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{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{martinez-garcia_design_2019,

title = {Design and properties of cement coating with mussel shell fine 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/S0950061819311006},

doi = {10.1016/j.conbuildmat.2019.04.211},

issn = {0950-0618},

year  = {2019},

date = {2019-08-01},

urldate = {2026-08-06},

journal = {Construction and Building Materials},

volume = {215},

pages = {494–507},

abstract = {The production of farmed mussels amounts to millions of tonnes across over 40 countries. Shell waste resulting from this production has a very significant environmental impact. In Galicia, mussel shell waste is transformed, using low impact heat treatment, into a by-product that can be used as an aggregate. This research investigates cement-coating mortars where conventional aggregate is partially replaced with mussel shell aggregate. Reference mortars and mortars with mussel shell sand replacing conventional sand at different rates: 25%, 50% and 75% have been tested. Results show the feasibility of mussel shell in cement coatings at an optimal replacement rate of 25% of the conventional aggregate.},

keywords = {Cement coating, microstructure, Mussel shell, Porosity, Water vapour permeability, Workable life progression},

pubstate = {published},

tppubtype = {article}

}