A hybrid, three-layered, softwood-hardwood cross-laminated timber
build-up with outer layers of European spruce (Picea abies) and a center
cross-layer of European beech (Fagus sylvatica) has been investigated
with regard to out-of-plane bending. The determination of the rolling
shear properties of the beech cross-layer performed by different test
and measurement methods comprising bending and compression shear tests
was of primary interest. The shear capacity of the composite is
significantly influenced by the spruce longitudinal shear strength at
the beech-spruce interface. The characteristic values of rolling shear
modulus and strength of the beech cross-layer from the bending tests
were G(r), mean = 350 N/mm(2) and f(v,r,05) = 2.6 N/mm(2), respectively.
Direct strain gauge measurements and compression shear tests resulted in
10-20\% higher values. The high rolling shear properties render the
shear lag implications of the softwood CLTs to a negligible quantity.
The hybrid build-up can be designed as a rigid composite with small
error versus a more exact analysis. The novel investigations reveal the
great potential of mixed softwood-hardwood CLT build-ups for structural
elements in the building sector, (C) 2016 Elsevier Ltd. All rights
reserved.
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Jahr
2016
Monat
OCT 15
Zeitschrift
CONSTRUCTION AND BUILDING MATERIALS
Seiten
1007-1018
Verlag
ELSEVIER SCI LTD
Band
124
Typ
Article
author-email
simon.aicher@mpa.uni-stuttgart.de
issn
0950-0618
keywords-plus
ROLLING SHEAR MODULUS; STRENGTH
funding-acknowledgement
FNR, Fachagentur Nachwachsende Rohstoffe e.V. 22004014; German
Association of glulam manufacturers; company Eugen Decker Holzindustrie
KG, Morbach, Germany
research-areas
Construction & Building Technology; Engineering; Materials Science
Construction & Building Technology; Engineering, Civil; Materials
Science, Multidisciplinary
language
English
funding-text
The work was financially supported by FNR, Fachagentur Nachwachsende
Rohstoffe e.V., contract 22004014 within the ERA-WoodWisdom project
``European hardwoods for the building sector (EU Hardwoods)''. Further
the financial and technical support by German Association of glulam
manufacturers and the company Eugen Decker Holzindustrie KG, Morbach,
Germany, is gratefully acknowledged.
%0 Journal Article
%1 ISI:000385319300100
%A Aicher, Simon
%A Hirsch, Maren
%A Christian, Zachary
%C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
%D 2016
%I ELSEVIER SCI LTD
%J CONSTRUCTION AND BUILDING MATERIALS
%K (CLT); (Fagus (Picea Beech Bending Compression Finite Rolling Shear Spruce abies); analogy analysis; element gamma-Method; method} modulus; shear strength; sylvatica); test; timber wood {Cross-laminated
%P 1007-1018
%R 10.1016/j.conbuildmat.2016.08.051
%T Hybrid cross-laminated timber plates with beech wood cross-layers
%V 124
%X A hybrid, three-layered, softwood-hardwood cross-laminated timber
build-up with outer layers of European spruce (Picea abies) and a center
cross-layer of European beech (Fagus sylvatica) has been investigated
with regard to out-of-plane bending. The determination of the rolling
shear properties of the beech cross-layer performed by different test
and measurement methods comprising bending and compression shear tests
was of primary interest. The shear capacity of the composite is
significantly influenced by the spruce longitudinal shear strength at
the beech-spruce interface. The characteristic values of rolling shear
modulus and strength of the beech cross-layer from the bending tests
were G(r), mean = 350 N/mm(2) and f(v,r,05) = 2.6 N/mm(2), respectively.
Direct strain gauge measurements and compression shear tests resulted in
10-20\% higher values. The high rolling shear properties render the
shear lag implications of the softwood CLTs to a negligible quantity.
The hybrid build-up can be designed as a rigid composite with small
error versus a more exact analysis. The novel investigations reveal the
great potential of mixed softwood-hardwood CLT build-ups for structural
elements in the building sector, (C) 2016 Elsevier Ltd. All rights
reserved.
@article{ISI:000385319300100,
abstract = {{A hybrid, three-layered, softwood-hardwood cross-laminated timber
build-up with outer layers of European spruce (Picea abies) and a center
cross-layer of European beech (Fagus sylvatica) has been investigated
with regard to out-of-plane bending. The determination of the rolling
shear properties of the beech cross-layer performed by different test
and measurement methods comprising bending and compression shear tests
was of primary interest. The shear capacity of the composite is
significantly influenced by the spruce longitudinal shear strength at
the beech-spruce interface. The characteristic values of rolling shear
modulus and strength of the beech cross-layer from the bending tests
were G(r), mean = 350 N/mm(2) and f(v,r,05) = 2.6 N/mm(2), respectively.
Direct strain gauge measurements and compression shear tests resulted in
10-20\% higher values. The high rolling shear properties render the
shear lag implications of the softwood CLTs to a negligible quantity.
The hybrid build-up can be designed as a rigid composite with small
error versus a more exact analysis. The novel investigations reveal the
great potential of mixed softwood-hardwood CLT build-ups for structural
elements in the building sector, (C) 2016 Elsevier Ltd. All rights
reserved.}},
added-at = {2017-05-18T11:32:12.000+0200},
address = {{THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND}},
affiliation = {{Aicher, S (Reprint Author), Univ Stuttgart, Mat Testing Inst MPA, Timber Construct, Pfaffenwaldring 4b, D-70569 Stuttgart, Germany.
Aicher, Simon; Hirsch, Maren; Christian, Zachary, Univ Stuttgart, Mat Testing Inst MPA, Timber Construct, Pfaffenwaldring 4b, D-70569 Stuttgart, Germany.}},
author = {Aicher, Simon and Hirsch, Maren and Christian, Zachary},
author-email = {{simon.aicher@mpa.uni-stuttgart.de}},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/24ad0d7a01b29554c1add6721d17c4c9f/hermann},
doi = {{10.1016/j.conbuildmat.2016.08.051}},
eissn = {{1879-0526}},
funding-acknowledgement = {{FNR, Fachagentur Nachwachsende Rohstoffe e.V. {[}22004014]; German
Association of glulam manufacturers; company Eugen Decker Holzindustrie
KG, Morbach, Germany}},
funding-text = {{The work was financially supported by FNR, Fachagentur Nachwachsende
Rohstoffe e.V., contract 22004014 within the ERA-WoodWisdom project
``European hardwoods for the building sector (EU Hardwoods){''}. Further
the financial and technical support by German Association of glulam
manufacturers and the company Eugen Decker Holzindustrie KG, Morbach,
Germany, is gratefully acknowledged.}},
interhash = {201f166932d880d63991d3876b9f56c0},
intrahash = {4ad0d7a01b29554c1add6721d17c4c9f},
issn = {{0950-0618}},
journal = {{CONSTRUCTION AND BUILDING MATERIALS}},
keywords = {(CLT); (Fagus (Picea Beech Bending Compression Finite Rolling Shear Spruce abies); analogy analysis; element gamma-Method; method} modulus; shear strength; sylvatica); test; timber wood {Cross-laminated},
keywords-plus = {{ROLLING SHEAR MODULUS; STRENGTH}},
language = {{English}},
month = {{OCT 15}},
number-of-cited-references = {{27}},
pages = {{1007-1018}},
publisher = {{ELSEVIER SCI LTD}},
research-areas = {{Construction \& Building Technology; Engineering; Materials Science}},
times-cited = {{1}},
timestamp = {2017-05-18T09:32:12.000+0200},
title = {{Hybrid cross-laminated timber plates with beech wood cross-layers}},
type = {{Article}},
volume = {{124}},
web-of-science-categories = {{Construction \& Building Technology; Engineering, Civil; Materials
Science, Multidisciplinary}},
year = {{2016}}
}