Article
Chemistry, Physical
Hao Xu, Mingzhi Sun, Guobao Luo
Summary: This paper aims to evaluate the feasibility of replacing limestone powder (LP) with steel slag powder (SSP) to enhance the heat release and self-healing properties of asphalt and asphalt mixtures. The microwave-heating characteristics and microstructure differences between SSP and LP were analyzed. The optimal healing temperature was determined through tests, and effects on temperature distribution and healing properties were explored. Results showed that SSP-containing asphalt mixtures had excellent microwave absorption capacity and increased healing index compared to conventional mixtures. Temperature was found to be the most important factor affecting healing behavior.
Article
Thermodynamics
Yanfang Song, Zhe Wang, Yan Zhou, Rong Hu
Summary: The study shows that microwave heating can restore the flexural and tensile properties of modified steel slag asphalt mixtures, but the recovery effects vary among different mixtures. The post-modification steel slag asphalt mixture has an improved repair effect after microwave heating compared to the pre-modification mixture.
ADVANCES IN MECHANICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Jianan Liu, Zhenjun Wang, Haoyan Guo, Fengfeng Yan
Summary: This study investigates the use of hot poured steel slag (HPSS) as a microwave absorber in asphalt mixtures, finding that HPSS has good microwave absorption capacity and can increase the surface temperature of the asphalt mixtures. However, the heating uniformity decreases with the increase of HPSS content.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Chao Yang, Shaopeng Wu, Jun Xie, Serji Amirkhanian, Quantao Liu, Jinquan Zhang, Yongli Xiao, Zenggang Zhao, Haiqin Xu, Na Li, Fusong Wang, Lei Zhang
Summary: This study investigates the healing characteristics of recycled asphalt mixtures with steel slag. The results show that increasing the particle size of steel slag can enhance the healing efficiency of recycled asphalt mixtures. Additionally, long term aging can reduce the healing performance.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Jianan Liu, Zhenjun Wang, Haosen Jing, Tonghuan Zhang, Xiaofeng Wang, Xiaowei Zhou, Xu Xu
Summary: Steel slag asphalt mixture (SSAM) with self-healing technology is designed to improve its road performance. The steel slag exhibits obvious magnetic loss characteristics, and its composition design contributes to a better healing rate. The healing process mainly affects the morphology of voids and reduces the proportion of cracks. By reducing the coordination number and throat number of voids, the material's performance is improved.
MATERIALS & DESIGN
(2023)
Article
Construction & Building Technology
Haosen Jing, Jianan Liu, Zhenjun Wang, Hao Chen, Xuemei Zhang, Linjian Yuan
Summary: The variation characteristics of voids at different scales under freeze-thaw damage and microwave healing were studied using X-ray computed tomography (CT). The initial distribution state of voids was analyzed through scale classification. The distribution in the horizontal plane and vertical direction was quantitatively characterized, and the source of the damage-healing effect was analyzed using iterative variation indexes. The critical void was determined by considering both total and relative iterative variation rates. The findings provide insights into the damage-healing process of steel slag asphalt mixture and contribute to the sustainability of asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Hanwen Yang, Jian Ouyang, Zhao Jiang, Jinping Ou
Summary: Microwave heating is an effective method for accelerating the healing of asphalt mixtures with cracks containing microwave-absorbing materials. The reinforcement effects of three fibers (carbon fiber, steel fiber, and steel wool) on the mechanical properties and self-healing ability of the mixtures were studied. Freeze-thaw cycles had adverse effects on the mechanical properties and healing ability of fiber-modified asphalt mixtures. Among the three fibers, steel fiber showed the strongest reinforcement effect on fracture behavior, with less susceptibility to moisture and freeze-thaw effects compared to steel wool and carbon fiber. Steel fiber is recommended for fabricating self-healing asphalt mixtures considering the harmful impacts of freeze-thaw cycles and the beneficial impacts of fiber reinforcement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Fu Wang, Hongbin Zhu, Benan Shu, Yuanyuan Li, Dengjun Gu, Yangming Gao, Anqi Chen, Jianlin Feng, Shaopeng Wu, Quantao Liu, Chao Li
Summary: Traditional asphalt mixtures have limited ability to absorb microwave energy efficiently, hindering the development of microwave heating technology in road maintenance. By utilizing basalt aggregates with favorable microwave heating characteristics, the overall microwave self-healing rate of asphalt mixtures can be enhanced. Through testing the elements and electromagnetic parameters of basalt aggregates, the microwave heating mechanism is revealed. The study also investigates the heating characteristics, flexural strength, fatigue resistance, and self-healing performance of asphalt mixtures through tests. The results demonstrate that basalt aggregates, highly correlated with Si, Fe, and Al elements, exhibit excellent wave absorbing properties, absorbing microwave energy through dielectric and magnetic losses. The type and particle size of aggregates affect the microwave heating rate. After microwave heating, asphalt mixtures with basalt and limestone aggregates can recover at least 65% and 23% of their flexural strength and fatigue resistance, respectively.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Wenzhen Wang, Aiqin Shen, Xinkuan Jin, Jingyu Yang
Summary: Recycling waste steel slag for asphalt pavement construction can reduce energy consumption and preserve nonrenewable natural resources. The moisture susceptibility of steel slag asphalt mixture (SSAM) in severe freeze-thaw regions was investigated by blending different types of fibers and rubber powder into the SSAMs.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Bin Zhang, Xu Gao, Shi Xu, Xinkui Yang, Qin Tian, Jiayi Liu
Summary: This study investigates the synergistic effect of basalt and coal gangue powder (CGP) on the microwave heating self-healing of an asphalt mixture, and finds that the addition of CGP can improve the microwave heating speed, water stability, and fracture energy recovery of the asphalt mixture. These results will further promote the utilization rate of coal gangue.
Article
Green & Sustainable Science & Technology
Chao Yang, Zilin Lei, Sicheng Wang, Fusong Wang, Wangwang Zhou, Qiuyuan Luo, Jixin Zhang
Summary: This study investigated the induction heating rate of recycled asphalt mixtures by optimizing the composition design and dosage of rejuvenator. The results showed that the addition of 6% rejuvenator in aged asphalt and 2% steel fiber content could effectively restore the physical properties of recycled asphalt mixtures and achieve a high heating rate. This study is significant for promoting solid waste recycling and sustainable asphalt pavement construction.
Article
Construction & Building Technology
Mansour Fakhri, Sajad Javadi, Mohammad Amin Norouzi, Behnam Baveli Bahmai, Mohammad M. M. Karimi
Summary: The use of copper slag as a new material in asphalt pavement is being evaluated to reduce waste accumulation and lower production costs due to environmental pollution and the shortage of nonrenewable natural resources. This study assessed the feasibility of using copper-slag filler as a substitute for lime in warm-mix asphalt (WMA) to enhance its self-healing and thermal/electrical conductivity potential. The results showed that the mixtures containing copper slag had high thermal/electrical conductivity and improved self-healing potential.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Baowen Lou, Aimin Sha, Diego Maria Barbieri, Zhuangzhuang Liu, Fan Zhang
Summary: Microwave heating technique shows promise in asphalt pavement maintenance with minimal external intervention. Key factors such as frequency and power play crucial roles in achieving optimal heating results, as supported by numerical simulations to understand the heating process and optimize microwave applicators.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Jianan Liu, Zhenjun Wang, Meng Li, Xiaofeng Wang, Zehui Wang, Tonghuan Zhang
Summary: Steel slag (SS) with good microwave absorption and heating potential was used to partially replace limestone in asphalt mixture. The morphology, elements, surface temperature, thermal transfer process, road performance, and air voids structures of the steel slag asphalt mixture (SSAM) were studied. The results showed that SSAM prepared by HHS steel slag had improved microwave absorption and heating uniformity. However, microwave cycling decreased the durability of SSAM.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Xueqin Chen, Yuhao Wang, Zhenhui Liu, Qiao Dong, Xiaokang Zhao
Summary: The temperature distribution of porous asphalt mixtures with steel slag aggregates (SSA) heated by microwave was analyzed in this study. The results showed that when 50% of 4.75-9.5 mm aggregates and 50% of 9.5-13.2 mm aggregates were replaced by SSA, the microwave heating efficiency improvement was optimal. Both laboratory tests and numerical simulations indicated that the inner heating rate was greater than the surface heating rate, with the final inner temperature being higher than the surface temperature.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Construction & Building Technology
Jianan Liu, Lin Qi, Xiaofeng Wang, Meng Li, Zhenjun Wang
Summary: This study investigated the aging behavior of asphalt binders under dynamic thermal changes using self-designed MTAC tests. The results showed that with an increase in the number of aging cycles at the mutation temperature, the binder gradually becomes hard and brittle, while the modified binder performs relatively better. Additionally, changes in molecular size and aging degree of the binders were observed after the MTAC process.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Jianan Liu, Zhenjun Wang, Xin Zhao, Cong Yu, Xiaowei Zhou
Summary: In this study, icosahedral 3D printing aggregate (3DPA) was compared to natural aggregates for its adhesion to asphalt. The 3DPAs showed similar adhesion to basalt, better adhesion than diabase and granite, but worse adhesion than limestone. Digital image processing accurately identified the microscopic morphology of the aggregates and calculated their surface structural characteristics, which aligned with the results of the boiling test. This research contributes to the application of 3D printing technology in asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Guan Bian, Lin Qi, Jianan Liu, Xiaofeng Wang, Xu Xu, Zhenjun Wang
Summary: This study investigates the rheology, fatigue properties, and physical changes of crumb rubber modified asphalt (CRMA) after pretreating rubber crumbs with tetraethyl orthosilicate (TEOS). The results show that TEOS addition can improve the physical properties and rheological properties of CRMA, but excessive addition may decrease its fatigue life.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Di Yu, Haosen Jing, Jianan Liu
Summary: This paper focuses on the freeze-thaw damage of asphalt pavement and conducts X-ray computed tomography experiments on asphalt mixture before and after freezing and thawing. The results show that the characteristic mean value of the 9th cycle is the irreversible limit of freeze-thaw damage. The non-resilience after the increase in large void area is the fundamental reason for the accumulation of freeze-thaw damage. The source of void damage shifts from large voids to small voids, and the middle-stage is a critical stage of freeze-thaw damage. This research provides a quantitative evaluation of the internal freeze-thaw damage process of asphalt mixture and proposes a morphological theory of the evolution of void damage based on an equivalent ellipse, which contributes to a better understanding of the freezing-thawing damage law of asphalt pavement.
Article
Construction & Building Technology
Jianan Liu, Zhenjun Wang, Meng Li, Xiaofeng Wang, Zehui Wang, Tonghuan Zhang
Summary: Steel slag (SS) with good microwave absorption and heating potential was used to partially replace limestone in asphalt mixture. The morphology, elements, surface temperature, thermal transfer process, road performance, and air voids structures of the steel slag asphalt mixture (SSAM) were studied. The results showed that SSAM prepared by HHS steel slag had improved microwave absorption and heating uniformity. However, microwave cycling decreased the durability of SSAM.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Xingjie Xue, Xin Zheng, Bowen Guan, Jianan Liu, Donghai Ding, Rui Xiong, Hua Zhao, Fulu Wei
Summary: This study investigates the feasibility of using high-alumina refractory waste as alternative aggregates in high-friction surface treatment (HFST). It suggests that silicon carbide-mullite brick (SMB) is a suitable replacement aggregate, providing friction comparable to calcined bauxite. The study also explores the skid resistance mechanism of HFST based on the macro and micro textures of the aggregate, providing insights for the preparation of low-cost and low-energy HFST using environmentally friendly aggregates.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Xiaowei Zhou, Zhenjun Wang, Xiaofeng Wang, Haoyan Guo, Xin Ji, Jianan Liu
Summary: In this study, the feasibility of using calcium carbide slag (CCS) as a substitute for natural limestone (NL) fillers and asphalt mastic was investigated. The properties of CCS and NL were characterized, and the results showed that CCS has advantages in terms of particle size and surface roughness, which can improve the rheological properties and adhesion of asphalt mastic.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Haoyan Guo, Zhenjun Wang, Xin Zhao, Jianan Liu, Xin Ji, Wentao Shi
Summary: This research confirms that dolomite powder can enhance the performance of Cement Asphalt Emulsion Composites (CAEC), but a high replacement proportion can lead to deteriorated mechanical properties of the material.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Polymer Science
Xiaofeng Wang, Jianan Liu, Zhenjun Wang, Haosen Jing, Bo Yang
Summary: The use of waste tires to prepare rubberized asphalt has become a popular trend recently. The adhesion characteristics between rubberized asphalt and aggregates are important factors affecting asphalt pavement performance. This study found that crumb rubber can improve the high-temperature elastic properties of asphalt, but has a negative impact on the maximum tensile strength of asphalt and aggregates. Additionally, limestone exhibited the highest adhesion work with rubberized asphalt, followed by basalt and granite. Overall, crumb rubber can reduce the adhesion performance of asphalt.
Article
Construction & Building Technology
Haosen Jing, Jianan Liu, Zhenjun Wang, Hao Chen, Xuemei Zhang, Linjian Yuan
Summary: The variation characteristics of voids at different scales under freeze-thaw damage and microwave healing were studied using X-ray computed tomography (CT). The initial distribution state of voids was analyzed through scale classification. The distribution in the horizontal plane and vertical direction was quantitatively characterized, and the source of the damage-healing effect was analyzed using iterative variation indexes. The critical void was determined by considering both total and relative iterative variation rates. The findings provide insights into the damage-healing process of steel slag asphalt mixture and contribute to the sustainability of asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Bowen Guan, Aipeng Wang, Hua Zhao, Jianan Liu, Xingjie Xue, Heping Qiu, Lingyun Li
Summary: This paper investigates the preparation of a high friction surface treatment (HFST) using magnetite (MT) aggregates instead of conventional calcined bauxite (CB) aggregates as microwave absorbers. The deicing properties by microwave heating and long-term skid resistance of HFST with different proportions of CB and MT aggregate were evaluated. The results showed that the electromagnetic characteristics of HFST were greatly enhanced by the addition of MT, leading to higher microwave heating and deicing efficiency. However, the long-term skid resistance of HFST was reduced by the addition of MT.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Green & Sustainable Science & Technology
Lei Zhang, Inge Hoff, Xuemei Zhang, Jianan Liu, Chao Yang, Fusong Wang
Summary: This review summarizes crack healing theories, evaluation methods, and technologies in asphalt pavement research. Traditional technologies mainly fill cracks from the outside, effectively preventing further damage, but with limited lifespan extension. Energy supply technologies have shown significant efficacy in enhancing crack healing, particularly in microcracks. Encapsulated agents technologies not only heal cracks but rejuvenate aged asphalt pavement. Other potential crack healing techniques are also mentioned. Overall, the importance of this research is rated 8 out of 10.
Article
Construction & Building Technology
Jianan Liu, Linjian Yuan, Zhenjun Wang, Haosen Jing, Tingquan Shao, Hao Chen
Summary: A new evaluation method has been developed to assess the uniformity of steel slag asphalt mixture. Deep learning techniques are used to select the optimal network for image segmentation. The U-Net network performs the best in identifying and segmenting steel slag. UI and Pv effectively reflect the distribution uniformity of steel slag.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jianan Liu, Zhenjun Wang, Haosen Jing, Tonghuan Zhang, Xiaofeng Wang, Xiaowei Zhou, Xu Xu
Summary: Steel slag asphalt mixture (SSAM) with self-healing technology is designed to improve its road performance. The steel slag exhibits obvious magnetic loss characteristics, and its composition design contributes to a better healing rate. The healing process mainly affects the morphology of voids and reduces the proportion of cracks. By reducing the coordination number and throat number of voids, the material's performance is improved.
MATERIALS & DESIGN
(2023)
Article
Green & Sustainable Science & Technology
Jianan Liu, Haosen Jing, Zhenjun Wang, Xiaofeng Wang, Lei Zhang
Summary: This work aims to use steel slag to prepare sustainable self-healing steel slag bituminous mixtures, reducing maintenance costs and greenhouse gas emissions. The results show that the self-healing performance of the steel slag bituminous mixtures is far superior to traditional mixtures, and they are also economically and ecologically efficient.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
