AFRP Influence on Parallel Bamboo Strand Lumber Beams

Abstract

The mechanical properties of parallel bamboo strand lumber beams could be improved by aramid fiber reinforced polymer (AFRP). So far, no investigation has been conducted on the strengthening of engineering bamboo beams using AFRP. In order to study the efficiency of AFRP reinforcement on parallel bamboo strand lumber beams, 13 beams had been tested and analyzed. Strain gauges and Laser Displacement Sensors were used for the tests. By sensing the strain and deformation data for the specimens under the applied loads, the results showed that AFRP can effectively improve the flexural mechanical properties of parallel bamboo strand lumber beams. However, this reinforcement cannot increase the deflection of bamboo beams indefinitely. When the cloth ratio was 0.48, the deflection of the specimens reached its maximum. With the increase of cloth ratio, the stiffness of parallel bamboo strand lumber beams was increasing. When the cloth ratio reached 0.72%, compared with the un-reinforced specimen, the stiffness increased by 15%. Therefore, it can be inferred that bonding AFRP on the considered specimens can increase the stiffness of parallel bamboo strand lumber beams. The ductility of the specimen can be effectively enhanced by adopting the AFRP provision.

Review on Connections for Original Bamboo Structures

“…In recent years, in order to alleviate the high demand for timber resources in China, the bamboo industry has developed rapidly. With natural bamboo as raw material, a series of new products, such as bamboo-woven plywood, bamboo mat plywood, parallel bamboo strand lumber (PBSL) [5][6][7][8][9], laminated bamboo lumber (LBL) [10][11][12][13][14] and Glubam [15] have been developed by using advanced composite and reconstituted technology and are gradually achieving a high level of industrialization.…”

Flexural Performance of CFRP-Bamboo Scrimber Composite Beams

“…The results indicated that the failure of the strengthened beams started with tensile fractures on the bottom bamboo plates, and no slipping was observed between the strengthening materials and the original bamboo beams prior to the rupturing of the bamboo plates. Li et al [22,23] studied the efficiency of AFRP reinforcement on parallel bamboo strand lumber beams. The results showed that AFRP can effectively improve the flexural mechanical properties of parallel bamboo strand lumber beams.…”

Behaviour of Parallel Bamboo Strand Lumber under compression loading – an experimental study

“…Since PBSL is a new-type of composite material, relevant testing standards and criterion are not established. Previous research on PBSL as well as on laminated bamboo was primarily focused on flexural performance [14][15][16][17][18][19][20]. Limited research was reported on the experimental behaviour of PBSL under axial and eccentric compression as well as on analytical modelling of resulting stress-strain response [21][22][23][24][25].…”