BALOK LAMINASI KOMBINASI BAMBU PETUNG ( DENDROCLAMUS ASPER ) DAN BAMBU ATER ( GIGANTOCHLOA ATTER ) SEBAGAI BAHAN KONSTRUKSI ALTERNATIF
Abstract
One form of innovation in the use of bamboo as a construction material to replace wood is laminated beams or what is known as glulam glued laminated timber, which is the manufacture of artificial boards/beams using a lamination method that uses adhesive for the process of joining bamboo. The aims of this study were: (1) to determine the compressive strength of laminated petung bamboo (Dendroclamus asper), ater bamboo (Gigantochloa atter) and the combined laminated petung and ater bamboo, (2) to determine the flexural strength of laminated petung bamboo (Dendroclamus asper), bamboo ater (Gigantochloa atter) and laminated combination of petung and ater bamboo, (3) to determine the equivalence of laminated beams with wood from the results of the flexural strength test, (4) to determine the equivalence of laminated beams with wood from the results of the compressive strength test. Based on the classification of wood in Indonesia according to the Indonesian Timber Construction Regulations (PPKI) 1961. The results of this study indicate that: (1) The average compressive strength of petung bamboo is 14.44 MPa, the average compressive strength for ater bamboo is 12.96 MPa, and the combined compressive strength results get an average of 13 .33 MPa. (2) The average value of flexural strength is 167.323 MPa for petung bamboo, the flexural strength results for ater bamboo get an average of 139.043 MPa, the combined beam flexural strength results get an average of 169.680 MPa. (3) Based on the results of the study, the flexural strength of petung bamboo laminated beams was equivalent to class I wood, ater bamboo was equivalent to strong class II wood, the combination of petung bamboo and ater bamboo was equivalent to class I wood. (4) Based on the results of the compressive strength study of bamboo lamisani beams petung is equivalent to class I wood, ater bamboo is equivalent to class II wood, the combination of petung and ater bamboo is classified as class I wood.
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