Calcium carbonate filler in plywood

The collection contains the data regarding the project of application of calcium carbonate flour as a filler in plywood technology. In this project, the study aimed to investigate the possibility of producing plywood using a filler in the gluing process in the form of ground eggshells. The study includes the production of plywood with 0, 1, 5, 10, 15, and 20 parts by weight (pbw) of eggshell filler and one reference variant with rye flour (10 pbw). The research also includes investigating the produced panels' selected physical and mechanical properties. The results show that chicken eggshells can be used to produce plywood if the right amount of filler is chosen to improve specific mechanical and physical properties. Promising properties were obtained when determining the modulus of elasticity under bending (samples E5 and E10) and bending strength when 5 pbw of filler was used, and the same was proper with the internal bond.