Alternative technology of constructing masonry structures designed for areas with increased seismic activity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00015253%3A_____%2F16%3AN0000001" target="_blank" >RIV/00015253:_____/16:N0000001 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/16:PU119742

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.proeng.2016.07.374" target="_blank" >http://dx.doi.org/10.1016/j.proeng.2016.07.374</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2016.07.374" target="_blank" >10.1016/j.proeng.2016.07.374</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Alternative technology of constructing masonry structures designed for areas with increased seismic activity

Popis výsledku v původním jazyce

The Czech Republic is a country which generally sees low seismic activity; however, this activity needs to be taken into account in ca 50 % of the country’s area with 10 districts being considered as having seismic activity higher than 0.08 g. In terms of masonry structures, this issue concerns mainly the execution of the head joints of the masonry and its reinforcement (both in the direction of the bed joint and in the perpendicular direction). All these technologies are rather difficult and expensive to implement. The research focuses on assessing the possibilities of constructing dry masonry and binding it with polyurethane foam. This method allows for significantly higher shear strength of the masonry and appears to be an interesting alternative in the area of constructing buildings in seismically active areas. The structure was stiffened by filling hollow masonry units with large cavities with polyurethane foam. The PUR foam was sprayed into the units during construction. The foam thus applied hardens perpendicularly to the bed joint of the masonry and, having expanded throughout the clay units, it functions as a binder and a stiffening component to the masonry as a whole. The initial shear and flexural strength of the masonry segments was determined. The newly developed method of filling the cavities of masonry units with PUR foam was compared with the conventional method of constructing masonry by means of bonding the blocks with mortar or PUR foam in the bed joints (with no cavities filled). The filling of the masonry unit cavities brought a significant increase in the shear and flexural strength of the masonry. This indicates the stiffness of the structure increased as well.

Název v anglickém jazyce

Alternative technology of constructing masonry structures designed for areas with increased seismic activity

Popis výsledku anglicky

The Czech Republic is a country which generally sees low seismic activity; however, this activity needs to be taken into account in ca 50 % of the country’s area with 10 districts being considered as having seismic activity higher than 0.08 g. In terms of masonry structures, this issue concerns mainly the execution of the head joints of the masonry and its reinforcement (both in the direction of the bed joint and in the perpendicular direction). All these technologies are rather difficult and expensive to implement. The research focuses on assessing the possibilities of constructing dry masonry and binding it with polyurethane foam. This method allows for significantly higher shear strength of the masonry and appears to be an interesting alternative in the area of constructing buildings in seismically active areas. The structure was stiffened by filling hollow masonry units with large cavities with polyurethane foam. The PUR foam was sprayed into the units during construction. The foam thus applied hardens perpendicularly to the bed joint of the masonry and, having expanded throughout the clay units, it functions as a binder and a stiffening component to the masonry as a whole. The initial shear and flexural strength of the masonry segments was determined. The newly developed method of filling the cavities of masonry units with PUR foam was compared with the conventional method of constructing masonry by means of bonding the blocks with mortar or PUR foam in the bed joints (with no cavities filled). The filling of the masonry unit cavities brought a significant increase in the shear and flexural strength of the masonry. This indicates the stiffness of the structure increased as well.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Procedia Engineering

ISSN

1877-7058

e-ISSN

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Svazek periodika

151

Číslo periodika v rámci svazku

2016

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

177-182

Kód UT WoS článku

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EID výsledku v databázi Scopus

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