Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Damage development to treated brick masonry in a long-term salt crystallisation test
AbstractThe development of salt-damage to brick masonry specimens, treated with a water repellent and a consolidant, during a long-term salt crystallisation test, is evaluated. The experiment performed followed the Recommendation RILEM TC 127-MS-A.1, which uses constant drying conditions 20 °C/50% RH. Due to the fact that the specimens on which, the salt crystallisation test was performed has been stored for several years under the same test conditions, repeated evaluations could be performed over time. The treatments comprised a water repellent (siloxane), a consolidant (ethyl silicate), as well as a treatment of ethyl silicate followed by siloxane. Three months was initially considered to be the end of the test, being the period in which the specimens could dry out almost completely. The damage present after 4 days, 3 months and 48 months has been compared. It was found that in the period between 3 and 48 months the damage mechanism still goes on, although nearly all water introduced as a salt solution at the start of the test had evaporated. Most damage indeed occurred in the period approximately between 12 and 48 months.
Damage development to treated brick masonry in a long-term salt crystallisation test
AbstractThe development of salt-damage to brick masonry specimens, treated with a water repellent and a consolidant, during a long-term salt crystallisation test, is evaluated. The experiment performed followed the Recommendation RILEM TC 127-MS-A.1, which uses constant drying conditions 20 °C/50% RH. Due to the fact that the specimens on which, the salt crystallisation test was performed has been stored for several years under the same test conditions, repeated evaluations could be performed over time. The treatments comprised a water repellent (siloxane), a consolidant (ethyl silicate), as well as a treatment of ethyl silicate followed by siloxane. Three months was initially considered to be the end of the test, being the period in which the specimens could dry out almost completely. The damage present after 4 days, 3 months and 48 months has been compared. It was found that in the period between 3 and 48 months the damage mechanism still goes on, although nearly all water introduced as a salt solution at the start of the test had evaporated. Most damage indeed occurred in the period approximately between 12 and 48 months.
Damage development to treated brick masonry in a long-term salt crystallisation test
van Hees, R.P.J (Autor:in) / Brocken, H.J.P (Autor:in)
Construction and Building Materials ; 18 ; 331-338
20.02.2004
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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