Additional strengthening of compressed stone masonry walls

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00303572" target="_blank" >RIV/68407700:21110/16:00303572 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Additional strengthening of compressed stone masonry walls

Original language description

The paper presents the results the behaviour of stone masonry walls strengthened with composits strips FRP. In the case of masonry walls additionally strengthened with surface-applied non-prestressed composite strips, the stabilization and strengthening effect of FRP strips is not so unambiguously and so expressly positive, unlike the effect of column confinement, as was manifested by experimental research. The research addressed theoretical and experimental research into the reinforcement and stabilisation of brick and stone masonry walls with composite strips and composite strips with transverse anchors based on high-strength carbon fabrics placed on the surface of masonry walls at several height levels. The verified reinforcement alternatives for the case of a wall uniformly loaded along the whole length may be assessed as problematic and ineffective (risky). The “unenclosed” shape of the CFRP composite applied on the surface of walls does not allow reaching a favourable stress state of the masonry limiting and slowing down the masonry failure process due to the effect of transverse (horizontal) tensile stresses caused by contraction and the interaction of masonry units and the binder. Transverse tensile stresses decisively apply in the failure process of stone masonry under concentric loading causing the “split” of the wall. Non-prestressed FRP composite strips placed on the masonry surface increase the transverse tensile stresses in the places of the composite strip application thus contributing to this process and accelerating the failure of the wall cross section. Experimental research failed to manifest with sufficient reliability the higher load-bearing capacity of a concentrically compressed stone masonry wall reinforced with composite strips applied on the surface or in the grooves of the wall masonry.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JN - Civil engineering

OECD FORD branch

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Project

<a href="/en/project/DF12P01OVV037" target="_blank" >DF12P01OVV037: Progressive non-invasive methods of stabilization, conservation and strengthening of historical structures and their parts with fibre- and nanofibre-based composite materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Structural Faults & Repair - 2016

ISBN

0-947644-82-2

ISSN

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e-ISSN

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Number of pages

9

Pages from-to

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Publisher name

Engineering Technics Press Edinburgh

Place of publication

Edinburgh

Event location

Edinburgh

Event date

May 17, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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