Our California refineries produce CARBOB gasoline, CARB diesel, jet fuel, asphalt and other petroleum products. In 2008, these refineries converted approximately 38.5% of crude oil into higher value products such as gasoline, diesel and jet fuel, with 30.5% converted to asphalt, fuel oil and sulfur.
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Types of modifiers Modified asphalts are often generically called "polymer modified asphalts." Other modifiers that may be used include asphalt binder extenders (primarily sulfur) and hydrocarbon materials. Hydrocarbons can produce either hardening or softening effects.
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A method of estimating the cost of a project (or part of a project) based on one or more project-based cost factors. Historical bid data is commonly used to define parameters related to the cost of a typical transportation facility construction, such as cost per lane mile, cost per interchange or
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Abstract: Sulfur extended asphalt technique is an effective technical means as it uses SEAM as an additives of asphalt mixture. According to the analysis of SEAM modified asphalt mixture mechanism and the functions of SEAM in asphalt mixture, SEAM has a well modification.
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Abstract. Sulfur Extended Asphalt Modifier (SEAM) in solid pellet form is currently being marketed as an additive for hot asphalt mixtures. Typically 40% of the bitumen phase in the asphalt mix can be replaced by SEAM using conventional mix design and production techniques.
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Sulfur is an abundant co-product of the oil and gas production. By 2020, new regulations limiting the sulfur content in maritime fuels will increase its supply. The objective of this study is to evaluate the cracking resistance of sulfur extended asphalt (SEA) mixtures as compared to AC prepared with
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In the search of modified bitumen in bituminous pavement, the feasibility of mixing pyrolysis oil of municipal solid waste into bitumen was examined to find an efficient, cost-effective and environmental friendly substitute. In case of addition of
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asphalt modifiers for reducing permanent deformation (rutting) in flexible airfield pavements. Modifiers selected for qvaluati.on included carbon black, sulfur, styrene-butadiene-styrene, ethyl-vinyl-acetate, and polyolefin. A series of binder and mixture tests were performed in the laboratory to evaluate the
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The availability and pricing of sulfur with respect to sulfur-extended asphalt paving mixtures are assessed. The assessment includes a review of past and current trends as vvell as estimates of the availability of sulfur up to the year 2000 for the United States and specifically the state of Washington.
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An extensive review of the history and existing literature of sulfur-based asphalt paving can be found in Sakib et al. In summary, the economic viability, proven success of sulfur in the past
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Keywords: Sulfur extended asphalt, pavement, sulfur, road construction. Sulfur's ability to replace a portion of the bitumen (about 35%) used in asphaltic concrete mixes as well as ability to modify and enhance high temperature properties of asphalt concrete are the main factors for using sulfur
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Sulfur Extended Asphalt (SEA) used for paving roads is one of the promising applications for sulfur modification of asphalt binders by the addition of modifiers. Sulfur’s ability to modify and enhance the properties of construction materials has been conducted a study to determine the feasibility of using dune sand in asphalt-concrete
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Sulphur Extended Asphalt Modifier (SEAM) – Phase I David Timm Nam Tran . $ 280,000 Sep 2009 Preparing report : Evaluate the performance of a SEAM asphalt mixture and structural capacity of a pavement test section constructed with SEAM mix layers. Alabama DOT Pavement Condition Model Based On Automated Pavement Distress Surveys
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Other modifiers that may be used include asphalt binder extenders (primarily sulfur) and hydrocarbon materials. Hydrocarbons can produce either hardening or softening The viscosity functions of several polymer-modified asphalts were studied at different temperatures in steady-state rate sweep tests.
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