Publicacións

@article{adema_flexural_2024,

title = {Flexural performance of full-scale two-span Nail-Laminated Timber Concrete composite slabs},

author = {Andrés Adema and Matías F. Chacón and Hernán Santa María and Alexander Opazo-Vega and Euro Casanova and Pablo Guindos-Bretones},

url = {https://www.sciencedirect.com/science/article/pii/S0950061824016696},

doi = {10.1016/j.conbuildmat.2024.136528},

issn = {0950-0618},

year  = {2024},

date = {2024-06-01},

urldate = {2026-04-20},

journal = {Construction and Building Materials},

volume = {432},

pages = {136528},

abstract = {This study examines the flexural performance of six 9-m full-scale two-span Nail-Laminated Timber Concrete (NLTC) composite slabs. The slabs were made with lumber beams edge-joined with double nailing, end-joined with butt joints, and the reinforced concrete topping connected with a set of notches, inclined screws, or a combination of both. The multi-span configuration of slabs reduces their deflections simply and effectively. Five-point monotonic bending tests were considered for all slabs. Before full-scale slabs, compressive and tensile pull-out tests of Timber-Concrete Composite (TCC) shear connections were performed, including notches and inclined screws. Tensile pull-out tests of shear connections were also included to emulate the negative bending moments that occur in the middle of the slabs. Failure modes, load–mid-span deflection relation, bending stiffness, and timber-concrete slip were evaluated for all slabs. A detailed 3D micro-Finite Element (FE) model of the shear connections was built in ANSYS software, whereas a macro-FE model of NLTC slabs was made in SAP2000, demonstrating a good fit for the timber-concrete interaction and the load-carrying capacity of the composite slab at the serviceability range. Moreover, an analytical elastic TCC beam with the Girhammar method was assessed and demonstrated as more precise than the traditional γ-method. Finally, an accurate prediction of the numerical and analytical (Girhammar) models for the bending stiffness at service loads up to 30% of capacity is observed, with errors in a range of 2–23% and 9–74%, respectively.},

keywords = {Five-point bending tests, Flexural performance, Hybrid timber-concrete building, Multi-span tests, Nail-laminated timber, Notched and screwed connections, Pull-out tests, Timber-concrete composite},

pubstate = {published},

tppubtype = {article}

}

@article{seara-paz_deformation_2022,

title = {Deformation recovery of reinforced concrete beams made with recycled coarse aggregates},

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

url = {https://www.sciencedirect.com/science/article/pii/S0141029621015856},

doi = {10.1016/j.engstruct.2021.113482},

issn = {0141-0296},

year  = {2022},

date = {2022-01-01},

urldate = {2022-01-01},

journal = {Engineering Structures},

volume = {251},

pages = {113482},

abstract = {The purpose of this research is to analyse the long-term deformations of reinforced concrete beams made of recycled coarse aggregates (RCA), using four different replacement ratios, 0%, 20%, 50% and 100%. For said purpose, three different loading stages were carried out: firstly, loading and sustained load for 1300 days, secondly, unloading and recovery where the deformations were registered over a one year period, and lastly, testing the concrete beams up to failure in order to analyse the effect of recycled aggregates on pre-cracked concrete members. The results led to the analysis of deformations under sustained load, as well as those produced after removing the load and the performance of pre-cracked members, while identifying the effect of recycled coarse aggregates on concrete performance in terms of plastic deformation, recoverability and concrete stiffness, and also on structural design.},

keywords = {Concrete stiffness, Cracked analysis, Deformation recovery, Flexural performance, Long-term deflection recovery, Recoverability, Recycled aggregate concrete},

pubstate = {published},

tppubtype = {article}

}