Softwood Surface Compatibility With Inorganic Geopolymer
Andris Berzins, Andris Morozovs, Jan Van den Bulcke, Joris Van Acker
Volume 2, Issue 12, Page 793-798, Year 2017 | DOI: 10.5185/amp.2017/913
Keywords: Geopolymer, wood, sodium silicate, clay.
Abstract: Research describes softwood – pine (Pinus sylvestris L.) and spruce (Picea abies [L.] Karst) and hardwood – birch (Betula pendula Roth) binding with inorganic geopolymer binder, the main focus is on the softwood and geopolymer binding principles. Geopolymer binder is formed from calcined clay and liquid glass. The research describes geopolymer binder compositions with various ratios of liquid glass and clay. This research focuses on mechanical strength of bonded wood samples in shear test and on visualization of binder in three dimensions using X-ray computed tomography with submicron resolution. The scan results are compared with mechanical strength test results. The results of the research shows, that inorganic binder with spruce wood can achieve 7 MPa shear strength. The research describes binding principles that function between wood and geopolymer and explains the main reasons for destruction of joint. Copyright © 2017 VBRI Press.