第二期_2021_《混凝土与水泥制品》杂志社

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



全部文章

第二期

内衬HDPE片材大口径钢筋混凝土排水管检测试验初探

吕根喜1，高武2，毛海明3，江晓华3，章拥军3

2021年第2期

摘要

引用本文

摘要：基于工程实际要求，对内衬高密度聚乙烯（HDPE）片材化学物理性能及内衬HDPE片材钢筋混凝土管节进行了试验研究，包括内衬HDPE单键和多键的抗拉拔试验、管节接头抗内水压和外水压试验、HDPE片材覆贴接头抗外水压试验、外压荷载试验，可为HDPE片材在钢筋混凝土排水管中的应用和推广提供参考。 Abstract: Based on the actual requirements of project, the chemical and physical properties tests of HDPE sheets and pipe section tests of large diameter HDPE lining reinforced concrete sewer pipes are carried out, including single and multiple bond pull-out tests of HDPE lining, internal and external water pressure tests of pipe joints, external water pressure test of concrete sewer pipe joint with HDPE sheet, interface and external pressure load tests, which can provide a reference for the application and promotion of HDPE sheet in the corrosion resistance of reinforced concrete sewer pipe.

吕根喜,高武,毛海明,等.内衬HDPE片材大口径钢筋混凝土排水管检测试验初探[J].混凝土与水泥制品,2021(2):37-43. LYU G X,GAO W,MAO H M,et al.Tests of Large Diameter HDPE Lining Reinforced Concrete Sewer Pipes[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):37-43.

PHC管桩抱箍式机械连接轴拉承载性能数值分析

安增军1,2，贺武斌3，刘佳龙4，戴亚1,2

2021年第2期

摘要

引用本文

摘要：基于ABAQUS有限元软件，模拟分析了PHC管桩抱箍式机械连接轴拉承载性能。结果表明：抱箍式机械连接的零部件均可满足PHC管桩桩身轴拉设计值要求；抱箍式机械连接轴拉力传力路线不直接，位移变形相对大；零部件应力分布相对不均匀，六角高强螺钉与U型抱箍卡之间存在先后屈服的现象。建议将U型抱箍卡上的六角高强螺钉孔设置为椭圆孔，预留一定的滑动空间，避免螺钉发生材料屈服现象。 Abstract: Based on ABAQUS, the axial tension bearing capacity of hoop type mechanical connection of PHC pile is analyzed by finite element method. The results show that the mechanical parts of hoop type connection joint can meet the bearing requirements of PHC piles axial tension design value; the tension transmission route of hoop type mechanical connection shaft is not direct, and the displacement deformation is relatively large; the stress distribution of parts is relatively uneven, and there is the phenomenon of yielding successively between hexagon high strength screw and U-shaped hoop clamp. It is suggested that the hexagon high-strength screw hole on the U-type hoop should be set as an ellipse hole, and a certain sliding space should be reserved to avoid the material yield phenomenon of the screw.

安增军,贺武斌,刘佳龙,等.PHC管桩抱箍式机械连接轴拉承载性能数值分析[J].混凝土与水泥制品,2021(2):44-48. AN Z J,HE W B,LIU J L,et al.Numerical Analysis of Axial Tension Bearing Capacity of Hoop Type Mechanical Connection of PHC Piles[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):44-48.

大跨度先张法预应力混凝土双T板的生产

刘洋，高名扬，任端城，袁继东，王靖鑫

2021年第2期

摘要

引用本文

摘要：大跨度先张法预应力混凝土双T板具有跨度大、结构性能好、成本低、整体性好等特点，被广泛应用于工业建筑。结合实际工程，介绍了大跨度双T板的生产工艺，并重点阐述了钢绞线张拉、预应力控制、混凝土浇筑和养护工艺，可为大跨度双T板的生产应用提供参考。 Abstract： Large-span pre-tensioned prestressed concrete double-T slabs have the advantages of large span, good structural performance, low cost, good integrity and are widely used in the industrial buildings. Combined with the practical engineering, the production technology of the double-T slab is introduced, and the steel strand tension, prestress control, concrete pouring and maintenance technology are described in detail, which can provide a reference for the production and application of long-span double-T slabs.

刘洋,高名扬,任端城,等.大跨度先张法预应力混凝土双T板的生产[J].混凝土与水泥制品,2021(2):49-50,60. LIU Y,GAO M Y,REN D C,et al.Manufacture of Large-span Pre-tensioned Prestressed Concrete Double-T Slabs[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):49-50,60.

纤维对含粗骨料超高性能混凝土高温性能的影响

钱云峰1，杨鼎宜1,2，夏旸昊1，陆仕祥3，王彤章1

2021年第2期

摘要

引用本文

摘要：为了探究改善超高性能混凝土（UHPC）高温性能的措施，从力学性能、质量损失、超声检测等方面研究了纤维（不掺纤维、单掺钢纤维、混掺钢纤维与合成纤维）对UHPC高温性能的影响。结果表明：当纤维掺量增加时，UHPC的工作性与抗压强度均随之下降，抗折强度则先升后降；随着目标温度的升高，UHPC的残余抗压强度先升后降，损伤逐步加重；纤维的加入可以延缓裂缝的发展，混掺钢纤维与合成纤维可以有效改善UHPC高温爆裂行为。 Abstract: In order to explore the measures to improve the high temperature performance of ultra-high performance concrete(UHPC), the influence of fiber(non-fiber, single steel fiber, mixed steel fiber and synthetic fiber) on the high temperature performance of UHPC was studied from the aspects of mechanical properties, mass loss and ultrasonic testing. The results show that when the fiber content increases, the workability and compressive strength of UHPC decrease, while the flexural strength increases first and then decreases. With the increase of the target temperature, the residual compressive strength increases first and then decreases. The addition of fiber can delay the development of cracks, and the mixing of steel fiber and synthetic fiber can effectively improve the high temperature burst behavior of UHPC.

钱云峰,杨鼎宜,夏旸昊,等.纤维对含粗骨料超高性能混凝土高温性能的影响[J].混凝土与水泥制品,2021(2):51-56. QIAN Y F,YANG D Y,XIA Y H,et al.Influence of Fiber on High Temperature Performance of Ultra-high Performance Concrete With Coarse Aggregate[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):51-56.

聚丙烯-玄武岩混杂纤维对陶粒混凝土力学性能的影响

朱红兵1，施旭刚1，李秀2

2021年第2期

摘要

引用本文

摘要：对掺加聚丙烯-玄武岩混杂纤维的陶粒混凝土进行了抗压强度、抗折强度、劈裂抗拉强度试验，得到了混杂纤维对陶粒混凝土力学性能的影响规律。结果表明：混杂纤维掺量为0.2%时，陶粒混凝土的抗压强度、劈裂抗拉强度、抗折强度提升幅度最大，分别较基准组提高了11.21%、30.73%、15.26%，但掺量过大时陶粒混凝土的力学性能会下降，甚至出现负效应；聚丙烯纤维与玄武岩纤维的混杂比为2∶1时，其对陶粒混凝土的增强效果较好；混杂纤维能增强陶粒混凝土的韧性，对抗折强度和抗拉强度提升效果明显，对抗压强度提升效果较小。 Abstract: The compressive strength, flexural strength and splitting tensile strength tests of ceramsite concrete with polypropylene-basalt hybrid fiber were carried out, and the influence rules of hybrid fiber on the mechanical properties of ceramsite concrete were obtained. The results show that when the hybrid fiber content is 0.2%, the compressive strength, splitting tensile strength and flexural strength of ceramsite concrete have the largest increase, which are increased by 11.21%, 30.73% and 15.26% respectively compared with blank group, but when the hybrid fiber content is too high, the mechanical properties of ceramsite concrete will be decreased or even have negative effect. When the mixing ratio of polypropylene fiber and basalt fiber is 2∶1, the reinforcement effect of ceramsite concrete is great. The toughness of ceramsite concrete can be enhanced by adding hybrid fiber, and the tensile strength and flexural strength are obviously improved, but the effect of improving compressive strength is small.

朱红兵,施旭刚,李秀.聚丙烯-玄武岩混杂纤维对陶粒混凝土力学性能的影响[J].混凝土与水泥制品,2021(2):57-60. ZHU H B,SHI X G,LI X.Influence of Polypropylene-basalt Hybrid Fiber on Mechanical Properties of Ceramsite Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2)::57-60.

基于振动搅拌技术的碳纤维接地导电混凝土制备及性能研究

程育林1，周迁1，刘宇彬1，李兴泽1，冯新军2

2021年第2期

摘要

引用本文

摘要：采用振动搅拌技术，选取碳纤维为导电相制备用于杆塔基础接地的导电混凝土，并对碳纤维导电混凝土的振动搅拌工艺参数、配合比和接地性能进行了试验研究。结果表明：采用振动搅拌技术制备碳纤维导电混凝土的最优工艺参数组合为：干拌时间10 s、湿拌时间70 s、加碳纤维搅拌时间60 s；最优配合比为：碳纤维掺量0.3%、水灰比0.46、单位用水量200 kg、砂率36%；此工艺参数和配合比下，导电混凝土的28 d抗压强度为46.3 MPa，抗折强度为5.7 MPa，28 d电阻率为2.09 Ω·m，导电性能优良，满足输电线路杆塔基础接地的性能要求。 Abstract: Based on the vibration mixing technology, carbon fiber was selected as the conductive phase to prepare the conductive concrete for tower foundation grounding. The vibration mixing process parameters, mix proportion and grounding performance of carbon fiber conductive concrete were studied. The results show that the best combination of process parameters for the preparation of carbon fiber conductive concrete are: dry mixing time of 10 s, wet mixing time of 70 s and carbon fiber mixing time of 60 s. The best mix proportion is: carbon fiber content of 0.3%, water cement ratio of 0.46, unit water ues of 200 kg, sand ratio of 36%. Under this process parameter and mix proportion, the 28 d compressive strength and bending strength of the conductive concrete are 46.3 MPa and 5.7 MPa respectively, and the 28 d resistivity of the conductive concrete is 2.09 Ω·m, which has excellent electrical conductivity and meets the requirements of the grounding performance of the transmission line tower foundation.

程育林,周迁,刘宇彬,等.基于振动搅拌技术的碳纤维接地导电混凝土制备及性能研究[J].混凝土与水泥制品,2021(2):61-64,100. CHENG Y L,ZHOU Q,LIU Y B,et al.Study on Preparation and Performance of Carbon Fiber Grounded Conductive Concrete Based on Vibration Mixing Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):61-64,100.

粉煤灰纤维架构弹性保温隔热材料的研究

刘海顺1，罗志明1，程亚军1，龚小平2，王建东3

2021年第2期

摘要

引用本文

摘要：选用了粉煤灰纤维、超细粉煤灰纤维作为空间架构材料，采用阴离子表面活性剂发泡，以纯熟料水泥凝胶硬化定型，辅以真空抽吸破泡，通过充分干燥及表面防水处理工艺制得了粉煤灰纤维架构弹性保温隔热材料。结果表明：当超细粉煤灰纤维掺量为5%~15%、粉煤灰纤维与纯熟料水泥质量比为0.25、纯熟料水泥掺量为5%~20%时，材料的导热系数普遍在0.04~0.06 W/（m·K）之间，表观密度集中在80~150 kg/m3，抗压强度普遍低于0.20 MPa，所制得的保温隔热材料具有一定的弹性，永久变形量在0.050~0.090 mm之间。 Abstract: Fly ash fiber and ultra-fine fly ash fiber were selected as space structure materials. The anionic surfactant was used for foaming, the pure clinker cement gel was used to harden the shape, and the vacuum suction was used to break the foam, and the fly ash fiber structure elastic thermal insulation material was prepared through full drying and surface waterproof treatment. The results show that when the content of ultra-fine fly ash fiber is 5%~15%, the mass ratio of fly ash fiber to pure clinker cement is 0.25, and the content of pure clinker cement is 5%~20%, the thermal conductivity of the material is universal between 0.04~0.06 W/（m·K）, the apparent density is concentrated in 80~150 kg/m3, and the compressive strength is generally lower than 0.20 MPa. The prepared thermal insulation material has certain elasticity and the permanent deformation is between 0.050~0.090 mm.

刘海顺,罗志明,程亚军,等.粉煤灰纤维架构弹性保温隔热材料的研究[J].混凝土与水泥制品,2021(2):65-68. LIU H S,LUO Z M,CHENG Y J,et al.Study on Elastic Thermal Insulation Materials with Fly Ash Fiber Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):65-68.

新型预制低层装配式剪力墙抗震性能试验研究

赵阳1，王二成1,2，孔德昭3，孔德鹏3，李彦苍1,2

2021年第2期

摘要

引用本文

摘要：提出了一种适用于低层建筑的装配式剪力墙结构，并对3个足尺预制剪力墙试件进行了低周往复加载试验。结果表明：在合理范围内增加轴压比, 墙体的承载力有明显提高，两个试件都是延性破坏，延性和耗能能力均有所增强；减小剪跨比会使墙体开裂荷载和原始刚度变大，但延性变差, 水泥砂浆层出现脆性破坏。 Abstract: A prefabricated shear wall structure for low rise buildings was put forward, low cyclic loading experiments were conducted on three full-scale precast shear wall specimens. The results show that with the increase of axial pressure ratio, the bearing capacity of the low-rise precast concrete shear wall specimen can be enhanced obviously. Two walls are ductile failure and the ductility and energy consumption capacity are slightly enhanced. Reduction of shear span ratio of wall can improve the cracking performance and initial stiffness, which can obviously reduce the ductility of the wall, and the shear slip failure of the cement mortar is produced.

赵阳,王二成,孔德昭,等.新型预制低层装配式剪力墙抗震性能试验研究[J].混凝土与水泥制品,2021(2):69-73. ZHAO Y,WANG E C,KONG D Z,et al.Experimental Research on Seismic Performance of New Low-rise Precast Concrete Shear Walls[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):69-73.

双重耗能摇摆桁架-钢框架结构体系的抗震性能分析

仝强1，叶晓康1,2，常军1

2021年第2期

摘要

引用本文

摘要：为了提高结构的抗震性能，提出了一种双重耗能摇摆桁架-钢框架结构体系，即在摇摆桁架和钢框架连接处安装黏滞阻尼器，并在桁架底部设置自复位支撑（SCED）。建立了该系统的数值模型，并与摇摆桁架-钢框架对比分析，以研究其在地震下的抗震性能。结果表明：黏滞阻尼器在地震作用下充分发挥耗能能力，自复位支撑在地震作用下的残余应变基本为零，并能为结构提供足够的自复位能力，结构的抗震性能得到了很大提高。 Abstract: To improve the seismic performance of the structure, a double energy consumption rocking truss-steel frame structure system is put forward, that is, dampers are installed at the connection between the rocking truss and the steel frame, and self-centering energy dissipates (SCED) are equipped at the bottom of the truss. The numerical model of the system is established and compared with the rocking truss-steel frame to study its seismic performance. The results show that the viscous dampers fully exert its energy dissipation capacity, and the residual strain of SCED is close to zero, which can provide sufficient self-centering capability for the structure and improve structural seismic performance.

仝强,叶晓康,常军.双重耗能摇摆桁架-钢框架结构体系的抗震性能分析[J].混凝土与水泥制品,2021(2):74-78. TONG Q,YE X K,CHANG J.Seismic Performance Analysis of Double Energy Dissipation Rocking Truss-steel Frame Structure System[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):74-78.

早龄期普通混凝土直剪性能及损伤耗能分析

刘杰，吴辉琴，陈宇良，晏方

2021年第2期

摘要

引用本文

摘要：为了研究早龄期普通混凝土直剪作用下的力学性能，完成了12个普通混凝土试件的直剪试验，获取了试件的破坏形态及直剪荷载-位移全过程曲线，分析了直剪作用下龄期对普通混凝土直剪强度、峰值变形、变形模量、损伤演变、能量耗散等力学特征参数的影响规律。结果表明：龄期越长，受剪荷载-变形曲线上升段越陡峭；当龄期≤3 d时，混凝土断面剪切破坏形态为骨料与水泥基体之间界面的黏结破坏，当龄期≥7 d时，剪切破坏形态为骨料与水泥基体之间界面的黏结破坏与粗骨料本身的剪断破坏；随着龄期的延长，普通混凝土试件的峰值剪切变形减小，直剪强度、变形模量和能量耗散系数增大，混凝土损伤的出现变晚。 Abstract: In order to study the mechanical properties of ordinary concrete at early age under direct shear, a total of 12 test blocks were designed and completed for the direct shear. The failure patterns and direct shear load-displacement process curves of the specimens were obtained, and the influence rules of mechanical properties such as shear strength, peak deformation, deformation modulus, damage evolution and energy dissipation of ordinary concrete were analyzed at different ages under direct shear. The results show that the longer the age, the steeper the rising section of the shear load-deformation curve. When the age is less than or equal to 3 d, the shear failure of the concrete section is the bond failure between the aggregate and the cement matrix. When the age is greater than 7 d, the shear failure form is the bond failure of the interface between the aggregate and the cement matrix and the shear failure of the coarse aggregate. As the age increases, the peak shear deformation of the ordinary concrete specimen decreases, the shear strength, deformation modulus and energy dissipation coefficient increase, and the appearance of concrete damage becomes later.

刘杰,吴辉琴,陈宇良,等.早龄期普通混凝土直剪性能及损伤耗能分析[J].混凝土与水泥制品,2021(2):79-83. LIU J,WU H Q,CHEN Y L,et al.Analysis of Direct Shear Performance and Damage Energy Consumption of Ordinary Concrete at Early Age[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(2):79-83.

2

3

总访问量 468,401 网站统计

官方微信公众号关闭

关于我们 | 联系我们 | 订购杂志 | 回到顶部

苏ICP备10086386号

网站建设：中企动力苏州