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Trass Lime 2.0


Trass Lime - FL B 2

Technical Data

Mixing Ratio

1 part NHL to 3 part sand maximum


25 kg


Otterbein trass lime FL B 2 is a "Formulated lime" acc. to EN 459-1. It consists of natural hydraulic lime NHL 2 and trass powder acc. to DIN 51043 as natural Puzzolan. The stabilizing process of trass lime FL B 2 is effected through carbonation and hydraulic hardening. Otterbein trass lime FL B 2 is free from cement!


• historic, cement- and gypsum-free natural hydraulic binder

• reduces the risk of efflorescences

• high sulfate resistance

• low-tension hardening process

• very good subsequent hardening properties

• high elasticity

• high water retention capacity in the mortar

• very good side adhesion at stone

• low elasticity module


For the production of plaster-, stoneworking- and natural stone mortar, in particular in the ecological-biological construction of houses and apartments, in the renovation and preservation of historic monuments, for the reduction of the risk of efflorescence of salts damaging the basic structure of a buildings.


Dry, if possible on wooden shelves and protected against draft.

Technical data

Trass approx. 20 %

Bulk density: approx. 0.6 kg/dm3

free CaO: approx. 30 %

SO3: approx. 0.4 %

Compression strength ( acc. to EN 459-2):

28 days: approx. 4.5 N/mm2

6 months: approx. 7.5 N/mm2

12 months: approx. 9.5 N/mm2

Safety instructions

Mortal will react very alkaline with water, thus: Protect skin and eyes, rinse thoroughly with water in case of contact, immediately contact doctor in case of eye contact.

Quality-monitored production

Otterbein trass lime FL B 2 is continuously tested in our plant laboratory within the scope of our in-house monitoring with respect to the fulfilment of composition and properties. This will ensure a uniform quality of the product. Otterbein trass lime FL B 2 has the quality certificate „Building lime“ and is certified acc. to EN 459-1.


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