蒙古国橡胶沥青的使用研究

发布时间：2025-03-26 18:31

　　随着全球的工业化和发展,每年机动车数量不断增加,会产生数百万的旧轮胎。每年全球轮胎销售量约有14亿个。由于产量大且耐用性有限,这些轮胎成为了最大和最有问题的废物来源之一。许多研究项目和现场应用证明,在沥青中添加胶粉改性剂是提高沥青性能等级和提高沥青性能的有效方法。这也为废弃轮胎的处理提供了一个环保的选择。在本研究中,研究了利用碎橡胶来提高沥青混合料性能的可能性。除此之外,本研究旨在探讨添加不同比例的胶粉对沥青混合料性能的影响,并与国内外规范进行比较。研究还旨在确定热拌沥青中添加胶粉的最佳重量百分比。在沥青混合料中加入橡胶屑(0.6 mm)。采用马歇尔混合料设计程序,首先确定最佳沥青含量(OBC),然后进一步测试改性后混合料的性能。本研究中共制备了(30)个样品,12个样品用于测定OBC,其余样品用于研究添加不同比例的橡胶屑对沥青混合料的影响。按沥青混合料重量计,OBC为5.4%。除对普通沥青混合料进行试验外,还对添加了四种重量百分比胶粉的混合料集料进行了试验(10%、15%、20%、25%和30%)。试验包括稳定性、体积密度、流量和空隙率的测定。结果表明,胶粉可以方便地作为沥青混合料的改...

【文章页数】：84 页

【学位级别】：硕士

【文章目录】：
摘要
ABSTRACT
CHAPTER 1 INTRODUCTION
    1.1. Background
    1.2. Research objective
    1.3. Problem statement
    1.4. Literature review
    1.5. Research methodology
    1.6. Flowchart of study
CHAPTER 2 ASPHALT MIXTURE PROPERTIES
    2.1. Objectives of asphalt paving mix design
    2.2. Asphalt mixture behavior
    2.3. Recycled Tire Rubber as engineering material
    2.4. Tire composition
    2.5. Asphalt types
    2.6. Conventional asphalt
    2.7. Modified asphalt
    2.8. Polymer modified asphalt
    2.9. Rubber modified asphalt (RMA)
    2.10. Strengths of rubberized asphalt
    2.11. Weaknesses of rubberized asphalt
    2.12. Costs for rubberized asphalt
    2.13. Production methods
    2.14. Job Mix formula
    2.15. Conventional process
    2.16. Rubber modified process
        2.16.1. Wet process
        2.16.2. Dry process
    2.17. Deformation types
CHAPTER 3 MEASUREMENT TAKEN IN THE STUDY
    3.1. Grinding Process and CRM Asphalt
    3.2. Optimum Rubber Content
    3.3. Asphalt mix types
    3.4. Density or Specific Gravity
    3.5. Void related parameters
    3.6. Voids in the Mineral Aggregates (VMA)
    3.7. Voids Filled with Air (VFA)
    3.8. Asphalt mix design
    3.9. Materials
    3.10. Selection method process technique of crumb rubber modification
CHAPTER 4 MATERIALS AND EXPERIMENTAL PROGRAM
    4.1. Introduction
    4.2. Laboratory test procedure
    4.3. Materials collection
    4.4. Materials properties
    4.5. Number of samples required:
    4.6. Materials properties
    4.7.Testing program
CHAPTER 5 RESULT AND DATA ANALYSIS
    5.1. Introduction
    5.2. Blending of aggregates
    5.3. Optimum bitumen content
    5.4. Effect of adding Crumb Rubber on the mechanical properties of asphalt mix
    5.5. MEPDG Rutting Prediction Methodology for flexible pavements
    5.6. Calculation of MEPDG Rutting Prediction
CHAPTER 6 CONCLUSION AND RECOMMENDATIONS
    6.1. Conclusions
    6.2. Recommendations
    6.3. Future studies
    6.4. Environmental Benefits
ACKNOWLEDGMENTS
REFERENCES



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