For Rotary Drum Mixer – All quantities of materials in parts per volume

Note: in warm dry climates if hempcrete is being applied by hand between shuttering boards,
then fast acting binders such as hydraulic limes and cement should be avoided as large amounts
of hempcrete will not be able to be mixed in advance.

https://buildearth.org/?p=241 Using Hydraulic and Hydrated Lime Together
Test mixes

LIME BINDER MIX:
7.0 parts Hydrated Lime
1.5 parts Hydraulic Lime (alt. Fly Ash)
1.5 parts Cement

LIGHTWEIGHT MIX:
10 parts Hemp
1 part Binder
3 parts Water

WALL MIX:
10 parts Hemp
2.5 parts Binder
4 parts Water

FLOOR MIX:
10 parts Hemp
3 parts Binder
4 parts Water

LIME BINDER MIX: FOR HEMP PLASTER
8.5 parts Hydrated Lime
1.5 parts N.H.L.3.5 OR 5 (Hydraulic Lime)

PLASTER MIX (manual):
10 parts Hemp
9 parts Binder for plaster
5-6 parts Water

PLASTER MIX (sprayed:
10 parts Hemp
7 parts Binder for plaster
2 parts Ground Limetone
2 parts Sand
5 parts Water