scholarly journals Properties of a Steel Slag–Permeable Asphalt Mixture and the Reaction of the Steel Slag–Asphalt Interface

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3603 ◽  
Author(s):  
Wenhuan Liu ◽  
Hui Li ◽  
Huimei Zhu ◽  
Pinjing Xu
Keyword(s):  
Mineral Composition ◽  
Asphalt Pavement ◽  
Steel Slag ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Tricalcium Silicate ◽  
Dicalcium Silicate ◽  
High Temperature Stability ◽  
X Ray ◽  
Marshall Stability

Steel slag is an industrial solid waste with the largest output in the world. It has the characteristics of wear resistance, good particle shape, large porosity, etc. At the same time, it has good adhesion characteristics with asphalt. If steel slag is used in asphalt pavement, it not only solves the problem of insufficient quality aggregates in asphalt concrete, but can also give full play to the high hardness and high wear resistance of steel slag to improve the performance of asphalt pavement. In this study, a steel slag aggregate was mixed with road petroleum asphalt to prepare a permeable steel slag–asphalt mixture, which was then compared with the permeable limestone–asphalt mixture. According to the Technical Regulations for Permeable Asphalt Pavement (CJJT 190-2012), the permeability, water stability, and Marshall stability of the prepared asphalt mixtures were tested and analyzed. In addition, the high-temperature stability and expansibility were analyzed according to the Experimental Regulations for Highway Engineering Asphalt and Asphalt Mixture (JTG E20-2011). The chemical composition of the steel slag was tested and analyzed by X-ray fluorescence spectrometer (XRF). The mineral composition of the steel slag was tested and analyzed by X-ray diffractometer (XRD). The asphalt was analyzed by Fourier transform infrared spectroscopy (FTIR). The results show that the steel slag asphalt permeable mixture had good permeability, water stability, and Marshall stability, as well as good high-temperature stability and a low expansion rate. The main mineral composition was ferroferric oxide, the RO phase (RO phase is a broad solid solution formed by melting FeO, MgO, and other divalent metal oxides such as MnO), dicalcium silicate, and tricalcium silicate. In the main chemical composition of steel slag, there was no chemical reaction between aluminum oxide, calcium oxide, silicon dioxide, and asphalt, while ferric oxide chemically reacted with asphalt and formed new organosilicon compounds. The main mineral composition of the steel slag (i.e., triiron tetroxide, dicalcium silicate, and tricalcium silicate) reacted chemically with the asphalt and produced new substances. There was no chemical reaction between the RO phase and asphalt.

scholarly journals Microwave Absorption Ability of Steel Slag and Road Performance of Asphalt Mixtures Incorporating Steel Slag

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 663 ◽  
Author(s):  
Baowen Lou ◽  
Zhuangzhuang Liu ◽  
Aimin Sha ◽  
Meng Jia ◽  
Yupeng Li
Keyword(s):  
Microwave Absorption ◽  
Steel Slag ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Microwave Absorber ◽  
Self Healing ◽  
High Temperature Stability ◽  
Road Performance ◽  
On The Road

Excessive usage of non-renewable natural resources and massive construction wastes put pressure on the environment. Steel slags, the main waste material from the metal industry, are normally added in asphalt concrete to replace traditional aggregate. In addition, as a typical microwave absorber, steel slag has the potential to transfer microwave energy into heat, thus increasing the limited self-healing ability of asphalt mixture. This paper aims to investigate the microwave absorption potentials of steel slag and the effect of its addition on road performance. The magnetic parameters obtained from a microwave vector network analyzer were used to estimate the potential use of steel slag as microwave absorber to heal cracks. Meanwhile, the initial self-healing temperature was further discussed according to the frequency sweeping results. The obvious porous structure of steel slag observed using scanning electron microscopy (SEM) had important impacts on the road performance of asphalt mixtures. Steel slag presented a worse effect on low-temperature crack resistance and water stability, while high-temperature stability can be remarkably enhanced when the substitution of steel slag was 60% by volume with the particle size of 4.75–9.5 mm. Overall, the sustainability of asphalt mixtures incorporating steel slag can be promoted due to its excellent mechanical and microwave absorption properties.

The Performance Analysis of Semi-Flexible Pavement by the Volume Parameter of Matrix Asphalt Mixture

2010 ◽  
Vol 168-170 ◽  
pp. 351-356 ◽  
Author(s):  
Qing Jun Ding ◽  
Zheng Sun ◽  
Fan Shen ◽  
Shao Long Huang
Keyword(s):  
Pore Structure ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Flexible Pavement ◽  
High Temperature Stability ◽  
Important Target ◽  
Air Void ◽  
Better Than ◽  
Pavement Material

The volume parameter of matrix asphalt mixture is an important target in the design of the semi-flexible pavement. The research used volume-standar to design four kinds of matrix asphalt mixture, fulfilled mechanics performances and performances of semi-flexible pavement material with different aging, compared with common asphalt mixture and researched the effect by air void and pore structure. It proves that the compacted intensity, high-temperature stability and low temperature bend of the semi-flexible pavement material is better than common asphalt pavement material, the performances of matrix asphalt mixture with high air void is better. As for matrix asphalt mixture with same air void but different pore structure, the performances of homogenous grade design is prior to consecutive grade disign.

Natural Mineral Fiber Improved Asphalt Mixture Performance

2014 ◽  
Vol 638-640 ◽  
pp. 1166-1170 ◽  
Author(s):  
Meng Hui Hao ◽  
Pei Wen Hao
Keyword(s):  
Low Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Natural Mineral ◽  
Mineral Fiber ◽  
Modified Asphalt

Natural mineral fiber with good performances of mechanical properties and environmentally friendly, pollution-free especially have gradually aroused extensive concern. In order to improve the quality of asphalt pavement, explore the applicability of nature basalt fiber in enhanced asphalt mixture performance, this paper investigates two typical asphalt mixtures and contrastive studies pavement performance of asphalt mixture by high temperature stability, water stability, low temperature anti-cracking and fatigue performance between basalt fiber modified asphalt mixture and base asphalt mixture, and then study the basic principle of fiber reinforcing asphalt mixture. The research show that basalt fiber modified asphalt mixture has a better pavement performance than base asphalt mixture, its dynamic stability is 1.6 times than base asphalt mixture, low temperature anti-cracking performance increased by more 25% and fatigue life is more 2 times than base asphalt mixture. And the basalt fiber can be used in the road engineering as an additive material that enhances the comprehensive performance of asphalt pavement.

Experimental Research of Reclamation Performance of Recycled Asphalt Pavement Material at Weihai Area

2012 ◽  
Vol 204-208 ◽  
pp. 3712-3715
Author(s):  
Ben Hui Gong ◽  
Hong Jie Ji ◽  
Peng Jie Wang
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Agent Technology ◽  
High Temperature Stability ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Moisture Susceptibility ◽  
Stability Performance ◽  
Pavement Material

Based on the recycled asphalt pavement material rooted out during road net reconstruction, this paper uses modified rejuvenating agent technology to study the reclamation performance of recycled asphalt pavement material, the mixture is AC-16 designed with new and old asphalt mixture. The results show that modified rejuvenating agent technology can improve the high temperature stability performance, the low temperature crack resistance performance and the moisture susceptibility performance of recycled asphalt pavement material effectively.

Study on Light–Colored Technology of Highway Tunnel Pavement

2010 ◽  
Vol 168-170 ◽  
pp. 211-216 ◽  
Author(s):  
Tian Qing Ling ◽  
Shu Guang Zhang ◽  
Xiu Lei Li
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Experimental Studies ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Bond Performance ◽  
Highway Tunnel

This paper used the method of spread the broken glass and light-colored stone into the asphalt mixture, then rolling to compact, to increase the brightness of the asphalt pavement in highway tunnel. Through a series of tests, we have studied the performance of the light-colored asphalt pavement, including high temperature stability, anti-sliding performance, impermeability, bond performance and the light-colored performance. Experimental studies have shown that the anti-sliding performance, high temperature stability will be lower slightly compared to ordinary asphalt concrete. Its impermeability has increased. The light-colored performance is better. At the same time, after the analysis of the experimental results we know that the improvement of light-colored performance is not only effected by the dosage of the materials, but also has a great relationship with the particle size. In general, the smaller the particle size of the materials joined, the more apparent the light-colored performance improved.

High Temperature Stability of Modified Asphalt Concrete

2013 ◽  
Vol 438-439 ◽  
pp. 391-394 ◽  
Author(s):  
Yuan Zhao Chen ◽  
Zhen Xia Li
Keyword(s):  
High Temperature ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Weak Stability ◽  
Modified Asphalt ◽  
Longitudinal Slope

According to high temperature weak stability of common asphalt mixture, rutting tests of diatomite modified asphalt mixture, modified lake asphalt mixture, modified rock asphalt mixture and common asphalt mixture are carried out. Changes of dynamic stability for common asphalt mixture compared with modified asphalt mixtures are comparatively analysed. The results show that compared with common asphalt mixture, rutting resistances of diatomite modified asphalt mixture, modified lake asphalt mixture and modified rock asphalt mixture are greatly improved. It is proposed that those kinds of modified asphalt mixture are adopted in asphalt pavement of large longitudinal slope section.

The Performance Research of Adjusting Material Based on Asphalt Pavement

2012 ◽  
Vol 253-255 ◽  
pp. 616-620
Author(s):  
Jian Gang Qiao ◽  
Ya Qiong Wang ◽  
Ning Yang
Keyword(s):  
High Performance ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Asphalt Modification ◽  
Road Materials ◽  
Save Energy ◽  
Performance Research

As the construction and development of highway need high performance of road materials, the conventional asphalt mixture is difficult to meet the requirements. To save energy, the paper researches into adjusting agent, asphalt modification, fiber and rubber powder, analyzes performance characteristics of different adding methods, adding materials and adding quantities through comparative and experimental analysis, and obtains superior high temperature stability and low temperature stability of asphalt mixture with adjusting agent compared with modified asphalt mixture, which explores a new idea for the application of waste materials in highway construction.

Research of Asphalt Mixtures High Temperature Stability

2013 ◽  
Vol 405-408 ◽  
pp. 1871-1874
Author(s):  
Gen Chuan Luo
Keyword(s):  
High Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Influence Factors ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Air Voids ◽  
Asphalt Content ◽  
The Stability

Rutting is one of the most hazardous damage form of asphalt pavement.But,owing to itself inherent in the viscoelastic characteristics of asphalt mixture,the diversity of factors influencing the high temperature of asphalt pavement anti-rutting performance and the complexity of rut formation,this three reasons make ruts become a worldwide problem.Starting from the mixture.This article analyzed the influence factors of the rutting resistance of asphalt mixture at high temperature.For asphalt mixture, through the experimental data, the research status at home and abroad, from the type of asphalt, asphalt content, grading of aggregates and air voids four aspects analysis and study the influence factors of the stability of asphalt mixture at high temperature.

Study on High Temperature Stability Index of Asphalt Mixture

2014 ◽  
Vol 513-517 ◽  
pp. 336-339
Author(s):  
Fu Ming Liu
Keyword(s):  
High Temperature ◽  
Dynamic Stability ◽  
Asphalt Pavement ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Stability Index ◽  
High Temperature Stability

High temperature stability of asphalt mixture is one of asphalt pavement major performance which concerns the permanent deformation of the pavement. Four different gradations were used to detect the mixture high temperature stability, dynamic stability or short for rut distortion for regress time was obtained from regression for the data of rutting test, and the test indicates that either of these two indexes can better characterize high temperature stability of asphalt mixture.

High Temperature Stability of Asphalt Mixture Research

2013 ◽  
Vol 361-363 ◽  
pp. 1847-1850
Author(s):  
Hong Bao Li ◽  
Yan Qing An
Keyword(s):  
High Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Influence Factors ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Air Voids ◽  
Asphalt Content ◽  
Viscoelastic Characteristics ◽  
The Stability

Rutting is one of the most hazardous damage form of asphalt pavement.But,owing to itself inherent in the viscoelastic characteristics of asphalt mixture,the diversity of factors influencing the high temperature of asphalt pavement anti-rutting performance and The complexity of rut formation,this three reasons make ruts become a worldwide problem.Starting from the mixture, This article analyzed the influence factors of the rutting resistance of asphalt mixture at high temperature.For asphalt mixture, through the experimental data, the research status at home and abroad, from the type of asphalt, asphalt content, grading of aggregates and air voids four aspects analysis and study the influence factors of the stability of asphalt mixture at high temperature.

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