Construction Safety
Transcript: Lime, Naphtha, Portland Cement Portland-Cement cement that is manufactured from limestone and clay and that hardens under water. Lime A white caustic alkaline substance consisting of calcium oxide, obtained by heating limestone. Naphtha a flammable oil containing various hydrocarbons, obtained by the dry distillation of organic substances such as coal, shale, or petroleum. Hazards? Uses In The Industry? OSHA - https://www.osha.gov/dts/chemicalsampling/data/CH_260900.html CDC - http://www.cdc.gov/niosh/npg/npgd0492.html OSHA - https://www.osha.gov/dsg/guidance/cement-guidance.html CDC - http://www.cdc.gov/niosh/npg/npgd0093.html http://www.cement.org/cement-concrete-basics/how-cement-is-made Naphtha - Eye protection, gloves of nitrile or neoprene, adequate ventilation, chemical protective clothing Naphtha - http://www.collectioncare.org/MSDS/naphthamsds.pdf Portland Cement - Contains trace amounts of hexavalent chromium [Cr(VI)], a toxin harmful to the skin. - Skin problems: Cement burns (blisters, dead or hardened skin, or black or green skin), Dermatitis (inflammation), and ACD (allergic contact dermatitis). Lime - Irritation of the eyes and skin, Upper respiratory tract infection, Ulcers, Nasal septum perforation (hole in cartilage, Pneumonitis, Dermatitis. Naphtha - Irritation of the eyes, nose, and throat; Dizziness, Drowsiness, Headaches, Nausea, Dry cracked skin, Pneumonitis Protection Against It? Portland Cement - The basic ingredient of concrete. Concrete is formed when portland cement creates a paste with water that binds with sand and rock to harden Construction Safety Portland Cement - water-proof gloves, long sleeves, pants, and eye protection Works Cited Dictionary - http://dictionary.reference.com/browse/naphtha Lime - long sleeve shirt, pants, boots, hat, gloves, protective cream on exposed skin, filter mask, eye protection Lime - A versatile material in the construction of buildings. It can be used in the construction of masonry systems as a component of mortar or of the masonry unit. Exterior (stucco) and interior plaster systems can also contain lime What Is It? Naphtha - A flammable liquid hydrocarbon mixture that is commonly found in paint thinners and gasoline Cement - http://www.cement.org/for-concrete-books-learning/concrete-technology/concrete-construction