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Prof. Rebeca Martínez-García
Universidad de León (Spain)

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0 mix design
0 Design parameters
0 self-compacting concrete
0 Recycled aggregates
0 fresh concrete properties

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Review
Published: 29 June 2021 in Applied Sciences
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One of the prime objectives of this review is to understand the role of design parameters on the mechanical properties (Compressive and split tensile strength) of Self-Compacting Concrete (SCC) with recycled aggregates (Recycled Coarse Aggregates (RCA) and Recycled Fine Aggregates (RFA)). The design parameters considered for review are Water to Cement (W/C) ratio, Water to Binder (W/B) ratio, Total Aggregates to Cement (TA/C) ratio, Fine Aggregate to Coarse Aggregate (FA/CA) ratio, Water to Solid (W/S) ratio in percentage, superplasticizer (SP) content (kg/cu.m), replacement percentage of RCA, and replacement percentage of RFA. It is observed that with respect to different grades of SCC, designed parameters affect the mechanical properties of SCC with recycled aggregates.

ACS Style

P. Jagadesh; Andrés Juan-Valdés; M. Guerra-Romero; Julia Morán-Del Pozo; Julia García-González; Rebeca Martínez-García. Effect of Design Parameters on Compressive and Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate: An Overview. Applied Sciences 2021, 11, 6028 .

AMA Style

P. Jagadesh, Andrés Juan-Valdés, M. Guerra-Romero, Julia Morán-Del Pozo, Julia García-González, Rebeca Martínez-García. Effect of Design Parameters on Compressive and Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate: An Overview. Applied Sciences. 2021; 11 (13):6028.

Chicago/Turabian Style

P. Jagadesh; Andrés Juan-Valdés; M. Guerra-Romero; Julia Morán-Del Pozo; Julia García-González; Rebeca Martínez-García. 2021. "Effect of Design Parameters on Compressive and Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate: An Overview." Applied Sciences 11, no. 13: 6028.

Review
Published: 22 June 2021 in Materials
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Most concrete studies are concentrated on mechanical properties especially strength properties either directly or indirectly (fresh and durability properties). Hence, the ratio of split tensile strength to compressive strength plays a vital role in defining the concrete properties. In this review, the impact of design parameters on the strength ratio of various grades of Self-Compacting Concrete (SCC) with recycled aggregate is assessed. The design parameters considered for the study are Water to Cement (W/C) ratio, Water to Binder (W/B) ratio, Total Aggregates to Cement (TA/C) ratio, Fine Aggregate to Coarse Aggregate (FA/CA) ratio, Water to Solid (W/S) ratio in percentage, superplasticizer (SP) content (kg/cu.m), replacement percentage of recycled coarse aggregates (RCA), replacement percentage of recycled fine aggregates (RFA), fresh density and loading area of the specimen. It is observed that the strength ratio of SCC with recycled aggregates is affected by design parameters.

ACS Style

Rebeca Martínez-García; P. Jagadesh; Gabriel Búrdalo-Salcedo; Covadonga Palencia; María Fernández-Raga; Fernando Fraile-Fernández. Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate. Materials 2021, 14, 3480 .

AMA Style

Rebeca Martínez-García, P. Jagadesh, Gabriel Búrdalo-Salcedo, Covadonga Palencia, María Fernández-Raga, Fernando Fraile-Fernández. Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate. Materials. 2021; 14 (13):3480.

Chicago/Turabian Style

Rebeca Martínez-García; P. Jagadesh; Gabriel Búrdalo-Salcedo; Covadonga Palencia; María Fernández-Raga; Fernando Fraile-Fernández. 2021. "Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate." Materials 14, no. 13: 3480.

Book chapter
Published: 01 April 2021 in Educação: Teorias, Métodos e Perspectivas Vol II
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ACS Style

Fernando Jorge Fraile-Fernández; Rebeca Martínez-García; José Manuel Ugidos-Carrera; José Luis Barros-Ruíz. PROYECTO DE MEJORA DOCENTE ENSEÑANZA-APRENDIZAJE EN EXPRESIÓN GRÁFICA EN INGENIERÍA MEDIANTE USO DE NUEVAS METODOLOGÍAS. Educação: Teorias, Métodos e Perspectivas Vol II 2021, 258 -274.

AMA Style

Fernando Jorge Fraile-Fernández, Rebeca Martínez-García, José Manuel Ugidos-Carrera, José Luis Barros-Ruíz. PROYECTO DE MEJORA DOCENTE ENSEÑANZA-APRENDIZAJE EN EXPRESIÓN GRÁFICA EN INGENIERÍA MEDIANTE USO DE NUEVAS METODOLOGÍAS. Educação: Teorias, Métodos e Perspectivas Vol II. 2021; ():258-274.

Chicago/Turabian Style

Fernando Jorge Fraile-Fernández; Rebeca Martínez-García; José Manuel Ugidos-Carrera; José Luis Barros-Ruíz. 2021. "PROYECTO DE MEJORA DOCENTE ENSEÑANZA-APRENDIZAJE EN EXPRESIÓN GRÁFICA EN INGENIERÍA MEDIANTE USO DE NUEVAS METODOLOGÍAS." Educação: Teorias, Métodos e Perspectivas Vol II , no. : 258-274.

Journal article
Published: 17 March 2021 in Sustainability
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The purpose of Graphic Design is to transfer information about design into reality and concerns the analysis, design and representation of mechanical components and assemblies. For the correct rendering of mechanical components, this discipline requires a command of, and the ability to, manage techniques and systems for graphical representation and standardisation; 3D models in a virtual environment enable engineering students to develop graphical skills and spatial awareness. The objective of the present study is the development of an application for smart devices (mobile phones and tablets), based on the constructionist theory of learning, which will enable first year engineering degree students to acquire the technical drawing knowledge and skills necessary to render mechanical assemblies. The mobile application tested and designed in this work is called ARPAID. It is a learning tool aimed at teaching students about the representation of mechanical assemblies as part of an engineering Graphic Design course. Teaching material and a process for evaluation have been designed. A detailed description is given of a classroom activity accompanied by a tabulation and analysis of the results obtained. This mobile application, when used in a Graphic Design course, promotes a more rapid understanding of spatial relationships and problems, fosters students’ learning and motivation, and develops higher order skills. Results from before and after the use of the application will be presented and do indeed show significant improvements in student performance.

ACS Style

Fernando Fraile-Fernández; Rebeca Martínez-García; Manuel Castejón-Limas. Constructionist Learning Tool for Acquiring Skills in Understanding Standardised Engineering Drawings of Mechanical Assemblies in Mobile Devices. Sustainability 2021, 13, 3305 .

AMA Style

Fernando Fraile-Fernández, Rebeca Martínez-García, Manuel Castejón-Limas. Constructionist Learning Tool for Acquiring Skills in Understanding Standardised Engineering Drawings of Mechanical Assemblies in Mobile Devices. Sustainability. 2021; 13 (6):3305.

Chicago/Turabian Style

Fernando Fraile-Fernández; Rebeca Martínez-García; Manuel Castejón-Limas. 2021. "Constructionist Learning Tool for Acquiring Skills in Understanding Standardised Engineering Drawings of Mechanical Assemblies in Mobile Devices." Sustainability 13, no. 6: 3305.

Journal article
Published: 05 January 2021 in Sustainability
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One of the growing demands in concrete manufacture is the availability of natural fine aggregates, which account for 35% to 45% of the total concrete. An alternative method of disposal of fine recycled concrete aggregates (FRCA) generated from demolition and construction waste (C&DW) is their usage in mortar and the development of recycled mortar. The main aim of this research work is to evaluate the viability of incorporating FRCA from urban C&DW for the manufacture of cement-based mortars. Simple processing techniques like washing and sieving are adopted to improve the FRCA quality. Physical and chemical characterization of ingredients is carried out. In total four mixes of 1:3 (cement: sand) mortar with partial replacement of normalized sand with FRCA (0%, 25%, 50%, and 100%) are evaluated for mechanical properties. Water to cement ratio for all four mortar mixes are determined by fixed consistency. Mechanical and physical properties like density, compressive strength, and flexural strength are studied for various curing periods, and the result is that the optimum usage of FRCA is 25% based on a 90-day curing period.

ACS Style

Rebeca Martínez-García; María Rojas; Julia Pozo; Fernando Fraile-Fernández; Andrés Juan-Valdés. Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA). Sustainability 2021, 13, 414 .

AMA Style

Rebeca Martínez-García, María Rojas, Julia Pozo, Fernando Fraile-Fernández, Andrés Juan-Valdés. Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA). Sustainability. 2021; 13 (1):414.

Chicago/Turabian Style

Rebeca Martínez-García; María Rojas; Julia Pozo; Fernando Fraile-Fernández; Andrés Juan-Valdés. 2021. "Evaluation of Mechanical Characteristics of Cement Mortar with Fine Recycled Concrete Aggregates (FRCA)." Sustainability 13, no. 1: 414.

Review
Published: 16 December 2020 in Materials
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This article presents an overview of the bibliographic picture of the design parameter’s influence on the mix proportion of self-compacting concrete with recycled aggregate. Design parameters like water-cement ratio, water to paste ratio, and percentage of superplasticizers are considered in this review. Standardization and recent research on the usage of recycled aggregates in self-compacting concrete (SCC) exploit its significance in the construction sector. The usage of recycled aggregate not only resolves the negative impacts on the environment but also prevents the usage of natural resources. Furthermore, it is necessary to understand the recycled aggregate property’s role in a mixed design and SCC properties. Design parameters are not only influenced by a mix design but also play a key role in SCC’s fresh properties. Hence, in this overview, properties of SCC ingredients, calculation of design parameters in mix design, the effect of design parameters on fresh concrete properties, and the evolution of fresh concrete properties are studied.

ACS Style

Rebeca Martínez-García; P. Jagadesh; Fernando J. Fraile-Fernández; Julia M. Morán-Del Pozo; Andrés Juan-Valdés. Influence of Design Parameters on Fresh Properties of Self-Compacting Concrete with Recycled Aggregate—A Review. Materials 2020, 13, 5749 .

AMA Style

Rebeca Martínez-García, P. Jagadesh, Fernando J. Fraile-Fernández, Julia M. Morán-Del Pozo, Andrés Juan-Valdés. Influence of Design Parameters on Fresh Properties of Self-Compacting Concrete with Recycled Aggregate—A Review. Materials. 2020; 13 (24):5749.

Chicago/Turabian Style

Rebeca Martínez-García; P. Jagadesh; Fernando J. Fraile-Fernández; Julia M. Morán-Del Pozo; Andrés Juan-Valdés. 2020. "Influence of Design Parameters on Fresh Properties of Self-Compacting Concrete with Recycled Aggregate—A Review." Materials 13, no. 24: 5749.

Journal article
Published: 14 February 2020 in Materials
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The use of construction and demolition wastes (C&DW) is a trending future option for the sustainability of construction. In this context, a number of works deal with the use of recycled concrete aggregates to produce concrete for structural and non-structural purposes. Nowadays, an important number of C&DW management plants in the European Union (EU) and other countries have developed robust protocols to obtain high-quality coarse recycled aggregates that comply with different European standards in order to be used to produce new concrete. The development of self-compacting concrete (SCC) is another way to boost the sustainability of construction, due to the important reduction of energy employed. Using recycled aggregates is a relatively recent scientific area, however, studies on this material in the manufacture of self-compacting concrete have proven the feasibility thereof for conventional structural elements as well as high-performance and complex structural elements, densely reinforced structures, difficult-to-access formwork and difficult-to-vibrate elements. This paper presents an original study on the use of coarse recycled concrete aggregate (CRA) to obtain self-compacting concrete. Concrete with substitution ratios of 20%, 50% and 100% are compared with a control concrete. The purpose of this comparison is to check the influence of CRA on fresh SCC as well as its physical and mechanical properties. The parameters studied are material characterization, self-compactability, compressive strength, and tensile and flexural strength of the resulting concrete. The results conclude that it is feasible to use CRA for SCC production with minimal losses in the characteristics.

ACS Style

Rebeca Martínez-García; M. Ignacio Guerra-Romero; Julia M. Morán-Del Pozo; Jorge De Brito; Andrés Juan-Valdés. Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option. Materials 2020, 13, 868 .

AMA Style

Rebeca Martínez-García, M. Ignacio Guerra-Romero, Julia M. Morán-Del Pozo, Jorge De Brito, Andrés Juan-Valdés. Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option. Materials. 2020; 13 (4):868.

Chicago/Turabian Style

Rebeca Martínez-García; M. Ignacio Guerra-Romero; Julia M. Morán-Del Pozo; Jorge De Brito; Andrés Juan-Valdés. 2020. "Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option." Materials 13, no. 4: 868.