St Astier Natural Hydraulic Limes (NHL)

CO2 EMISSION OF VARIOUS BINDERS

Material - Energy Requirements Fuel (coal) Kg/Ton Thermie (Fr) per Ton * Kilowatts/hour Per ton
Cement 110 900 120
Hydrated CL 90% 84 650 50
NHL 2 with 75% CL 82 634 37
NHL2 with 60% CL 78 605 28
NHL3,5 70 550 25
NHL5 75 650 27

* 1 Thermie (Fr) = 4.1855 MJ or 0.03967 Therm

Material
CO2 per Kg/Tonne of Binder
Emission during burning Emission from
de-carbonation
Total emitted
during production
Re-absorbed Not Re-absorbed
Cement 403 416 819 NIL 819
Hydrated CL 90% 308 564 872 535 337
NHL 2 with 75% CL 300 528 828 445 383
NHL2 with 60% CL 286 430 716 350 366
NHL3,5 256 350 606 270 336
NHL5 275 360 635 220 415

CO2 EMISSION OF VARIOUS MORTARS

MORTARS 1 : 2 binder/sand ratio Weight of binders / kg per ton of mortar Total CO2 emission(not re-absorbed) kg per ton of mortar MORTARS 1 : 3 binder/sand ratio Weight of binders / kg per ton of mortar Total CO2 emission(not re-absorbed) kg per ton of mortar
Cement 250 205 Cement 182 149
Cement/CL 1:1:4 133/67 132 Cement/CL 1:1:6 95/47 94
NHL2 with75%CL 135 52 NHL2 with75%CL 96 37
St. AstierNHL 2 with60%CL 143 52 St. Astier NHL 2 with60%CL 100 36.3
St. AstierNHL3.5 166 55 NHL3.5 117 39
St. AstierNHL5 185 77 NHL5 131 54

For further Guidance, contact your St Astier Distributor.
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