关于沥青感温性指标的讨论

陈佩茹; 刘炤宇

关于沥青感温性指标的讨论

同济大学道路与交通工程系, 上海 200092

详细信息

作者简介:
陈佩茹(1972-), 女, 河北石家庄人, 同济大学硕士, 从事沥青性能研究

中图分类号: U414.75
计量
- 文章访问数: 354
- HTML全文浏览量: 116
- PDF下载量: 218
- 被引次数: 0
出版历程
- 收稿日期: 2002-01-14
- 刊出日期: 2002-06-25

On indices of temperature susceptibility of asphalt

Department of Road and Traffic Engineering, Tongji University, Shanghai 200092, China

More Information

Author Bio:
CHEN Pei-ru (1972-), female, master of Tongji University, specialized in performance of asphalt

摘要

摘要: 针入度指数PI和当量软化点T₈₀₀是中国评价沥青感温性的指标。选取四种常规沥青, 在两种试验条件下测量了五个温度的针入度, 回归了四种不同温度组合的PI值和T₈₀₀, 讨论了影响PI值和T₈₀₀的一些因素; 同时还将T₈₀₀与软化点、美国SHRP的PG分级高温指标G^*/sinδ进行了对比。最后对根据“八五”攻关建议的常规沥青分级标准所确定的四种沥青的高温等级进行了探讨
- 沥青 /
- 针入度指数PI /
- 当量软化点T₈₀₀
Abstract: In China, penetration index PI and equivalent softening point T₈₀₀ are utilized to evaluate the temperature susceptibility of asphalt. The penetration of four kinds of asphalt at five kinds of temperature is measured under two test conditions. PI and T₈₀₀ in four combinations of five kinds of temperature are obtained through regression, and their influenced factors are discussed.Moreover, T₈₀₀ and softening point are compared to G^*/sinδ, high thermal index in PG gradation of SHRP. According to recommendation of asphalt grade criterion in the Eighth Five year National Plan, high thermal grade of four kinds of asphalt is analyzed.
- asphalt /
- penetration index PI /
- equivalent softening pointT₈₀₀

HTML全文

图 1 预冷条件下四种沥青的PI排序

Figure 1. PI sorting of four kinds of asphalt with pre-cooling

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图 2 预冷条件下四种沥青T₈₀₀排序

Figure 2. T₈₀₀ sorting of four kinds of asphalt with pre-colling

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图 3 非预冷条件下四种沥青的PI排序

Figure 3. PI sorting of four kinds of asphalt with non-pre-cooling

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图 4 非预冷条件下四种沥青的T₈₀₀排序

Figure 4. T₈₀₀ sorting of four kinds of asphalt with non-pre-cooling

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表 1 沥青样品

Table 1. Samples of asphalt

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表 2 感温性参数计算结果

Table 2. Calculating results of temperature-susceptibility

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表 3 预冷试验条件下感温参数对比

Table 3. Indices comparision of temperature-susceptibility of asphalt with pre-cooling

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表 4 非预冷试验条件下感温参数对比

Table 4. Indices comparision of temperature-susceptibility of asphalt with non-cooling

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表 5 沥青动态剪切试验数据表

Table 5. Dynamic shearing test data of asphalt

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表 6 典型常规指标间的对比分析

Table 6. Classic routine indices comparision

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表 7 四种试样的高温等级

Table 7. Grade of four kinds of asphalt at high temperature

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参考文献(2)

[1]	沈金安. 用国外最新标准对道路沥青技术指标的验证报告[R]. 北京: 交通部公路科学研究所, 1995.
[2]	(JTJ052-2000) 公路工程沥青及沥青混合料试验规程[S]. 北京: 人民交通出版社, 2000.