Miami-Dade Implements Hybrid FRP Trenchless Repair System

Aguiar, Luís Kluwe de; Pridmore, Anna; Geraghty, Mark

doi:10.1061/9780784479360.115

Cited by 3 publications

(2 citation statements)

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“…Besides fibrous materials, polyethylene or ceramics are used as a cage [3,4]. Pipes of polymer-reinforced concrete are becoming an attractive system for structural elements, designed for tough operating conditions [5][6][7][8][9][10]. In this case, the casing serves as a corrosion-proof element, reinforcement, holdback for concrete core, and formwork.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of Composite Pipelines for Multipurpose Transportation

et al. 2018

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The problem of monolithic behavior of a metal pipe and fiberglass safety cage has been considered in the article. The prestressed case does not only decrease the deformability of a pipe on-load but it also protects metal from corrosion. The ability to withstand the arising stresses has been investigated for both strip fiberglass reinforcement and the whole construction. It has been shown that the deformability of fiberglass depends on the kind of binder. The maximum strength value has been obtained while gluing glass fibers with butvar-phenolic glue. The calculated rupture strength coefficient of strip fiberglass reinforcement and the analysis of monolithic behaviour of metal and reinforcement proved the precondition as to the plasticity of a developed material. The process of force transmission between a steel pipe and fiberglass at ductile stage has been analyzed in the article. While forecasting the work of a pipe on-load, it is necessary to take into account nonlinearity of metal-fiberglass pipe properties.

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Section: Introductionmentioning

confidence: 99%

Reinforcement of Composite Pipelines for Multipurpose Transportation

et al. 2018

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“…The utilization of such materials in combination with winding method made it possible to create a number of unique structures consisting of a steel (or some other) cylinder and multilayer cage made of unidirectional composite. A wide range of materials is used as s cage: polyethylene [3], ceramics [4], carbon-filled plastics [5], glass fiber plastics [6,7]. The reinforced with fiberglass plastic used in work [8] instead of a reinforcement bar improves the strength of concrete structures in the comparison with conventional steel reinforcement due to the corrosion resistance of reinforcement bars.…”

Section: Introductionmentioning

confidence: 99%

The Investigation of Prestressed Pressure Pipes, Reinforced with Fiberglass Plastic

Trykoz

Kamchatnaya

Pustovoitova

et al. 2018

JERA

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The problem of a combined action of reinforced concrete pipe and fiberglass safety cage. The prestressed cage not only decreases deformability of a pipe under load but protects the material of a pipe from agressive external factors. The process of force transfer from concrete pipe and fiberglass has been analyzed and the equation of stress and deformation for pipes and fiberglass has been deduced. It is shown that stress in fiberglass does not remain constant varying wall thickness, reducing towards the concrete core. Hoop stresses in the concrete core increase towards the centre of a pipe. Unlike known solutions the performed calculations take into account the performance of both layers – concrete and fiberglass. The total stresses in a concrete pipe in the most dangerous section from internal pressure and the reduction by fiberglass winding have been determined. The results obtained in the given work provide with the possibility of modelling long-term properties of composite reinforced concrete constructions and optimization of winding angle of fiberglass casing depending on the diameter of a pipe, tension force and the quantity of reinforcing filler.

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Diagnostics and regulation of rheological characteristics for injection mortars by electromechanical sensors

et al. 2020

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In the article the diagnostic and regulation problems are considered for the rheological characteristics of mortars which are used for pumping into the interpipe gaps or cracks during repairing the pipelines, tunnels, and other objects. It is important to obtain the necessary mortar viscosity which allows providing a complete hole filling. For this aim the experimental dependencies have been determined between the injection mortar viscosity, the water-cement ratio, and the additives quantity in the mortars. According to the Poiseuille's flow law the theoretical dependencies have been obtained between the penetration depth of the injection mortar and viscosity under the different water-cement ratios. The said dependencies are a base during the development of the functioning algorithm the diagnostic and regulation system of the injection cement mortars rheological characteristics. The description of this functioning system is given. The mentioned system application allows increasing the cementation quality, corrosion resistance and durability of the repaired pipeline sections as well as decreasing of the work duration and labor costs.

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Miami-Dade Implements Hybrid FRP Trenchless Repair System

Cited by 3 publications

References 0 publications

Reinforcement of Composite Pipelines for Multipurpose Transportation

Reinforcement of Composite Pipelines for Multipurpose Transportation

The Investigation of Prestressed Pressure Pipes, Reinforced with Fiberglass Plastic

Diagnostics and regulation of rheological characteristics for injection mortars by electromechanical sensors

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