Evaluation of glass fiber reinforced polymer (GFRP) Performance on compressive strength of semi-lightweight perlite concrete

In this days due to increasing importance of concrete consumption some researches have been done about lightweight or semi-lightweight concrete with perlite, in order to prevent from damages of seismic earthquake loads, execute specific architectural plans or implement some projects with materials which are compatible with environment, so research about the application of lightweight material (like perlite) is necessary. The purpose of this study is to present and discuss the experimental results about the impact of glass fiber (GFRP) on semi-lightweight concrete with crushable aggregate (perlite). In this paper the effect of GFRP jacket on the compressive strength of the cylindrical specimens has been checked. experiments were conducted on the 12 specimens, 3 samples were confined with two layers, 3 samples with a layer and the others with no jacket which contains (three specimens with perlite grains and others without perlite grain), it was found that Volumetric strain of semi-lightweight concrete with perlite particles compared to traditional concrete specimens is noticeable while lateral strain is low, so the impact of confinement with GFRP on compressive strength will not be significant. But with this confinement axial strain reach to plastic range, in this case the stability of the samples will be increased by jackets against the applied loads

کلیدواژه ها:

Concrete ، Lightweight Perlite ، Compressive Strength ، Lateral Strain ، GFRP