Non-destructive investigation of microporosity in marbles by means of small angle neutron scattering

R. Coppola, A. Lapp, M. Magnani, M. Valli

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Abstract

Small-angle neutron scattering (SANS) measurements have been carried out on different marble and limestone samples, of relevance to cultural heritage safeguard, to investigate the micropore distribution in the size range between 10 and 1000 Å. Different varieties of marbles have been studied using a CaCO3single crystal, pore-free, as a reference. A series of red scaglia limestone samples has also been tested obtaining for this material, very reproducible results. Namely identical SANS cross-sections are found for specimens issued from a modern quarry and for samples issued from a historical building. Furthermore, the micropore volume distribution functions obtained by Fourier transformation of the SANS data are in accordance with porosimetry results for pore sizes larger than approximately 500 Å. The results of SANS measurements carried out to try and distinguish close and open microporosity are also reported. © 2002 Elsevier Science Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)223 - 227
Number of pages5
JournalConstruction and Building Materials
Volume16
Issue number4
DOIs
Publication statusPublished - Jun 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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