Aruande seaded
Piltide suurus:
Millised failid prindime:
Teose andmed
Pealkiri: Pöide
Autor:
Dateering: 13.sajand
Teose mõõdud:
Sündmuse andmed
Pealkiri: Nano-workshop in Pöide
Kirjeldus: Title: „Nano-lime for conservation of stone, plaster and architectural surfaces“
Tutors: Jan Vojtechovsky (conservator, Pardubice University Conservation Department) and Karol Bayer (chemist, Dean of Pardubice University Conservation Department)
Coordinaator: Hilkka Hiiop
Time: 04.-08. september 2016
Place: Pöide Church, Saaremaa
The main topic of the workshops was a presentation and explanation of the use of lime nanomaterials in the conservation of calcareous porous materials - stone, architectural surfaces, building heritage (plaster, mural paintings, mortar, stucco) including practical demonstration as well as the theoretical background.
Toimumisaeg: 04.09.2016 - 08.09.2016
juku_logo_1.jpg
ID:6806) juku_logo_1.jpg
International workshop „Nano-lime for conservation of stone, plaster and architectural surfaces“ FINAL REPORT
ID:6804) International workshop „Nano-lime for conservation of stone, plaster and architectural surfaces“ FINAL REPORT
Following report is compiled by the participants of the workshop. It is devided by 7 test-areas, which were selected for practical tests for nano-lime applications on different materials and conditions:
1. Wallpaintings (2 test-areas)
2. Limestone (2 test-objects)
3. Plasters (2 test-areas)
4. Brick (1 test-area)
Jan Vojtechovský, SURFACE CONSOLIDATION OF WALL PAINTINGS USING LIME NANO-SUSPENSIONS (Acta Polytechnica 57(2):139–148, 2017)
ID:9438) Jan Vojtechovský, SURFACE CONSOLIDATION OF WALL PAINTINGS USING LIME NANO-SUSPENSIONS (Acta Polytechnica 57(2):139–148, 2017)
Abstract. Within the field of the conservation of historical and cultural monuments, lime nanosuspensions
are still a relatively new and unexplored material. This study examines their effect on
the consolidation of architectural surfaces and, consequently, on wall paintings. Previous experiments
showed that considerably deteriorated materials may not be adequately strengthened using only lime
nano-suspensions. Therefore, the effects of their admixtures and gradual applications with silicic acid
esters were examined. For verification, a simulation of a deteriorated lime-based paint layer was created
on panels of plaster. The results of the consolidation were subsequently studied using objective (peeling
test, water absorption capacity test, measuring colour changes using a mobile spectrophotometer) and
subjective methods (comparison of visual changes to a set standard and by testing cohesion using a
cotton swab). The microstructure of a consolidated paint layer was studied with a scanning electron
microscopy. Tests proved that with either individual lime-alcoholic suspensions or with successive
applications and mixtures of silicic acid esters it is feasible to achieve good consolidation results, whilst
the alkoxysilane content of the agent indisputably increases the consolidating effect of these materials.
Lecture notes by Jan Vojtechovsky
ID:6802) Lecture notes by Jan Vojtechovsky
Lecture notes by Jan Vojtechovsky
ID:6803) Lecture notes by Jan Vojtechovsky
test area I
ID:6971) test area I
Test spot no. 1. Choir, the wall painting (lime paint on plaster) around the eastern window
test area I
ID:6973) test area I
Test spot no. 2. Choir, the wall painting (lime paint on plaster) around the eastern window
test area II
ID:6974) test area II
Wall painting on the northern wall of the nave
test area III
ID:6975) test area III
The epitaph of Otto von Uexkyll. Detail no. 1
test area III
ID:6976) test area III
The epitaph of Otto von Uexkyll. Detail no. 2
test area III
ID:6977) test area III
The epitaph of Otto von Uexkyll. Detail no. 3
test area III
ID:6978) test area III
The epitaph of Otto von Uexkyll. Detail no. 4
test area III
ID:6979) test area III
The epitaph of Otto von Uexkyll. The penetration of the suspension in the stone. The pink colour indicates the calcium hydroxide particles on the stone.
test area IV
ID:6980) test area IV
Baptismal font of Pöide Church
test area IV
ID:6981) test area IV
Test area A. Baptismal font of Pöide Church
test area IV
ID:6982) test area IV
Test area B. Baptismal font of Pöide Church
test area V
ID:6984) test area V
Historical plaster (southern wall, west vault of the nave)
test area V
ID:6985) test area V
Test area no. 1. Historical plaster (southern wall, west vault of the nave)
test area V
ID:6986) test area V
Test area no. 2. Historical plaster (southern wall, west vault of the nave)
test area V
ID:6987) test area V
Test area no. 3. Historical plaster (southern wall, west vault of the nave)
test area V
ID:6988) test area V
Test area no. 4. Historical plaster (southern wall, west vault of the nave)
test area VI
ID:6989) test area VI
Test area A. Historical plaster (southern wall of the tower vault)
test area VI
ID:6990) test area VI
Test area B. Historical plaster (southern wall of the tower vault)
test area VI
ID:6991) test area VI
Test area C. Historical plaster (southern wall of the tower vault)
test area VII
ID:6992) test area VII
Fired bricks in southwest corner of nave´s west vault