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Tuckpointing : Nano-Enabled Mortar
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2024
[PDF-347.93 KB]
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Description:Removing mortar with handheld grinders when tuckpointing creates dust containing respirable crystalline silica. Breathing respirable silica can cause lung cancer and scarring of the lungs. OSHA has a standard in construction for silica that includes requirements for controlling workers’ silica exposure and the use of respiratory protection when removing mortar with a handheld grinder.
In some cases, mortar can contain an engineered, or intentionally created, nanomaterial such as graphene. Products that contain engineered nanomaterials are called nano-enabled and are increasingly being used in construction. Graphene and other nanomaterials can be added to mortar, concrete and other such products to make them stronger and more durable, but when workers cut, grind, or sand these nanoenabled materials, dust containing the nanoparticles gets into the air that workers breathe. Nanoparticles are very small, about 100,000 times smaller than the width of a human hair. Some animal studies suggest that graphene could be harmful to the lungs, but the risks to construction workers are not well understood.
TT-nano-enabled_tuckpointing.pdf
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Pages in Document:2 unnumbered pages
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