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Fiber reinforcement mortars and concretes: The possibilities of improvement physical - mechanical properties

Mikroarmirani malteri i betoni - mogućnost poboljšanja fizičko-mehaničkih svojstava

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2006
133.pdf (674.7Kb)
Authors
Jevtić, Dragica
Zakić, Dimitrije
Article (Published version)
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Abstract
Basic properties of fiber reinforcement mortar and concrete type composites have been represented in the paper. The results of authors' own laboratory testing of two concrete types as well as two mortar types are shown. Some of the series were made with the addition of hooked steel fibers. Furthermore, testing conducted on mortar specimens made with ordinary sand and crushed brick aggregate are presented. Certain specimen series were made with the additional of monofilament polypropylene fibers. During the testing the following properties were considered: density, compressive and flexural strength as well as shrinkage of mortar. The obtained experimental results pointed to the significant improvement of mechanical properties of the composites with reinforcement.
U radu je dat prikaz osnovnih svojstava mikro­armiranih kompozita tipa maltera i betona. Prikazuju se rezultati sopstvenih laboratorijskih ispitivanja dobijeni na dva tipa maltera kao i na dva tipa betona. Kod nekih od ovih serija korišćena su čelična vlakna zakrivljena na krajevima. Dalje, prikazuju se rezultati ispitivanja dobijeni na uzorcima spravljenim sa polipropilenskim vlaknima i to kao sa rečnim agregatom, tako i sa agregatom od drobljene opeke. Pri ispitivanjima praćena su sledeća svojstva: zapreminska masa, čvrstoća pri pritisku, čvrstoća pri savijanju kao i skupljanje. Rezultati eksperimentalnih ispitivanja pokazuju značajno poboljšanje mehaničkih svojstava kompozita izrađenih sa mikroarmaturom.
Keywords:
composite / mortar / concrete / fiber reinforcement / steel fibers / polypropilene fibers / mechanical strength / crushed brick aggregate / shrinkage / kompozit / malter / beton / čelična vlakna / polipropilenska vlakna / mehanička čvrstoća / agregat od drobljene opeke / skupljanje
Source:
Materijali i konstrukcije, 2006, 49, 3-4, 35-44
Publisher:
  • Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd

ISSN: 0543-0798

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URI
http://grafar.grf.bg.ac.rs/handle/123456789/135
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  • Radovi istraživača / Researcher's publications
  • Катедра за материјале и конструкције
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