Sorptive testing of mortars with varying water-cement ratios

The article presents the results of studies on sorption performed on three samples of mortars with similar density of about 2,000 kg/m3. The tested mortars differed in their water-to-cement ratio. Three levels of w/c ratio were adopted that were respectively: 0.5; 0.55 and 0.6. The prepared mortars ... Ausführliche Beschreibung

1. Person: Stolarska Agata verfasserin
Weitere Personen: Ciborowski Szymon verfasserin
Quelle: In E3S Web of Conferences (01.01.2018)
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Format: Online-Artikel
Sprache: English
French
Veröffentlicht: 2018
Beschreibung: Online-Ressource
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  Creative Commons License Source: Directory of Open Access Journals (DOAJ).
Zusammenfassung: The article presents the results of studies on sorption performed on three samples of mortars with similar density of about 2,000 kg/m3. The tested mortars differed in their water-to-cement ratio. Three levels of w/c ratio were adopted that were respectively: 0.5; 0.55 and 0.6. The prepared mortars were cut into samples with a thickness of 1 cm, dried to constant weight at a temperature of 105°C and insulated on the side surface with silicone. The experiment was carried out at a temperature of 25°C and at six different levels of relative humidity φ ≈ 12, 33, 54, 76, 85, 98%. Relative humidity was provided by saturated solutions of the appropriate salts: LiCl (φ ≈ 12%), MgCl2 (φ ≈ 33%), Mg(NO3)2 (φ ≈ 53%), NaCl (φ ≈ 76%), KCl (φ ≈ 85%), K2SO4 (φ ≈ 98%). The adopted level of temperature and range of relative humidity meet the hygrothermal conditions which tend to affect the cement mortar in real life. The long-term measurement results were used to assess the behaviour of the tested mortars under various conditions of moisture and to determine the equilibrium sorptive humidity.
ISSN: 2267-1242

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