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学者姓名：黄伟
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Abstract ：
采用未淡化的海砂制备超高性能混凝土（UHPC）和普通混凝土，研究了不同氯离子含量的海砂对UHPC抗压强度、孔结构、快速氯离子渗透性以及内置钢筋耐久性的影响，并与普通混凝土进行分析比较。结果表明，海砂中的氯离子含量对UHPC抗压强度并不会产生较大的消极影响；海砂UHPC的临界孔半径约为2 nm，与海砂普通混凝土不同，孔隙率随海砂中氯含量的增加而增加；即使海砂氯离子含量高达0.636%，海砂UHPC的氯离子渗透性仍可忽略不计；海砂UHPC中钢筋在28 d后处于钝化状态并趋于稳定。
Keyword ：
孔结构 孔结构 抗压强度 抗压强度 海砂 海砂 耐久性 耐久性 超高性能混凝土 超高性能混凝土
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| GB/T 7714 | 韦建刚 , 陈荣 , 黄伟 et al. 海砂超高性能混凝土试验 [J]. | 重庆大学学报 , 2024 , 47 (02) : 14-21 . |
| MLA | 韦建刚 et al. "海砂超高性能混凝土试验" . | 重庆大学学报 47 . 02 (2024) : 14-21 . |
| APA | 韦建刚 , 陈荣 , 黄伟 , 卞学海 , 麻秀星 . 海砂超高性能混凝土试验 . | 重庆大学学报 , 2024 , 47 (02) , 14-21 . |
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Abstract ：
超高性能混凝土(UHPC)加固修复既有石结构中，UHPC与石材之间优异的黏结性能是保证加固效果的关键。因此，为探究UHPC-石材界面的黏结性能，通过劈裂抗拉试验和双L型剪切试验，考察不同界面处理方式对UHPC-石材界面黏结性能的影响。结果表明，UHPC-石材界面破坏模式主要分为三种，其中发生模式C破坏(石材UHPC破坏)时界面黏结强度最大。界面键槽处理方式能显著提高UHPC-石材界面黏结强度、界面剪切刚度，且在改变破坏形态的同时有效提升试件的延性，当键槽深度为20 mm时，试件表现出较好的界面黏结性能。另外，试件剪切荷载-位移曲线包含滑移前阶段和滑移后阶段，凿毛试件在滑移后阶段没有经历塑性变形。相同界面处理方式下，UHPC-石材的界面抗剪强度与界面劈裂抗拉强度呈正相关关系。
Keyword ：
UHPC-石材界面 UHPC-石材界面 剪切试验 剪切试验 劈裂抗拉试验 劈裂抗拉试验 界面剪切刚度 界面剪切刚度 键槽处理 键槽处理 黏结强度 黏结强度
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| GB/T 7714 | 黄伟 , 黄雅莹 , 陈雪莉 et al. 超高性能混凝土-石材界面黏结性能试验研究 [J]. | 硅酸盐通报 , 2024 , 43 (02) : 397-406,417 . |
| MLA | 黄伟 et al. "超高性能混凝土-石材界面黏结性能试验研究" . | 硅酸盐通报 43 . 02 (2024) : 397-406,417 . |
| APA | 黄伟 , 黄雅莹 , 陈雪莉 , 吴应雄 , 郑新颜 , 张恒春 . 超高性能混凝土-石材界面黏结性能试验研究 . | 硅酸盐通报 , 2024 , 43 (02) , 397-406,417 . |
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Abstract ：
在高压作用下,一些具有无定型相的水泥基粉末材料会发生接触硬化现象,粉末颗粒在压力作用下发生缩聚运动,并在粉末颗粒间形成结构键,进而快速形成具有一定强度及耐水性的人造石材.本文综述了压力作用下水泥基粉末材料接触硬化的成键机理以及粉末水分含量、干燥条件、钙硅比、压制过程对其接触硬化性能影响的研究进展.相关研究结果表明,压力作用下粉末颗粒间会形成氢键、范德华力、固体桥键等结构键;粉末水分含量是影响接触硬化性能的重要因素,在压力作用下,水分可以改变粉末颗粒的表面性质并影响颗粒之间的结合,进而改变压制成品的力学性能;钙硅比对接触硬化性能的影响显著,不同粉末材料在压制时的最佳钙硅比亦是不同;摩擦力的存在降低了压制效率,造成压制成品密度、强度分布不均匀,润滑剂的加入可以有效降低摩擦力的影响;此外,降低压制模具高径比并使用双面压制可有效提升压制成品的质量.
Keyword ：
压制工艺 压制工艺 接触硬化 接触硬化 无定型相 无定型相 水分含量 水分含量 水泥基粉末材料 水泥基粉末材料 结构键 结构键 钙硅比 钙硅比
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| GB/T 7714 | 张超 , 张子龙 , 黄伟 et al. 高压作用下水泥基粉末材料的接触硬化研究综述 [J]. | 材料导报 , 2024 , 38 (16) : 117-125 . |
| MLA | 张超 et al. "高压作用下水泥基粉末材料的接触硬化研究综述" . | 材料导报 38 . 16 (2024) : 117-125 . |
| APA | 张超 , 张子龙 , 黄伟 , 潘阿馨 , 赖志超 , 吴天赐 et al. 高压作用下水泥基粉末材料的接触硬化研究综述 . | 材料导报 , 2024 , 38 (16) , 117-125 . |
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Abstract ：
Ultra -high performance concrete (UHPC) is an innovative cement -based composite material characterized by extremely high durability and mechanical properties, which provides a potential possibility of using non -desalted sea -sand as aggregate. However, the long-term steel corrosion behavior in UHPC prepared by simulated sea -sand under different immersion environments remains unclear, which is of great significance for the application of sea -sand UHPC in practical engineering. In this study, the pore structure of sea -sand UHPC matrix was measured using nitrogen adsorption/desorption method. The corrosion behavior of rebar in sea -sand UHPC with different endogenous chloride ion contents soaking in pure water and NaCl solution was characterized by linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and cyclic polarization (CP). The experimental results show that the initial UHPC pore structure is refined by incorporation of sea -sand, and is similar to that of ordinary UHPC at the later hydration. Regardless of the endogenous chloride ion content and immersion environment, the corrosion rate evaluated by corrosion current density (icorr) and polarization resistance (Rp) of reinforcement in UHPC is extremely low. The measurement of EIS shows that UHPC group has higher matrix resistance (Rc) and charge transfer resistance (Rct), while lower electric double layer capacitance (CPEdl) of reinforcement, which indicates that the steel in UHPC made of sea -sand is still in a state of passivation. However, the steel bar in comparison specimen OPC soaking in NaCl solution is in the corrosion stage. Furthermore, sea -sand UHPC possesses of excellent ability of anti -pitting corrosion of reinforcement after 180 days of immersion in NaCl solution.
Keyword ：
Corrosion behavior Corrosion behavior Endogenous chloride level Endogenous chloride level Immersion environment Immersion environment Pore structure Pore structure Sea -sand UHPC Sea -sand UHPC
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| GB/T 7714 | Huang, Wei , He, Lian , Chen, Zhendong et al. Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments [J]. | JOURNAL OF BUILDING ENGINEERING , 2024 , 90 . |
| MLA | Huang, Wei et al. "Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments" . | JOURNAL OF BUILDING ENGINEERING 90 (2024) . |
| APA | Huang, Wei , He, Lian , Chen, Zhendong , Yin, Jianli , Huang, Qingwei , Chen, Rong et al. Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments . | JOURNAL OF BUILDING ENGINEERING , 2024 , 90 . |
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超高性能混凝土(UHPC)的工作性和力学强度是其推广应用的关键。因此，本文采用和易性试验、流变测试、抗压强度测试、抗折强度测试，探究不同减水剂掺量和纤维物理参数下UHPC扩展度、经时损失、屈服强度、塑性黏度以及抗压强度、抗折强度的变化规律。结果表明，UHPC的扩展度均随着减水剂掺量和纤维掺量的增加先增大后减小；UHPC的经时损失主要与静置时间相关，UHPC静置时间越长，经时损失越大；UHPC的流变曲线呈剪切增稠的趋势；随着减水剂的增加，UHPC的屈服应力和塑性黏度均呈先减小后增大的趋势，并且均在减水剂掺量为1.00%(质量分数)时获得最小值；减水剂对强度的影响并不明显，UHPC的抗压强度随着纤维掺量的增加而增加，抗折强度随着纤维掺量的增加先增大后减小，在纤维长度为13.0 mm时UHPC的抗压性能最优，在纤维长度为20.0 mm时UHPC的抗折性能最优。
Keyword ：
力学性能 力学性能 扩展度 扩展度 流变性能 流变性能 经时损失 经时损失 超高性能混凝土 超高性能混凝土 钢纤维 钢纤维
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| GB/T 7714 | 黄斌 , 龚明子 , 潘阿馨 et al. 减水剂与钢纤维对超高性能混凝土流变及力学性能的影响 [J]. | 硅酸盐通报 , 2024 , 43 (09) : 3214-3223 . |
| MLA | 黄斌 et al. "减水剂与钢纤维对超高性能混凝土流变及力学性能的影响" . | 硅酸盐通报 43 . 09 (2024) : 3214-3223 . |
| APA | 黄斌 , 龚明子 , 潘阿馨 , 饶先鹏 , 王涛 , 陈晨 et al. 减水剂与钢纤维对超高性能混凝土流变及力学性能的影响 . | 硅酸盐通报 , 2024 , 43 (09) , 3214-3223 . |
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Abstract ：
实际工程中混凝土由于自身与外界的作用，体积会发生变化，产生收缩。混凝土的收缩性能研究自从进入人们的视野以来，就不断有新的研究方法被提出。根据约束作用，混凝土收缩一般分为自由收缩和约束收缩，其中，环形约束收缩试验因其装置简单、易操作、应力大小均匀、易于推广及标准化、体现约束条件下收缩和应力松弛的综合作用等优点，被广泛应用于收缩试验，能有效地评价混凝土的抗开裂性能。然而，环形约束收缩试验有着开裂位置随机、对高抗裂性材料约束不足、开裂时间较长或不开裂等问题，对此，许多学者针对诱导裂缝位置与加大开裂敏感度的方面提出了不同的改进装置。另外，试验的影响因素与开裂指标也是关系到环形约束收缩试验方法科学实用与...
Keyword ：
开裂指标 开裂指标 湿度 湿度 环形约束收缩试验 环形约束收缩试验 约束度 约束度 试验装置 试验装置
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| GB/T 7714 | 张超 , 方胜 , 黄伟 et al. 混凝土环形收缩试验的研究进展 [J]. | 材料导报 , 2023 , (04) : 1-21 . |
| MLA | 张超 et al. "混凝土环形收缩试验的研究进展" . | 材料导报 04 (2023) : 1-21 . |
| APA | 张超 , 方胜 , 黄伟 , 赖志超 , 陈添平 . 混凝土环形收缩试验的研究进展 . | 材料导报 , 2023 , (04) , 1-21 . |
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In the current engineering practice,the volume of concrete is usually changed causing the formation of shrinkage due to the internal and external actions. Since recent research focusing on the shrinkage properties of concrete emerged,new research methods have continuously been proposed. The shrinkage of concrete is generally divided into free and confined shrinkage according to the limitation actions. One of the recent adopted testing methods is the ring confined shrinkage test that is widely used in testing the shrinkage of concrete. The wide usage of this method is due to its advantages that include the simple devices,easy operation,uniform stress,and easy popularization and standardization. It can also reflect the comprehensive effects of shrinkage and stress relaxation under constraint conditions. Therefore,it has the ability to effectively examine the cracking resistance of concrete. However,this testing method has some drawbacks such as the random cracking position,insufficient restraint on materials with high cracking, and long cracking time or no cracking. Thus,many scholars have suggested different improved devices that can induce cracks position and increase the cracking sensitivity. Besides,the influencing factors and cracking indicators of this testing method are also important for the scientific and practical application. For methods improvement,many studies conducted recently either locally or abroad have proposed new practical methods such as built-in sharp angle,inner and outer rings eccentricity,and elliptical rings. Several factors such as the constraint degree,humidity,fiber,etc.,have an important influence on this testing method,while there are some practical cracking indexes based on tensile strength,fracturing mechanics, cracking coefficient,stress rate coefficient,etc.,for the cracking indicators. This review summarizes the available research on the progress of concrete ring confined shrinkage test,from a detailed and comprehensive perspective of the experimental devices,influential factors and cracking indicators. Still,it provides analysis on the influencing factors of this testing method in order to serve as a reference for the future researchers when dealing with this method of testing. © 2023 Cailiao Daobaoshe/Materials Review. All rights reserved.
Keyword ：
Concretes Concretes Concrete testing Concrete testing Shrinkage Shrinkage Stress relaxation Stress relaxation Tensile strength Tensile strength Tensile testing Tensile testing
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| GB/T 7714 | Zhang, Chao , Fang, Sheng , Huang, Wei et al. Ring Shrinkage Test of Concrete:a Review [J]. | Materials Reports , 2023 , 37 (4) . |
| MLA | Zhang, Chao et al. "Ring Shrinkage Test of Concrete:a Review" . | Materials Reports 37 . 4 (2023) . |
| APA | Zhang, Chao , Fang, Sheng , Huang, Wei , Lai, Zhichao , Chen, Tianping . Ring Shrinkage Test of Concrete:a Review . | Materials Reports , 2023 , 37 (4) . |
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Abstract ：
超高性能混凝土(Ultra-high performance concrete,UHPC)具有优异的力学性能和耐久性,被广泛应用于组合构件及结构加固中,其中,UH-PC与既有普通混凝土(Existing normal concrete,NC)之间的界面粘结性能至关重要.本文综述了国内外UHPC-NC的界面粘结性能的试验方法及界面抗剪强度计算公式、影响因素与界面耐久性能的研究进展,指出了测试方法存在的不足,探究了不同规范的界面抗剪强度计算式对UH-PC-NC的适用性,总结了不同因素对UHPC-NC界面粘结性能的影响,包括纤维、界面粗糙度、界面含水率、界面剂、既有混凝土强度、胶凝材料和养护制度等,阐述了其界面特性的增强机理,探讨了耐久性的现阶段研究.UHPC-NC具有优异的界面粘结强度,其中,合适的养护制度与纤维能够减少UHPC的收缩,增强材料之间相容性;界面粗糙度与既有混凝土强度的增加可以有效避免界面破坏;界面剂、胶凝材料及适当的界面含水率可以改善过渡区;UHPC-NC界面具有较好的抗渗透性能和抗冻融性能.
Keyword ：
影响因素 影响因素 既有普通混凝土 既有普通混凝土 界面性能试验 界面性能试验 耐久性 耐久性 超高性能混凝土 超高性能混凝土
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| GB/T 7714 | 吴应雄 , 郑新颜 , 黄伟 et al. 超高性能混凝土-既有普通混凝土界面粘结性能研究综述 [J]. | 材料导报 , 2023 , 37 (16) : 140-150 . |
| MLA | 吴应雄 et al. "超高性能混凝土-既有普通混凝土界面粘结性能研究综述" . | 材料导报 37 . 16 (2023) : 140-150 . |
| APA | 吴应雄 , 郑新颜 , 黄伟 , 郑祥浴 , 陈宝春 . 超高性能混凝土-既有普通混凝土界面粘结性能研究综述 . | 材料导报 , 2023 , 37 (16) , 140-150 . |
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为改善普通混凝土电杆自重大、杆身易开裂、承载力低等问题，基于离心成型工艺，调整离心速度、加速度和时间，设计了粗骨料UHPC最优配合比，通过变速离心机制作了6根含粗骨料的UHPC环形电杆，进一步提高了生产效率，采用四点弯曲静力加载，并以钢纤维掺量和配筋率为参数，研究其破坏模式、抗裂性能和承载能力。试验结果表明：电杆破坏方式可分为弹性、裂缝开展和破坏3个阶段；随着钢纤维掺量增加，电杆的主裂缝数量逐渐降低，而细微次裂缝逐渐增多，钢纤维在一定程度上阻碍了裂缝的发展，其受弯承载力提高了42.6%;随着配筋率的增大，电杆的主裂缝数量相差不大，但裂缝长度和宽度明显减小，且抵抗变形能力增强，其受弯承载力提高了63.8%;采用活性粉末混凝土电杆受弯承载力计算方法与试验值较为接近，但相对安全保守，不过随着配筋率和钢纤维掺量的提高，其理论计算值与试验值也越接近。
Keyword ：
受弯性能 受弯性能 离心成型 离心成型 粗骨料UHPC 粗骨料UHPC 输电杆 输电杆 配筋率 配筋率 钢纤维 钢纤维
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| GB/T 7714 | 黄福云 , 桂奎 , 陆志军 et al. 离心成型的粗骨料UHPC输电杆受弯性能试验 [J]. | 哈尔滨工业大学学报 , 2023 , 55 (07) : 107-116 . |
| MLA | 黄福云 et al. "离心成型的粗骨料UHPC输电杆受弯性能试验" . | 哈尔滨工业大学学报 55 . 07 (2023) : 107-116 . |
| APA | 黄福云 , 桂奎 , 陆志军 , 马宇 , 黄伟 . 离心成型的粗骨料UHPC输电杆受弯性能试验 . | 哈尔滨工业大学学报 , 2023 , 55 (07) , 107-116 . |
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To resolve the problem of heavy self-weight, easy cracking and low load-bearing capacity of ordinary concrete poles, on the basis of centrifugal molding process, the optimal mix ratio of coarse aggregate UHPC was designed by adjusting the centrifugal speed, acceleration and time. Six UHPC annular poles with coarse aggregate were made by variable speed centrifuge, thus enhancing the production efficiency. The failure mode, crack resistance and bearing capacity were investigated by four-point bending static loading with steel fiber content and reinforcement ratio as parameters. The test results show that the failure mode of the pole can be divided into three stages: elasticity, crack development and failure. With the increase of steel fiber content, the number of main cracks of the pole gradually decreases, while the number of minor cracks increases accordingly. Steel fiber hindered the development of cracks to a certain extent, and its flexural capacity increased by 42. 6% . With the increase of reinforcement ratio, the number of main cracks of the pole is not much different, but the length and width of the cracks are obviously reduced. The resistance to deformation is strengthened, and the flexural bearing capacity is increased by 63. 8% . The calculation results of flexural bearing capacity of RPC pole is close to the experimental value, but relatively safe and conservative. However, with the increase of reinforcement ratio and steel fiber content, the theoretical calculation value is closer to the experimental value. The calculation method of the flexural bearing capacity of the activated powder concrete pole is similar to that of the test results. © 2023 Harbin Institute of Technology. All rights reserved.
Keyword ：
centrifugal forming centrifugal forming coarse aggregate UHPC coarse aggregate UHPC flexural performance flexural performance reinforcement ratio reinforcement ratio steel fiber steel fiber transmission pole transmission pole
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| GB/T 7714 | Huang, F. , Gui, K. , Lu, Z. et al. Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验] [J]. | Journal of Harbin Institute of Technology , 2023 , 55 (7) : 107-116 . |
| MLA | Huang, F. et al. "Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验]" . | Journal of Harbin Institute of Technology 55 . 7 (2023) : 107-116 . |
| APA | Huang, F. , Gui, K. , Lu, Z. , Ma, Y. , Huang, W. . Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验] . | Journal of Harbin Institute of Technology , 2023 , 55 (7) , 107-116 . |
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