Developments Toward  Cost-effective CFRP

Reden, Tjark von; Schüppel, Denny

doi:10.1007/s41777-018-0062-4

Cited by 2 publications

(1 citation statement)

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“…However, the stiffness properties of firedamaged concrete could not be restored significantly (Yaqub 2010;Kai et al, 2011;Yaqub et al, 2013;Roy et al, 2016;Usman et al, 2021), which is the main shortcoming of using FRPs, as the damaged structures should regain both their strength and stiffness. In addition, FRPs are expensive and require high technical expertise for their application (von Reden et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of Low-Cost Repair Techniques on Restoration of Mechanical Properties of Fire-Damaged Concrete

et al. 2022

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Researchers have conducted numerous investigations on various repair techniques to restore the mechanical properties of fire-damaged concrete. However, most of the techniques are either expensive or require high technical skills. As a continuous work, this study involved an experimental investigation of the effects of various low-cost repair techniques to restore the mechanical properties of fire-damaged concrete. Sixty cylindrical concrete samples were subjected to heat ranging from 400°C to 800°C in a propane gas furnace. The samples were categorized into six groups, including the following: undamaged, fire-damaged, and fire-damaged and repaired using water curing; fire-damaged and repaired using cement-based slurry injection; re-curing fire-damaged and repaired with steel wire mesh along with epoxy resin wrapping; and fire-damaged and repaired using epoxy injection. The samples were tested for non-destructive and destructive tests, including ultrasonic pulse velocity, rebound hammer, and compressive strength. The results showed that the use of cement-based slurry injection along with the water-curing repair technique could regain almost 90% of its ultimate strength and secant stiffness, making it the most effective low-cost repair technique for fire-damaged concrete exposed up to 700°C.

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