Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The role of aggregate characteristics on the performance optimization of high hydraulicity restoration mortars
https://orcid.org/0000-0003-4274-0392
HighlightsEnhanced packing density resulted in water/binder ratio reduction up to 26%.Optimized packing density allows reduced binder content for the same strength level.Tailored properties of restoration mixtures enhance performance and compatibility.
AbstractPerformance characteristics of mortars are governed by the type of binder, type and grain size distribution of aggregates and their mix proportions. Aiming at parametric optimization of NHL restoration mortars, this study discusses the effect of physical and geometrical properties of aggregates on fresh and hardened mortars, tested after 28days of curing. Four different sands 0/2mm were studied and ten mixtures were prepared with natural hydraulic lime (NHL5). The effect of gradation, packing density and shape of aggregates was studied, versus the mechanical properties and porosity. The results highlight the crucial role of the morphological parameters of aggregates, especially of packing density, on the development of microstructure and the mechanical performance of mortars. The contribution of aggregates to tailoring and controlling the mechanical and microstructural properties of repair mortars is also demonstrated in this work. To this end, it was proved that the mechanical performance of mortars is controlled by the combination of both binder amount and packing density of the aggregates.
The role of aggregate characteristics on the performance optimization of high hydraulicity restoration mortars
https://orcid.org/0000-0003-4274-0392
HighlightsEnhanced packing density resulted in water/binder ratio reduction up to 26%.Optimized packing density allows reduced binder content for the same strength level.Tailored properties of restoration mixtures enhance performance and compatibility.
AbstractPerformance characteristics of mortars are governed by the type of binder, type and grain size distribution of aggregates and their mix proportions. Aiming at parametric optimization of NHL restoration mortars, this study discusses the effect of physical and geometrical properties of aggregates on fresh and hardened mortars, tested after 28days of curing. Four different sands 0/2mm were studied and ten mixtures were prepared with natural hydraulic lime (NHL5). The effect of gradation, packing density and shape of aggregates was studied, versus the mechanical properties and porosity. The results highlight the crucial role of the morphological parameters of aggregates, especially of packing density, on the development of microstructure and the mechanical performance of mortars. The contribution of aggregates to tailoring and controlling the mechanical and microstructural properties of repair mortars is also demonstrated in this work. To this end, it was proved that the mechanical performance of mortars is controlled by the combination of both binder amount and packing density of the aggregates.
The role of aggregate characteristics on the performance optimization of high hydraulicity restoration mortars
https://orcid.org/0000-0003-4274-0392
HighlightsEnhanced packing density resulted in water/binder ratio reduction up to 26%.Optimized packing density allows reduced binder content for the same strength level.Tailored properties of restoration mixtures enhance performance and compatibility.
AbstractPerformance characteristics of mortars are governed by the type of binder, type and grain size distribution of aggregates and their mix proportions. Aiming at parametric optimization of NHL restoration mortars, this study discusses the effect of physical and geometrical properties of aggregates on fresh and hardened mortars, tested after 28days of curing. Four different sands 0/2mm were studied and ten mixtures were prepared with natural hydraulic lime (NHL5). The effect of gradation, packing density and shape of aggregates was studied, versus the mechanical properties and porosity. The results highlight the crucial role of the morphological parameters of aggregates, especially of packing density, on the development of microstructure and the mechanical performance of mortars. The contribution of aggregates to tailoring and controlling the mechanical and microstructural properties of repair mortars is also demonstrated in this work. To this end, it was proved that the mechanical performance of mortars is controlled by the combination of both binder amount and packing density of the aggregates.
The role of aggregate characteristics on the performance optimization of high hydraulicity restoration mortars
Amenta, Maria (Autor:in) / Karatasios, Ioannis (Autor:in) / Maravelaki- Kalaitzaki, Pagona (Autor:in) / Kilikoglou, Vassilis (Autor:in)
Construction and Building Materials ; 153 ; 527-534
14.07.2017
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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