Fracture Energy in Mode I and Mode II of Textile Reinforced Wood

Putzger, Robert; Haller, Peer

doi:10.1007/1-4020-4972-2_224

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Textile reinforcement is embedded within a matrix and connected to the wood in timber constructions; it also enables improvement in load-bearing behavior (Putzger and Haller 2006). High-performance fibers are being diversely studied for repairs and renovations in civil engineering field.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Modulus of Elasticity of Wooden Construction Elements Reinforced with Fiberglass Wire Mesh and Aluminum Wire Mesh

et al. 2017

View full text Add to dashboard Cite

Laminated composite wooden construction elements were produced with 7 layers of Scots pine (Pinus sylvestris L.). Fiberglass wire mesh and aluminum wire mesh, which were used as reinforcement materials, were pressed with polyvinyl acetate (PVAc) and polyurethane-type adhesives between each Scots pine layer. The highest bonding strength values were obtained from laminated control specimens produced with polyurethane adhesive without using support materials (4.98 N/mm 2 ) and laminated control specimens made with polyurethane adhesive without using support materials (4.39 N/mm 2 ), respectively. The modulus of elasticity in bending perpendicular to the glue line values of all the specimens except the laminated control specimens produced with polyurethane adhesive without using support materials (14800 N/mm 2 ) were lower than solid wood (6720 N/mm 2 ). In contrast, in the experiments for the modulus of elasticity parallel to the glue line, the variables (adhesive, intermediary layer materials) used for all experiments and specimens were effective factors. Although the modulus of elasticity in bending parallel to the glue line values of all samples were higher than solid wood (6720 N/mm 2 ), the maximum value was obtained in the laminated control specimens produced with polyurethane adhesive without using support materials (17800 N/mm 2 ).

show abstract

Section: Introductionmentioning

confidence: 99%

Determination of the Modulus of Elasticity of Wooden Construction Elements Reinforced with Fiberglass Wire Mesh and Aluminum Wire Mesh

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The critical fracture energies associated with the three modes in the Power law equation are extracted from Ohene [28] and shown in the Appendix 3. The critical fracture energies of GIC and GIIC are reported by Haller and Putzger [67] for spruce wood. For the third value, GIIIC, which corresponds to a crack that is unlikely to happen in these connections, a high value was adopted similar to Khorasan [66].…”

Section: Structural Damage and Failure Modellingmentioning

confidence: 82%

Performance of Timber-to-Steel Bolted Connections Exposed to Fire

Alam

View full text Add to dashboard Cite

The use of wood as structural elements in buildings is very common in Canada. However, because wood is combustible, the National Building Code of Canada [1] restricts the use of wood to smaller buildings compared to noncombustible buildings. Wood to steel connections, composed of heavy timber, steel plates and bolts, are used to assemble wood components together. The fire performance of timber connections is complex due to the variety of connection types, geometries and fastener arrangements, as well as the properties of the materials under fire exposure.This study investigates the fire performance of timber-to-steel bolted connections under tension loading by conducting fire tests, developing finite element models, and creating simplified empirical calculation methods. Two types of timber-to-steel bolted connections considered in this study are wood-steel-wood (WSW) and steel-wood-steel (SWS).In the experimental testing of this research, a series of full-scale fire tests was conducted on these connections loaded in tension exposed to either the standard CAN/ULC-S101 [2] or a non-standard time-temperature fire curves. Results showed that the fire resistance of all WSW and SWS connections were less than 45 min, which is a minimum fire-resistance rating for Canadian code compliance. The results also showed that the WSW specimens I am grateful for Ba Lam-Thien for his support in helping set up all the tests for this research study. I would also like to thank my colleagues, Samuel Bright Amankwah Boadi and Matt Turco for your assistance in constructing and running the tests. Thank you all for your support during the testing.Thank you to my family, my wife's family, and my friends for your continuous support in good and bad times. Without you I wouldn't have been able to complete this study.

show abstract