Papers

@article{Puertas201822,

title = {Alkali-activated slag concrete: Fresh and hardened behaviour},

author = {Francisca Puertas and Belén González-Fonteboa and Iris González-Taboada and María M. Alonso López and Manuel Torres-Carrasco and Gemma Rojo-López and Fernando Martínez-Abella},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030679824&doi=10.1016%2fj.cemconcomp.2017.10.003&partnerID=40&md5=55e3f2fd798b6078f508e2db2e4c24b7},

doi = {10.1016/j.cemconcomp.2017.10.003},

year  = {2018},

date = {2018-01-01},

urldate = {2018-01-01},

journal = {Cement and Concrete Composites},

volume = {85},

pages = {22 – 31},

publisher = {Elsevier Ltd},

abstract = {The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology. Bingham models afforded a good fit to all the OPC and AAS concretes. In OPC and NaOH-activated AAS concretes, longer mixing had an adverse effect on rheology while improving hardened performance only slightly. In WG-AAS concrete, longer mixing times, improved mechanical properties and also rheological behaviour was enhanced, in which those conditions were required to break down the microstructure. Longer mixing raised thixotropy in OPC and NaOH-activated AAS concretes, but lowered the value of this parameter in waterglass-activated slag concrete. © 2017 Elsevier Ltd},

note = {Cited by: 201; All Open Access, Green Open Access},

keywords = {Alkali activated slags, Alkali-activated slag concretes, Alkaline activation, Alkaline activators, Atomic absorption spectrometry, Bingham model, Bins, Blast furnaces, Concrete mixing, Concretes, Elasticity, Hardened behaviour, Hardening, Key determinants, Mixing, Rheological behaviour, Rheology, Slags},

pubstate = {published},

tppubtype = {article}

}

@article{González-Taboada20171,

title = {Tools for the study of self-compacting recycled concrete fresh behaviour: Workability and rheology},

author = {Iris González-Taboada and Belén González-Fonteboa and Javier Eiras-López and Gemma Rojo-López},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019157098&doi=10.1016%2fj.jclepro.2017.04.045&partnerID=40&md5=dc483461bc80b8981beee59d6b2ab36b},

doi = {10.1016/j.jclepro.2017.04.045},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {Journal of Cleaner Production},

volume = {156},

pages = {1 – 18},

abstract = {This work studies the fresh behaviour of self-compacting recycled concrete (SCRC) with different replacement percentages of recycled concrete coarse aggregate (20, 50 and 100%). To control the high absorption of recycled aggregate, three different mixing methods are also used in each studied concrete: M1 (dry aggregate and extra water), M2 (pre-soaked aggregate) and M3 (aggregate with a 3% of natural moisture and extra water). The fresh-state properties are measured with empirical and rheological tests, both carried out at 15, 45 and 90 min from the water-cement contact. Results obtained lead to conclude that rheology is the best tool to control fresh state behaviour of SCRC mixes and that Bingham 5-lowest is the suitable model to describe their rheological behaviour. Additionally, it has been concluded that the best method to produce SCRC is to compensate the recycled aggregate absorption during mixing using an extra quantity of water. With this method, self-compacting behaviour can be maintained with all replacement percentages until 45 min, and even until 90 min when the replacement ratio does not exceed 50%. Moreover, the use of the recycled coarse aggregate with a previous moisture content involves a greater difficulty to control workability and rheology than its use in dry-state condition. © 2017 Elsevier Ltd},

note = {Cited by: 88},

keywords = {Aggregates, Concrete mixing, Concretes, Elasticity, Fresh behaviour, Mechanical properties, Mixing, Moisture, Recycled aggregates, Recycled coarse aggregate, Recycled concrete coarse aggregate, Recycled concretes, Recycling, Replacement ratio, Rheological behaviour, Rheology, Self compacting concrete, Water absorption, Workability},

pubstate = {published},

tppubtype = {article}

}

@article{Pérez2013463,

title = {Genetic programming to improvement FIB model bond and anchorage of reinforcing steel in structural concrete},

author = {Juan Luis Pérez-Ordoñez and Ismael Vieito and Juan R. Rabuñal-Dopico and Fernando Martínez-Abella},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880051047&doi=10.1007%2f978-3-642-38679-4_46&partnerID=40&md5=8c465cefe68f516db1ae8015be1b825b},

doi = {10.1007/978-3-642-38679-4_46},

issn = {03029743},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},

volume = {7902 LNCS},

number = {PART 1},

pages = {463-470},

abstract = {Starting from the FIB database, this work is aimed to analyze the current equations which predict the main datum that can be provided by bond tests: the ultimate bar stress when the failure is reached. Furthermore, Genetic Programming (GP) techniques are also applied in order to enhance the expression of the FIB, which achieves the best adjustment so far, giving rise to the new Model Code 2010. The final result shown is a highly predictive equation. The results are compared with those included in the Model Code and it is showed the influence of the main variables on the phenomenon (concrete strength, yield strength of steel, concrete cover, transverse reinforcement and diameter of the bar). © 2013 Springer-Verlag Berlin Heidelberg.},

note = {cited By 2},

keywords = {Bond test; Concrete cover; Concrete strength; Current equation; Predictive equations; Reinforcing steels; Structural concretes; Transverse reinforcement, Concretes, Genetic programming; Neural networks; Reinforced concrete},

pubstate = {published},

tppubtype = {article}

}

@article{GonzálezFonteboa201053,

title = {Shear friction capacity of recycled concretes [Cortante-fricción de los hormigones reciclados]},

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

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956805025&doi=10.3989%2fmc.2010.49708&partnerID=40&md5=18e066c38e886d8796cc9af04ec9cb7e},

doi = {10.3989/mc.2010.49708},

issn = {04652746},

year  = {2010},

date = {2010-01-01},

urldate = {2010-01-01},

journal = {Materiales de Construccion},

volume = {60},

number = {299},

pages = {53-67},

abstract = {The aim of this research was to determine the behavior of recycled concrete in response to the phenomenon of shear transfer. To perform it, a conventional control concrete and a concrete with 50% recycled coarse aggregate were designed. An additional goal was to shed light on how this behavior is modified with a pozzolanic addition, silica fume. Therefore, two types of concrete were designed, a conventional and a recycled concrete, both made with 8% of silica fume. In conclusion, a reduction of shear friction capacity was observed in recycled concretes, considerably higher in the case of the specimen without reinforcement. The addition of silica fume improved the behavior of recycled concretes. The results obtained were compared with the formulations of the different authors. In all cases, these were found to be conservative. However, the safety margins offered by recycled concretes are lower than those obtained with conventional concretes.},

note = {cited By 11},

keywords = {Concretes, Conventional concrete; Conventional control; Pozzolanic addition; Recycled aggregates; Recycled coarse aggregate; Recycled concretes; Shear friction; Shear friction capacity, Friction; Recycling; Silica fume; Strain; Tribology},

pubstate = {published},

tppubtype = {article}

}