Scholarlink

<p>Large quantities of hazardous by-product are produced by the automobile industry. Among these, automotive paint sludge is a major industrial waste generated during vehicle coating and finishing processes. The disposal of automotive paint sludge poses serious challenges. Using paint sludge as modifier in bituminous mixes can reduce disposal problems and enhance mechanical properties of the mix. However, current research on its reuse in road construction is limited. Thus, this study used paint sludge as a partial replacement of bitumen at 3%, 5%, 7% and 9% in bituminous mixtures. The objective is to investigate its effect on mechanical performance, volumetric behaviour and the microstructural behaviour. Bituminous concrete mixes were designed with Marshall method and tested for stability, flow, density and volume parameters. Results manifested that moderate incorporation of paint sludge specially 5–7% enhanced the stability and density while maintaining flow within acceptable limits. SEM analysis showed better bonding between binder and aggregates with moderate paint sludge levels which agreed with the mechanical test results. XRD analysis revealed presence of minerals such as TiO<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(_2\)</EquationSource> </InlineEquation>, CaCO<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(_3\)</EquationSource> </InlineEquation>, and SiO<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(_2\)</EquationSource> </InlineEquation>. These minerals played role of micro-fillers and improved stiffness at the optimum paint sludge content. In order to validate these findings, Multi-Criteria Decision-Making (MCDM) was employed. Six performance criteria were assessed and it was concluded that paint sludge mix 7% ranked as the most balanced. This ranking agreed with the experimental observations. Overall, it was observed that the paint sludge improved the performance of bituminous mix. At the same time, it reduced waste disposal problems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Utilization of industrial paint sludge waste in bitumen mixes for flexible pavements

  • 期刊论文

  • 发表日期：

    2026年4月13日

查看全文
  • Archana Tanawade,
  • Sagar Sonawane,
  • Srushti Chavhan,
  • Shravan Wable,
  • Isha Jumale

摘要

Large quantities of hazardous by-product are produced by the automobile industry. Among these, automotive paint sludge is a major industrial waste generated during vehicle coating and finishing processes. The disposal of automotive paint sludge poses serious challenges. Using paint sludge as modifier in bituminous mixes can reduce disposal problems and enhance mechanical properties of the mix. However, current research on its reuse in road construction is limited. Thus, this study used paint sludge as a partial replacement of bitumen at 3%, 5%, 7% and 9% in bituminous mixtures. The objective is to investigate its effect on mechanical performance, volumetric behaviour and the microstructural behaviour. Bituminous concrete mixes were designed with Marshall method and tested for stability, flow, density and volume parameters. Results manifested that moderate incorporation of paint sludge specially 5–7% enhanced the stability and density while maintaining flow within acceptable limits. SEM analysis showed better bonding between binder and aggregates with moderate paint sludge levels which agreed with the mechanical test results. XRD analysis revealed presence of minerals such as TiO \(_2\) , CaCO \(_3\) , and SiO \(_2\) . These minerals played role of micro-fillers and improved stiffness at the optimum paint sludge content. In order to validate these findings, Multi-Criteria Decision-Making (MCDM) was employed. Six performance criteria were assessed and it was concluded that paint sludge mix 7% ranked as the most balanced. This ranking agreed with the experimental observations. Overall, it was observed that the paint sludge improved the performance of bituminous mix. At the same time, it reduced waste disposal problems.