Performance of externally CFRP confined RC columns with changes in thickness of the wrap, slenderness of the column and shape of the section

Chikh, Nasr‐Eddine; Mesbah, Habib Abdelhak; Gahmous, M.; Benzaid, Riad

doi:10.1051/matecconf/20120202001

Cited by 10 publications

(1 citation statement)

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“…The second effective variant is Х1Rц, in which the strenthening is done with circle bars Ø8mm, pasted into the groove, cut in the protective layer of the concrete. The same picture is in the studies [12], where instead of circle bars the stripes of 25 mm wide and of 1,4 mm thick were put into the groove.…”

Section: Resultsmentioning

confidence: 83%

The strength of compressed structures with CFRP materials reinforcement when exceeding the cross-section size

et al. 2018

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Abstract. The increase of high-rise construction volume or «High-Rise Construction» requires the use of high-strength concrete and that leads to the reduction in section size of structures and to the decrease in material consumption. First of all, it refers to the compressed elements for which, when the transverse dimensions are reduced, their flexibility and deformation increase but the load bearing capacity decreases. Growth in construction also leads to the increase of repair and restoration works or to the strengthening of structures. The most effective method of their strengthening in buildings of «High-Rise Construction» is the use of composite materials which reduces the weight of reinforcement elements and labour costs on execution of works. In this article the results of experimental research on strength and deformation of short compressed reinforced concrete structures, reinforced with external carbon fiber reinforcement, are presented. Their flexibility is λh=10, and the crosssection dimensions ratio b/h is 2, that is 1,5 times more, than recommended by standards in Russia. The following research was being done for three kinds of strained and deformed conditions with different variants of composite reinforcement. The results of the experiment proved the real efficiency of composite reinforcement of the compressed elements with sides ratio equal to 2, increasing the bearing capacity of pillars till 1,5 times. These results can be used for designing the buildings of different number of storeys.

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Section: Resultsmentioning

confidence: 83%