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研究生： 方荻妲
Dita Adelafani
論文名稱： 評估不同瀝青混凝土吸音性質與平均紋理深度之研究
Evaluate the Sound Absorption and Mean Profile Depth in Different Asphalt Mixture Design
指導教授： 陳世晃
Shih-Huang Chen
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2021
畢業學年度： 109
語文別： 英文
論文頁數： 117
中文關鍵詞： 測試道路 、吸音係數 、平均值紋理深度 、配合設計 、細粒料稜角率
外文關鍵詞： Test track, sound absorption, mean profile depth, mixture design, fine aggregate angularity
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    • 摘要

    交通噪音被發現是社會和生活品質中存在問題的領域之一，因為它會導致環境問題而受到更多關注，根據《噪音控制法》等世界範圍內不斷演進的法規，測試場地標準將成為未來車輛和輪胎噪音測試的重要部分，上述可以遵循 ISO 10844:2014 在測試車道上測量行駛的車輛來實現。ISO 10844內指的路面為密級配熱拌瀝青混凝土鋪面，車道吸音係數要求不超過 0.8，平均剖面深度 (Mean Profile Depth, MPD)標準範圍介於0.3 ± 0.2 mm。本研究通過幾種混合料配合設計和實驗室超級鋪面旋轉式壓實機 (Superpave gyratory compactor, SGC) 壓製試體，評估兩種不同細骨料稜角率、三種不同級配和三種不同空隙率對聲學性能和表面紋理性能的影響，測量結果符合ISO 10844對吸音係數和MPD之要求，本研究建議使用粗和中等兩種級配，其吸音係數和MPD皆有滿意的結果，而細級配往往具有較低的MPD。空隙率、級配曲線、細粒料稜角率與吸音係數呈正相關，同時，粗級配曲線是唯一與MPD呈現高度相關性的參數。本研究發現，可能是因為兩種混合物為達到目標空隙率而使用的壓實圈數不同，細骨料稜角率性能顯示出與早期研究相反的結果，因此，它會影響紋理性能。

    關鍵詞: 測試道路, 吸音係數, 平均值紋理深度, 配合設計, 細粒料稜角率

    Abstract

    Traffic noise is found to be one of the problematic areas in society and quality of life that gained greater attention as it contributes to an environmental problem. According to the Noise Control Act and other regulations worldwide that continue to evolve, test track standard will become an essential element of the vehicle and tire noise testing in the future. Those can be achieved by measuring the driven vehicle on a test track which is following the ISO 10844:2014. An ISO 10844 surface is intended to be a dense-graded hot-mix asphalt pavement with a sound absorption requirement not exceed 0.8 for the drive lane and 0.3 ± 0.2 mm for the mean profile depth (MPD) standard range. This study aimed at evaluating the influence of 2 different fine aggregate angularity, 3 different gradations lies in the ISO 10844 regulation and 3 different air voids through the several mixture designs and the laboratory mixed and compacted specimen using Superpave gyratory compactor (SGC) on the acoustic performance and surface texture performance which represented as sound absorption coefficient and MPD to comply with the ISO 10844 requirement. Coarse gradation and mediocre gradation of both mixtures are recommended as show the satisfaction result on sound absorption and MPD, while the fine gradation tends to have low MPD. Air void, gradation, and fine aggregate angularity are found to be positively correlated with sound absorption. Meanwhile, a moderate correlation between air void and MPD only found at coarse gradation. In this study, the fine aggregate angularity performance shows the opposite result with the earlier findings possibly due to the different gyration number of compactions that the both mixtures get for reaching the air void target; thus, it interfiled the texture performance.
    Keywords: Test track, sound absorption, mean profile depth, mixture design, fine aggregate angularity.

    Table of Contents Cover Abstract i Acknowledgement iii Table of Contents iv List of Figures vi List of Tables ix Chapter 1 Introduction 1 1.1. Research Backgrounds 1 1.2. Research Objectives 3 1.3. Research Scopes 3 Chapter 2 Literature Review 4 2.1. Test Track 4 2.1.1 Test Track Section 4 2.1.2 Surface Properties of Test Track 5 2.2. Sound Absorption 6 2.2.1 Factors Affect Sound Absorption 7 2.3. Surface Texture 14 2.3.1 Difference of Mean Profile Depth and Mean Texture Depth 15 2.3.2 Factors Affect Surface Texture 16 2.4. Aggregate Angularity Characteristic on Mixture Performance 21 2.5. Parameters Used for This Research 22 Chapter 3 Methodology 23 3.1. Research Flowchart 23 3.2. Methodology Scope 25 3.3. Material Properties 26 3.3.1 Physical Properties of Aggregate 26 3.3.2 Physical Properties of Asphalt Binder 30 3.4. Experimental Design 30 3.5. Laboratory Performance 31 3.5.1 Maximum Specific Gravity and Density 31 3.5.2 Bulk Specific Gravity 32 3.5.3 Mean Profile Depth 33 3.5.4 Sound Absorption 35 Chapter 4 Result and Discussion 37 4.1. Material Properties 37 4.1.1 Aggregate Physical Properties 37 4.1.2 Asphalt Binder Properties 39 4.2. Experimental Design 40 4.3. Laboratory Performance 42 4.3.1 Sound Absorption Test 42 4.3.2 Mean Profile Depth Test 54 4.3.3 Compaction Performance Between Different Mixtures 66 Chapter 5 Conclusions and Recommendations 72 5.1. Conclusions 72 5.2. Recommendations 73

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