Composite UHPFRC-concrete construction for rehabilitation – most recent advances and applications

Šajna, Aljoša; Šuput, S.; Denarié, Emmanuel; Brühwiler, E.; Habert, Guillaume; Rossi, P.; Reščič, L.; Wierzbicki, Tomasz

doi:10.1201/b10430-342

Cited by 4 publications

(7 citation statements)

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“…Furthermor e, studies on the new ECO-UHP FRC with mineral addition have shown that the durabilit y is the same as standard UHPFRC because the pore size distribution of ECO-UHPFRC and their protectiv e properties are similar than UHPFRC [16] With these hypothes es it has been shown that both UHPFRC solutions have lower GWP impact than C30/37 concrete solution. However, when the rehabilitation system is chosen, it is hard to know how will the traffic on that bridge evolves over the next 60 years.…”

Section: Impact Of Service Lifementioning

confidence: 91%

“…However, to be conservative in the hypothesis presented in this study, it has been assumed that UHPFRC will only last twice as long as the traditional solution (60 years) without further maintenance due to the very low permeability of the matrix. Similar hypotheses are considered for common UHPFRC and ECO-UHPFRC as capillary absorption and air measureme nts show similar trends for both UHPFRC [9,16]. Consequences of these life cycle hypotheses are discussed later in the paper.…”

Section: Functional Unit and System Boundariesmentioning

confidence: 99%

“…The innovative UHPC matrix uses half of the cement dosage of previous UHPFRC recipes [8], but with an equivalent workability and without losses in the mechanical or protective performances [9,16]. The massive cement replacemen t by limestone filler helps break the workability barrier [17] and minimise cement-superplasticiser incompatibil ity most often problematic when a very low water/binder ratio is sought such as in UHPFRC mixes [18].…”

Section: Log čEzsoški Bridge Rehabilita Tionmentioning

confidence: 99%

See 2 more Smart Citations

Lowering the global warming impact of bridge rehabilitations by using Ultra High Performance Fibre Reinforced Concretes

Habert

Denarié

Šajna

et al. 2013

Cement and Concrete Composites

166

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a b s t r a c tUltra-High Performance Fibre Reinforced Concrete (UHPFRC) is charact erized by a unique combination of extremely low permeability, high strength and deformability. Extensive R&D works and applications over the last 10 years have demonstrated that cast on site UHPFRC is a fast, efficient and price competitive method for the repair/re habilitation of existing structures. More recently, an original concept of ECO-UHPFRC with a high dosage of mineral addition, a low clinker content, and a majority of local components has been applied successfully for the reh abilitation of a bridge in Slovenia. The objective of the present study is to evaluate the global warming impact of bridge rehabilitations with different types of UHPFRC and to compare them to more standard solutions, both on the basis of the bridge rehabilitation performed in Slovenia. Life Cycle Assessment (LCA) methodology is used. The analysis shows that rehabilitations with UHPFRC, and even more ECO-UHPFRC, have a lower impact than traditional methods over the life cycle.

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Section: Impact Of Service Lifementioning

confidence: 91%

Section: Functional Unit and System Boundariesmentioning

confidence: 99%

Section: Log čEzsoški Bridge Rehabilita Tionmentioning

confidence: 99%

See 1 more Smart Citation

Lowering the global warming impact of bridge rehabilitations by using Ultra High Performance Fibre Reinforced Concretes

Habert

Denarié

Šajna

et al. 2013

Cement and Concrete Composites

166

View full text Add to dashboard Cite

show abstract

“…An extensive research-and-development activity during the European Commission's Fifth Framework Programme for Research and Technological Development (FP5) project SA-MARIS and various full-scale applications on bridges in Switzerland [8][9][10][11] have demonstrated that UHPFRC technology is mature for cast in situ applications of rehabilitation using standard equipments. Since the first full-scale application of UHPFRC for the rehabilitation of a bridge took place within the SAMARIS project [10], numerous applications have followed [12]. Considerable efforts have been invested during the FP6 project ARCHES [13] to demonstrate the applicability of this innovative rehabilitation technique.…”

Section: Environmental Life Cycle Assessment Of Railway Bridge Materimentioning

confidence: 99%

Environmental life cycle assessment of railway bridge materials using UHPFRC

Bizjak

Šajna

Slanc

et al. 2016

Materials and Geoenvironment

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The railway infrastructure is a very important component of the world’s total transportation network. Investment in its construction and maintenance is significant on a global scale. Previously published life cycle assessment (LCA) studies performed on road and rail systems very seldom included infrastructures in detail, mainly choosing to focus on vehicle manufacturing and fuel consumption. This article presents results from an environmental study for railway steel bridge materials for the demonstration case of the Buna Bridge in Croatia. The goal of these analyses was to compare two different types of remediation works for railway bridges with different materials and construction types. In the first part, the environmental impact of the classical concrete bridge construction was calculated, whereas in the second one, an alternative new solution, namely, the strengthening of the old steel bridge with ultra-high-performance fibre-reinforced concrete (UHPFRC) deck, was studied. The results of the LCA show that the new solution with UHPFRC deck gives much better environmental performance. Up to now, results of LCA of railway open lines, railway bridges and tunnels have been published, but detailed analyses of the new solution with UHPFRC deck above the old bridge have not previously been performed.

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“…The preferred areas of applications may include structures or part of structures subjected to aggressive environments, structures under shocks effects and composite structures [5]. UHPC properties make it a viable material for thin-bonded concrete bridge deck overlays [6] and for rehabilitation of old bridge [7]. UHPC used in many architectural applications [8, 9, 10].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Nominal Bending Moment Capacity for Plain and Singly Reinforced Rectangular RPC Beam Sections

Al-Hassani¹,

Khalil²,

Danha³

2015

ETJ

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A new generation of Ultra High Performance Concrete (UHPC) named Reactive Powder Concrete (RPC) was developed in the last decades, which offers, superior strength, durability and ductility. One of the main differences between other concretes and RPC is that the latter requires mechanical models capable of taking tensile behavior into account for structural application to enable the material to be fully exploited. The complete stress-strain relationship under direct tensile test and uniaxial compression of different RPC mixes was experimentally investigated. Nonlinear equations are suggested to model the complete tensile and compressive stress-strain relationship for all the RPC mixes studied. In this research an analytical study is devoted to establish a simple equation for predicting the nominal bending moment capacity M n of plain and singly reinforced rectangular RPC beam sections. The equation derived showed good agreement with all the flexural test results performed in previous researches and some other investigations on reactive powder concrete beams.

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Composite UHPFRC-concrete construction for rehabilitation – most recent advances and applications

Cited by 4 publications

References 0 publications

Lowering the global warming impact of bridge rehabilitations by using Ultra High Performance Fibre Reinforced Concretes

Lowering the global warming impact of bridge rehabilitations by using Ultra High Performance Fibre Reinforced Concretes

Environmental life cycle assessment of railway bridge materials using UHPFRC

Prediction of the Nominal Bending Moment Capacity for Plain and Singly Reinforced Rectangular RPC Beam Sections

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