English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

International audienceA  synthesis  of work carried  out for several  years within our laboratory  is presented.  The  first part includes  an  experimental  study.  The  tests  are  performed  on  hollow  cylindrical  concrete  specimens,  subjected  to  compressive  loading.  At  stress  levels  lower  than  80  %  of  the  peak  stress,  the  variation  of  permeability  is  small  and  it  is  slightly  influenced  by  the  stress,  but  as  the  load  exceeds  80  %  of  the  peak  stress,  micro-cracking  increases  rapidly,  causing  an  increase  of the  permeability  and  a greater  sensitivity  to the  applied  load.  In  the  post-peak  phase  the  increase  of  permeability  is  much  larger  due  to  significant  crack  width  growth.  The  effects  of  the  applied  load  on  permeability  are  greater  with  temperature.  Finally,  the  experimental  results  seem  to  agree  with  the  format  of  coupled  evolution  of  the  permeability  due  to  damage  and  temperature  assumed  by Gawin  et al.  [10]. The  second  part  of  this  paper  includes  a  numerical  study.  The  lattice  mechanics  model  is  extended  to  the  hydraulic  problem  and,  for this  case,  it    appears  that  permeability  is the  size  independent  variable.  Additionally, the  evolution  of permeability  with  damage  and  with  stress  ratio  in the pre-peak  phase  is compared  with  experimental  results  on different types  of  concrete

restoration of buildings and monuments

Zusammenhang zwischen fortschreitender Schädigung, Temperatur und Permeabilität des Betons: Experimentelle und numerische Untersuchungen / Coupling between Progressive Damage, Temperature and Permeability of Concrete: Experimental and Numerical Study