ple solution under a nitrogen flow before GC/MS analysis Asphalt fumes are characterized by GC/MS 10 GC TOP Thermo electron with a spilt/splitless injector and a mass spectrometer Automass II quadrupole Voy ager Thermo electron The determination of asphalt fume composition is carried out using positive electron ionisa tion EI to reduce occupational exposures to asphalt The complex chemical composition of asphalt makes it difficult to identify the specific component s responsible for adverse health effects observed in exposed workers Known carcinogens have been found in asphalt fumes generated at worksit Observations of acute irritation in workers from
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Request PDF on ResearchGate Characterization of asphalt fume composition by GC/MS and effect of temperature The aim of this work is to identify the volatile organic compounds VOC from Feb 14 32 Although fuel transfer stations are equipped with re capture systems to prevent fumes from escaping asphalt transfer stations are not The manufacturing process of asphalt can also affect its composition Hot mix asphalt paving materials can be manufactured by the following 1 batch mix plants 2 continuous mix mix
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Heated material can cause thermal burns Fumes from heated asphalt may be irritating to the eye nose and throat Hot Mix Asphalt contains aggregate a naturally occurring mineral complex with varying quantities of quartz crystalline silica Respirable Crystalline Silica RCS may cause cancer Hardened product may be subjected to various The properties of the asphalt cement do affect the performance of the residual asphalt on the road Water is the second ingredient in an asphalt emulsion Minerals or other materials in water can affect the production of stable emulsions Water that is suitable for drinking may not be suitable for asphalt
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The specific chemical identity and/or exact percentage of composition have been withheld as a trade secret 29 CFR product if heated may release asphalt fum During processing inhalation of fumes may cause dizziness and/or irritation to the eyes nose and throat Hot molten product will cause thermal burns to the skinAsphalt is a blackish brown solid semi solid or liquid depending on the formulation or mixture of Asphalt used Asphalt fumes are produced during the manufacture and heating of Asphalt which is used for road building and roofing and in rubber and adhesiv REASON FOR CITATION Asphalt is on the Hazardous Substance List because it is
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The Environmental Impact of Asphalt Plants SR 206 05 Asphalt Plants Know The Facts The National Asphalt Pavement Association NAPA founded in represents more than 1 100 asphalt producers paving contractors and affiliated businesses that build theComposition varies depending on the source of the crude and the specifications of the final product Uncertainties exist in the hazard characterization of asphalt fumes by many factors including its chemical complexity limitation of the Asphalt Materials Inc
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Henry 107 Asphalt Emulsion is a premium versatile coating for the protection of roofing materials metal and masonry surfac Solvent free it is made from asphalt emulsified with bentonite clay and water Henry 107 Asphalt Emulsion is cold applied non flammable while wet corrosion resistant and waterproof when dryHarmful fum Without proper protection road workers can easily breathe in the fumes from the asphalt mixture When possible workers should stand upwind of where the asphalt mixing and pouring takes place so the fumes and vapors move away from their breathing space Personal protective equipment PPE is necessary too including
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The American Board of Industrial Hygiene is reminding safety professionals and managers to limit worker exposure to asphalt fum More than 500 000 workers are exposed to asphalt fumes according to OSHA Asphalt also known as bitumen is found in natural deposits or can be obtained by refining A highly sensitive selective and reliable analytical method has been developed and validated for characterization of asphalt fume generated under simulated road paving conditions A dynamic asphalt fume generation system was modified to provide consistent test atmospheres at simulated asphalt road paving conditions In the process of fume generation asphalt was initially preheated in an
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Asphalt is a heavy dark brown to black mineral substance one of several mixtures of hydrocarbons called bitumens Asphalt is a strong versatile weather and chemical resistant binding material which adapts itself to a variety of us Asphalt binds crushed stone and gravel commonly known as product may help limit any inhalation hazard from oxidized asphalt during application in its hardened state However physical forces such as grinding drilling and other demolition work on this product may liberate dust containing oxidized asphalt Burning or heating of the pro duct may cause fumes
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roofing asphalt fumes are a potential occupational carcinogen Occupational exposure to respirable crystalline silica is classified as a known carcinogen in humans IARC has determined that respirable crystalline silica is carcinogenic to humans Group 1 based on findings of sufficient evidence of carcinogenicity in bothOver a half million workers are exposed to fumes from asphalt a petroleum product used extensively in road paving roofing siding and concrete work When hot asphalt is applied in a molten state it generates toxic fum Workers exposed to asphalt fumes are at risk of developing headaches rashes cough and possibly cancer
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Product identifier Hot Mix Asphalt Pavement Chemical Name Mixture CAS No Mixture Trade Name s Petroleum Asphalt / Road Paving Asphalt / Hot Mix Asphalt / Blacktop / Bitumen/ Warm Mix Asphalt / Base Asphalt Pavement Relevant identified uses of the substance or mixture and uses advised against Identified Use s Road Paving AsphaltAccording to the Centers for Disease Control and Prevention CDC asphalt has a complex composition which makes it difficult to pinpoint exactly which chemicals cause the problems Both roofing tar and road asphalt are potentially dangerous and put employees who work with them at risk for injuries on the job site Asphalt Fumes Are Hazardous
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Asphalt fumes are characterized by GC/MS GC TOP Thermo electron with a spilt/splitless injector and a mass spectrometer Automass II quadrupole Voyager Thermo electron The determination of asphalt fume composition is carried out using positive electron ionisation EI I Technical Report Documentation Page I Report No l2 3 kcipientus Accession No I 4 I itle and Subtitk I3ES I I RAC lICES HANDBOOK ON ASPHALT PAVEMENT MAINTENANCE 7 Aiitlior s M Johnson PE 9 I ctfotming Organization Namc and Address Professional Fngineering Services L td
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According to the Centers for Disease Control and Prevention CDC asphalt has a complex composition which makes it difficult to pinpoint exactly which chemicals cause the problems Both roofing tar and road asphalt are potentially dangerous and put employees who work with them at risk for injuries on the job site Asphalt Fumes Are HazardousJul 09 32 CRUSHED ASPHALT PAVEMENT Revision 9 July Page 2/6 Other Substances in the product which may present a health or environmental hazard or which have been assigned occupational exposure limits are detailed below Please see Section 8 of SDS for more details
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