Detail publikace

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

SEDLMAJER, M. ZACH, J. NOVÁK, V. HROUDOVÁ, J. HORSKÝ, A.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

clay masonry unit, masonry, seismicity, polyurethane foam, shear strength

Autoři

SEDLMAJER, M.; ZACH, J.; NOVÁK, V.; HROUDOVÁ, J.; HORSKÝ, A.

Vydáno

21. 7. 2016

Nakladatel

Elsevier

Místo

Netherlands

ISSN

1877-7058

Periodikum

Procedia Engineering

Ročník

151

Číslo

1

Stát

Nizozemsko

Strany od

177

Strany do

182

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S1877705816317623

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203167

BibTex

@article{BUT126973,
  author="Martin {Sedlmajer} and Jiří {Zach} and Vítězslav {Novák} and Jitka {Peterková} and Antonín {Horský}",
  title="Alternative technology of constructing masonry structures designed for areas with increased seismic activity",
  journal="Procedia Engineering",
  year="2016",
  volume="151",
  number="1",
  pages="177--182",
  doi="10.1016/j.proeng.2016.07.374",
  issn="1877-7058",
  url="https://www.sciencedirect.com/science/article/pii/S1877705816317623"
}