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Rubén-Daniel López-Carreño

Bio: Rubén-Daniel López-Carreño is an academic researcher from Polytechnic University of Catalonia. The author has contributed to research in topics: Whitetopping & Bond strength. The author has an hindex of 2, co-authored 2 publications receiving 19 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, an extensive experimental program to evaluate bond strength between Conventional Concrete and Asphalt Concrete (AC) substrates and self-compacting high-performance concrete (SCHPC) overlays was conducted.

25 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed an innovative solution that consisted of placing mechanical connectors in the overlay interfaces to provide them with post-cracking strength and maintaining the monolithic response of the pavement.
Abstract: Concrete bonded whitetoppings and overlays usually fail due to a loss of bond between the layers as a consequence of direct actions (traffic loads) or indirect actions (temperature differences or shrinkage in the layers). These actions generate stresses in the interface that may exceed the strength capacity of the union between layers. This paper proposed an innovative solution for this problem that consisted of placing mechanical connectors in the overlay interfaces to provide them with post-cracking strength and maintaining the monolithic response of the pavement. Three experimental programs on real-scale pavements with two types of mechanical connectors were studied under heavy traffic in terms of structural performance. Findings reveal that this technique might be an excellent solution to the problem of interfacial debonding.

2 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the effect of fiber reinforcement on concrete-concrete bond performance was evaluated using a round-robin-like test program in two independent labs in Canada and Austria (UBC, CUAS).
Abstract: The effectiveness and durability of a concrete repair or retrofit is mostly affected by its bond and compatibility to the existing substrate. Although our understanding of concrete-concrete bond has advanced greatly, there remains a major uncertainty in the adoption of a proper methodology to assess the quality of bond, comprising the accuracy of reproducing the stresses that the interface undergoes in a structural application, the problem of disturbed stress paths, size & rate effects, drilling-induced damage, and the possibility of conversions between shear and tensile bond. A discussion on comparability of bond tests in tension and shear is presented. The study is based on a round-robin-like test program in two independent labs in Canada and Austria (UBC, CUAS) and encompasses normal strength, high strength, and fiber reinforced concretes. The raw data comparison is complemented with an investigation of semi-empirical methods and predictive models, conversions between shear and tension coefficients, and suitability/limitations of various methodologies for assessing the effects of fiber reinforcement on bond.

61 citations

Journal ArticleDOI
TL;DR: In this paper, a detailed review of the critical durability issues associated with the structural bond for rehabilitation purposes, with a special focus on the performance of modern overlay materials such as ultra-high performance concrete (UHPC) and Engineered Cementitious Composites (ECC).
Abstract: There has been an increasing interest in the field of rehabilitation, mainly for repair and strengthening of reinforced concrete (RC) structures. One of the most effective techniques comprises externally bonded concrete composites, in which the efficacy of rehabilitation depends considerably on the integrity and durability of the bond established between the overlaying and the substrate concrete . This paper presents a detailed review of the critical durability issues associated with the structural bond for rehabilitation purposes, with a special focus on the performance of modern overlay materials such as ultra-high performance concrete (UHPC) and Engineered Cementitious Composites (ECC). A number of factors determining the durability of concrete-concrete bonded joints have been identified and grouped into two categories related to materials – joint characteristics and in-service conditions. For each of these factors, the main findings obtained in previous studies are summarized and discussed and the aspects that need further investigation are outlined.

30 citations

Journal ArticleDOI
TL;DR: The Integrated Value Model for Structural Assessment (MIVES) incorporates the Value Function (VF) concept in an Analytic Hierarchy Process (AHP), combining both Multi-criteria Decision Making and Multi-Attribute Utility Theory.
Abstract: There are very few methods that can be used for the assessment of pavement conditions. Their application to urban networks tends to be complex, given the wide variety of urban pavement types (concr...

27 citations

Journal ArticleDOI
TL;DR: In this paper, an experimental test is proposed to investigate the flexural behavior of damaged reinforced concrete (RC) beams strengthened by self-compacting concrete jacketing under different sustaining load.

22 citations

Journal ArticleDOI
TL;DR: In this paper, a statistical-experimental analysis to evaluate recycled PET fiber reinforced concrete with various fiber dose and aspect ratio was performed under workability, compressive, flexural, and splitting tensile tests.
Abstract: Discarded polyethylene terephthalate (PET) bottles have damaged our ecosystem. Problems of marine fauna conservation and land fertility have been related to the disposal of these materials. Recycled fibre is an opportunity to reduce the levels of waste in the world and increase the mechanical performance of the concrete. PET as concrete reinforcement has demonstrated ductility and post-cracking strength. However, its performance could be optimized. This study considers a statistical-experimental analysis to evaluate recycled PET fibre reinforced concrete with various fibre dose and aspect ratio. 120 samples were experimented under workability, compressive, flexural, and splitting tensile tests. The results pointed out that the fibre dose has more influence on the responses than its fibre aspect ratio, with statistical relation on the tensional toughness, equivalent flexural strength ratio, volumetric weight, and the number of fibres. Moreover, the fibre aspect ratio has a statistical impact on the tensional toughness. In general, the data indicates that the optimal recycled PET fibre reinforced concrete generates a superior performance than control samples, with an improvement similar to those reinforced with virgin fibres.

21 citations