钢渣沥青混合料应用现状

何亮; 詹程阳; 吕松涛; JamesGRENFELL; 高杰; KarolKOWALSKI; JanVALENTIN; 谢君; LidijaRŽEK; 凌天清

doi:10.19818/j.cnki.1671-1637.2020.02.002

钢渣沥青混合料应用现状

doi: 10.19818/j.cnki.1671-1637.2020.02.002

1.
重庆交通大学交通土建工程材料国家地方联合工程实验室，重庆 400074
2.
长沙理工大学特殊环境道路工程湖南省重点实验室, 湖南长沙 410114
3.
ARRB集团有限公司, 维多利亚墨尔本 VIC320
4.
华沙理工大学土木工程学院, 马佐夫舍华沙 00-637
5.
捷克理工大学土木工程学院, 布拉格 16629
6.
武汉理工大学硅酸盐建筑材料国家重点实验室, 湖北武汉 430070
7.
斯洛文尼亚国家建筑和土木工程研究院沥青与沥青基产物实验室，卢布尔雅那 SI100

基金项目:

中国-波兰政府间科技合作项目 37-135

中国-捷克政府间科技合作项目 43-9

国家自然科学基金项目 51611130189

重庆市研究生科研创新项目 CYS19238

特殊环境道路工程湖南省重点实验室开放基金项目 kfj17050

详细信息

作者简介:
何亮(1983-), 男, 重庆人, 重庆交通大学副教授, 工学博士, 从事路面材料与养护技术研究

中图分类号: U416.217
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出版历程
- 收稿日期: 2019-10-23
- 刊出日期: 2020-04-25

Application status of steel slag asphalt mixture

1.
National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing 400074, China
2.
Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science and Technology, Changsha 410114, Hunan, China
3.
The Australian Road Research Board, Melbourne VIC3207, Victoria, Australia
4.
Faculty of Civil Engineering, Warsaw University of Technology, Warsaw 00-637, Mazowieckie, Poland
5.
Faculty of Civil Engineering, Czech Technical University in Prague, Prague 16629, Czech
6.
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, Hubei, China
7.
The Laboratory for Asphalts and Bitumen-Based Products, Slovenian National Building and Civil Engineering Institute, Ljubljana SI1000, Slovenia

Funds:

China-Poland Inter-Governmental S & T Cooperation Foundation 37-135

CChina-Czech Inter-Governmental S & T Cooperation Foundation 43-9

National Natural Science Foundation of China 51611130189

Chongqing Graduate Student Research Innovation Project CYS19238

Open Fund of Key Laboratory of Special Environment Road Engineering of Hunan Province kfj17050

More Information

Author Bio:
HE Liang(1983-)male, associate professor, PhD, E-mail: heliangf1@163.com

摘要

摘要: 总结了钢渣的物理性质、化学成分及矿物相组成; 分析了影响钢渣体积安定性的因素及其改善措施; 探讨了钢渣沥青混合料的配合比设计方法; 分析了钢渣沥青混合料的路用性能(高温稳定性、低温抗裂性、水稳定性、抗疲劳性、体积安定性、抗滑性)及其功能特性(导电性与微波加热); 研究了钢渣沥青混合料的生态、社会及经济效益; 介绍了国内外的工程应用。研究结果表明: 钢渣可用于沥青混合料, 且应为陈化半年以上的转炉钢渣或电炉钢渣; 钢渣的物理力学性能优良, 而化学成分及矿物相组成受炼钢工艺影响有所区别; 钢渣体积安定性的不足可通过预处理或陈化处理得到较好的改善; 钢渣沥青混合料的配合比设计要点包括钢渣替代传统集料的方式和比例、沥青混合料级配修正、有效相对密度测定以及最佳油石比的确定; 钢渣沥青混合料的路用性能及功能特性优于天然集料沥青混合料, 具有较好的环境影响性且综合经济效益更高; 关于钢渣沥青混合料路用性能的研究较多, 而作用机理方面相对缺乏, 关键性的限制因素如密度较高、体积安定性不良、混合料沥青用量增加等仍未得到根本性解决; 未来应重点研究钢渣沥青路面的长期性能及质量控制体系, 并开展全寿命周期研究, 以加快钢渣沥青路面的应用与推广。
- 路面工程 /
- 钢渣 /
- 沥青混合料 /
- 特征参数 /
- 配合比设计 /
- 路用性能 /
- 环境效益
Abstract: The physical properties, chemical composition and mineral phases of different steel slags were summarized. The factors that affect the volume stability and improvement measures were analysed. The mix design method for steel slag asphalt mixtures was discussed. The road performance(high temperature stability, low temperature crack resistance, moisture susceptibility, fatigue resistance, volume stability, and skid resistance) and functional characteristics(conductivity and microwave heating ability) of steel slag asphalt mixture were all investigated. The benefits of steel slag asphalt mixtures in ecology, society and economy were studied, and the engineering applications at home and abroad were introduced. Research result indicates that certain steel slag can be used for asphalt mixtures, and the steel slag for asphalt mixtures should be the basic oxygen furnace and electric arc furnace aged for more than half a year. The steel slag has excellent physical and mechanical properties, whilst the chemical composition and mineral phase composition are different for each slag type and affected by the steel making process. The lack of volume stability of steel slag can be improved with a pre-treatment or aging treatment. The key points of mix design of steel slag asphalt mixture include the mode and proportion of steel slag that can replace traditional aggregates, the gradation correction of asphalt mixture, the determination of effective relative density and the optimum asphalt-aggregate ratio. The pavement performances and functional properties of steel slag asphalt mixtures are better than those of natural aggregate asphalt mixtures. The use of steel slag asphalt mixture is of benefit to the environment and saves cost.The research on the road performance of steel slag asphalt mixture is additional, but the mechanism of action is relatively lacking. The key limiting factors such as the large density, poor volume stability, and the increasing amount of asphalt mixture have not been fundamentally resolved. In the future, the long-term performance and quality control system of steel slag asphalt pavement should be researched, and the whole life cycle research should be carried out to accelerate the application and promotion of steel slag asphalt pavement.
- pavement engineering /
- steel slag /
- asphalt mixture /
- characteristic parameter /
- mix design /
- pavement performance /
- environmental benefit

HTML全文

图 1 转炉钢渣形貌特征

Figure 1. Morphology features of BOF steel slag

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图 2 电炉钢渣形貌特征

Figure 2. Morphology features of EAF steel slag

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图 3 钢渣矿物相X射线衍射分析结果

Figure 3. XRD analysis results of steel slag mineral phases

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图 4 钢渣扫描电镜结果

Figure 4. SEM results of steel slag

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图 5 钢渣沥青混合料配合比设计流程

Figure 5. Mix design process of steel slag asphalt mixture

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图 6 最佳油石比

Figure 6. Optimum asphalt-aggregate ratios

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图 7 黏结界面SEM结果

Figure 7. SEM results of bonding interfaces

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图 8 沥青混合料低温抗裂性

Figure 8. Low temperature crack resistances of asphalt mixtures

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图 9 不同级配钢渣沥青混合料体积膨胀率

Figure 9. Volume expansion ratios of different grades of steel slag asphalt mixtures

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图 10 钢渣沥青混合料环境影响

Figure 10. Environmental impacts of steel slag asphalt mixtures

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图 11 钢渣分布与产量

Figure 11. Distribution and productions of steel slag

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表 1 转炉钢渣、电炉钢渣、石灰岩及玄武岩性能指标

Table 1. Performance indicators of BOF steel slag, EAF steel slag, limestone and basalt

表 2 转炉钢渣和电炉钢渣化学成分

Table 2. Chemical compositions of BOF steel slag and EAF steel slag

表 3 高温稳定性

Table 3. High temperature stabilities

表 4 水稳定性

Table 4. Water stabilities

表 5 钢渣沥青混合料重金属离子浸出浓度

Table 5. Heavy metal ion leaching concentrations of steel slag asphalt mixtures

重金属离子	重金属离子浸出浓度/(mg·l^-1)
重金属离子	天然集料	钢渣	钢渣沥青混合料1	钢渣沥青混合料2	限定值
Cu	0.063	0.095	0.075	0.083
Cr	0.017	0.024	0.014	0.012	5
Pb	1.910	3.476	1.739	2.535	5
Cd	0.307	0.365	0.377	0.402	1
Ni	0.004	0.002

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