沥青胶浆粘度特性研究

李平; 张争奇; 孙鸿伟; 王秉纲

沥青胶浆粘度特性研究

1.
长沙理工大学公路工程学院，湖南长沙 410076
2.
长安大学特殊地区公路工程教育部重点实验室，陕西西安 710064

基金项目:

国家自然科学基金项目 50478095

国家西部交通建设科技项目 200631881221

详细信息

作者简介:
李平(1978-), 男, 山东潍坊人, 长沙理工大学讲师, 博士, 从事道路工程研究

中图分类号: U414.1
计量
- 文章访问数: 373
- HTML全文浏览量: 62
- PDF下载量: 542
- 被引次数: 0
出版历程
- 收稿日期: 2007-08-18
- 刊出日期: 2008-04-25

Research on viscosity property of asphalt mortar

1.
School of Highway Engineering, Changsha University of Science and Technology, Changsha 410076, Hunan, China
2.
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China

More Information

Author Bio:
Li Ping(1978-), male, PhD, lecturer, +86-731-2309573, lipingchd@126.com

摘要

摘要: 为研究矿粉对沥青胶浆粘度性能的影响, 利用布氏粘度计测试了不同填料类型和粉胶比的胶浆粘度, 分析了胶浆粘度的影响因素。分析结果表明: 不同类型矿粉配制的胶浆粘度有4.7倍的差距, 并随着粉胶比的增大差距更加明显; 掺加矿粉能够降低沥青胶浆的感温性, 但是变化幅度受到矿粉类型及剂量的综合作用; 矿粉类型的变化导致混合料施工温度有近30℃的差别。可见, 有必要根据矿粉性质指标筛选矿粉类型, 减小其对沥青混合料性能的不良影响; 同时需修正现行混合料施工温度确定方法, 以考虑矿粉的作用。
- 路面工程 /
- 沥青胶浆 /
- 粘度 /
- 施工温度
Abstract: In order to analyze the influence of mineral power on asphalt mortar viscosity, Brookfield viscometer was used to test the viscosities of asphalt mortars with different filler types and filler bitumen ratios, and the influencing factors were studied.Test result shows that there is 4.7 times gap among the viscosities of different mortars, and the gap is bigger with the increase of filler bitumen ratio; adding mineral power can reduce the temperature sensitivity of the mortar, but which is affected by mineral power type and dosage; the difference of construction temperatures among different asphalt mortars can reach about 30 ℃.So it is necessary to filtrate the mineral power type according to mineral power character for reducing the bad effect on asphalt mixture performance, and modify the determination method of active mixture construction temperature for considering the function of mineral power.
- pavement engineering /
- asphalt mortar /
- viscosity /
- construction temperature

HTML全文

图 1 粘度随温度的变化

Figure 1. Change of viscosities witht temperatures

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图 2 不同粉胶比下胶浆粘度

Figure 2. Mortar viscosities with different filler bitumen ratios

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图 3 不同胶浆衰减比例

Figure 3. Attenuation proportions of different mortars

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图 4 2号胶浆衰减比例

Figure 4. Attenuation proportions of No 2 mortar

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图 5 5号胶袋衰减比例

Figure 5. Attenuation proportions of NO 5 mortar

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表 1 胶浆粘度

Table 1. Mortar viscosities Pa·s

粉胶比	矿粉类型
粉胶比	1	2	3	4	5
0.0	0.422	0.422	0.422	0.422	0.422
0.4	0.730	0.659	0.660	0.852	0.655
0.8	1.207	1.056	1.045	1.935	1.018
1.2	2.780	1.855	2.060	8.750	2.280
1.6	9.940	4.340	5.225	27.700	5.520
2.0	24.500	9.050	12.850	103.000	11.900

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表 2 沥青及胶浆粘温指数

Table 2. V_TS of asphalt and mortars

指标	类型
指标	基质沥青	1	2	3	4	5
V_TS	-3.226	-2.690	-2.842	-2.738	-2.392	-2.569

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表 3 沥青胶浆粘温指数

Table 3. V_TS of asphalt mortars

指标	粉胶比
指标	0.8	1.2	1.6
V_TS	-3.007	-2.842	-2.666

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表 4 沥青在不同温度时粘度

Table 4. Viscosities of asphalt at different temperatures

指标	温度/℃
指标	125	145	175
粘度/(Pa·s)	1.220	0.422	0.128

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表 5 不同胶浆实际粘度

Table 5. Practical viscosities of different mortars Pa·s

胶浆类型	沥青施工温度/℃
胶浆类型	170.6	165.2	159.0	154.4
1	0.865	1.127	1.527	1.913
2	0.567	0.739	1.001	1.254
3	0.675	0.875	1.179	1.471
4	2.176	2.837	3.847	4.821
5	0.751	0.961	1.274	1.570

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表 6 不同胶浆的施工温度

Table 6. Construction temperatures of different mortars

胶浆类型	施工温度
胶浆类型	拌和温度范围/℃		压实温度范围/℃
2	165.2	170.2	154.4	159.0
1	173.8	179.2	163.0	167.6
3	168.7	174.2	157.7	162.4
4	192.6	198.0	181.8	186.4
5	171.0	176.8	159.3	164.3

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表 7 粉胶比对施工温度的影响

Table 7. Influence of filler bitumen rations on construction temperatures

粉胶比	拌和温度范围/℃		压实温度范围/℃
0.8	154.5	160.0	143.5	148.2
1.2	165.2	170.6	154.4	159.0
1.6	178.8	184.0	168.3	172.8

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