2019
DOI: 10.3390/app9010149
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Experimental Study on the Reinforcement of Prestressed Concrete Cylinder Pipes with External Prestressed Steel Strands

Abstract: The prestressed concrete cylinder pipe (PCCP) suffers from cracks and degrades due to the prestress loss which is induced by wire breakage. Reinforcement with external prestressed strands is an option to return the deteriorating pipe’s ability to withstand internal pressures. This reinforcement contributes to actively compensating for the prestress loss caused by broken wires at an economic price. The crack propagation in the core is constrained by the strands. Moreover, the high tensile strength of strands do… Show more

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Cited by 20 publications
(5 citation statements)
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“…Due to the destruction of the stress balance, the stress concentration and damaged regions of mortar coating appeared near the broken point, which was in agreement with the observation in the prototype test (Zhao et al, 2019).…”
Section: Damage Of the Mortar Coatingsupporting
confidence: 90%
“…Due to the destruction of the stress balance, the stress concentration and damaged regions of mortar coating appeared near the broken point, which was in agreement with the observation in the prototype test (Zhao et al, 2019).…”
Section: Damage Of the Mortar Coatingsupporting
confidence: 90%
“…These developments had impact in topics not directly linked to diameter measurement but which need the assessment of this parameter. A classic example is the monitoring of pipes subjected to a wide pressure range that will induce changes in their diameters, which may be within certain limits [20][21][22][23]. Among a relatively large number of optical techniques devised to perform such measurement the ones based in optical fibers are particularly appellative due to the favorable characteristics of these structures, well known in the context of optical fiber sensing [24][25][26][27][28][29].…”
Section: Modern Fiber Optic-based Methodsmentioning
confidence: 99%
“…Key parameters of the adopted strand are given in Table 3. For the utilized split wedge without jacking force, ∆l re = 6 mm (measured in the prototype test [29]). Given µ = 0.1, the calculated radius of the strand wrapped outside the pipe, r st , and the retraction length, l re , can be known as follows:…”
Section: Parameters Of the Design And Materialsmentioning
confidence: 99%
“…A prototype test of ECP reinforced by steel strands with the fixed spacing calculated in Section 3.2 was performed in an assembled apparatus (Figure 7). The apparatus was mainly constituted by two ECPs, whose internal diameters were 2000 mm [29]. The adopted pipes were exactly the same as those given in Section 3.1.…”
Section: A Prototype Testmentioning
confidence: 99%
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