Listar por autor "Morales-Cantero, Alejandro"
Mostrando ítems 1-17 de 17
-
4D nanoimaging of early age cement hydration.
Shirani, Shiva; Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Santacruz-Cruz, Maria Isabel
; Diaz, Ana; Trtik, Pavel; Holler, Mirko; Rack, Alexander; Lukic, Bratislav; Brun, Emmanuel; Ruiz Salcedo, Inés; García-Aranda, Miguel Ángel[et al.] (Springer Nature, 2023-05-08)
Despite a century of research, our understanding of cement dissolution and precipitation processes at early ages is very limited. This is due to the lack of methods that can image these processes with enough spatial ... -
ANALYSIS OF BUILDING MATERIALS BY SYNCHROTRON X-RAY IMAGING
Shirani, Shiva; Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel[et al.] (-, 2021-01)
Building materials have complex hierarchical microstructures. The largest components are coarse aggregates with dimensions larger than a few centimetres and the smallest ones are the calcium silicate hydrate (C-S-H) gel ... -
Belite hydration at high temperature and pressure by in situ synchrotron powder diffraction
Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; Cuesta-Garcia, Ana Maria; Fraga-López, Edmundo; Shirani, Shiva; García-Aranda, Miguel Ángel[et al.] (2020-10-16)
Portland cements are currently used as Oil‐Well‐Cements for the sheath between the metal casing and the borehole. At high pressures and temperatures, the resulting C-S-H gel(s) is partly unstable and it can react to give ... -
C-S-H seeding activation of Portland and Belite cements: An enlightening in situ synchrotron powder diffraction study
Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Mazanec, Oliver; Borralleras, Pere; Weldert, Kai S.; Gastaldi, Daniela; Canonico, Fulvio; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2022-11)
C-S-H seeding in Portland cements is well known from basic scientific works and field applications. Moreover, this activation approach could be beneficial for low-CO2 cements under development where a general drawback is ... -
Cementos de arcillas calcinadas y caliza preparados en la Universidad de Málaga
Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Cuesta-Garcia, Ana Maria; Bernal, Isabel M.R.; Redondo-Soto, Cinthya; Morales-Cantero, Alejandro; Shirani, Shiva; Pérez-Bravo, Raquel; Franco-Duro, Francisco Ignacio; García-Mate, Marta; Salcedo, Inés R.; Leon Reina, Laura; García-Aranda, Miguel Ángel[et al.] (2022)
Adjuto documento -
Doble activación de cementos BYF (belita-ye’elemita-ferrita) y su efecto en pastas y morteros
Pérez-Bravo, Raquel; Morales-Cantero, Alejandro; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Torre, Ángeles G. de la (2022-06-30)
Los eco-cementos tipo BYF se postulan como una alternativa a los PC (Cementos Portland) por su menor demanda de caliza. Estos están principalmente constituidos por tres fases: Belita (-C2S o -Ca2SiO4), Ye’elemita (C4A3S ... -
Early hydration of belite-ye’elimite-ferrite cements: Role of admixtures
Pérez-Bravo, Raquel; Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles[et al.] (sciencedirect, 2023)
The effect of TIPA and CaCl2 on early hydration, i.e. 24 h, of a B-BYF cement has been studied by in situ synchrotron X-ray powder diffraction, calorimetry, thermal analysis, NMR, and rheological measurements of the pastes ... -
Effect of boron and water-to-cement ratio on the performances of laboratory prepared Belite-Ye'elimite-Ferrite (BYF) cements
Pérez-Bravo, Raquel; Morales-Cantero, Alejandro; Bruscolini, Marguerita; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel; Gomez-de-la-Torre, Maria de los Angeles[et al.] (2021)
The effect of superplasticiser, borax and the water-to-cement ratio on BYF hydration and mechanical strengths has been studied. Two laboratory-scale BYF cements—st-BYF (with -C2S and orthorhombic C4A3 S) and borax-activated ... -
In-situ synchrotron powder diffraction study: activation of Portland and Belite cements
Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (2022-05-31)
Portland cement (PC), whose main phase is alite (Ca3SiO5, C3S), is one of the most manufactured products in the world. However, cement industry is one of the major contributors for greenhouse gases (GHG) emissions. In the ... -
Influence of curing temperature on belite cement hydration: a comparative study with Portland cement
Shirani, Shiva; Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; P. Olbinado, Margie; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2021-05-24)
Belite cements (BCs) could be a more sustainable binder than Portland cements (PCs) but adequate knowledge of the hydration features has still to be built. In particular, the mild curing hydration temperature effects have ... -
Limestone calcined clay binders based on a Belite-rich cement
Redondo-Soto, Cinthya; Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Santacruz-Cruz, Maria Isabel; Gastaldi, Daniela; Canonico, Fulvio; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2023)
Portland-based Limestone Calcined Clay Cements, LC3, are receiving considerable attention because the CO2 footprint can be reduced up to 40 %. Here, we report a related family: Belite-rich-LC3. These blends are expected ... -
Pair distribution function as a tool to characterize C-S-H gels
Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel (2021)
Portland cement (PC) is the most manufactured product in the world. However, cement industry is one of the major contributors for greenhouse gas emissions. For every ton of grey PC clinker, around 0.87 CO2 tons are released ... -
Phase-selective degree of hydration at setting: An in situ synchrotron diffraction study
Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Santacruz-Cruz, Maria Isabel; García-Aranda, Miguel Ángel; Gomez-de-la-Torre, Maria de los Angeles (Elsevier, 2022-03)
Setting of Portland cements is still not well understood. Previous studies used techniques that analyse the pastes as a whole to correlate setting times with degree of hydration. Here, in-situ synchrotron X-ray diffraction ... -
Portland and belite cement hydration acceleration by C-S-H seeds with variable w/c ratios
Mazanec, Oliver; Borralleras, Pere; Weldert, Kai S.; Gastaldi, Daniela; Canonico, Fulvio; Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel[et al.] (Materials, 2022)
The acceleration of very early age cement hydration by C-S-H seeding is getting attention from scholars and field applications because the enhanced early age features do not compromise later age performances. This acceleration ... -
Portland and Belite Cement Hydration Acceleration by C-S-H Seeds with Variable w/c Ratios
Morales-Cantero, Alejandro; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Mazanec, Oliver; Borralleras, Pere; Weldert, Kai S.; Gastaldi, Daniela; Canonico, Fulvio; Aranda, Miguel A.G.[et al.] (IOAP-MPDI, 2002-05-16)
The acceleration of very early age cement hydration by C-S-H seeding is getting attention from scholars and field applications because the enhanced early age features do not compromise later age performances. This acceleration ... -
Processing and characterisation of Calcium SulfoAluminate (CSA) eco-cements coated with a hybrid organo-inorganic material for photocatalytic applications
Morales-Cantero, Alejandro; Cabeza-Diaz, Aurelio; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel (2015-07-27)
On the one hand, Calcium SulfoAluminate (CSA) eco-cements are receiving increasing attention since their manufacture produces up to 40% less CO2 than ordinary Portland cement (OPC). In addition, they show interesting ... -
Recent Advances in C-S-H Nucleation Seeding for Improving Cement Performances
Cuesta-Garcia, Ana Maria; Morales-Cantero, Alejandro; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel (MDPI, 2023)
Reducing cement CO2 footprint is a societal need. This is being achieved mainly by replacing an increasing amount of Portland clinker by supplementary cementitious materials. However, this comes at a price: lower mechanical ...