Stucco

It ls not surprising chat such a relation should hold at the Limit of Knudsen diffusion, since Che Knudsen diffusion coefficients are themselves inversely proportional to the square roots of molecular weights, but the pore diameters in Graham s stucco plugs were certainly many times larger chan the gaseous mean free path lengths at the experimental conditions. 

The phenomenon of thermal transpiration was discovered by Osborne Reynolds [82], who gave a clear and detailed description of his experiments, together with a theoretical analysis, in a long memoir read before the Royal Society in February of 1879. He experimented with porous plates of stucco, ceramic and meerschaum and, in the absence of pressure gradients, found that gas passes through the plates from the colder to the hotter side. His experimental findings were summarized in the following "laws" of thermal transpiration. 

Searching a crime scene is a complex process (25), involving poHce, crime scene technicians, and forensic scientists. The procedure requires careful documentation, collection, and preservation of the evidence. Trace evidence (26) in criminal investigations typically consists of hairs (27,28) both natural and synthetic fibers (qv) (29,30), fabrics glass (qv) (31,32) plastics (33) sod plant material budding material such as cement (qv), paint (qv), stucco, wood (qv), etc (34), flammable fluid residues (35,36), eg, in arson investigations explosive residues, eg, from bombings (37,38) (see Explosives and propellents), and so on. 

Any of these mortars can be used for unit masonry or for stucco (exterior plaster). The finish coat in conventional interior plastering is composed of either neat time putty or a sanded putty, gauged with Keene s cement or gypsum-gauging plaster. The former is called a whitecoat finish the latter a sandfloat finish. 

Poly(vinyl alcohol) is used as an additive to dry-wall joint cements and stucco finish compounds. Rapid cold-water solubiUty, which can be achieved with finely ground PVA, is important in many dry mixed products. Partially hydrolyzed grades are commercially available in fine-particle size under the name S-grades. The main purpose of the poly(vinyl alcohol) is to improve adhesion and act as a water-retention aid. 

Other Types of Portland Cements. White Portland cementis standard Type I or III Pordand cement with raw materials selected and controUed to have negligible amounts of Hon and manganese oxides, which impart the gray color. The white Pordand cement is used in decorative and architectural appHcations like precast curtain waUs, terra22o surfaces, stucco, tile grout, and decorative concrete. 

Plastic cements are hydrauHc cements that have plastici2ing agents added to Pordand cement during the grinding operation to make them dow better. The primary use for plastic cements is in plasters and stucco. 

The hermhydrate (stucco) is normally produced by heat conversion of the dihydrate from which 3/2 H2O is removed as vapor. The resulting powder is also known as plaster of Paris [26499-65-0]. Stucco has the greatest commercial significance of these materials. It is the primary constituent used to fabricate products and ia formulated plasters used ia job- or shop-site appHcations. 

P-Hemihydrate. The dehydration of gypsum, commonly referred to as calcination in the gypsum industry, is used to prepare hemihydrate, or anhydrite. Hemihydrate is generally called stucco in North America and plaster in many other continents. In North America, plaster is differentiated from hemihydrate or stucco by the inclusion of additives to control intended use properties, eg, rehydration time, density, coverage, strength, and viscosity. 

Calcined Anhydrite. Soluble anhydrite, or second-settle stucco, has physical properties similar to those of gypsum plaster. It hydrates to the dihydrate rapidly in water. Its outstanding property is its extreme affinity for any moisture, which makes it a very efficient drying agent (see Desiccants). In ambient moisture-laden air, it readily hydrates to hemihydrate. Soluble anhydrite, under the trade name Drierite, is widely used as a desiccant in the laboratory and in iadustry. A small amount is also used as an insecticide carrier. Small amounts of soluble anhydrite are unintentionally produced in most commercial calciners during hemihydrate production. 

Hydraulic limes (84) may be used for mortar, stucco, or the scratch coat for plaster. They harden slowly under water, whereas high calcium limes, after slaking with water, harden in air to form the carbonate but not under water at ordinary temperatures. However, at elevated temperatures achieved with steam curing, lime—silica sand mixtures do react to produce durable products such as sand—lime bricks. 

An appHcation where latex paints show outstanding performance is over masonry such as stucco or ciader block constmction. This performance results from saponification resistance ia the preseace of the alkaH from the cement. Furthermore because masoary surfaces are porous, having both small and large pores, the low viscosity external phase of a latex paint can penetrate rapidly iato the small pores, causiag a rapid iacrease ia the viscosity of the remaining paiat. The bulk paiat, ia turn, sinks iato the larger holes more slowly than a solution-based paint. Thus less latex paint is required to cover the same surface area as compared to alkyd paints. 

Gypsum, raw 25 total 5 Imp-mill type grind and calcine to stucco... 

Putz-kalk, m. plastering lime stucco polishing chalk, -lage, /. coat of plaster, -lappen,... 

Stukkatur, /. stucco work plastering, stillpen, v.t. turn upside down (or inside out) put (over or upon). 

An important aspect of design is to predict the lines of run-off of surface water. This is because the water will contain minute particles of brown rust, especially in the pre-stabilisation period, that will stain some surfaces. Matt, porous surfaces stain particularly easily and run-off should not be over concrete, stucco, galvanised steel, unglazed brick or stone. 

Evola, Julius. The mystery of the Grail initiation and magic in the quest for the spirit translated from the Italian by Guido Stucco. Rochester (VT) Inner Traditions, 1997. xvi, 187p. ISBN 0-89281-573-6... 

Mortars are cements used for bonding together masonry units, such as stones or bricks. When a cement is used to conceal masonry, as a more or less smooth covering on walls, for example, it is referred to as plaster. A very fine plaster, known as stucco, is made of very thin sand or finely comminuted marble. Freshly prepared plasters and stuccos are spread on consolidated masonry to form more or less uniform and smooth layers stucco also provides a smooth and often flat outer coating. 

Building mud, a composite material, is easily prepared by mixing clay or clayey soil with fibrous matter, such as straw or dung of herbivorous animals, and sufficient water to obtain a plastic, pliable mass. In ancient Egypt, for example, mud was made by mixing clayey soil with sand, chopped straw, and sufficient water so as to make the mixture pliable and suitable either for use as mortar or stucco or for making bricks. 

Montes, L. T., M. R. Garcia, J. Gazzola, and S. Gomez (2005), Analysis of stucco floors from the citadel of the archaeological zone of Teotihuacan, Mexico, Materials Research Society Symposium Proceedings (Materials Issues in Art and Archaeology VII) 852, 353-359. 

Castle Lemberk Middle age Stucco decoration Collagens... 

J. Wouters, M. Van Bos, K. Lamens, Baroque Stucco Marhle Decorations. I. Preparation of Laboratory Replicas and Establishment of Criteria for Analytical Evaluation of Organic Materials, Studies in Conservation, 45, 106 116 (2000). 

F. Ronca, Protein Determination in Polychromed Stone Sculptures, Stuccoes and Gesso Grounds, Studies in Conservation, 39, 107 120 (1994). 

M.P. Colombini, U. Bartolucci, Protocollo Analitico per la Conoscenza dello Stucco. Tecniche Cromatografiche e Spettrometriche, in LArte dello Stucco, New Press, Como, 139 148 (2006). 

On the verdant hillside overlooking Heidelberg, the house looked like a stucco pillbox. A short, bullnecked man came to the door and asked the men who they were. Only after consulting his wife, a dumpy Frau in a spotless gingham dress, did he admit that his name was Hermann Schmitz. 

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