The adjective 'non-bituminous' describes a substance or material that does not contain or is not derived from bitumen or asphalt. Bitumen, a black, viscous mixture of hydrocarbons, is a key component of asphalt and tar, used extensively in road construction, roofing, and waterproofing. Thus, 'non-bituminous' materials lack the characteristic properties of these materials, such as stickiness, waterproofness, and a high melting point. These materials are often chosen when those specific qualities are undesirable. This exclusion is often due to safety and durability requirements in certain manufacturing applications or environmental conditions.
Non-bituminous meaning with examples
- The construction team used non-bituminous roofing tiles to avoid the strong smell and potential off-gassing of asphalt-based alternatives, especially near the water's edge. The tiles provided effective water resistance, and were easier to repair.
- In the laboratory, researchers analyzed the properties of non-bituminous polymers for use in new types of flexible electronics where a rigid or heat-sensitive substance wouldn't be suited.
- The landscape architect specified non-bituminous paving stones for the public square, prioritizing aesthetics and avoiding the potentially hazardous runoff associated with asphalt in urban areas. The stones are easily cleaned.
- The engineers opted for a non-bituminous sealant for the aircraft's fuselage because they wanted to withstand extreme temperature fluctuations. The sealant was also significantly lighter than traditional options.
- The recycling plant efficiently separated non-bituminous plastics from the bituminous waste streams. This allowed the different materials to be re-used and repurposed separately, reducing environmental impact.