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学者姓名：焦峪波
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Abstract ：
本发明公开了一种基于声发射特征参数聚类分析的UHPC拉剪裂纹判别方法，首先利用声发射同步监测UHPC损伤断裂过程，得到声发射特征参数，根据特征参数计算出RA值和AF值构建无标记数据集。其次，利用高斯混合模型聚类算法计算每一个样本点由不同簇生成的概率，多次迭代得到更新簇的概率直至高斯收敛，将每个样本划分到概率最大的簇中，得到两个聚类簇，并标记样本点数据；将标记后的样本数据集以RA值为x轴，AF值为y轴的形式展现，利用支持向量机算法，求得分割两个聚类簇的最佳线性分界线，通过该线性分界线划分拉伸和剪切裂纹。本发明所提方法原理明晰，过程简单易行、相比现有拉剪裂纹分类技术更具有客观性与普适性。
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| GB/T 7714 | 焦峪波 , 房梦寒 . 一种基于声发射特征参数聚类分析的UHPC拉剪裂纹判别方法 : CN202310645872.2[P]. | 2023-06-02 . |
| MLA | 焦峪波 等. "一种基于声发射特征参数聚类分析的UHPC拉剪裂纹判别方法" : CN202310645872.2. | 2023-06-02 . |
| APA | 焦峪波 , 房梦寒 . 一种基于声发射特征参数聚类分析的UHPC拉剪裂纹判别方法 : CN202310645872.2. | 2023-06-02 . |
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Abstract ：
本发明公开了一种金刚砂混合机制砂C160UHPMC及其制备方法，其UHPMC配合比设计与组成成份包括：水泥：850kg/m3；硅灰195.5kg/m3；水167.28kg/m3；金刚砂467.5kg/m3；机制砂467.5kg/m3；石英粉331.5kg/m3；钢纤维148.75kg/m3；减水剂60kg/m3；消泡剂1.5kg/m3。利用来源广泛、价格低廉、经济环保、可就地取材的机制砂取代了价格昂贵、污染环境的石英砂，解决石英砂作为骨料在生产过程中污染严重、价格偏高、质量难以把控等问题，减少了天然材料的消耗，减少了碳排放；回收喷磨等领域产生的废料金刚砂二次利用，掺入到机制砂为骨料的机制砂超高性能混凝土中，改善了纯机制砂UHPC力学性能不足和工作性能不佳等缺点；通过改变骨料类型制备了一种经济环保、性能优越、价格低廉的绿色超高性能混凝土。
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| GB/T 7714 | 焦峪波 , 熊正 . 一种金刚砂混合机制砂C160UHPMC及其制备方法 : CN202211669878.5[P]. | 2022-12-25 . |
| MLA | 焦峪波 等. "一种金刚砂混合机制砂C160UHPMC及其制备方法" : CN202211669878.5. | 2022-12-25 . |
| APA | 焦峪波 , 熊正 . 一种金刚砂混合机制砂C160UHPMC及其制备方法 : CN202211669878.5. | 2022-12-25 . |
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Abstract ：
In order to study the reversibility between aging and rejuvenation of modified asphalt binder, a kind of virgin asphalt was selected, and then three kinds of modified asphalt were prepared based on this virgin asphalt. The short-term and long-term aging tests were carried out for the four asphalts. Then three kinds of rejuvenation tests were carried out for the aged asphalt, including commercial rejuvenator, aromatic oil and warm mix rejuvenator. Dynamic shear rheometer (DSR) was used to carry out frequency scanning tests at different temperatures. According to the principle of time temperature equivalence, the master curves of different modified asphalts were constructed, and the rheological properties of asphalt during aging and rejuvenation were studied. By comparing the parameters including complex modulus and hardening index, the rejuvenation effects of viscoelastic properties of modified asphalt were evaluated. Based on the complex modulus of virgin asphalt and modified asphalt, the aging rejuvenation reversible index RM of modified asphalt is proposed to evaluate the recovery of rheological properties of asphalt by different rejuvenators. The results show that the modulus of three kinds of modified asphalt will increase with the deepening of aging. Warm mix rejuvenator can reduce the complex modulus of virgin asphalt, SBS modified asphalt and rubber powder modified asphalt most significantly, followed by the rejuvenator, and the aromatics oil reduced least obviously. This applied to both short-term aging and long-term aging. This research provides a better understanding on the effectiveness and limitation of current rejuvenation techniques and rejuvenators on common asphalts, which is good for the further improvement on production and techniques. (C) 2021 Elsevier Ltd. All rights reserved.
Keyword ：
Aging Aging Asphalt binder Asphalt binder Complex modulus Complex modulus Hardening index Hardening index Modifier Modifier Rejuvenation Rejuvenation Rheology Rheology
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| GB/T 7714 | Guo, Meng , Liu, Xu , Jiao, Yubo et al. Rheological characterization of reversibility between aging and rejuvenation of common modified asphalt binders [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2021 , 301 . |
| MLA | Guo, Meng et al. "Rheological characterization of reversibility between aging and rejuvenation of common modified asphalt binders" . | CONSTRUCTION AND BUILDING MATERIALS 301 (2021) . |
| APA | Guo, Meng , Liu, Xu , Jiao, Yubo , Tan, Yiqiu , Luo, Daisong . Rheological characterization of reversibility between aging and rejuvenation of common modified asphalt binders . | CONSTRUCTION AND BUILDING MATERIALS , 2021 , 301 . |
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Abstract ：
The adhesion between asphalt binder and aggregate is very important to the performance and durability of asphalt pavement. In order to explore the characterisation of modified asphalt binder in microstructure during aging and rejuvenation, the virgin asphalt binder and three kinds of modified asphalt binder (styrene-butadiene-styrene block copolymer (SBS), rubber powder and high viscosity and high elasticity [HVHE] modifier) in different aging and rejuvenation condition were prepared. The micromorphology and surface adhesion were measured by atomic force microscopy. The average roughness value was used as the index to evaluate the micromorphology of asphalt binder. The surface adhesion was used as the index to evaluate the adhesion properties of asphalt binder. Results show that the "bee" structure of SBS-modified asphalt binder increased slightly after long-term aging, and the recovery effect of aromatics oil was the closest to that of the unaged one. The rubber powder-modified asphalt binder and HVHE-modified asphalt binder showed the spot structure. And no matter for short-term aging or long-term aging, aromatics oil had the best recovery effect on micro morphology. The adhesion of the three modified asphalts would decrease gradually after aging. The effects of three kinds of rejuvenator on the adhesion of SBS-modified asphalt binder and rubber powder-modified asphalt binder were different. Rejuvenator, aromatic oil and warm mix asphalt mixture (WMA) additive could rejuvenate the loss of adhesion of HVHE-modified asphalt binder to a certain extent.
Keyword ：
aging aging micromorphology micromorphology surface adhesion surface adhesion asphalt binder asphalt binder modifier modifier rejuvenation rejuvenation AFM AFM
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| GB/T 7714 | Guo, Meng , Liang, Meichen , Jiao, Yubo et al. Effect of aging and rejuvenation on adhesion properties of modified asphalt binder based on AFM [J]. | JOURNAL OF MICROSCOPY , 2021 , 284 (3) : 244-255 . |
| MLA | Guo, Meng et al. "Effect of aging and rejuvenation on adhesion properties of modified asphalt binder based on AFM" . | JOURNAL OF MICROSCOPY 284 . 3 (2021) : 244-255 . |
| APA | Guo, Meng , Liang, Meichen , Jiao, Yubo , Tan, Yiqiu , Yu, Jianxin , Luo, Daisong . Effect of aging and rejuvenation on adhesion properties of modified asphalt binder based on AFM . | JOURNAL OF MICROSCOPY , 2021 , 284 (3) , 244-255 . |
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Abstract ：
Acoustic emission (AE) technology is widely used in structural health monitoring. Glass sand (GS) made from waste glass is a promising replacement aggregate for quartz sand (QS) in ultra-high performance concrete (UHPC). This paper addresses the effects of different factors including water-binder ratio, length of basalt fiber (BF) and ratio of GS replacing QS on the fluidity and flexural strength of UHPC notched beam under four-point flexural loads. Meanwhile, the fracture characteristics of UHPC notched beam were characterized through acoustic emission (AE) technique. The results show that water-binder ratio and replacement ratio of GS present a positive correlation with work performance of UHPC, while length of BF exhibits a negative one. The flexural strength of UHPC notched beams can be improved by the decrease of the water-binder ratio and fiber length. The effect of water-binder ratio on flexural strength is the most significant, while the addition of GS presents the minimum one. The fracture characteristics of UHPC notched beams could be favorably characterized by AE parameters. Through the analysis and comparison of the evolution of AE parameters, the differences in fracture properties of UHPC notched beams with different flexural strengths can be realized. Through this study, the fluidity and flexural performance of UHPC produced by replacing QS with GS were demonstrated, which is beneficial to the cleaner production of UHPC. Meanwhile, the AE technique presented great potential for fracture characterization of UHPC notched beam, which also provided a promising method for real-time monitoring of cracking in the diagnosis of UHPC structures.
Keyword ：
fracture characterization fracture characterization notched beam notched beam UHPC UHPC material factor influence material factor influence AE AE
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| GB/T 7714 | Wang, Xianqiang , Liu, Duo , Zhang, Yao et al. Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique [J]. | MATERIALS , 2021 , 14 (16) . |
| MLA | Wang, Xianqiang et al. "Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique" . | MATERIALS 14 . 16 (2021) . |
| APA | Wang, Xianqiang , Liu, Duo , Zhang, Yao , Jiao, Yubo . Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique . | MATERIALS , 2021 , 14 (16) . |
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Abstract ：
Different aggregate gradations of asphalt concrete possess dissimilar skeleton structures, leading to diverse macroscopic and mechanical characteristics. Acoustic emission (AE) technology can realize real-time monitoring of the whole damage evolution process of materials. The objective of the present investigation was to demonstrate the fracture characteristics of asphalt concrete with three types of aggregate gradations, including dense-graded asphalt concrete (AC), stone mastic asphalt (SMA), and open-graded friction course (OGFC) under indirect tensile load on account of the acoustic emission (AE) technique. The Marshall compaction method was used to prepare specimens, and the indirect tensile test (IDT) and AE monitoring were conducted simultaneously at different temperatures. The corresponding AE parameters containing energy, cumulative energy, count, and cumulative count were adopted to characterize the fracture process of asphalt concrete with different aggregate gradations. The impact of temperature on the damage characteristics of asphalt concrete was also assessed. Test results indicated that the AE parameters could effectively classify the damage stages of asphalt concrete, and specimens with different aggregate gradations exhibited different AE characteristics during failure processes. The combination of AE parameters and cumulative AE parameters can accurately characterize the damage characteristics of asphalt concrete. SMA specimens possessed the best overall performance among these three types of asphalt concrete in terms of the variations in energy and cumulative energy at different temperatures. The findings obtained in this study can provide a practical AE-based evaluation approach for demonstrating the fracture mechanism of asphalt concrete with different aggregate gradations.
Keyword ：
fracture behavior fracture behavior temperature effect temperature effect acoustic emission acoustic emission aggregate gradation aggregate gradation asphalt concrete asphalt concrete
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| GB/T 7714 | Fu, Liuxu , Jiao, Yubo , Chen, Xianhua et al. Evaluation Approach of Fracture Behavior for Asphalt Concrete with Different Aggregate Gradations and Testing Temperatures Using Acoustic Emission Monitoring [J]. | MATERIALS , 2021 , 14 (16) . |
| MLA | Fu, Liuxu et al. "Evaluation Approach of Fracture Behavior for Asphalt Concrete with Different Aggregate Gradations and Testing Temperatures Using Acoustic Emission Monitoring" . | MATERIALS 14 . 16 (2021) . |
| APA | Fu, Liuxu , Jiao, Yubo , Chen, Xianhua , Zhang, Mengsu . Evaluation Approach of Fracture Behavior for Asphalt Concrete with Different Aggregate Gradations and Testing Temperatures Using Acoustic Emission Monitoring . | MATERIALS , 2021 , 14 (16) . |
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Abstract ：
This paper investigates the efficiency of acoustic emission (AE) technique for monitoring and assessing the bond slip behavior and damage characteristics of deformed rebar embedded in hybrid fiber reinforced engineered cementitious composites (ECC). A series of pull-out tests were conducted on 48 prism samples with variable rebar diameters (14 mm, 20 mm, and 25 mm), embedded length (3d, 4d and 5d), and cover thickness (2.5d, 4d, 5d and 6d). Two AE sensors, attached on ECC surface and rebar surface respectively, were utilized to critically monitor the AE activity emitted from the ECC matrix and the interface between ECC and rebar throughout the tests. The bond-slip behavior of ECC-rebar presented a more ductile performance than conventional concrete (CC)-rebar because of fiber bridging effect. The damage classification and damage characteristics were clarified by measuring AE activity. The debonding process of ECC-rebar could be divided into four main stages based on the slope changes of cumulative AE hits, and further refined into several substages based on the sudden rises of AE energy. Besides AE cumulative parameters, the Ib-values calculated from AE signals of ECC matrix and ECC-rebar interface were analyzed and compared, which behaved more effectively in identifying the development of cracks and distinguishing the maximum bond stress. Also, the AE intensity analysis was implemented to identify the micro-mechanism transformation during different bonding stages. Moreover, the AE intensity results of CC-rebar obtained from previous research and ECC-rebar in this study were compared.
Keyword ：
Engineered cementitious composites (ECC) Engineered cementitious composites (ECC) Damage characteristics Damage characteristics Damage classification Damage classification Acoustic emission (AE) Acoustic emission (AE) Pull-out test Pull-out test
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| GB/T 7714 | Shan, Wenchen , Liu, Jiepeng , Ding, Yao et al. Assessment of bond-slip behavior of hybrid fiber reinforced engineered cementitious composites (ECC) and deformed rebar via AE monitoring [J]. | CEMENT & CONCRETE COMPOSITES , 2021 , 118 . |
| MLA | Shan, Wenchen et al. "Assessment of bond-slip behavior of hybrid fiber reinforced engineered cementitious composites (ECC) and deformed rebar via AE monitoring" . | CEMENT & CONCRETE COMPOSITES 118 (2021) . |
| APA | Shan, Wenchen , Liu, Jiepeng , Ding, Yao , Mao, Weihao , Jiao, Yubo . Assessment of bond-slip behavior of hybrid fiber reinforced engineered cementitious composites (ECC) and deformed rebar via AE monitoring . | CEMENT & CONCRETE COMPOSITES , 2021 , 118 . |
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Abstract ：
本发明公开了一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法，该方法利用沥青混合料低温损伤断裂过程中产生的声发射信号，通过声发射设备采集声发射技术参数，建立声发射振幅值和声发射震级的模型，确定出声发射参数b值，再通过对b值进行卡尔曼滤波分析处理，根据b值的变化规律对沥青混合料低温的断裂过程进行评价。通过声发射振幅值与声发射震级的关系得到声发射b值，对声发射b值进行卡尔曼滤波，建立断裂过程与b值的关系，实现基于声发射b值对沥青混合料低温损伤断裂过程的评价。本发明基于声发射b值卡尔曼滤波分析，为沥青混合料低温在服役过程中产生的损伤断裂提供一种可靠的评价方法。
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| GB/T 7714 | 焦峪波 , 杨华 , 张立栋 et al. 一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法 : CN202010346584.3[P]. | 2020-04-27 . |
| MLA | 焦峪波 et al. "一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法" : CN202010346584.3. | 2020-04-27 . |
| APA | 焦峪波 , 杨华 , 张立栋 , 张瑶 , 杏剑 , 韩笑 . 一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法 : CN202010346584.3. | 2020-04-27 . |
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Abstract ：
The application of rubber particles made of scrap tires to asphalt mixtures has good economic and social values. Considering the practical performance of asphalt mixtures applied in pavements, this research studied the high temperature stability, low-temperature crack resistance and water stability of a rubber-modified asphalt mixture. Rubber-modified asphalt binder was firstly prepared based on wet process. The corresponding asphalt mixture specimen was then fabricated using Marshall method. Finally, rutting test, low-temperature bending test, Marshall immersion test and freeze-thaw splitting test were carried out, respectively. The experimental results showed that the addition of rubber particles significantly improved the high-temperature stability of the asphalt mixture with dynamic stability enhancing by 102%. The low-temperature crack resistance and water stability performance of the rubber-modified asphalt mixture were better than that of the matrix asphalt mixture, which increased by 49% and 5% for low temperature flexural strength and freeze-thaw splitting tensile strength, respectively. Due to the addition of rubber particles, the pavement performance of the rubber-modified asphalt mixture improved.
Keyword ：
environmentally benign processing environmentally benign processing property property polymeric materials polymeric materials
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| GB/T 7714 | Liu, Hanbing , Luo, Guobao , Wang, Xianqiang et al. Laboratory evaluation of the pavement performance of a rubber-modified asphalt mixture [J]. | EMERGING MATERIALS RESEARCH , 2020 , 9 (1) : 99-103 . |
| MLA | Liu, Hanbing et al. "Laboratory evaluation of the pavement performance of a rubber-modified asphalt mixture" . | EMERGING MATERIALS RESEARCH 9 . 1 (2020) : 99-103 . |
| APA | Liu, Hanbing , Luo, Guobao , Wang, Xianqiang , Jiao, Yubo . Laboratory evaluation of the pavement performance of a rubber-modified asphalt mixture . | EMERGING MATERIALS RESEARCH , 2020 , 9 (1) , 99-103 . |
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Abstract ：
本发明公开了一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法，该方法利用沥青混合料低温损伤断裂过程中产生的声发射信号，通过声发射设备采集声发射技术参数，建立声发射振幅值和声发射震级的模型，确定出声发射参数b值，再通过对b值进行卡尔曼滤波分析处理，根据b值的变化规律对沥青混合料低温的断裂过程进行评价。通过声发射振幅值与声发射震级的关系得到声发射b值，对声发射b值进行卡尔曼滤波，建立断裂过程与b值的关系，实现基于声发射b值对沥青混合料低温损伤断裂过程的评价。本发明基于声发射b值卡尔曼滤波分析，为沥青混合料低温在服役过程中产生的损伤断裂提供一种可靠的评价方法。
Cite：
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| GB/T 7714 | 焦峪波 , 杨华 , 张立栋 et al. 一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法 : CN202010346584.3[P]. | 2020-04-27 . |
| MLA | 焦峪波 et al. "一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法" : CN202010346584.3. | 2020-04-27 . |
| APA | 焦峪波 , 杨华 , 张立栋 , 张瑶 , 杏剑 , 韩笑 . 一种基于声发射b值卡尔曼滤波分析的沥青混合料低温断裂评价方法 : CN202010346584.3. | 2020-04-27 . |
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