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Heritage 2019, 2(1), 230-253; https://doi.org/10.3390/heritage2010017

Salt Weathering of 7th Century CE Granite Monument of Shore Temple, Mahabalipuram—Scientific Investigation and Conservation Strategy

1
Archaeological Survey of India, Science Branch, Fort St. George, Chennai-600 009, India
2
National Museum Institute, Department of Conservation, Janpath, New Delhi-110 011, India
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 11 October 2018 / Revised: 11 January 2019 / Accepted: 14 January 2019 / Published: 17 January 2019
(This article belongs to the Special Issue Geology and Heritage: From Natural to Built Heritage)
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Abstract

Salt-induced deterioration of architectural heritage is accelerated drastically in marine environments. This paper investigates the deterioration mechanism of the Shore Temple using various analytical techniques. Deteriorated and pristine stone samples were analyzed using X-ray fluorescence spectroscopy (XRF), thin section studies, and SEM in order to understand the deterioration mechanism. The meteorological and micro-climatic conditions of Shore Temple in the tropical Indian climate were studied, as they have played a vital role in the deterioration of the stone matrix. The sides of the temple that face the sea as well as the upper part of the temple show intense alveolarization and the stone variety was petrologically identified as “garnetiferous hornblende biotite granite”. The evaluation of results in terms of the efficacy of ethyl silicate consolidation of stone after desalination is very difficult due to continuous sea sprays. The compatible lime rendering evidenced in the shelter area and then scientifically examined during this study may be applied as a protective layer to safeguard and conserve the lone Pallava edifice on the seashore from deterioration in tropical and hygric saline conditions. View Full-Text
Keywords: microclimatic conditions; poultice; lime plaster; granite; salt weathering; soluble salts; precipitation; relative humidity (RH); alveolarization microclimatic conditions; poultice; lime plaster; granite; salt weathering; soluble salts; precipitation; relative humidity (RH); alveolarization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kumar, S.V.; Singh, M.R. Salt Weathering of 7th Century CE Granite Monument of Shore Temple, Mahabalipuram—Scientific Investigation and Conservation Strategy. Heritage 2019, 2, 230-253.

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