| Penulis/Author |
TIRANA NOVITRI S (1); Dr. Ir. Inggar Septhia Irawati, S.T., M.T., IPM. (2) ; Ir. Ali Awaludin, S.T., M.Eng., Ph.D., IPU., ACPE. (3) |
| Abstrak/Abstract |
Deltamethrin has potential to be used for bamboo strip preservation in laminated
bamboo lumber (LBL) beam industry. However, there is a lack of information
regarding the effect of deltamethrin preservation on the structural performance of
the LBL beam. This study was intended to observe shear and bending performance
of LBL beam made of Dendrocalamus asper, preserved by deltamethrin, and glued
by urea-formaldehyde. The adhesive bonding strength test following ASTM D905
and MD Block method and static bending test based on ASTM D143 were
performed toward preserved and unpreserved samples. The performance was
observed by calculating adhesive bonding strength, MOE, MOR, ductility index, and
investigating failure modes. The results show that the average adhesive bonding
strength of the treated sample is 7.28 MPa (ASTM D905) and 7.03 MPa (MD Block),
while the average adhesive bonding strength of the untreated sample is 7.67 MPa
(ASTM D905) and 7.41 MPa (MD Block). The average MOE (modulus of elasticity)
and MOR (modulus of rupture) of the treated specimen is 18,840 MPa and 110 MPa,
respectively. The untreated specimen's average MOE and MOR are 18,199 MPa and
109 MPa, respectively. The average ductility index of untreated and treated
specimens is 4.8 and 3.9, respectively. The adhesive bonding strength of treated
and untreated samples are higher than the bamboo shear strength. The result
indicates that deltamethrin has no significant effect on the adhesive bonding
strength, MOR, and MOE of the LBL beam. The LBL beams show significant plastic
deformation before final beam failure
Thank you |
