<![CDATA[The results of strength test of solid and glue laminated timbers represented by Kapur, Teak and Red Meranti are reported in this paper. The method used for the testing was the ASTM D 143-1970.For the purpose of the test, 8 x 12 x 400 cm lumbers of the three species were divided into two groups being de- signated respectively for test in solid and glue laminated form. The first group were tested for modulus of rupture, com- pression parallel to the grain and shear strength under air dry condition. In bending tests, two methods of loading were applied, namely perpendicular and parallel to the laminae in case of glue laminated timbers, and along radial or tangential direction for solid timbers.The second group were resawn further into 0. 9 cm and 1. 9 cm thick timber strips, respectioely, for small size tests of the glue laminated specimens. The 0.9 cm thick strips which were air-dried and then glued with CIBA Phenol resorcinol-formal-dehyde adhesives, were designated for test on modulus of rupture and compression. The 1.9 cm thick strips were divided further into five batches, and each of which were dried respectively until 25, 20, 15, 10 and 5 percent moisture content before glueing with the above mentioned adhesive into six different combination of test pieces namely Teah-Meranti (JM), Teak-Kapur (JK), Meranti-Kapur (MK), Kapur-kapur (KK), Teak-Teak (JJ) and meranti-Meranti (MM).The results of the tests are presented in Table 1 and 2 for modulus of rupture and compression parallel to the grain; and Tabel 3 and 4 respectively for the shear tests of the six lamination combination.]]>
Copyrights © 1989
