隨著全球的工業(yè)化和發(fā)展,每年機(jī)動(dòng)車數(shù)量不斷增加,會(huì)產(chǎn)生數(shù)百萬的舊輪胎。每年全球輪胎銷售量約有14億個(gè)。由于產(chǎn)量大且耐用性有限,這些輪胎成為了最大和最有問題的廢物來源之一。許多研究項(xiàng)目和現(xiàn)場(chǎng)應(yīng)用證明,在瀝青中添加膠粉改性劑是提高瀝青性能等級(jí)和提高瀝青性能的有效方法。這也為廢棄輪胎的處理提供了一個(gè)環(huán)保的選擇。在本研究中,研究了利用碎橡膠來提高瀝青混合料性能的可能性。除此之外,本研究旨在探討添加不同比例的膠粉對(duì)瀝青混合料性能的影響,并與國內(nèi)外規(guī)范進(jìn)行比較。研究還旨在確定熱拌瀝青中添加膠粉的最佳重量百分比。在瀝青混合料中加入橡膠屑(0.6 mm)。采用馬歇爾混合料設(shè)計(jì)程序,首先確定最佳瀝青含量(OBC),然后進(jìn)一步測(cè)試改性后混合料的性能。本研究中共制備了(30)個(gè)樣品,12個(gè)樣品用于測(cè)定OBC,其余樣品用于研究添加不同比例的橡膠屑對(duì)瀝青混合料的影響。按瀝青混合料重量計(jì),OBC為5.4%。除對(duì)普通瀝青混合料進(jìn)行試驗(yàn)外,還對(duì)添加了四種重量百分比膠粉的混合料集料進(jìn)行了試驗(yàn)(10%、15%、20%、25%和30%)。試驗(yàn)包括穩(wěn)定性、體積密度、流量和空隙率的測(cè)定。結(jié)果表明,膠粉可以方便地作為瀝青混合料的改...

【文章頁數(shù)】：84 頁

【學(xué)位級(jí)別】：碩士

【文章目錄】：
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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