Influence of linseed oil on the microstructure and composition of lime and lime-metakaolin pastes after a long curing time

0493417 - ÚTAM 2019 RIV GB eng J - Journal Article
Nunes, Cristiana Lara - Mácová, Petra - Frankeová, Dita - Ševčík, Radek - Viani, Alberto
Influence of linseed oil on the microstructure and composition of lime and lime-metakaolin pastes after a long curing time.
Construction and Building Materials. Roč. 189, November (2018), s. 787-796. ISSN 0950-0618. E-ISSN 1879-0526
R&D Projects: GA ČR(CZ) GA18-28142S; GA MŠMT(CZ) LO1219
Keywords : linseed oil * lime * metakaolin * carbonation * hydration * hydrophobicity * amorphous calcium carbonate
OECD category: Materials engineering
Impact factor: 4.046, year: 2018
https://doi.org/10.1016/j.conbuildmat.2018.09.054

This study investigates the effect of linseed oil on the microstructure of lime and lime-metakaolin pastes after 68 months of curing under controlled conditions. The hydrophobicity imparted by linseed oil to the pastes’ bulk was confirmed by measuring water drops’ contact angle. The results of thermal analysis, Xray powder diffraction, and Fourier transform infrared spectroscopy showed that linseed oil significantly hindered the carbonation reaction in both lime and lime-metakaolin pastes and promoted the development of amorphous phases. The obtained results also indicated that linseed oil could foster the pozzolanic reaction in the lime-metakaolin system by stabilizing and/or promoting the development of hydration products resulting in reduced shrinkage in comparison with the reference.
Permanent Link: http://hdl.handle.net/11104/0286785