Engineering Geology for Society and Territory - Volume 8

Dulcet, Jordi Corominas; Margottini, Claudio; Crosta, Giovanni B.; Frattini, Paolo; Gigli, Giovanni; Iwasaky, Ioshinori; Lollino, Giorgio; Μαρίνος, Π.; Scavia, Claudio; Sonnessa, Alberico; Spizzichino, Danielle; Giordan, Daniele

doi:10.1007/978-3-319-09408-3

Cited by 27 publications

(7 citation statements)

References 124 publications

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“…As stated above, the type of stone substrate plays the most significant role in both strength and deformability. Other authors have also pointed out that different fabrics and mineral compositions significantly influence the efficiency of stone consolidants [80,81]. Wheeler addressed the issue of structure by trying to consolidate larger quartz grains, which remained unconsolidated despite their chemical affinity [24] (pp.…”

Section: Resultsmentioning

confidence: 99%

Efficiency and Compatibility of Selected Alkoxysilanes on Porous Carbonate and Silicate Stones

et al. 2019

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This study compares the consolidation efficiency and compatibility of three selected alkoxysilanes on two porous carbonate and silicate substrates. Emphasis was given to artificially induced microstructural defects and subsequent restoration of mechanical and physical properties. Two newly engineered formulations (1) a TiO2 modified tetraethyl-orthosilicate in isopropanol with 70% active content and (2) a TiO2 modified alkyl-trialkoxysilane in isopropanol with 75% active content were compared to a commercial product (3), a solvent free tetraethyl-orthosilicate with 99% active content. Treatments were evaluated by scanning electron microscopy, mercury intrusion porosimetry, colour impact and their effect on dynamic modulus of elasticity, splitting tensile- and flexural strengths, capillary water absorption and water vapour permeability. A key outcome was that mechanical strength gain induced by treatments is primarily governed by a stone’s texture and microstructure, and secondarily by the gel deposition rate of consolidants. Likewise, the kinetics of the gel-forming reaction during curing is dependent not only on the product but also on the substrate. Therefore, the moisture related properties and the visual impact develop during time. There is no general trend on how it evolves in time, which can lead to incorrect interpretations of treatment compatibility. The results prove that wide-ranging treatment performance is obtained when applying the same products on different substrates.

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Section: Resultsmentioning

confidence: 99%

Efficiency and Compatibility of Selected Alkoxysilanes on Porous Carbonate and Silicate Stones

et al. 2019

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“…As far as the hydrology is concerned, the shallow aquifer is characterized by a regional groundwater recharge, mainly due to the water coming from the Ivrea morainic amphitheatre (Gianotti et al, 2015) and from rice paddies during their flooding. The local recharge is related to surface water, such as that of the Dora Baltea River, and several artificial canals in the investigated area; the precipitation effect is instead rather negligible.…”

Section: Geological and Hydrogeological Frameworkmentioning

confidence: 99%

Radionuclide transport in shallow groundwater

Testoni

Levizzari

Salve

2015

Progress in Nuclear Energy

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“…The materials that were used in this paper were selected on their homogeneity, as this should minimize the chance of large-scale features being left out μCT analysis by subsampling prior to this analysis. A first group of materials were three varieties of the Bentheimer sandstone: the red Bentheim variety and two types of the Gildehaus variety, called the 'regular' and the 'porous' variety (Dubelaar and Nijland, 2015). As the names suggest, the main difference between these two types is the slightly higher porosity in the porous variety compared to traditional Bentheimer sandstone.…”

Section: Introductionmentioning

confidence: 99%