Asphalt-based coatings

Readdy, Reactivity of Minol II Explosive with Asphalt-Based Coatings of Bomb Cavities , PATM 1944 (Oct 1970) 36) J. Harris, Ther-... 

The first step in the manufacture of asphalt-based coatings consists of the distillation of crude petroleum, which results in distillate fractions (gasoline, naptha, kerosene, diesel fuel, and gas oil). The fraction of crude oil that boils above approximately 300 C is not distilled, but is withdrawn from the bottom of the distillation... 

Several Pseudomonas spp. have been documented in the literature as common contaminants and derivatives of petroleum fluids (aromatic and paraffinic hydrocarbons, kerosene fuels, cutting oil emulsions), as well as, asphalt and asphalt-based coatings. Generally, their presence produces an alteration of fuel quality which leads to slime formation and subsequent blockages of filters and injection systems. In addition, several types of corrosion processes have been demonstrated which primarily involve pitting (Genner and Hill, 1981). Occasionally, the presence of marcescens has been reported in association with... 

In pipelining, the trend is towards all-welded steel for long lines, and since the wall thickness is less than that of cast iron, protection is the more important. Many types of coating are used, from thick concrete to thin paint films, and each has its own particular suitability, but the majority of pipelines throughout the world today are coated with hot-applied coal tar or petroleum asphalt-base-filled pipeline enamels, into which reinforcing wraps, such as glass fibre are applied. 

It is often claimed that a coal-tar-base coating absorbs less water than an asphalt coating and there is evidence in practice to support this claim, but some asphalt enamels in practice have been as good as the best coal-tar enamels. 

Uses/Sources. Asphalt fumes arise from asphalt used for road construction, roofing, and coating of construction materials and in association with the production of asphalt from petroleum in asphalt-based paints... 

Aliphatic hydrocarbons Aliphatic hydrocarbons or paraffins such as naphtha or mineral spirits are typically used with asphalt-, oil-, and vinyl-based coatings. 

Bituminous binders are a crude type of hydrocarbon resin, generally produced as a by-product during distillation of crude oil or coal. Bituminous resins, based on their chemical composition, are categorized as asphalt-based and coal-tar pitch-based products. We will briefly discuss some important bituminous binders used in coatings and related industries. 

Over the years, multilayers of tar-based waterproofers replaced the hot asphalt used in roofing. In early 1900, asphalt became available from petroleum refining, and it was followed by oxidized bitumen interlaid with roofing felt and then alternated with a mineral base sheet, l" Asphalt-based materials are used extensively as binders, sealants, and waterproof coatings in diverse applications because of their low cost, inherent cohesive nature, weather-resistant properties, and ease of processing in the molten state. 

Roofing - Short, float, and shingle fiber are used in asphalt shingles and roofing felts and in asphalt-based roof coatings to provide dimensional stability and flexibility, to enhance crack resistance and weatherability, and to control... 

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