Listar por autor "Holler, Mirko"
Mostrando ítems 1-8 de 8
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4D Early Age Cement Hydration Analysis by Ptychographic X-ray Computed Tomography and Machine Learning Segmentation
(2022-06)Cement manufacturing is responsible for ~7% of the anthropogenic CO2 emissions and hence, decreasing the CO2 footprint, in a sustainable, safe and cost-effective way, is a top priority. To fully understand the binder main ... -
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 ... -
Calcium aluminate cement conversion analysed by ptychographic nanotomography
Shirani, Shiva; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Diaz, Ana; Trtrik, Pavel; Holler, Mirko; García-Aranda, Miguel Ángel[et al.] (Elsevier, 2020-08-17)
Calcium aluminate cements are used for special applications but are nowadays banned for general structural purposes due to the calcium aluminate hydrate conversion, that has led, for concretes fabricated with high water ... -
Chemistry and Mass Density of Aluminum Hydroxide Gel in Eco-Cements by Ptychographic X-ray Computed Tomography
Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Trtik, Pavel; Da Silva, Julio C.; Diaz, Ana; Holler, Mirko; García-Aranda, Miguel Ángel[et al.] (ACS, 2017)
Eco-cements are a desirable alternative to ordinary Portland cements because of their lower CO2 footprints. Some ye’elimite-based ecocements are attracting a lot of interest. Understanding the reasons for the mechanical ... -
Hydration studies of ye’elimite by using Ptychographic X-ray nano-tomography
Cuesta-Garcia, Ana Maria; Da Silva, Julio C.; Diaz, Ana; Holler, Mirko; Gomez-de-la-Torre, Maria de los Angeles; García-Aranda, Miguel Ángel; Trtik, Pavel[et al.] (2015-06-26)
CSA (Calcium SulfoAluminate) cements may have variable compositions but all of them contain ye’elimite(Ca4Al6O12SO4). The manufacture of CSA cements is more environmentally friendly than that of ordinary Portland cements ... -
In situ hydration imaging study of a ye'elimite paste by ptychographic x-ray computed tomography
Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Trtik, Pavel; Da Silva, Julio C.; Cuesta-Garcia, Ana Maria; Holler, Mirko; García-Aranda, Miguel Ángel[et al.] (2017)
Eco-cements are a desirable alternative to ordinary Portland cements because of their lower CO2 footprints. For instance, the manufacture of Calcium SulfoAluminate (CSA) cements is more environmentally friendly than that ... -
Quantitative analysis of cementitious materials by X-ray ptychographic nanotomography
Shirani, Shiva; Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Da Silva, Julio C.; Karpov, Dmitry; Diaz, Ana; Holler, Mirko; Trtik, Pavel; G. Aranda, Miguel Ángel[et al.] (2021)
Cement manufacturing is responsible for ~7% of the anthropogenic CO2 emissions and hence, decreasing the CO2 footprint, in a sustainable, safe, and cost-effective way, is a top priority. It is also key to develop more ... -
Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomography
Cuesta-Garcia, Ana Maria; Gomez-de-la-Torre, Maria de los Angeles; Santacruz-Cruz, Maria Isabel; Diaz, Ana; Trtik, Pavel; Holler, Mirko; Lothenbach, Barbara; García-Aranda, Miguel Ángel[et al.] (IUCr, 2019)
Mortars and concretes are ubiquitous materials with very complex hierarchical microstructures. To fully understand their main properties and to decrease their CO2 footprint, a sound description of their spatially resolved ...