Effect of consolidation treatments on mechanical behaviour of sandstone

Marco Ludovico-Marques, Carlos Chastre

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12 Citations (Scopus)

Abstract

Experimental research was carried out about into ethyl silicate applications on sandstone samples. Consolidation was assessed by drilling strength, impregnation depth and also monotonic and cyclic uniaxial compressive tests in order to evaluate the compressive mechanical behaviour of treated sandstone. The stress-strain compression diagrams showed a significant increase in the values of mechanical parameters after consolidation treatments. The difference in compressive strength values between monotonic and cyclic compression disappears after the consolidation treatments. An equation of consolidation effect was obtained from an analytical model by means of compressive behaviour assessed by stress-strain diagrams.

These sandstone samples have values of porosity similar to the more weathered variety of sandstone found in facades of monuments in the village of Atouguia da Baleia, in the western region of Portugal. The most important degradation pattern found on sandstone building stones is alveolization caused by salt crystallization since the Middle Ages. (C) 2014 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)473-482
Number of pages10
JournalConstruction and Building Materials
Volume70
DOIs
Publication statusPublished - 15 Nov 2014

Keywords

  • Monuments
  • Sandstone
  • Ethyl silicates
  • Compression
  • Consolidation effect
  • STONE
  • COMPRESSION

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