TY - JOUR
T1 - Wood-cement-composite behaviour of beech circular hollow sections
AU - Hirschmüller, Sebastian
AU - Unterberger, Seraphin Hubert
AU - Marte, Roman
AU - van de Kuilen, Jan Willem
PY - 2021/3
Y1 - 2021/3
N2 - Beech laminated veneer lumber (LVL) circular hollow sections for use as nails in temporary geotechnical soil nailing systems were developed within this research. For the soil wall stability, beside a sufficient load carrying capacity of the nail cross section, a load carrying connection between the cement annulus and the nail is necessary. As cement grout ensures the bond between the nails and soil for the mobilisation of a soil reinforcement effect, a reliable connection between cement and wood surface is required. Occurring shear forces must be transferred from the nail into the soil through the wood-cement interface similar to reinforced concrete. Pull-off tests on clear LVL specimens with different cement and wood surface modifications as well as the results of large-scale push-out tests are presented. The results reveal a sufficient short-term bonding strength between the cement annulus and the wooden member to transfer the geotechnical loads, but also highlight the necessity of further research on long-term behaviour.
AB - Beech laminated veneer lumber (LVL) circular hollow sections for use as nails in temporary geotechnical soil nailing systems were developed within this research. For the soil wall stability, beside a sufficient load carrying capacity of the nail cross section, a load carrying connection between the cement annulus and the nail is necessary. As cement grout ensures the bond between the nails and soil for the mobilisation of a soil reinforcement effect, a reliable connection between cement and wood surface is required. Occurring shear forces must be transferred from the nail into the soil through the wood-cement interface similar to reinforced concrete. Pull-off tests on clear LVL specimens with different cement and wood surface modifications as well as the results of large-scale push-out tests are presented. The results reveal a sufficient short-term bonding strength between the cement annulus and the wooden member to transfer the geotechnical loads, but also highlight the necessity of further research on long-term behaviour.
UR - http://www.scopus.com/inward/record.url?scp=85096512889&partnerID=8YFLogxK
U2 - 10.1007/s00107-020-01628-4
DO - 10.1007/s00107-020-01628-4
M3 - Article
AN - SCOPUS:85096512889
SN - 0018-3768
VL - 79
SP - 301
EP - 315
JO - European Journal of Wood and Wood Products
JF - European Journal of Wood and Wood Products
IS - 2
ER -