bi
tu
men
复数形式
bitumens
1
沥青, 天然沥青
any of various naturally occurring impure mixtures of hydrocarbons
2
沥青, 柏油
a thick, black or dark brown substance made from petroleum that is used to make roads and roofs
Bitumen is a thick, black, sticky substance that is often used in construction and paving. It is a form of petroleum and is commonly found in road construction as an adhesive material for asphalt. Bitumen is also used for waterproofing, sealing roofs, and as a protective coating for pipes. It is known for its durability and resistance to water and weathering, making it ideal for applications that require a strong, weather-resistant seal. It can be applied in liquid form or as solid sheets and is heated before use to make it easier to work with.