This page has only limited features, please log in for full access.

Prof. Antonio José Tenza-Abril
Universidad Alicante

Basic Info


Research Keywords & Expertise

0 Building Materials
0 Concrete
0 Construction
0 Lightweight Materials
0 Mortars

Fingerprints

Concrete
Construction
Mortars
Building Materials

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 01 March 2021 in Sustainability
Reads 0
Downloads 0

One of the main problems faced in coastal management is the loss or destruction of beaches due to erosion. A considerable diversity of factors is involved in coastal erosion, which makes it a complex system to study. The quality of the material that constitutes the beach, as well as the choice of appropriate materials for its nourishment are two of the main ones. Therefore, to make future nourishment projects more sustainable and durable, this work proposes a sediment quality classification based on the physical properties and wear process obtained through laboratory tests. The study of these variables, using principal component analysis, discriminant analysis and ANOVA, has divided the quality of 70 samples into three main groups. A Sediment Quality Classification Index (SQCI) is proposed, which categorizes the quality of the material into poor, regular or good, providing the coastal engineer with a simple tool to ensure more sustainable beach nourishments.

ACS Style

José Pagán; Antonio Tenza-Abril; Luis Aragonés; Yolanda Villacampa; Isabel López. Classification of Sediment Quality according to Its Behavior in the Accelerated Particle Wear Test (APW). Sustainability 2021, 13, 2633 .

AMA Style

José Pagán, Antonio Tenza-Abril, Luis Aragonés, Yolanda Villacampa, Isabel López. Classification of Sediment Quality according to Its Behavior in the Accelerated Particle Wear Test (APW). Sustainability. 2021; 13 (5):2633.

Chicago/Turabian Style

José Pagán; Antonio Tenza-Abril; Luis Aragonés; Yolanda Villacampa; Isabel López. 2021. "Classification of Sediment Quality according to Its Behavior in the Accelerated Particle Wear Test (APW)." Sustainability 13, no. 5: 2633.

Journal article
Published: 16 December 2020 in Materials
Reads 0
Downloads 0

Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates tend to separate from the mortar matrix, floating towards the surface, a phenomenon called segregation. Segregation in LWAC can affect its durability properties, its density, and directly affect its structural efficiency. In this work, different concrete densities (1700 kg/m3 and 1900 kg/m3) manufactured with different dosages (two different lightweight aggregates) and compaction methods (one or two layers) were analyzed to verify the impact of segregation on its structural efficiency. For this purpose, the segregation index of the LWAC was obtained by means of the image analysis technique. In addition, to obtain their structural efficiency, the density and compressive strength were obtained at different heights of the tested specimens. The results show the vibration of the samples in two layers leads to a more efficient elimination of trapped air, a reduction in the risk of segregation, and better structural efficiency.

ACS Style

Afonso Miguel Solak; Antonio José Tenza-Abril; Victoria Eugenia García-Vera. Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes. Materials 2020, 13, 5754 .

AMA Style

Afonso Miguel Solak, Antonio José Tenza-Abril, Victoria Eugenia García-Vera. Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes. Materials. 2020; 13 (24):5754.

Chicago/Turabian Style

Afonso Miguel Solak; Antonio José Tenza-Abril; Victoria Eugenia García-Vera. 2020. "Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes." Materials 13, no. 24: 5754.

Conference paper
Published: 09 November 2020 in Proceedings
Reads 0
Downloads 0

One of the most aggressive attacks to which cement-based materials can be exposed is that produced by sulphate. During this attack, expansive products are formed, causing volumetric strains in hardened materials, which brings microcracking and the reduction of their strength and durability. The use of non-destructive techniques for characterizing the microstructure of cement-based materials, and for following the development of deleterious processes which can affect them, has become an important research field. Among them, non-linear ultrasonic (NLU) techniques have shown to be useful for evaluating the material degradation. The aim of this work is to study the possibility of using the NLU technique for the non-destructive evaluation of initial development of internal sulphate attack in cement-based materials. Cement pastes were prepared using ordinary Portland cement, to which an appropriate amount of calcium sulphate 2-hydrate was added during the setting for producing an internal attack in the samples. Furthermore, its effects in the microstructure have been followed with mercury intrusion porosimetry. The expansion and linear ultrasonic pulse velocity were also determined. The preliminary results indicate that the NLU technique could be useful for studying the development of sulphate attacks in the short-term, complementing the information provided by other techniques.

ACS Style

José Marcos Ortega; Marina Miró; Pedro Poveda; Antonio José Tenza-Abril; Jaime Ramis; Miguel Ángel Climent. Non-Destructive Evaluation of Internal Sulphate Attack in Cement-Based Materials Applying Non-Linear Ultrasonic Techniques. Proceedings 2020, 67, 19 .

AMA Style

José Marcos Ortega, Marina Miró, Pedro Poveda, Antonio José Tenza-Abril, Jaime Ramis, Miguel Ángel Climent. Non-Destructive Evaluation of Internal Sulphate Attack in Cement-Based Materials Applying Non-Linear Ultrasonic Techniques. Proceedings. 2020; 67 (1):19.

Chicago/Turabian Style

José Marcos Ortega; Marina Miró; Pedro Poveda; Antonio José Tenza-Abril; Jaime Ramis; Miguel Ángel Climent. 2020. "Non-Destructive Evaluation of Internal Sulphate Attack in Cement-Based Materials Applying Non-Linear Ultrasonic Techniques." Proceedings 67, no. 1: 19.

Journal article
Published: 15 September 2020 in Cement and Concrete Research
Reads 0
Downloads 0

This paper focuses on the microstructural characterisation of pastes produced with thermoactivated recycled cement (RC). To this end, a comprehensive experimental program combining thermogravimetry (TG), X-ray diffraction (XRD), isothermal calorimetry, scanning electron microscopy (SEM), quantitative backscattering electron (BSE) imaging, mercury intrusion porosimetry (MIP), nitrogen adsorption and mechanical tests, was performed. The hydration and microstructure evolution of RC was monitored over time, between 8 h and 28 days, and compared against ordinary Portland cement (OPC) pastes of equal w/b or workability. RC showed effective rehydration with formation of C-S-H, AFm, AFt and carbonation phases since very early ages, developing high initial reactivity, with lower coarse porosity and higher volume of hydration products than OPC pastes of equal w/b up to 3 days. The RC paste is defined by two sub-structures composed by the outer hydrated phases of bulk paste and the inner RC hydration products, which affect its fresh and hardened behaviour.

ACS Style

José Alexandre Bogas; Ana Carriço; Antonio José Tenza-Abril. Microstructure of thermoactivated recycled cement pastes. Cement and Concrete Research 2020, 138, 106226 .

AMA Style

José Alexandre Bogas, Ana Carriço, Antonio José Tenza-Abril. Microstructure of thermoactivated recycled cement pastes. Cement and Concrete Research. 2020; 138 ():106226.

Chicago/Turabian Style

José Alexandre Bogas; Ana Carriço; Antonio José Tenza-Abril. 2020. "Microstructure of thermoactivated recycled cement pastes." Cement and Concrete Research 138, no. : 106226.

Journal article
Published: 02 July 2020 in Sustainability
Reads 0
Downloads 0

In Cuba, tons of construction and demolition waste (CDW) are generated during urban construction and reconstruction activities every year. The use of CDW, such as recycled concrete aggregates (RCA) and reclaimed asphalt pavement (RAP), in pavement construction is a viable solution to preserve the consumption of natural aggregates (NA), and to minimize the impact of landfill. The main objective of this work is to obtain a 5–10 mm aggregate fraction of RCA and RAP, to obtain an appropriate recycled coarse aggregate for manufacturing hot mix asphalt (HMA). Each source of RCA, RAP and NA, and the combinations RCA/RAP (0/100, 25/75, 50/50, 75/25 and 100/0) were characterized (moisture, asphalt content of RAP, specific gravity, water absorption, and flakiness index) for determining a better combination. The results showed that the combination (RCA/RAP) that best meets the NA aggregates specifications used for hot mix asphalt were RCA/RAP: 25/75 and 50/50. The results show the possibility of combining both wastes to obtain a coarse aggregate fraction with a high environmental benefit, by reducing the use of natural resources.

ACS Style

Jessika Morales Fournier; Debora Acosta Álvarez; Anadelys Alonso Aenlle; Antonio Tenza-Abril; Salvador Ivorra. Combining Reclaimed Asphalt Pavement (RAP) and Recycled Concrete Aggregate (RCA) from Cuba to Obtain a Coarse Aggregate Fraction. Sustainability 2020, 12, 5356 .

AMA Style

Jessika Morales Fournier, Debora Acosta Álvarez, Anadelys Alonso Aenlle, Antonio Tenza-Abril, Salvador Ivorra. Combining Reclaimed Asphalt Pavement (RAP) and Recycled Concrete Aggregate (RCA) from Cuba to Obtain a Coarse Aggregate Fraction. Sustainability. 2020; 12 (13):5356.

Chicago/Turabian Style

Jessika Morales Fournier; Debora Acosta Álvarez; Anadelys Alonso Aenlle; Antonio Tenza-Abril; Salvador Ivorra. 2020. "Combining Reclaimed Asphalt Pavement (RAP) and Recycled Concrete Aggregate (RCA) from Cuba to Obtain a Coarse Aggregate Fraction." Sustainability 12, no. 13: 5356.

Journal article
Published: 23 April 2020 in Materials
Reads 0
Downloads 0

Sustainability requirements are gaining importance in the construction industry, which needs to take specific measures in the design and construction of concrete structures. The use of recycled aggregates in concrete may be of special interest. Recycling a construction waste will close the life cycle of the original materials (e.g., concrete). Thus, environmental benefits would come from the lower waste generation, and from a lower necessity of raw materials for new structures. The current Spanish code for structural concrete considers the use of recycled aggregates in replacement rates up to 20% by aggregate mass, assimilating their properties with those of concretes without aggregate replacement. Higher substitution percentages would require further testing. In this work, substitution of coarse aggregate for recycled aggregates (with replacement percentages of 25%, 50% and 100%) has been studied, and the concrete’s residual properties after exposure to high temperatures (between 350 °C and 850 °C) have been assessed. Compressive strength and capillary water absorption tests were made after heating, and the experiments showed higher residual strength in concretes with the greatest content of recycled aggregates. However, a statistical analysis made with additional data available in the literature seemed to predict otherwise, and the recycled aggregate replacement would have a negative effect on the residual strength.

ACS Style

Francisco B. Varona; Francisco Baeza-Brotons; Antonio J. Tenza-Abril; F. Javier Baeza; Luis Bañón. Residual Compressive Strength of Recycled Aggregate Concretes after High Temperature Exposure. Materials 2020, 13, 1981 .

AMA Style

Francisco B. Varona, Francisco Baeza-Brotons, Antonio J. Tenza-Abril, F. Javier Baeza, Luis Bañón. Residual Compressive Strength of Recycled Aggregate Concretes after High Temperature Exposure. Materials. 2020; 13 (8):1981.

Chicago/Turabian Style

Francisco B. Varona; Francisco Baeza-Brotons; Antonio J. Tenza-Abril; F. Javier Baeza; Luis Bañón. 2020. "Residual Compressive Strength of Recycled Aggregate Concretes after High Temperature Exposure." Materials 13, no. 8: 1981.

Conference paper
Published: 01 January 2020 in Proceedings e report
Reads 0
Downloads 0

The main objective to this work is to establish a relationship between shoreline evolution and sediment wear. The shoreline evolution trend is similar to of the results obtained by the accelerated particle wear test (APW). However, the relationship between the number of APW test cycles and the years of shoreline evolution is not clear. In Guardamar beach the ratio (years/cycles) is 9.7, in Marineta Casiana beach (it is 5.6, and in Arenal beach it is 3. Differences may be due to the different mineralogical composition and morphology of the sand particles.

ACS Style

Isabel López; José Ignacio Pagán; Antonio J. Tenza-Abril; Luis Aragonés; Luis Bañón. Relationship between shoreline evolution and sediment wear. Proceedings e report 2020, 432 -440.

AMA Style

Isabel López, José Ignacio Pagán, Antonio J. Tenza-Abril, Luis Aragonés, Luis Bañón. Relationship between shoreline evolution and sediment wear. Proceedings e report. 2020; ():432-440.

Chicago/Turabian Style

Isabel López; José Ignacio Pagán; Antonio J. Tenza-Abril; Luis Aragonés; Luis Bañón. 2020. "Relationship between shoreline evolution and sediment wear." Proceedings e report , no. : 432-440.

Conference paper
Published: 01 January 2020 in Proceedings e report
Reads 0
Downloads 0

The historical evolution of sandy beaches on the coast of Alicante (Spain) has been analysed from aerial images from 1956 to 2019. The beach nourishments carried out in the 1990s to avoid coastal damages and to improve the touristic offer were studied. Shoreline evolution and beach surface has been obtained using GIS. The change of the sediment composition, from gravel to sand, due to the fills has caused a relevant imbalance. Beach nourishments failed its main aim of avoiding the shoreline erosion, causing environmental damages to the nearby Posidonia oceanica meadows.

ACS Style

José Ignacio Pagán; Isabel López; Luis Aragonés; Antonio J. Tenza-Abril. Experiences with beach nourishments on the coast of Alicante, Spain. Proceedings e report 2020, 441 -450.

AMA Style

José Ignacio Pagán, Isabel López, Luis Aragonés, Antonio J. Tenza-Abril. Experiences with beach nourishments on the coast of Alicante, Spain. Proceedings e report. 2020; ():441-450.

Chicago/Turabian Style

José Ignacio Pagán; Isabel López; Luis Aragonés; Antonio J. Tenza-Abril. 2020. "Experiences with beach nourishments on the coast of Alicante, Spain." Proceedings e report , no. : 441-450.

Journal article
Published: 27 December 2019 in Sustainability
Reads 0
Downloads 0

The main objective of this work is to evaluate the properties of hot asphalt mixtures that have been manufactured with different recycled concrete aggregate (RCA) percentages (0%, 20%, 40%, 60% and 80% of the fraction 5–13 mm) and asphalt (4%, 4.5% and 5%). Dense asphalt mixtures were made; partially replacing the natural aggregate (NA) fraction between 5 and 13 mm. Marshall specimens were manufactured to determine the main properties of the asphalt concrete (AC) in terms of density, voids, stability and deformation. Additionally, the optimal asphalt content (OAC) was determined, and measured the water sensibility, the stiffness modulus and the permanent deformation. The results corroborate the potential for using these sources of construction and demolition waste (CDW) as a RCA in asphalt concrete and show that the hot asphalt mixtures with up to 40% substitution of natural aggregate by recycled aggregate in the fraction 5–13 mm present good behavior.

ACS Style

Debora Acosta Álvarez; Anadelys Alonso Aenlle; Antonio José Tenza-Abril; Salvador Ivorra. Influence of Partial Coarse Fraction Substitution of Natural Aggregate by Recycled Concrete Aggregate in Hot Asphalt Mixtures. Sustainability 2019, 12, 250 .

AMA Style

Debora Acosta Álvarez, Anadelys Alonso Aenlle, Antonio José Tenza-Abril, Salvador Ivorra. Influence of Partial Coarse Fraction Substitution of Natural Aggregate by Recycled Concrete Aggregate in Hot Asphalt Mixtures. Sustainability. 2019; 12 (1):250.

Chicago/Turabian Style

Debora Acosta Álvarez; Anadelys Alonso Aenlle; Antonio José Tenza-Abril; Salvador Ivorra. 2019. "Influence of Partial Coarse Fraction Substitution of Natural Aggregate by Recycled Concrete Aggregate in Hot Asphalt Mixtures." Sustainability 12, no. 1: 250.

Journal article
Published: 09 December 2019 in Construction and Building Materials
Reads 0
Downloads 0

Lightweight aggregate concrete (LWAC) compaction is a critical stage during concrete production and remains one of the major problems because excessive vibration time can easily produce the segregation phenomenon. LWAC is susceptible to segregation because of the differences between the densities of lightweight aggregates and mortar, influencing the strength and durability of concrete. In the present study, the variation in compressive strength, modulus of elasticity, ultrasonic parameters and segregation indexes were obtained in LWAC compacted with different vibration time. A statistical analysis was applied for establishing the structure of the variable dependence in segregated concretes. The vibration time and the density of the lightweight aggregate used to produce the LWAC can influence the compressive strength depending on the density of the lightweight aggregate used (up to 67% in concretes produced with the lightest aggregate). Based on these parameters and the results obtained experimentally, a simplified expression to estimate the compressive strength is proposed.

ACS Style

A.J. Tenza-Abril; David Benavente; C. Pla; F. Baeza-Brotons; Javier Valdes-Abellan; Afonso Miguel Solak. Statistical and experimental study for determining the influence of the segregation phenomenon on physical and mechanical properties of lightweight concrete. Construction and Building Materials 2019, 238, 117642 .

AMA Style

A.J. Tenza-Abril, David Benavente, C. Pla, F. Baeza-Brotons, Javier Valdes-Abellan, Afonso Miguel Solak. Statistical and experimental study for determining the influence of the segregation phenomenon on physical and mechanical properties of lightweight concrete. Construction and Building Materials. 2019; 238 ():117642.

Chicago/Turabian Style

A.J. Tenza-Abril; David Benavente; C. Pla; F. Baeza-Brotons; Javier Valdes-Abellan; Afonso Miguel Solak. 2019. "Statistical and experimental study for determining the influence of the segregation phenomenon on physical and mechanical properties of lightweight concrete." Construction and Building Materials 238, no. : 117642.

Journal article
Published: 05 December 2019 in Applied Sciences
Reads 0
Downloads 0

Acid attack causes the deterioration of construction material surfaces. The objective of this study was to investigate the degradation of different types of cement mortar in terms of variations in pore size distribution obtained by mercury intrusion porosimetry (MIP), mass loss, and compressive strength. The mortars were manufactured with nanosilica, zinc stearate, and an ethyl silicate coating. After curing (28 days), the samples were subjected to acid exposure for 90 days, immersed ina solution (3% w/w) of sulphuric acid (H2SO4). The results indicate that the mortars showed a more refined microstructure, with a higher proportion of smaller pores (

ACS Style

José Marcos Ortega; Victoria E. García-Vera; Afonso Miguel Solak; Antonio José Tenza-Abril. Pore Structure Degradation of Different Cement Mortars Exposed to Sulphuric Acid. Applied Sciences 2019, 9, 5297 .

AMA Style

José Marcos Ortega, Victoria E. García-Vera, Afonso Miguel Solak, Antonio José Tenza-Abril. Pore Structure Degradation of Different Cement Mortars Exposed to Sulphuric Acid. Applied Sciences. 2019; 9 (24):5297.

Chicago/Turabian Style

José Marcos Ortega; Victoria E. García-Vera; Afonso Miguel Solak; Antonio José Tenza-Abril. 2019. "Pore Structure Degradation of Different Cement Mortars Exposed to Sulphuric Acid." Applied Sciences 9, no. 24: 5297.

Journal article
Published: 17 November 2019 in Construction and Building Materials
Reads 0
Downloads 0

In the heritage protection, one of the most interesting scenarios is the preservation of the original materials. In this case, the surfaces are generally treated to consolidate them. The aim of this paper is to evaluate the effect of ethyl silicate coatings on surface consolidation, water absorption and porosity of earthen materials. Peeling tests, water absorption measurements (capillary and Karsten) and textural alteration analyses were conducted by optical microscopy. In addition, the protective role of the ethyl silicate coatings against rainwater, HCl rain and H2SO4 rain was evaluated to compare the durability of coated and control samples. It was found that ethyl silicate substantially improved the above properties as well as microstructural features of the samples. Scanning Electron Microscopy and EDX mapping revealed the coating was not regularly spread on the surface. Despite this, Mercury Intrusion Porosimetry tests showed the total porosity of samples coated with ethyl silicate was clearly reduced.

ACS Style

Victoria E. García-Vera; Antonio José Tenza-Abril; Marcos Lanzón. The effectiveness of ethyl silicate as consolidating and protective coating to extend the durability of earthen plasters. Construction and Building Materials 2019, 236, 117445 .

AMA Style

Victoria E. García-Vera, Antonio José Tenza-Abril, Marcos Lanzón. The effectiveness of ethyl silicate as consolidating and protective coating to extend the durability of earthen plasters. Construction and Building Materials. 2019; 236 ():117445.

Chicago/Turabian Style

Victoria E. García-Vera; Antonio José Tenza-Abril; Marcos Lanzón. 2019. "The effectiveness of ethyl silicate as consolidating and protective coating to extend the durability of earthen plasters." Construction and Building Materials 236, no. : 117445.

Journal article
Published: 05 November 2019 in Materials
Reads 0
Downloads 0

This work presents five different methods for quantifying the segregation phenomenon in lightweight aggregate concretes (LWAC). The use of LWACs allows greater design flexibility and substantial cost savings, and has a positive impact on the energy consumption of a building. However, these materials are susceptible to aggregate segregation, which causes an irregular distribution of the lightweight aggregates in the mixture and may affect the concrete properties. To quantify this critical process, a new method based on image analysis is proposed and its results are compared to the well-established methods of density and ultrasonic pulse velocity measurement. The results show that the ultrasonic test method presents a lower accuracy than the other studied methods, although it is a nondestructive test, easy to perform, and does not need material characterization. The new methodology via image analysis has a strong correlation with the other methods, it considers information from the complete section of the samples, and it does not need the horizontal cut of the specimens or material characterization.

ACS Style

Afonso Miguel Solak; Antonio José Tenza-Abril; Francisco Baeza-Brotons; David Benavente. Proposing a New Method Based on Image Analysis to Estimate the Segregation Index of Lightweight Aggregate Concretes. Materials 2019, 12, 3642 .

AMA Style

Afonso Miguel Solak, Antonio José Tenza-Abril, Francisco Baeza-Brotons, David Benavente. Proposing a New Method Based on Image Analysis to Estimate the Segregation Index of Lightweight Aggregate Concretes. Materials. 2019; 12 (21):3642.

Chicago/Turabian Style

Afonso Miguel Solak; Antonio José Tenza-Abril; Francisco Baeza-Brotons; David Benavente. 2019. "Proposing a New Method Based on Image Analysis to Estimate the Segregation Index of Lightweight Aggregate Concretes." Materials 12, no. 21: 3642.

Journal article
Published: 17 October 2019 in Applied Surface Science
Reads 0
Downloads 0

Calcium hydroxide nanoparticles (nanolime) are a novel solution for consolidating clay-based plasters and adobes in cultural heritage constructions. The suspension is applied as a coating and fully compatible with calcareous earthen materials. Ca(OH)2 nanoparticles (NPs) are transformed into protective CaCO3 coatings due to a carbonation reaction. This work aims to study the effectiveness of Ca(OH)2 NPs coatings in protecting the surface of earthen plasters. To do this, the effect of nanolime on surface consolidation, water permeability and durability in front of rain action is evaluated. It was found that the treatment improved the superficial cohesion and reduced water permeability of plasters due to formation of calcareous coatings due to partial obstruction of pores on the surface. In contrast, the effectiveness of the treatment is not demonstrated against rainwater and acid environments (HCl). Finally, acid rain simulation (H2SO4) led to deposition of protective films of gypsum that might delay the plaster deterioration in the long term.

ACS Style

Victoria E. García-Vera; Antonio José Tenza-Abril; Afonso Miguel Solak; Marcos Lanzón. Calcium hydroxide nanoparticles coatings applied on cultural heritage materials: Their influence on physical characteristics of earthen plasters. Applied Surface Science 2019, 504, 144195 .

AMA Style

Victoria E. García-Vera, Antonio José Tenza-Abril, Afonso Miguel Solak, Marcos Lanzón. Calcium hydroxide nanoparticles coatings applied on cultural heritage materials: Their influence on physical characteristics of earthen plasters. Applied Surface Science. 2019; 504 ():144195.

Chicago/Turabian Style

Victoria E. García-Vera; Antonio José Tenza-Abril; Afonso Miguel Solak; Marcos Lanzón. 2019. "Calcium hydroxide nanoparticles coatings applied on cultural heritage materials: Their influence on physical characteristics of earthen plasters." Applied Surface Science 504, no. : 144195.

Journal article
Published: 01 September 2019 in Key Engineering Materials
Reads 0
Downloads 0

Lightweight aggregates used in lightweight aggregate concrete (LWAC) exert an important influence on the compressive strength and elastic modulus of concrete. A good homogeneity of the material is essential in this type of concrete once a non-uniform distribution of aggregates in the mixture may strongly affect the concrete global properties, which are commonly considered as homogenous values for design purposes. LWAC, due to density differences among its components, are susceptive to segregation. The separation of the aggregates from the rest of the mixture increases the risk of cracking and areas where segregation or insufficient compaction occur are mostly the areas where the concrete failure begins. The aim of this study is analysing possible variations caused by segregation on compressive strength (fc) along the height of cylindrical samples, comparing results of four sections extracted from samples segregated intentionally.

ACS Style

Afonso Miguel Solak; Antonio José Tenza-Abril. Compressive Strength Variations in Lightweight Aggregate Concrete Samples Affected by Segregation Caused by Excessive Vibration. Key Engineering Materials 2019, 821, 493 -499.

AMA Style

Afonso Miguel Solak, Antonio José Tenza-Abril. Compressive Strength Variations in Lightweight Aggregate Concrete Samples Affected by Segregation Caused by Excessive Vibration. Key Engineering Materials. 2019; 821 ():493-499.

Chicago/Turabian Style

Afonso Miguel Solak; Antonio José Tenza-Abril. 2019. "Compressive Strength Variations in Lightweight Aggregate Concrete Samples Affected by Segregation Caused by Excessive Vibration." Key Engineering Materials 821, no. : 493-499.

Proceedings article
Published: 13 August 2019 in Computational Methods and Experimental Measurements XIX
Reads 0
Downloads 0
ACS Style

Antonio José Tenza-Abril; Rosana Satorre-Cuerda; Patricia Compañ-Rosique; Francisco José Navarro-González; Yolanda Villacampa. COMPRESSIVE STRENGTH CLASSIFICATION OF LIGHTWEIGHT AGGREGATE CONCRETE USING A SUPPORT VECTOR MACHINE MODEL. Computational Methods and Experimental Measurements XIX 2019, 1 .

AMA Style

Antonio José Tenza-Abril, Rosana Satorre-Cuerda, Patricia Compañ-Rosique, Francisco José Navarro-González, Yolanda Villacampa. COMPRESSIVE STRENGTH CLASSIFICATION OF LIGHTWEIGHT AGGREGATE CONCRETE USING A SUPPORT VECTOR MACHINE MODEL. Computational Methods and Experimental Measurements XIX. 2019; ():1.

Chicago/Turabian Style

Antonio José Tenza-Abril; Rosana Satorre-Cuerda; Patricia Compañ-Rosique; Francisco José Navarro-González; Yolanda Villacampa. 2019. "COMPRESSIVE STRENGTH CLASSIFICATION OF LIGHTWEIGHT AGGREGATE CONCRETE USING A SUPPORT VECTOR MACHINE MODEL." Computational Methods and Experimental Measurements XIX , no. : 1.

Journal article
Published: 08 March 2019 in Applied Sciences
Reads 0
Downloads 0

Recently, there has been a great effort to incorporate industrial waste into cement-based materials to reach a more sustainable cement industry. In this regard, the Bayer process of obtaining alumina from bauxite generates huge amounts of waste called red mud. Few research articles have pointed out the possibility that red mud has pozzolanic activity. In view of that, the objective of this research is to analyse the short-term effects in the pore structure, mechanical performance and durability of mortars which incorporate up to 20% of red mud as a clinker replacement. As a reference, ordinary Portland cement and fly ash Portland cement mortars were also studied. The microstructure was characterised through mercury intrusion porosimetry and non-destructive impedance spectroscopy, which has not previously been used for studying the pore network evolution of red mud cement-based materials. The possible pozzolanic activity of red mud has been checked using differential scanning calorimetry. The non-steady state chloride migration coefficient and the mechanical properties were studied too. According to the results obtained, the addition of red mud entailed a greater microstructure refinement of the mortar, did not worsen the resistance against chloride ingress and reduced the compressive strength compared to control binders.

ACS Style

José Marcos Ortega; Marta Cabeza; Antonio José Tenza-Abril; Teresa Real-Herraiz; Miguel Ángel Climent; Isidro Sánchez. Effects of Red Mud Addition in the Microstructure, Durability and Mechanical Performance of Cement Mortars. Applied Sciences 2019, 9, 984 .

AMA Style

José Marcos Ortega, Marta Cabeza, Antonio José Tenza-Abril, Teresa Real-Herraiz, Miguel Ángel Climent, Isidro Sánchez. Effects of Red Mud Addition in the Microstructure, Durability and Mechanical Performance of Cement Mortars. Applied Sciences. 2019; 9 (5):984.

Chicago/Turabian Style

José Marcos Ortega; Marta Cabeza; Antonio José Tenza-Abril; Teresa Real-Herraiz; Miguel Ángel Climent; Isidro Sánchez. 2019. "Effects of Red Mud Addition in the Microstructure, Durability and Mechanical Performance of Cement Mortars." Applied Sciences 9, no. 5: 984.

Journal article
Published: 07 March 2019 in Applied Surface Science
Reads 0
Downloads 0

Coatings are often used to reinforce the surface of monuments, although little is known about their surface dispersion and effectiveness. This paper examines the surface distribution of Ca(OH)2 nanoparticle-based coatings (Ca(OH)2-NP). The coatings were sprayed on different substrates and studied by image analysis software and microscopy. Using image segmentation techniques the phase of interest (coating) was separated from the background material and evaluated. In control surfaces, up to 92.73% of the examined area was coated by the nanoparticles. In contrast, when the treatment was sprayed on building materials the NP-coatings were preferentially deposited in weaker zones, such as cracks or defects of the surface. In this case, the processed images revealed that less than 30% of the examined surface was coated by the NP-coating.

ACS Style

Marcos Lanzón; Victoria E. García-Vera; Antonio J. Tenza-Abril; Valerio De Stefano. Use of image analysis to evaluate surface dispersion and covering performance of nanolime coatings sprayed on heritage material substrates. Applied Surface Science 2019, 480, 962 -968.

AMA Style

Marcos Lanzón, Victoria E. García-Vera, Antonio J. Tenza-Abril, Valerio De Stefano. Use of image analysis to evaluate surface dispersion and covering performance of nanolime coatings sprayed on heritage material substrates. Applied Surface Science. 2019; 480 ():962-968.

Chicago/Turabian Style

Marcos Lanzón; Victoria E. García-Vera; Antonio J. Tenza-Abril; Valerio De Stefano. 2019. "Use of image analysis to evaluate surface dispersion and covering performance of nanolime coatings sprayed on heritage material substrates." Applied Surface Science 480, no. : 962-968.

Journal article
Published: 01 March 2019 in Science of The Total Environment
Reads 0
Downloads 0

The construction of harbours on the coast and/or dams in river courses prevents the contribution of sediments from rivers and ravines to the coastline and interferes with natural coastal dynamics. In the present study, the main objective is to provide information to the coastal engineer to predict and quantify the wear and tear of sand for artificial beach nourishment, as well as the durability of the intervention. For this purpose: (i) the amount of sample used in laboratory tests is related to the actual activation layer due to waves, and (ii) the material durability (aging) is demonstrated. Sands belonging to 9 beaches in the province of Alicante (Spain) were tested and studied, with different sample quantities (60, 75, 100, 120 and 150 g), the granulometry, calcimetry and wear (using the accelerated particle wear test, APW). The results showed that (generally) the greater the amount of sample used (activation layer), the greater the mass loss (reduction to size <0.063 mm) during the first cycle of the wear test. This may be due to the fact that the greater the amount of material in suspension (as a consequence of greater energy for the same volume of water), the greater the possibility of collision between particles, and therefore, greater particle wear and greater erosion on the beach. In addition, when the same material was subjected to new wear test cycles, that is, without the addition of new material (as is currently happening on the coasts), the durability of the same was compromised up to its wear limit. Particle wear reduces the median sediment size, which encourages movement towards the off-shore zone. Therefore, the wave energy, the material durability and the median sand diameter are elements to be taken into account in a beach nourishment.

ACS Style

M. López; F. Baeza-Brotons; I. López; Antonio José Tenza-Abril; L. Aragonés. Factors influencing the rate of beach sand wear: Activation layer thickness and sediment durability. Science of The Total Environment 2019, 658, 367 -373.

AMA Style

M. López, F. Baeza-Brotons, I. López, Antonio José Tenza-Abril, L. Aragonés. Factors influencing the rate of beach sand wear: Activation layer thickness and sediment durability. Science of The Total Environment. 2019; 658 ():367-373.

Chicago/Turabian Style

M. López; F. Baeza-Brotons; I. López; Antonio José Tenza-Abril; L. Aragonés. 2019. "Factors influencing the rate of beach sand wear: Activation layer thickness and sediment durability." Science of The Total Environment 658, no. : 367-373.

Journal article
Published: 14 January 2019 in Applied Sciences
Reads 0
Downloads 0

Currently, political policies aimed at curbing the abuse of natural resources have given rise to a conscientiousness leading to the reevaluation of wastes. Wastes generated from previous mining operations greatly impact the environment, often leaving a legacy of elevated concentrations of heavy metals in the surrounding soil and water. In this study, two types of waste from the mining district of La Union (Spain) were used to study their use as a component of road wearing courses. The physical and mechanical characteristics were determined to identify the optimal content of bitumen, as well as the fatigue resistance using the four-point beam fatigue test, in all the mixtures manufactured. The mine tailings exhibited adequate physical and mechanical properties to be utilized as a coarse aggregate for a wearing course. The results indicate that one of the studied mine tailing forms could be used as a wearing course component, since it has properties similar to a control mix that is typically used in wearing course construction.

ACS Style

Antonio José Tenza-Abril; José Miguel Saval; Victoria Eugenia García-Vera; Afonso Miguel Solak; Teresa Real Herráiz; José Marcos Ortega. Effects of Using Mine Tailings from La Unión (Spain) in Hot Bituminous Mixes Design. Applied Sciences 2019, 9, 272 .

AMA Style

Antonio José Tenza-Abril, José Miguel Saval, Victoria Eugenia García-Vera, Afonso Miguel Solak, Teresa Real Herráiz, José Marcos Ortega. Effects of Using Mine Tailings from La Unión (Spain) in Hot Bituminous Mixes Design. Applied Sciences. 2019; 9 (2):272.

Chicago/Turabian Style

Antonio José Tenza-Abril; José Miguel Saval; Victoria Eugenia García-Vera; Afonso Miguel Solak; Teresa Real Herráiz; José Marcos Ortega. 2019. "Effects of Using Mine Tailings from La Unión (Spain) in Hot Bituminous Mixes Design." Applied Sciences 9, no. 2: 272.