| AC-13沥青混合料冻融劈裂强度的影响因素 |
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| 引用本文： | 陆学元,张素云.AC-13沥青混合料冻融劈裂强度的影响因素[J].重庆交通大学学报(自然科学版),2009,28(2):222-227. |
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| 作者姓名： | 陆学元 张素云 |
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| 作者单位： | 1. 安徽省高速公路总公司,安徽,合肥,230051
2. 安徽交通职业技术学院,安徽,合肥230051 |
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| 基金项目： | 安徽省交通科技进步计划项目 |
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| 摘 要： | 以AC-13 SBS改性沥青混合料为对象,以水稳定性指标为评价依托,研究了未冻融劈裂强度、冻融劈裂强度和冻融劈裂强度比的影响因素和规律性。结果表明,级配因素是控制其冻融劈裂强度变化的主要影响因素,其关键性筛孔为0.075 mm、4.75 mm和9.5 mm筛孔通过率,而沥青影响并非显著;空隙率和原材料质量是控制其水稳定性的又一关键因素;证实了采用消石灰作为填料较其他填料更有利于对冻融劈裂强度值的提高。据此提出了控制设计和施工质量的技术措施和建议。
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| 关 键 词： | 试验设计 统计方法 SBS改性沥青混合料 矿料级配 油石比 冻融劈裂强度 马歇尔性能 |
Factors Affecting Freezing-Thawing Split-Strength for AC-13 Asphalt Mixture |
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| LU Xue-yuan,ZHANG Su-yun.Factors Affecting Freezing-Thawing Split-Strength for AC-13 Asphalt Mixture[J].Journal of Chongqing Jiaotong University,2009,28(2):222-227. |
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| Authors: | LU Xue-yuan ZHANG Su-yun |
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| Institution: | 1.Head Office of Anhui Province Expressway;Anhui Hefei 230051;China;2.Occupation & Technology College of Anhui Province Transportation;China |
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| Abstract: | Taking AC-13 SBS modified asphalt mixture as the research object,the freezing-thawing split-strength,not-freezing-thawing split-strength and TSR are studied based on the estimation of water stability index.The results show that the grading is the main factor of controlling the change of its freezing-thawing split-strength,and the key sieving pores are 0.075mm,4.75mm and 9.5mm respectively;however,the impact of asphalt is not so significant.Porosity and quality of raw materials is another key factor of contr... |
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| Keywords: | test design statistics methods SBS modified asphalt mixture gradation asphalt-aggregate ratio freezing-thawing split-strength Marshall performance |
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