Analysis of the impact of high temperature on the change in tensile strength of cement mortars with or without polypropylene fibres added

Journal Title: Scientific Journal of the Military University of Land Forces - Year 2018, Vol 189, Issue 3

Abstract

When evaluating concrete, its strength is the most important feature from the practical point of view. In compliance with technological requirements, the strength of concrete depends primarily on its composition, mainly on the content and strength of cement slurry. This is because this concrete component is most susceptible to changes in working conditions in a construction, including high temperature impact on concrete during the fire. The paper presents the results of tests performed on the cement mortar with and without the addition of polypropylene fibers. This treatment allowed for the elimination of the effect of the coarse aggregate by reason of the accuracy of the tested strength characteristics. The studies concerned the impact of high temperature on the change in tensile strength of cement mortars modified with the addition of polypropylene fibers. The analysis of available literature shows that one of the main causes of concrete’s thermal spalling is seen in high tensile stresses. The results of many tests prove that the addition of polypropylene fibers can have a positive effect on the behavior of concrete structures at high temperatures and help reduce spalling. The polypropylene fibers present in a composite may also positively influence the increase in tensile strength. This article discusses the purpose and scope of research, research methods, the experiment plan, test benches, and test results as well. The conclusions of the study were formulated in the final part of the article.<br/><br/>

Authors and Affiliations

Tomasz Drzymala, Michal Reszka

Keywords

Related Articles

BEZPIECZEŃSTWO. KONTEKST PERSONALNO - AKSJOLOGICZNY

Doniesienie jest próbą zwrócenia uwagi na podmiotowość człowieka, w tym przypadku w kontekście bezpieczeństwa. Temu celowi służy prezentacja koncepcji filozoficznych: teistycznej, naturalistycznej i aktywistycznej. Każda...

PROBLEMS ASSOCIATED WITH CARRYING OUT PROCEDURES OF CO-OPERATION BETWEEN LOCAL MILITARY ADMINISTRATION BODIES AND PUBLIC AUTHORITY BODIES IN CONTINGENCIES

The diversity of today’s threats has led to the situation in which not only are contemporary armed forces tasked with responding to threats of military nature, but they also have to be ready to respond to threats of non-...

OKREŚLENIE WPŁYWU NIESZCZELNOŚCI PRZEKROJU TŁOK-PIERŚCIEŃ-CYLINDER NA WIELKOŚĆ STRAT ŁADUNKU

W referacie przedstawiono modelowanie zmian szczeliny przekroju występującego pomiędzy tłokiem, pierścieniami i tuleją cylindrową, która wpływa na intensywność zjawiska przedmuchów gazów do skrzyni korbowej tłokowego sil...

COMBAT RELATED POST-TRAUMATIC STRESS DISORDER – CAUSES, SYMPTOMS AND CONSEQUENCES

Post-traumatic stress disorder (PTSD) is observed as a group of post-traumatic mental and physical clinical symptoms. It affects soldiers returning from missions as well as victims of different types of disasters. The co...

ON SOME RECENT CYBER THREATS

The growing popularity of computers can result in a number of new problems that were unknown in the past. Recently, apart from military, religious and political threats, one can also distinguish a cyber threat. This term...

Download PDF file
  • EP ID EP395734
  • DOI 10.5604/01.3001.0012.6231
  • Views 123
  • Downloads 0

How To Cite

Tomasz Drzymala, Michal Reszka (2018). Analysis of the impact of high temperature on the change in tensile strength of cement mortars with or without polypropylene fibres added. Scientific Journal of the Military University of Land Forces, 189(3), 109-126. https://europub.co.uk./articles/-A-395734