The Impact of a Polyurea Layer on Cracking and Performance of Reinforced Concrete Beams Under Breaking Load

Abstract

The paper discusses the results of laboratory experimental studies on reinforced concrete components (beams) with an outer polyurea layer. The important part of the study is the comparison of the results concerning the load-displacement relation for the reference beams (without the polyurea layer on their external surfaces) and those with the polyurea layer. The main conclusion from this part of the research is that the beam elements covered with a polyurea layer are protected against corrosion processes even in an emergency state. The occurrence of scratches, even of large size, is neutralized by the coating that effectively bridges them.

Afet Yönetiminde Zarar Görebilirliği Önleyici Yapılar: Bina Yapısal Elemanlarında Poliüre Kaplama

“…Polyurea is synthesized from two reactants, i.e., isocyanate and polyamine, in a 1:1 ratio under high temperature and high pressure conditions. 19,20,21,22,23,24,25,17,26 Polyurea was obtained by reaction of diisocynate and polyamine. 27 Polyurea spray coatings cure quickly even at sub-zero temperatures and have exceptional physical properties such as high hardness, flexibility, tear strength, tensile strength, chemical and water resistance.…”

Spray-formed polyurea composites filled with basalt powder as inorganic waste filler

“…by using disposable cartridge spray guns. Therefore, this method is widely used not only to protect large-scale objects but also to realise small projects, which demand the creation of superior mechanical properties, including impact and blast resistance [12, 13].…”