Prestressed Concrete Prisms as Reinforcement for Crack Control

Hanson, Norman W.

doi:10.15554/pcij.10011969.14.31

Cited by 9 publications

(1 citation statement)

References 3 publications

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“…However, in the late 1970s, the production of the bars stopped, most likely because of improvements in post-tensioning processes, and no further reference to the production of such bars could be found in the literature. However, experimental work using PCPs in T-beams is reported by Hanson (1969), Zia et al (1976), Chen and Nawy (1994) and Nawy and Chen (1998). Research was reported by Vogel and Svecova (2011) and Davoudi et al (2008a) on the behaviour of PCP prestressed with carbon fibre-reinforced polymers D r a f t 5 (CFRP).…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of concrete one-way slabs using precast prestressed concrete prisms

Gerami¹,

Svecova

2022

Can. J. Civ. Eng.

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The rehabilitation of structures is a complex process that involves many considerations. This paper presents results of a feasibility study on the use of precast prestressed concrete prisms (PCPs) as a near-surface mounted reinforcement for rehabilitation of cracked one-way slabs. The PCPs were cast with high-strength concrete and were concentrically prestressed by one 9 mm diameter stress-relieved seven-wire steel strand. Six identical one-way slabs with a length of 3000 mm were tested. They were loaded until cracking, then fully unloaded and rehabilitated with four PCPs before loading them to failure. Deflected profiles and crack widths of the slabs before and after rehabilitation were compared in this research. This rehabilitation method reduced the magnitude of deflection and crack width of the samples. The cracks induced in the first phase of loading before PCP rehabilitation appeared fully closed after the PCP rehabilitation until five times the original cracking loads of the slabs.

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Section: Introductionmentioning

confidence: 99%