Influence of carbonation on the load dependent deformation of hydraulic lime mortars

Richard J Ball; Adel El-Turki; Geoffrey C Allen

doi:10.1016/j.msea.2010.12.070

Influence of carbonation on the load dependent deformation of hydraulic lime mortars

Richard J Ball, Adel El-Turki, Geoffrey C Allen

Department of Architecture & Civil Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (SciVal)

Abstract

The time dependent deformation of natural hydraulic lime mortar (NHL3.5) through creep and shrinkage under load, in the first 63 days after mixing, has been investigated. An apparatus was constructed to measure the dimensional changes of eight individual specimens simultaneously. The influence of load on deformation rate was found to decrease with time during the experiment. The rate of decrease in load dependent deformation, creep, with time was shown to be inversely proportional to the extent of carbonation. This observation supports the theory that deformation can be explained by the dissolution of calcium hydroxide crystals under stress and subsequent re-precipitation of calcite in areas free from stress.

Original language	English
Pages (from-to)	3193-3199
Number of pages	7
Journal	Materials Science and Engineering A
Volume	528
Issue number	7-8
Early online date	25 Dec 2010
DOIs	https://doi.org/10.1016/j.msea.2010.12.070
Publication status	Published - 25 Mar 2011

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10.1016/j.msea.2010.12.070

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abstract = "The time dependent deformation of natural hydraulic lime mortar (NHL3.5) through creep and shrinkage under load, in the first 63 days after mixing, has been investigated. An apparatus was constructed to measure the dimensional changes of eight individual specimens simultaneously. The influence of load on deformation rate was found to decrease with time during the experiment. The rate of decrease in load dependent deformation, creep, with time was shown to be inversely proportional to the extent of carbonation. This observation supports the theory that deformation can be explained by the dissolution of calcium hydroxide crystals under stress and subsequent re-precipitation of calcite in areas free from stress.",

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AB - The time dependent deformation of natural hydraulic lime mortar (NHL3.5) through creep and shrinkage under load, in the first 63 days after mixing, has been investigated. An apparatus was constructed to measure the dimensional changes of eight individual specimens simultaneously. The influence of load on deformation rate was found to decrease with time during the experiment. The rate of decrease in load dependent deformation, creep, with time was shown to be inversely proportional to the extent of carbonation. This observation supports the theory that deformation can be explained by the dissolution of calcium hydroxide crystals under stress and subsequent re-precipitation of calcite in areas free from stress.

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Influence of carbonation on the load dependent deformation of hydraulic lime mortars

Abstract

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An Electrochemical Approach to Study Carbonation of Novel Lime Based Materials

MC2- X-ray diffraction (XRD)

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Influence of carbonation on the load dependent deformation of hydraulic lime mortars

Abstract

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Projects

An Electrochemical Approach to Study Carbonation of Novel Lime Based Materials

Equipment

MC2- X-ray diffraction (XRD)

Cite this