Publicacións

@article{ghorbel_effect_2023,

title = {Effect of 10% recycled sands from various storage sites on the mortar’s properties},

author = {Elhem Ghorbel and George Wardeh and Belén González-Fonteboa},

url = {https://doi.org/10.1080/19648189.2023.2169766},

doi = {10.1080/19648189.2023.2169766},

issn = {1964-8189},

year  = {2023},

date = {2023-10-01},

urldate = {2026-08-13},

journal = {European Journal of Environmental and Civil Engineering},

volume = {27},

number = {14},

pages = {4067–4085},

publisher = {Taylor & Francis},

abstract = {This study investigates the effects of using 10% of recycled sand in mortars. Using the concrete equivalent mortar approach, the reference mortar was developed from a flowable natural aggregate concrete with a C35/45 strength class. Five mortars were manufactured by replacing 10% of the natural sand with recycled sand from various recycling platforms while keeping the formulation parameters constant. The fresh state results showed that recycled mortar had an increased air content, which increased yield stress and viscosity. In addition, mortars containing 10% recycled sand showed a faster rate of flow loss over time. There was no difference between the materials in the hardening state with regard to the evolution of the hydration heat or the setting time. The relationship between the qualities of mortars and sands revealed that the air content depends on the sand’s fineness and the presence of fines with a diameter less than 63 µm. A relatively small increase in porosity and water absorption capacity was observed with a decrease in the compressive and flexural strength with no obvious change in the elastic modulus. The total shrinkage was revealed to depend on the fines content and decreases when the fines content increases.},

keywords = {Mechanical properties, Mortar, Physical properties, Recycled sand, Workability},

pubstate = {published},

tppubtype = {article}

}

@article{gonzalez-fonteboa_influence_2021,

title = {Influence of the mixing procedure on the fresh state behaviour of recycled mortars},

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

url = {https://www.sciencedirect.com/science/article/pii/S0950061821020250},

doi = {10.1016/j.conbuildmat.2021.124266},

issn = {0950-0618},

year  = {2021},

date = {2021-09-01},

urldate = {2021-09-01},

journal = {Construction and Building Materials},

volume = {299},

pages = {124266},

abstract = {The effect of two different mixing protocols on the fresh-state behaviour of self-compacting mortars with and without recycled sand was compared. For this purpose, the mortar mixes were designed considering three solid volume fractions, while maintaining the water to cement ratio and superplasticiser dosage constant. The results conclude that the inclusion of recycled sand harmfully affects the rheological behaviour of the mortars and this effect can be mitigated using mixing protocols with longer mixing times and delayed admixture addition times. Finally, a rheograph was developed to explain the expectable changes in a conventional mix when recycled sand is incorporated, the solid volume fraction is varied and changes are applied to the mixing procedure.},

keywords = {Delayed admixture addition time, Fine particles, Mixing time, Recycled sand, Rheology},

pubstate = {published},

tppubtype = {article}

}