NDLI: Application of fresh mortar tests to poultices used for the desalination of historical masonry

Content Provider	Springer Nature Link
Author	Bourgès, Ann Vergès Belmin, Véronique
Copyright Year	2010
Abstract	An European enquiry revealed that workability and adhesion of poultices is the main criteria for conservators to select poultice recipe. The poultice needs first to adhere to the substrate and be easy to use and prepare before presenting a real effect on salt extraction. However, a procedure to test the consistency and workability of fresh poultices does not exist neither in practice nor is it documented. Users usually rely on their empirical know—how to determine the most adapted consistency of poultices for a given type of substrate. The purpose of the following study was to scientifically determine the consistency and workability of fresh poultices. A test procedure was adapted from the fields of mortar, cement and concrete. In the same way as for cement and mortar standards, poultices can be classified in different categories according to their composition. It has been demonstrated that the determination of consistency helps to optimise poultice water content, while the workability has a direct influence on the adhesion of the poultice to the substrate. The knowledge of these properties is essential to determine the best conditions for a desalination treatment. Finally, optimal ranges of consistency and workability are established for the main categories of poultices (cellulose and mineral) and may help end-users to improve their own poultice recipes. Shrinkage limits of poultices are determined to insure their good adherence of the substrate during drying.
Starting Page	1233
Ending Page	1240
Page Count	8
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	44
Issue Number	7
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-12-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Consistency Workability Adhesion Poultice Desalination Masonry Civil Engineering Theoretical and Applied Mechanics Building Materials Materials Science Structural Mechanics Operating Procedures, Materials Treatment
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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