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Fibrous Plaster
Plasterwork is construction or ornamentation done with plaster, such as a layer of plaster on an interior or exterior wall structure, or plaster decorative moldings on ceilings or walls. This is also sometimes called pargeting. The process of creating plasterwork, called plastering or rendering, has been used in building construction for centuries. For the art history of three-dimensional plaster, see stucco. History The earliest plasters known to us were lime-based. Around 7500 BC, the people of 'Ain Ghazal in Jordan used lime mixed with unheated crushed limestone to make plaster which was used on a large scale for covering walls, floors, and hearths in their houses. Often, walls and floors were decorated with red, finger-painted patterns and designs. In ancient India and China, renders in clay and gypsum plasters were used to produce a smooth surface over rough stone or mud brick walls, while in early Egyptian tombs, walls were coated with lime and gypsum plaster and the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stucco Plaster Tools
Stucco or render is a construction material made of aggregates, a binder, and water. Stucco is applied wet and hardens to a very dense solid. It is used as a decorative coating for walls and ceilings, exterior walls, and as a sculptural and artistic material in architecture. Stucco can be applied on construction materials such as metal, expanded metal lath, concrete, cinder block, or clay brick and adobe for decorative and structural purposes. In English, "stucco" sometimes refers to a coating for the outside of a building and "plaster" to a coating for interiors. As described below, however, the materials themselves often have little or no difference. Other European languages, notably Italian, do not have the same distinction: ''stucco'' means ''plaster'' in Italian and serves for both. Composition The basic composition of stucco is lime, water, and sand. The difference in nomenclature between stucco, plaster, and mortar is based more on use than composition. Until t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pietre Dure
''Pietra dura'' (), ''pietre dure'' () or intarsia lapidary ( see below), called ''parchin kari'' or ''parchinkari'' () in the Indian subcontinent, is a term for the inlay technique of using cut and fitted, highly polished colored stones to create images. It is considered a decorative art. The stonework, after the work is assembled loosely, is glued stone-by-stone to a substrate after having previously been "sliced and cut in different shape sections, and then assembled together so precisely that the contact between each section was practically invisible". Stability was achieved by grooving the undersides of the stones so that they interlocked, rather like a jigsaw puzzle, with everything held tautly in place by an encircling 'frame'. Many different colored stones, particularly marbles, were used, along with semiprecious, and even precious stones. It first appeared in Rome in the 16th century, reaching its full maturity in Florence. ''Pietra dura'' items are generally crafted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distemper (paint)
Distemper is a decorative paint and a historical medium for painting pictures, and contrasted with tempera. The binder (paint), binder may be glues of vegetable or animal origin (excluding egg). Soft distemper is not abrasion resistant and may include binders such as chalk, ground pigments, and animal glue. Hard distemper is stronger and wear-resistant and can include casein or linseed oil as binders. Soft distemper Distemper is an early form of whitewash, also used as a medium for artistic painting, usually made from powdered calcium carbonate, chalk or calcium hydroxide, lime and sizing, size (a gelatinous substance). Alternatives to chalk include the toxic substance lead carbonate, white lead. Distempered surfaces can be easily marked and discoloured, and cannot be washed down, so distemper is best suited to temporary and interior decoration. The technique of painting on distempered surfaces blends watercolours with whiting and glue. "The colours are mixed with whitening, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Aspdin
Joseph Aspdin (25 December 1778 – 20 March 1855) was an English bricklayer, businessman, inventor, and stonemason who obtained the patent for Portland cement on 21 October 1824. Life Joseph Aspdin (or Aspden) was the eldest of the six children of Thomas Aspdin, a bricklayer living in the Hunslet district of Leeds, Yorkshire. He was baptised on Christmas Day, 1778. He entered his father's trade, and married Mary Fotherby at Leeds Parish Church (the Parish Church of St Peter at Leeds) on 21 May 1811.Leeds Parish Church, Marriage register, Page No 208, for 21 May 1811 By 1817, he had set up in business on his own in central Leeds. He must have experimented with cement manufacture during the next few years, because on 21 October 1824 he was granted the British Patent BP 5022 entitled ''An Improvement in the Mode of Producing an Artificial Stone'', in which he coined the term "Portland cement" by analogy with the Portland stone, an oolitic limestone that is quarried on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Vicat
Louis Vicat (31 March 1786, Nevers – 10 April 1861, Grenoble) was a French engineer. He graduated from the École Polytechnique in 1804 and the École des Ponts et Chaussées in 1806. Vicat studied the setting of mortars and developed his own. The first building using it is the bridge at Souillac (Dordogne), erected in 1818. The material was popular but was superseded by Portland cement. He also invented the Vicat needle that is still in use for determining the setting time of concretes and cements. His son Joseph Vicat founded Vicat Cement, which is today a large international cement manufacturing company. He was a member of the French Academy of Sciences and his name is one of the 72 names inscribed on the Eiffel Tower. Vicat was elected a Foreign Honorary Member of the American Academy of Arts and Sciences The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Frost (cement Maker)
James Frost (1780?-1840?) was an English businessman and inventor who invented processes that led to the eventual development of Portland cement. Biography Frost was born in Finchley, Middlesex, England. He set up a plant making Roman cement at Harwich in 1807, supplying it for government work. He began experimenting with formulations for "artificial" cements that would provide a cheaper alternative to Roman cement. He appears to have produced a prototype cement at Harwich in 1810. However, it was not until 1822 that he was granted a patent for what he called "British Cement". In October 1825, he leased land at Swanscombe, Kent, and set up a plant to manufacture both Roman cement and the new product. The key innovation in his work was the "wet" grinding of raw materials, which became fundamental to the early development of Portland cement. He ground the soft local chalk together with alluvial clay from the Medway estuary and added water in a washmill to produce a thin slur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar (masonry)
Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colours or patterns to masonry walls. In its broadest sense, mortar includes pitch, asphalt, and soft clay, as those used between bricks, as well as cement mortar. The word "mortar" comes from the Old French word ''mortier'', "builder's mortar, plaster; bowl for mixing." (13c.). Cement mortar becomes hard when it cures, resulting in a rigid aggregate (composite) , aggregate structure; however, the mortar functions as a weaker component than the building blocks and serves as the sacrificial element in the masonry, because mortar is easier and less expensive to repair than the building blocks. Bricklayers typically make mortars using a mixture of sand, a binder, and water. The most common binder since the early 20th century is Portland cement, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland Cement
Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar (masonry), mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and is usually made from limestone. It is a fine powder (substance), powder, produced by heating limestone and clay minerals in a kiln to form Clinker (cement), clinker, and then #Cement grinding, grinding the clinker with the addition of several percent (often around 5%) gypsum. Several types of portland cement are available. The most common, historically called ordinary portland cement (OPC), is grey, but white portland cement is also available. The cement was so named by Joseph Aspdin, who obtained a patent for it in 1824, because, once hardened, it resembled the fine, pale limestone known as Portland stone, quarried from the windswept cliffs of the Isle of Portland in Dorset. Portland stone was p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Lime
Hydraulic lime (HL) is a general term for a variety of lime different from calcium oxide (quicklime), that sets by hydration and consists of calcium silicate and calcium aluminate, compounds that can harden in contact with water. This contrasts with calcium hydroxide, also called slaked lime or air lime that is used to make lime mortar, the other common type of lime mortar, which sets by carbonation (re-absorbing carbon dioxide (CO2) from the air). Hydraulic lime provides a faster initial set and higher compressive strength than air lime, and hydraulic lime will set in more extreme conditions, including under water. The terms 'hydraulic lime' and 'hydrated lime' are quite similar and may be confused but are not necessarily the same material. Hydrated lime is any lime which has been slaked whether it sets through hydration, carbonation, or both. Calcium reacts in the lime kiln with the clay minerals to produce silicates that enable some of the lime to set through hydration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone Ash
Bone ash is a white material produced by the calcination of bones. Typical bone ash consists of about 55.82% calcium oxide, 42.39% phosphorus pentoxide, and 1.79% water. The exact composition of these compounds varies depending upon the type of bones being used, but generally the formula for bone ash is Ca5(OH)(PO4)3. Bone ash usually has a density around 3.10 g/mL and a melting point of 1670 °C (3038 °F). Most bones retain their cellular structure through calcination. History Antiquity Burnt bones have been recovered from numerous Ancient Greek sanctuaries dating from the Late Bronze Age up to the Hellenistic period. The burnt bones are often calcined with a white or blueish color, allowing archaeologists to identify them as sacrificial remains. At the sanctuary to Artemis in Eretria a round altar of fieldstones filled with soil was found, dating to the 8th century BC. The upper surface was covered with clay and animal bones were burned on top, then apparently swep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Jackson (plasterwork)
George Jackson (1766–1840) was a British plasterwork innovator, active from 1780 onwards. He was commissioned by architect Robert Adam Robert Adam (3 July 17283 March 1792) was a British neoclassical architect, interior designer and furniture designer. He was the son of William Adam (architect), William Adam (1689–1748), Scotland's foremost architect of the time, and train ... to produce reverse-cut boxwood moulds (many to Adam designs). Jackson formed a company which still produces composition pressings and retains a boxwood mould collection. In 1780 Jackson founded George Jackson & Sons Ltd. in London which was active in decorative plaster ornaments and introduced the use of composition plaster into England. References External links * * 1766 births 1840 deaths Plasterers {{GB-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
