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Historic Preservation and Conservation

University of Pennsylvania

Consolidation

Publication Year

Articles 1 - 5 of 5

Full-Text Articles in Architecture

Testing And Evaluation Of Soil Based Grouts For The Adhesion Of Consolidated And Un-Consolidated Painted Lime Plaster At The Mission San José De Tumacácori, Nicole M. Declet Díaz Jan 2017

Testing And Evaluation Of Soil Based Grouts For The Adhesion Of Consolidated And Un-Consolidated Painted Lime Plaster At The Mission San José De Tumacácori, Nicole M. Declet Díaz

Theses (Historic Preservation)

The interior decorative painting at Mission San Jose de Tumacácori is a rare survival of late 18th century-early 19th century artistic traditions of northern Sonora and the Kino mission churches. Despite earlier attempts to stabilize these finishes, the original painted lime plaster has continued to detach from the adobe substrate. Previous techniques to stabilize the paintings began with research by J. Rutherford Gettens in 1949-1952 and subsequent attempts in 1984 to reattach detached plaster have proven ineffective. The current research evaluates soil-based injection grouting in order to adhere the loose plaster on the nave and sanctuary walls. Earthen grouts were ...


Performance Evaluation Of Commercial Nanolime As A Consolidant For Friable Lime Based Plaster, Jean Jang Jan 2016

Performance Evaluation Of Commercial Nanolime As A Consolidant For Friable Lime Based Plaster, Jean Jang

Theses (Historic Preservation)

This thesis focuses on the performance evaluation of commercial nanolime as a consolidant for friable historic lime based plaster such as found at Mission San Jose de Tumacácori, a Spanish Colonial mission site near Tucson, Arizona. The church’s façade was originally finished with a polychromatic painted on fired brick and adobe. Though generally stable over time, the exterior plaster at Tumacácori became friable and detached after repeated weathering cycles of high diurnal temperature swings and precipitation concentration during monsoon season in the summer. As friable stucco is vulnerable to loss, consolidation should be considered a first priority in the ...


Condition Assessment And Treatment Recommendations At Holly Tower Support Rock, Hovenweep National Monument, Laura Alexandra Lacombe Jan 2013

Condition Assessment And Treatment Recommendations At Holly Tower Support Rock, Hovenweep National Monument, Laura Alexandra Lacombe

Theses (Historic Preservation)

Between 1985 and 2006, archaeologists at Hovenweep National Monument observed a dramatic increase in erosional loss on the west side of the Holly Tower support rock, which is a detached ledgerock of Dakota Sandstone. This thesis investigates the deterioration mode and pattern of the monolith, attributes cause to these observations, and proposes preventive and remedial treatments to stabilize the boulder based on existing research and historical precedent, as well as site survey and material testing. Delamination and excessive friability are addressed through physical and mechanical testing of a combined treatment program using Funcosil Antihygro, an anti-swelling agent, and Remmers KSE ...


Consolidation Treatments For The Alveolar Erosion Of The Agrillaceous Sandstone At Durham Castle, Mary Catherine Collins Jan 2012

Consolidation Treatments For The Alveolar Erosion Of The Agrillaceous Sandstone At Durham Castle, Mary Catherine Collins

Theses (Historic Preservation)

The thesis addresses possible consolidation treatments for the sandstone masonry of Durham Castle, a UNESCO World Heritage site located in Durham, England. The historic masonry is made of an argillaceous sandstone that suffers a unique deterioration phenomenon known as alveolar erosion. Alveolar erosion is a problem that relates to the geo-chemical nature of the stone, particularly the presence of swelling clays. Two treatments were considered in this thesis: a plain ethyl silicate (Prosoco OH100), and an elastified ethyl silicate (Remmers KSE 300 E). The performance of each treatment was compared through laboratory testing of the following properties: water absorption and ...


Evaluation Of Consolidation Treatments For The San José Convento Column, San Antonio Missions National Historic Park, San Antonio, Texas, Kalen Daniel Mcnabb Jan 2012

Evaluation Of Consolidation Treatments For The San José Convento Column, San Antonio Missions National Historic Park, San Antonio, Texas, Kalen Daniel Mcnabb

Theses (Historic Preservation)

The retreatment of previously consolidated stone has become a common occurrence and an important area of research in the field of architectural conservation. The San José Convento Column within the San Antonio Missions National Historical Park in San Antonio, Texas is a prime example for consideration. Initially analyzed, tested, and treated in 1993 by the Architectural Conservation Laboratory at the University of Pennsylvania, the limestone column is in need of additional treatment. Recent analysis has determined that while the 1993 treatment had been largely successful, microcracks originally present have advanced and surface detachment has worsened, largely due to clay swelling ...