Optical Data Support on Flexural Strength of Kaolin Coated Lumber Wood via Geopolymer Technology

Kaolin, a geopolymer raw material that is rich with aluminosilicate materials is mixed with alkaline activator solution to produce geopolymer based coating material. Geopolymer technology is stil under studied in terms of coating applications especially using kaolin as raw material. Till date, there are no similar work as our effort in this research. Lumber wood is used as our subtrates as it has low grade wood properties such as low resistance to heat, impact or even durability. In this work, optical microscopy data are analysed in support of flexural properties of kaolin coated lumber woods. As discussed in our previous work, flexural properties shows that at solid/liquid ratio of 0.7, silicate/NaOH ratio of 0.40 and 8M of NaOH, kaolin coated lumber is at its best. Our findings on interfacial micrographs of kaolin geopolymer coating and wood substrates are further observed and studied.