The Influence of Lamina Wood on The Physical Properties, The Nature of Mechanics, The Strong Class on The Combination of Sengon Wood And Merbau Wood Joko Suryono 1), Yudi Pranoto 2)
Civil Engineering Department of Samarinda State Polytechnic - Indonesia
Abstract
Wood is a material used by man to meet his life needs, both as building materials and other tools. Conditions as a construction component require large size, one that can be by making lamina wood. This study is the influence of lamina on physical properties, mechanical properties, healthy classes using MUF adhesives, which can provide knowledge, so it is utilized as an alternative to solid wood.
Static bending strength test objects for 3 layers are 0.6 cm each (each layer 0.6 cm x 2 cm x 36 cm), while the thickness of the material size tests static bending strength for 5 layers of 0.4 cm (size 0.4 cm x 2 cm x 36 cm). Sliding Strength test object 2 layers thick size 2.5 cm ( size 2.5 cm x 5 cm x 5 cm). Deutsches Institut for Normung Standard (DIN) 52186.
The value of lamina wood content is between 21.19% to 12.43%, density value between 0.58 g/cm3 to 0.73 g/cm3, lamina wood shear strength between 0.31 kN/cm2 to 0.64 kN/cm2, MOE between 619.17 kN/cm2 to 1327.50 kN/cm2, MOR between 5.11 kN/cm2 to 8.45 kN/cm2. Diversity analysis shows that the combination of wood type factor (A) and layer count factor (B) significantly affects MOE diversity analysis of 100.93** and 16.77**. For (MOR) significant influences of 5.66* and 7.07*. In contrast, adhesive and shear strength significantly affect on diversity analysis of 11.71** and 9.03**.
Merbau wood as face/back and Sengon wood as core (p. 3 and 5) can be classified as strong grade II-III. For Modulus Of Rupture (MOR) on the treatment of Sengon wood as face/back and Merbau wood as core (3 and 5) as well as Merbau wood as face/end and Sengon wood as meat ( 3 and 5) can be classified into strong grades II-III.
Keywords: Lamina wood, Physical properties, Mechanics, MOE and MOR
