Journal Article10.4028/WWW.SCIENTIFIC.NET/AMR.133-134.259
Commercial Ready-Mixed Mortars for the Conservation of Cultural Heritage: Characterization and Preliminary Durability Test
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TL;DR: In this paper, the authors investigated the relationship between compositional and microstructural features and damage of ready-mixed mortars based on NHL binders, together with the preliminary laboratory tests to assess the durability of mortar specimens to salt decay.
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Abstract: Historic masonries of the cultural heritage are aged and heterogeneous systems which are subjected to long-term exposition to the external environment. In such conditions, they can easily come in to contact with a consistent range of damaging agents, including water and salts sources. The related salt-induced damage is widely considered as one of the most dangerous decay process for their preservation. Conservative operations become therefore necessary and are performed with new materials that must fulfil specific requirements regarding their compatibility with the original ones and their resistance to damaging agents, especially in term of salt-resistance. The use of ready-mixed mortars in the restoration field has become a common practice and the number of commercial products currently available in the market is increasing. The present work reports the investigation on four types of ready-mixed mortars based on NHL binders and on two commercial NHL binders, together with the preliminary laboratory tests to assess the durability of mortar specimens to salt decay. The investigation provided useful information on the relationship between compositional and microstructural features and damage.
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Citations
Porosity of mortars. RILEM TC COM Characterisation of old mortars with respect to their repair.
Thomson
- 01 Jan 2006
TL;DR: In this paper, a characterisation of old mortars with respect to their repair is given, based on the characteristic of the mortars' porosity and their repair properties, and the number of mortars required to repair.
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Amination of black liquor and the application in the ready-mixed wet mortar.
TL;DR: The results showed that ABL could be used as an effective ready-mixed wet mortar admixture and alleviated the pollution of BL.
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Behavior to Salt Crystallization of Repointing by Ready-Mix Mortars: Experimental Data and Application of a Probabilistic Model
Luigia Binda,Elsa Garavaglia,Cristina Tedeschi +2 more
- 01 Jan 2013
TL;DR: In this paper, a procedure based on salt crystallization tests is described and the development of a simple probabilistic damage model is introduced to investigate durability of these materials, and the eventual damage that they induce at the interface mortar/brick.
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Investigation of commercial ready-mixed mortars for the architectural heritage
Davide Gulotta,Lucia Toniolo,Luigia Binda,Cristina Tedeschi,R.P.J. Van Hess,Timo G. Nijland +5 more
- 01 Jan 2009
TL;DR: In this article, the results of the investigation of four commercial ready-mixed mortars based on NHL binders are reported, and the mineralogical composition of each product has been evaluated by XRD and polarization-and-fluorescence microscopy (PFM).
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TL;DR: In this article, the thermodynamics of real solutions for sodium sulfate and sodium chloride have been investigated and it was shown that dissolution of its anhydrate produces supersaturations with respect to its decahydrate capable of generating tensile hoop stresses on the order of 10-20 MPa, largely in excess of the tensile strength of almost all stones.
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Salt Weathering on Buildings and Stone Sculptures
Lisbeth M. Ottosen,Inge Rörig-Dalgaard,Poul Klenz Larsen,Isabelle Brajer,Peder Bollingtoft,Mette Marciniak,Maja Svane +6 more
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TL;DR: In this paper, a method for electrokinetic desalination of historic Portuguese tiles with and without mortar from the tile bed is presented. But the focus is on removal of salts over interphases between glaze/biscuit and biscuit/mortar.
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•Journal Article
RILEM TC 167-COM: Characterisation of old mortars with respect to their repair: Investigative methods for the characterisation of historic mortars - : Part 1 Mineralogical characterisation
TL;DR: In this article, the methode la plus simple est la dissolution ou separation par acides du liant attache aux granulats ; cette methode permet de determiner the composition chimique de liant soluble dans l'acide and, apres separation, fournit des informations sur le granulat du mortier.
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Compatibility of materials used for repair of masonry buildings: research and applications
Luigia Binda,Antonella Elide Saisi,Cristina Tedeschi +2 more
- 01 Jan 2006
TL;DR: In this paper, the main repair techniques applied to the repair of stone masonry and their effectiveness are described and critically analyzed, as well as their effectiveness in the case of grout injection or wall jacketing failures due to incompatibility with the construction technique of the walls.
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