Three component composition consisting of a) a polyol component comprising - at least one polyol P1a with an average molecular weight of 800 to 30'000 g/mol, preferably 850 to 20'000 g/mol, more preferably 900 to 10'000 g/mol, whereby the polyol P1a is: a polyhydroxy-functional fat and/or a polyhydroxy-functional oil or a polyol obtained by chemical modification of natural fats and/or natural oils, and - at least one polyol P1b with an average molecular weight of 48 to 800 g/mol, preferably 60 to 600 g/mol, more preferably 60 to 400 g/mol, most preferably 60 to 300 g/mol, and - water, and b) a polyisocyanate component comprising - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2.5, or - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2 and at least one polyol P2 with an amount of between 1 and 30%, preferably between 5 and 25%, more preferably between 10 and 20% by weight, based on the weight of said polyisocyanate component, wherein said MDI product and said polyol P2 have reacted at least partially, and c) a powder component comprising at least one hydraulic binder, preferably cement and/or calcined paper sludge; wherein the composition contains: 2-(Dimethylamino)ethanol, whereby the molar ratio of the 2-(Dimethylamino)ethanol to the OH-groups of the polyol P1a is between 0.0008 and 0.013, preferably 0.0042 and 0.013, most preferably 0.0084 and 0.011, and wherein the weight ratio of components (A+B) to component ((A+B)/) is in the range of 2: 1.5 to 2: 3.5, wherein components (A+B) represents the combined weight of component and component, wherein the average molecular weight is understood to mean the number average molecular weight, as determined using conventional methods. a) a polyol component comprising - at least one polyol P1a with an average molecular weight of 800 to 30'000 g/mol, preferably 850 to 20'000 g/mol, more preferably 900 to 10'000 g/mol, whereby the polyol P1a is: a polyhydroxy-functional fat and/or a polyhydroxy-functional oil or a polyol obtained by chemical modification of natural fats and/or natural oils, and - at least one polyol P1b with an average molecular weight of 48 to 800 g/mol, preferably 60 to 600 g/mol, more preferably 60 to 400 g/mol, most preferably 60 to 300 g/mol, and - water, and - at least one polyol P1a with an average molecular weight of 800 to 30'000 g/mol, preferably 850 to 20'000 g/mol, more preferably 900 to 10'000 g/mol, whereby the polyol P1a is: a polyhydroxy-functional fat and/or a polyhydroxy-functional oil or a polyol obtained by chemical modification of natural fats and/or natural oils, and a polyhydroxy-functional fat and/or a polyhydroxy-functional oil or a polyol obtained by chemical modification of natural fats and/or natural oils, and - at least one polyol P1b with an average molecular weight of 48 to 800 g/mol, preferably 60 to 600 g/mol, more preferably 60 to 400 g/mol, most preferably 60 to 300 g/mol, and - water, and b) a polyisocyanate component comprising - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2.5, or - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2 and at least one polyol P2 with an amount of between 1 and 30%, preferably between 5 and 25%, more preferably between 10 and 20% by weight, based on the weight of said polyisocyanate component, wherein said MDI product and said polyol P2 have reacted at least partially, and - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2.5, or - a methylene diphenyl diisocyanate product with an average NCO functionality of at least 2 and at least one polyol P2 with an amount of between 1 and 30%, preferably between 5 and 25%, more preferably between 10 and 20% by weight, based on the weight of said polyisocyanate component, wherein said MDI product and said polyol P2 have reacted at least partially, and c) a powder component comprising at least one hydraulic binder, preferably cement and/or calcined paper sludge;