Search results
Results from the WOW.Com Content Network
The slaking process involved in creating a lime putty is an exothermic reaction which initially creates a liquid of a creamy consistency. This is then matured for 2 to 3 months—depending upon environmental conditions—to allow time for it to condense and mature into a lime putty. A matured lime putty is thixotropic, meaning that when a lime ...
The process of tuckpointing requires that the excess lime putty is cut away from the fine tuckpointed line. This is performed using a Frenchmen [1] knife, a type of knife with a small, sharp, bent tip that allows the lime putty to be cut when guided along the tuckpointed line with a tuckpointer's straight edge. A double Frenchmen knife works by ...
Lime plaster is a type of plaster composed of sand, water, and lime, usually non-hydraulic hydrated lime (also known as slaked lime, high calcium lime or air lime). Ancient lime plaster often contained horse hair for reinforcement and pozzolan additives to reduce the working time.
In the assimilation process, the fungi use the components of frescoes as a carbon source through enzyme production, whereas in the dissimulation process, the decay is mainly by the excretion of waste products or secretion of metabolic intermediates including acids and pigments which can damage, stain or disfigure the surface. [3]
In the 14th century, decorative plasterwork called pargeting was being used in South-East England to decorate the exterior of timber-framed buildings. This is a form of incised, moulded or modelled ornament, executed in lime putty or mixtures of lime and gypsum plaster.
This list of museums in Pennsylvania encompasses museums defined for this context as institutions (including nonprofit organizations, government entities, and private businesses) that collect and care for objects of cultural, artistic, scientific, or historical interest and make their collections or related exhibits available for public viewing.
The fire was alight for several days, and then the entire kiln was emptied of the lime. In a draw kiln, usually a stone structure, the chalk or limestone was layered with wood, coal or coke and lit. As it burnt through, lime was extracted from the bottom of the kiln, through the draw hole. Further layers of stone and fuel were added to the top ...
The Pennsylvania National Fire Museum is a museum devoted to fire fighter heritage in Harrisburg, Pennsylvania, United States. The museum has a collection of artifacts from the hand-drawn equipment, vintage fire apparatus, pictures, and information about the history of fire fighting in Pennsylvania and throughout the United States. [1] The ...