Article
Construction & Building Technology
Jinshun Xue, Yingjun Jiang, Yuanbiao Zheng, Shaohui Xiong
Summary: This study investigates the effects of the composition of various dispersed systems on the performance of stone mastic asphalt (SMA) mixture, based on mortar theory. The optimal gradation composition of coarse aggregates and the recommended ratios of mineral filler-to-asphalt and fine aggregate-to-asphalt mortar are proposed. The results show that the performance of the SMA-13 mixture is positively correlated with reserved air void (V-0) and primary control sieve passing rate, and can be improved by more than 10% with the suggested gradation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Jiasheng Li, Jianying Yu, Shaopeng Wu, Jun Xie
Summary: Using steel slag as a component in asphalt mixture is an effective way to treat solid waste. Low content of steel slag can improve the deformation and skid resistance of the mixture, and the mixture still meets pavement technical requirements after long-term heavy loading.
Article
Polymer Science
Kuo Ji, Changchun Shi, Jing Jiang, Yaogang Tian, Xiaowei Zhou, Rui Xiong
Summary: This study aimed to predict the long-term skid resistance of steel slag asphalt mixture (SSAM) based on the mineral composition of the aggregates. The polished stone value (PSV) and mineral composition were assessed, and a multivariate linear model was established to relate PSV with hardness (H) and surface texture richness (STR). Furthermore, the British pendulum number (BPN) and three-dimensional morphology of SSAM were evaluated, and an exponential relationship was established between BPN, aggregate PSV, and different aggregate amounts of SSAM. Overall, the mathematical model developed can help designers predict the long-term skid resistance of SSAM and determine the optimal steel slag content.
Article
Construction & Building Technology
Kuo Ji, Rui Xiong, Jing Jiang, Xiaobin Li, Yaogang Tian, Xiaohui Yan, Haoyu Wang
Summary: This study aimed to analyse the attenuation law of skid resistance of steel slag asphalt mixture (SSAM) based on differential wear. An indoor accelerated wear instrument was used to accelerate the wear of the SSAM surface, and the three-dimensional morphology and dynamic friction coefficient (mu) of SSAM were measured. The improvement mechanism of steel slag on the skid resistance of SSAM was expounded. The results showed no linear relationship between the amount of steel slag and the improvement of SSAM skid resistance.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Construction & Building Technology
H. L. Wang, J. S. Qian, J. Liu, X. L. Nan, S. Z. Qu, X. M. Li, Y. Liu
Summary: This study evaluated the wear resistance of two steel slag samples and compared them with three stone aggregates. The results showed that the steel slag samples had superior hardness and wear resistance compared to limestone and granite aggregates, as well as a rougher surface and more contact points. These findings suggest that steel slag can be used as a wearing course material for highway asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Pei Liu, Deng-Fung Lin, Wei-Jhu Wang
Summary: This study compared the effects of two different dosages of slag aggregate replacement on the performance of asphalt concrete. It was found that mixed slag aggregate replacement can improve the performance of asphalt concrete pavement, with BOF6 + BOF3 mixture showing better mechanical properties and BOF3 + TRD mixture exhibiting better heat conduction and skid resistance.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Construction & Building Technology
Jianhui Wei, Tao Fu, Junlin Liang
Summary: The study found that temperature and aging affect the fracture performance of LSAM, with the fracture energy of crack growth higher than that of crack initiation. Moreover, decreasing temperature, increasing loading rate, or aging can to a certain extent increase the fracture energy.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Song Li, Ziming Liu
Summary: This study aims to improve the skid resistance of pavement by using bauxite as a coarse aggregate. The results show that bauxite has high comprehensive skid resistance and its long-term skid resistance can be predicted using a regression model. This study is of great significance for ensuring the demand of pavement and mitigating environmental challenges.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Bernardita Lira, Jonas Ekblad, Robert Lundstrom
Summary: Aggregate gradation plays a key role in the response of asphalt mixtures to loading, particularly in resistance to permanent deformation. This study evaluated the capability of a gradation-based framework to assess permanent deformation susceptibility, finding that there is a non-significant relationship between framework parameters and resistance to permanent deformation. Additionally, the study revealed that testing methods and the total amount of coarse material also have an impact on mixture resistance to permanent deformation.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Materials Science, Characterization & Testing
Nabanita Roy, Ravi Pal, Thavamani Andiyappan, Kranthi K. Kuna
Summary: The objective of this study was to investigate the effect of blending steel slag aggregates with natural aggregates on the polishing resistance of asphalt pavement surfaces. The laboratory and field testing results showed that blending steel slag aggregates improved the polishing resistance, and field models were developed for pavement life prediction.
JOURNAL OF TESTING AND EVALUATION
(2023)
Article
Environmental Sciences
Sang Hyun Kim, Seulki Jeong, Hyeonyong Chung, Kyoungphile Nam
Summary: A basic oxygen furnace (BOF) slag was effective in stabilizing lead in mine waste, with efficiency affected by slag and water contents. X-ray photoelectron spectroscopy suggested that precipitation and adsorption mechanisms were involved in stabilization. The increase in BOF slag content enhanced adsorption mechanism, while the increase in water content facilitated precipitation mechanism.
Article
Construction & Building Technology
Ping Li, Keliang Yi, Huanan Yu, Jianping Xiong, Rui Xu
Summary: This research evaluated the impact of aggregate characteristics on pavement skid resistance through laboratory tests and data analysis. It was found that the mineral composition, wear-resistance property, and shape of aggregates have a significant influence on skid resistance. Suggestions were made to improve aggregate processing technology for better pavement skid resistance.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Jun Jiang, Xiaolei Lu, Teng Niu, Yueyang Hu, Jiaming Wu, Wenyu Cui, Degang Zhao, Zhengmao Ye
Summary: In this study, BOF slag was successfully utilized as a replacement for lime in AAC, reducing the bulk density without sacrificing mechanical performance. The addition of BOF slag hindered the formation of xonotlite and facilitated the generation of tobermorite.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Ying Gao, Kun Hou, Yanshun Jia, Ziyao Wei, Shaoquan Wang, Zhuoran Li, Fan Ding, Xiwei Gong
Summary: The study focused on the variability of gradation for asphalt mixtures, experimenting with different aggregate sizes and establishing correlations between gradation and performance through various methods. The feasibility of digital image processing technology in detecting gradation was verified through the experiments.
AUTOMATION IN CONSTRUCTION
(2021)
Article
Construction & Building Technology
A. M. Kaja, A. Delsing, S. R. van der Laan, H. J. H. Brouwers, Qingliang Yu
Summary: This study investigates the leaching of heavy metals from activated BOF slag pastes after carbonation, focusing on the influence of activator dosage and type. Results show that higher brownmillerite hydration increases heavy metal leachability, while optimizing activator dosage can enhance carbonation resistance of the pastes, thereby preventing heavy metal leaching.
CEMENT AND CONCRETE RESEARCH
(2021)
