Papers

@article{sanchez-mendieta_relationships_2024,

title = {Relationships between density, porosity, compressive strength and permeability in porous concretes: Optimization of properties through control of the water-cement ratio and aggregate type},

author = {Carlos Sánchez-Mendieta and Juan José Galán-Díaz and Isabel Martínez-Lage},

url = {https://www.sciencedirect.com/science/article/pii/S2352710224024264},

doi = {10.1016/j.jobe.2024.110858},

issn = {2352-7102},

year  = {2024},

date = {2024-11-01},

urldate = {2024-11-01},

journal = {Journal of Building Engineering},

volume = {97},

pages = {110858},

abstract = {In this study, the relationships between density, porosity, compressive strength, and permeability in porous concretes were examined. Coarse aggregates, sourced both from natural riverbeds and through crushing, were used with water-to-cement ratios of 0.35, 0.38, and 0.41. Direct correlations were found between density and compressive strength, while porosity was inversely related to strength. Additionally, a direct correlation was observed between porosity and permeability. Adhering to the ACI 522R-10 standards resulted in compressive strengths approaching 12 MPa and permeabilities ranging from 13.5 to 26.1 mm s⁻1. These findings emphasize the importance of aggregate type and size in optimizing porous concrete properties without requiring fine aggregates or additives. Discrepancies with previous studies are attributed to variations in materials, mix designs, and testing methods. Thus, precise control of the water-to-cement ratio and careful aggregate selection are crucial for tailoring porous concrete to specific applications.},

keywords = {Compressive strength, Density, Permeability, Porosity, Porous concrete},

pubstate = {published},

tppubtype = {article}

}

@article{bello_constitutive_2022,

title = {Constitutive behaviour of masonry prisms using a full-field measurement technique},

author = {Ismail Bello and George Wardeh and Belén González-Fonteboa and Fernando Martínez-Abella and Elhem Ghorbel},

url = {https://www.sciencedirect.com/science/article/pii/S2352012422010475},

doi = {10.1016/j.istruc.2022.11.008},

issn = {2352-0124},

year  = {2022},

date = {2022-12-01},

urldate = {2022-12-01},

journal = {Structures},

volume = {46},

pages = {1726–1736},

abstract = {To obtain analytical models for the compressive behaviour of masonry structures, it is crucial to accurately measure the compressive strengths of its constituents, i.e., brick and mortar. The mechanical properties and the stress-strain relationship under uniaxial compression are essential for thoroughly investigating and evaluating masonry structures. The present work aims to validate a non-contact measuring technique for obtaining full-scale strain and failure patterns and investigate joint mortar composition's effect on masonry behaviour. Forty masonry prisms were manufactured in this study using two distinct types of brick and five different types of mortar varying according to cement and lime contents. The results showed that 2D Digital Image Correlation (DIC) could generate full-strain assessments of masonry prisms, resulting in a full-scale stress-strain analysis. It was also found that, in the post-peak region, prisms with lower cement content exhibit a more ductile behaviour with strain localisation at the joint mortar level. Based on current experimental results and data from the literature, new analytical relationships were presented to predict masonry mechanical properties and masonry complete stress-strain compressive behaviour.},

keywords = {Analytical model, Compressive strength, Digital image correlation (DIC), Masonry, Mechanical properties, Stress-Strain law},

pubstate = {published},

tppubtype = {article}

}

@article{martinez-garcia_carbonation_2020,

title = {Carbonation evolution of lime putty coatings with mussel shell aggregate},

author = {Carolina Martínez-García and Belén González-Fonteboa and Diego Carro-López and Fernando Martínez-Abella},

url = {https://www.sciencedirect.com/science/article/pii/S095006182032170X},

doi = {10.1016/j.conbuildmat.2020.120165},

issn = {0950-0618},

year  = {2020},

date = {2020-12-01},

urldate = {2026-08-06},

journal = {Construction and Building Materials},

volume = {264},

pages = {120165},

abstract = {The carbonation process is studied from young ages up to 2 years in mortars with fine mussel shell aggregate. Mussel shell aggregate affects lime mortars due to its shape (angular and flaky) and texture (smooth), and also its microstructure consisting of 2% organic matter in the form of protein and polysaccharides (chitin). Its effect is analysed in pore structure, microstructure by SEM, carbonation by phenolphthalein, and mechanical strength by means of compressive strength and ultrasounds. Conclusions show that the use of mussel shell aggregate delays carbonation at young ages (28 days) while increasing the total carbonated area at longer ages (1 and 2 years). These two different trends can be seen in all of the properties analysed.},

keywords = {Ageing, Air lime, Compressive strength, Pore size distribution, Porosity, Ultrasounds},

pubstate = {published},

tppubtype = {article}

}

@article{Rojo-López2020,

title = {Quaternary blends of portland cement, metakaolin, biomass ash and granite powder for production of self-compacting concrete},

author = {Gemma Rojo-López and Sandra Nunes and Belén González-Fonteboa and Fernando Martínez-Abella},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084552139&doi=10.1016%2fj.jclepro.2020.121666&partnerID=40&md5=432f2c1cfd49358288f98b4f03788f9d},

doi = {10.1016/j.jclepro.2020.121666},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Journal of Cleaner Production},

volume = {266},

publisher = {Elsevier Ltd},

abstract = {Given the rising societal pressure towards sustainable waste management and resource efficiency, in a more circular economy, an increased use and diversification of supplementary cementitious materials (SCM) will be necessary to achieve the CO2 mitigation goals. The current study addresses the development of self-compacting concrete, replacing part of the cement (the primary source of CO2 emissions) by metakaolin and wastes derived from two industrial sectors operating in the “Galicia–North of Portugal Euroregion”: wood manufacturing and natural stone quarrying. A study was carried out at the mortar level to investigate the effect of the mix design variables on several engineering properties of the self-compacting concrete. Statistically designed experiments reveal that an increase in water/powder volume ratio has a dominant effect on the fresh state properties, whereas the water/cement weight ratio has a dominant effect on the hardened state properties. A like-for-like comparison of the proposed quaternary blends and previously studied binary/ternary blends indicates that these mixtures exhibit improved self-compacting ability, greater compressive strength, and can offer interesting opportunities to reduce the unit cost and environmental impact of self-compacting concrete per m3. Four different mortar mixtures were optimised to achieve excellent self-compacting ability yet with distinct compressive strength levels at 28 days (65, 70, 75, and 80 MPa). A single measure of the material efficiency is proposed herein to reflect the engineering properties improvement (workability, compressive strength, and durability) over its economic (unit cost) and environmental impact. © 2020 Elsevier Ltd},

note = {Cited by: 47; All Open Access, Green Open Access},

keywords = {Binary mixtures, Carbon dioxide, Cement industry, Circular economy, Compressive strength, Concrete industry, Concrete mixtures, Concrete products, Cost engineering, Designed experiments, Efficiency, Engineering properties, Industrial emissions, Industrial sector, Material efficiency, Mortar, Portland cement, Resource efficiencies, Self compacting concrete, Supplementary cementitious material, Sustainable waste management, Waste management},

pubstate = {published},

tppubtype = {article}

}

@article{Eiras-López2017,

title = {Bond behavior of recycled concrete: Analysis and prediction of bond stress-slip curve},

author = {Javier Eiras-López and Sindy Seara-Paz and Belén González-Fonteboa and Fernando Martínez-Abella},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020943186&doi=10.1061%2f%28ASCE%29MT.1943-5533.0002000&partnerID=40&md5=291d9183e664cf053efd52e8d278a903},

doi = {10.1061/(ASCE)MT.1943-5533.0002000},

issn = {08991561},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {Journal of Materials in Civil Engineering},

volume = {29},

number = {10},

publisher = {American Society of Civil Engineers (ASCE)},

abstract = {This paper studies the bond stress-slip curve of recycled concretes and the influence of recycled coarse aggregate, which leads to the determination of bond behavior at serviceability. In order to perform this analysis, a study of the compressive strength of the recycled aggregate concretes is required, due to the relationship between the bond strength and the mean compressive strength. Two series of concretes are designed with different water to cement ratios (0.50 and 0.65) and four different replacement percentages (0, 20, 50, and 100%). The experimental program tests cubic specimens through 144 compressive strength tests and 160 pull-out tests at different ages, from 3 to 365 days. The results show that replacement ratio significantly influences concrete properties related to the compressive strength and bond behavior. Two functions are developed to predict time-dependent compressive strength and bond stress-slip curve of recycled concrete, both based on the International Federation for Structural Concrete Model Code expressions for conventional concrete. © 2017 American Society of Civil Engineers.},

note = {cited By 30},

keywords = {aggregate; compressive strength; concrete; prediction; slip; stress-strain relationship, Aggregates; Bond strength (materials); Concrete aggregates; Concretes; Recycling; Software testing, Bond behavior; Bond stress; Recycled aggregate concrete; Recycled coarse aggregate; Time dependent, Compressive strength},

pubstate = {published},

tppubtype = {article}

}