TY - GEN
T1 - Controlling swelling of Portland Brownstone
AU - Wangler, Timothy
AU - Scherer, George W.
PY - 2008
Y1 - 2008
N2 - Many clay-bearing sedimentary stones such as Portland Brownstone will swell when exposed to water, and this can generate damaging stresses as differential strains evolve during a wetting cycle. Current swelling inhibitors, consisting of α,ω-diaminoalkanes, can reduce swelling in Portland Brownstone up to 50%. In this study, through X-ray diffraction and swelling strain experiments, we demonstrate that the α,ω-diaminoalkanes inhibit swelling by substituting for interlayer cations and partially hydrophobicizing the interlayer, then rehydrating on subsequent wetting cycles. We also introduce the copper (II) ethylenediamine complex as a potential treatment for swelling inhibition.
AB - Many clay-bearing sedimentary stones such as Portland Brownstone will swell when exposed to water, and this can generate damaging stresses as differential strains evolve during a wetting cycle. Current swelling inhibitors, consisting of α,ω-diaminoalkanes, can reduce swelling in Portland Brownstone up to 50%. In this study, through X-ray diffraction and swelling strain experiments, we demonstrate that the α,ω-diaminoalkanes inhibit swelling by substituting for interlayer cations and partially hydrophobicizing the interlayer, then rehydrating on subsequent wetting cycles. We also introduce the copper (II) ethylenediamine complex as a potential treatment for swelling inhibition.
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M3 - Conference contribution
AN - SCOPUS:62749200783
SN - 9781558999886
T3 - Materials Research Society Symposium Proceedings
SP - 91
EP - 104
BT - Materials Research Society Symposium Proceedings - Materials Issues in Art and Archaeology VIII
T2 - Materials Issues in Art and Archaeology VIII
Y2 - 26 November 2007 through 28 November 2007
ER -