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Design and evaluation of hydraulic lime grouts for the strengthening of stone masonry historic structures

Design and evaluation of hydraulic lime grouts for the strengthening of stone masonry historic... The present paper discusses an experimental procedure realized in order to design hydraulic lime based grouts adequate for the strengthening of stone masonry historic structures. With the aim to minimize incompatibility problems between the original materials and the grouts, several natural hydraulic lime based grouts, as well as a ternary (lime–pozzolan–cement) grout with reduced cement content, have been studied. The selection of the most suitable grouts was performed based on a set of criteria, namely injectability, mechanical and durability characteristics. The selected grouts were subsequently injected into cylindrical specimens that simulate the infill of three-leaf stone masonry. The experimental results obtained from mechanical tests carried out on the injected cylinders demonstrated that all grout mixes studied within this work were efficient in strengthening the infill material; they exhibited, however, differences in terms of durability properties. Finally, an empirical formula was developed to predict the compressive strength of the injected infill, as a function of the mechanical properties of grouts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Materials and Structures Springer Journals

Design and evaluation of hydraulic lime grouts for the strengthening of stone masonry historic structures

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References (25)

Publisher
Springer Journals
Copyright
Copyright © 2010 by RILEM
Subject
Engineering; Building Materials; Civil Engineering; Operating Procedures, Materials Treatment; Theoretical and Applied Mechanics; Materials Science, general; Structural Mechanics
ISSN
1359-5997
eISSN
1871-6873
DOI
10.1617/s11527-009-9572-1
Publisher site
See Article on Publisher Site

Abstract

The present paper discusses an experimental procedure realized in order to design hydraulic lime based grouts adequate for the strengthening of stone masonry historic structures. With the aim to minimize incompatibility problems between the original materials and the grouts, several natural hydraulic lime based grouts, as well as a ternary (lime–pozzolan–cement) grout with reduced cement content, have been studied. The selection of the most suitable grouts was performed based on a set of criteria, namely injectability, mechanical and durability characteristics. The selected grouts were subsequently injected into cylindrical specimens that simulate the infill of three-leaf stone masonry. The experimental results obtained from mechanical tests carried out on the injected cylinders demonstrated that all grout mixes studied within this work were efficient in strengthening the infill material; they exhibited, however, differences in terms of durability properties. Finally, an empirical formula was developed to predict the compressive strength of the injected infill, as a function of the mechanical properties of grouts.

Journal

Materials and StructuresSpringer Journals

Published: Jan 14, 2010

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