+高级检索
首页 > 过刊浏览>2021年第24卷第3期 >499-507. DOI:103969/j.issn.1007 9629202103008
PDF HTML阅读 XML下载 导出引用 引用提醒
轻集料对超高性能混凝土工作和力学性能的影响
作者:
基金项目:

国家自然科学基金资助项目(51878003)；安徽省高校自然科学研究重大项目(KJ2019ZD55)；安徽省高校优秀青年人才支持计划重点项目(gxyqZD2019055)；安徽建筑大学博士启动基金项目(2018QD30)


Effect of Lightweight Aggregate on Workability and Mechanical Properties of Ultra high Performance Concrete
Author:
  • 摘要
    • | |
  • 访问统计
    • |
  • 参考文献 [58]
    • |
  • 相似文献 [20]
    • | | |
  • 文章评论
    摘要:

    基于颗粒最紧密堆积原理，确定了超高性能混凝土的胶凝材料组成和轻集料颗粒级配，优化得到了轻集料超高性能混凝土(LUHPC)的基准配合比.研究了轻集料粒形、轻集料预吸水率和掺量对LUHPC工作性能和力学性能的影响规律，并利用超景深三维数码显微镜、扫描电子显微镜等探究了轻集料对LUHPC性能的影响机理.结果表明：轻集料的粒形和预吸水率是影响LUHPC工作性能和力学性能的关键因素；随着轻集料粒形由碎石形转变为球形，LUHPC的工作性能和力学性能均显著优化；随着轻集料预吸水率的增加，LUHPC工作性能改善，但抗压强度和劈裂抗拉强度均呈现先增加后降低趋势；随着轻集料掺量的增加，LUHPC工作性能和力学性能均先提升后降低；轻集料主要通过增大颗粒球形度、改善轻集料水泥石界面黏结性和预湿内养护来提升LUHPC的工作性能和力学性能.

    Abstract:

    Based on the particle dense packing theory, the composition of cementitious materials and particle gradation of lightweight aggregate in ultra high performance concrete were determined. On this basis, the basic mix proportion of ultra high performance concrete with lightweight aggregate(LUHPC) was optimized. The effects of particle shape, pre absorption ratio and content of lightweight aggregate on the workability and mechanical properties of LUHPC were studied. Besides, the mechanism of the effect of lightweight aggregate on the properties of LUHPC was investigated by ultra depth field 3D digital microscope and scanning electron microscope. The results show that particle shape and pre absorption ratio are the key factors that determine the workability and mechanical properties of LUHPC. The workability and mechanical properties of LUHPC with spherical lightweight aggregate are superior to UHPC with crushed lightweight aggregate. With the increase of pre absorption of lightweight aggregate, the workability of LUHPC is improved, but the compressive strength and splitting tensile strength of LUHPC increase first and then decrease. With the increase of lightweight aggregate content, the workability and mechanical properties of LUHPC are improved first and then reduced. In addition, lightweight aggregate mainly improves the workability and mechanical properties of LUHPC by improving the sphericity of aggregate, the adhesion between lightweight aggregate and cement matrix and by providing internal curing effect.

    参考文献
    [1]贾佳.材料组成对常温养护UHPC浆体力学性能影响的研究[D].长沙:湖南大学,2018.
    JIA Jia.Effect of material composition on the mechanical properties of UHPC paste prepared at room temperature[D].Changsha:Hunan University,2018.(in Chinese)
    [2]WANG D,SHI C,WU Z,et al.A review on ultra high performance concrete:Part Ⅱ.Hydration,microstructure and properties[J].Construction & Building Materials,2015,96:368 377.
    [3]SHI C,WU Z,XIAO J,et al.A review on ultra high performance concrete:Part Ⅰ.Raw materials and mixture design[J].Construction and Building Materials,2015,101:741 751.
    [4]冯乃谦.高性能与超高性能混凝土技术[M].北京:中国建筑工业出版社,2015:10 11.
    FENG Naiqian.Technology of HPC & UHPC[M].Beijing:China Architecture & Building Press,2015:10 11.(in Chinese)
    [5]TAM C M,TAM V W Y,NG K M.Assessing drying shrinkage and water permeability of reactive powder concrete produced in Hong Kong[J].Construction and Building Materials,2016,26(1):79 89.
    [6]吴中伟,廉慧珍.高性能混凝土[M].北京:中国铁道出版社.1999:389 392.
    WU Zhongwei,LIAN Huizhen.High performance concrete[M].Beijing:China Railway Publishing House,1999:389 392.(in Chinese)
    [7]付泽东,吕林女,肖静,等.CSA膨胀剂对超高性能混凝土性能的影响[J].材料科学与工程学报,2019,37(4):559 564,594.
    FU Zedong,L Linnü,XIAO Jing,et al.Effect of calcium sulphoaluminate expansive admixture on properties of ultra high performance concre[J].Journal of Materials Science & Engineering,2019,37(4):559 564,594.(in Chinese)
    [8]黄政宇,王嘉.高吸水性树脂对超高性能混凝土性能的影响[J].硅酸盐通报,2012,31(3):539 544.
    HUANG Zhengyu,WANG Jia.Effects of SAP on the performance of UHPC[J].Bulletin of the Chinese Ceramic Society,2012,31(3):539 544.(in Chinese)
    [9]JUSTS J,WYRZYKOWSKI M,BAJARE D,et al.Internal curing by superabsorbent polymers in ultra high performance concrete[J].Cement and Concrete Research,2015,76:82 90.
    [10]LIU J,SHI C,MA X,et al.An overview on the effect of internal curing on shrinkage of high performance cement based materials[J].Construction and Building Materials,2017,146:702 712.
    [11]CWIRZEN A,PENTTALA V,VORNANEN C.Reactive powder based concretes:Mechanical properties,durability and hybrid use with OPC[J].Cement and Concrete Research,2008,38(10):1217 1226.
    [12]丁庆军,胡俊,刘勇强,等.轻质超高性能混凝土的设计与研究[J].混凝土,2019(9):1 5.
    DING Qingjun,HU Jun,LIU Yongqiang,et al.Research on preparation and performance of lightweight ultra high performance concrete[J].Concrete,2019(9):1 5.(in Chinese)
    [13]丁庆军,鄢鹏,胡曙光,等.一种轻质低收缩超高性能混凝土及其制备方法:ZL 2017112330519[P].2019 11 26.
    DING Qingjun,YAN Peng,HU Shuguang,et al.A lightweight and low shrinkage ultra high performance concrete and its preparation method:ZL 2017112330519[P].2019 11 26.(in Chinese)
    [14]张高展,魏琦,丁庆军,等.一种免蒸养轻质超高性能混凝土及其制备方法:ZL2019103554774[P].2020 10 02.
    ZHANG Gaozhan,WEI Qi,DING Qingjun,et al.A lightweight and autoclaving free ultra high performance concrete and its preparation method:ZL2019103554774[P].2020 10 02.(in Chinese)
    [15]JONES M R,ZHENG L,NEWANDS M D.Comparison of particle packing models for proportioning concrete constitutents for minimum voids ratio[J].Materials & Structures,2002,35(5):301 309.
    [16]邹伟,尹健,李益进.水泥复合胶凝材料体系密实模型研究[J].混凝土,2010(10):20 24.
    ZOU Wei,YIN Jian,LI Yijin.Study on dense packing model of cementitious materials[J].Concrete,2010(10):20 24.(in Chinese)
    [17]WANG X,WANG K,TAYLOR P,et al.Assessing particle packing based self consolidating concrete mix design method[J].Construction & Building Materials,2014,70:439 452.
    [18]高丹盈,刘建秀.钢纤维混凝土基本理论[M].北京:科学技术文献出版社,1994.
    GAO Danying,LIU Jianxiu.Basic theory of steel fiber reinforced concrete[M].Beijing:Science and Technology Literature Press,1994.(in Chinese)
    [19]孙伟,MANDEL J A.纤维间距对界面层的影响[J].硅酸盐学报,1989,17(3):76 81.
    SUN Wei,MANDEL J A.Effects of fiber spacing on interfacial layers[J].Journal of the Chinese Ceramic Society,1989,17(3):76 81.(in Chinese)
    [20]胡翱翔,梁兴文,李东阳,等.超高性能混凝土配合比设计及其受拉性能[J].湖南大学学报,2018,291(3):39 46.(in Chinese)
    HU Aoxiang,LIANG Xingwen,LI Dongyang,et al.Mix design method and uniaxial tensile characteristics of ultra high performance concrete[J].Journal of Hunan University,2018,291(3):39 46.(in Chinese)
    [21]王德辉.粗骨料对自密实混凝土工作性能的影响[J].重庆建筑,2010,9(5):20 23.
    WANG Dehui.Effects of coarse aggregates on self compacting concretes working performances[J].Chongqing Architecture,2010,9(5):20 23.(in Chinese)
    [22]吴波,李固华.骨料粒形的评定方法及对混凝土工作性能的影响[J].建筑科学,2014,30(11):93 97.
    WU Bo,LI Guhua.Evaluation method of aggregate grain shape and its impact on the concrete performance[J].Building Science,2014,30(11):93 97.(in Chinese)
    [23]檀春丽.非粘土陶粒及混凝土性能研究[D].哈尔滨:哈尔滨工业大学,2009.
    TAN Chunli.Research on non clay ceramisite and its concrete performance[D].Harbin:Harbin Institute of Technology,2009.(in Chinese)
    [24]KAPLAN M F.Flexural and compressive strength of concrete as affected by the properties of coarse aggregates[J].Journal of American Concrete Institute,1959,30(11):1193.
    [25]李洋.轻集料高强混凝土界面区形成与作用机制研究[D].合肥:安徽建筑大学,2016.
    LI Yang.Researches on the formation and action mechanism of interfacial transition zone in light aggregate high strength concrete[D].Hefei:Anhui Jianzhu University,2016.(in Chinese)
    [26]LO T Y,CUI H Z,LI Z G.Influence of aggregate pre wetting and fly ash on mechanical properties of lightweight concrete[J].Waste Management,2004,24(4):333 338.
    [27]杨宇婷.桥面铺装陶砂轻集料混凝土强度性能研究[J].北方交通,2018,303(7):91 94.
    YANG Yuting.Research on strength performance of haycite for light aggregate concrete of bridge deck pavement[J].Northern Territory,2018,303(7):91 94.(in Chinese)
    [28]胡曙光,王发洲,丁庆军.轻集料与水泥石的界面结构[J].硅酸盐学报,2005,33(6):713 717.
    HU Shuguang,WANG Fazhou,DING Qingjun.Interface structure between lightweight aggregate and cement paste[J].Journal of the Chinese Ceramic Society,2005,33(6):713 717.(in Chinese)
    [29]GOKTEPE A B,SEZER A.Effect of particle shape on density and permeability of sands[J].Geotechnical Engineering,2010,163(6):307 320.
    [30]王蕴嘉,宋二祥.堆石料颗粒形状对堆积密度及强度影响的离散元分析[J].岩土力学,2019,40(6):2416 2426.
    WANG Yunjia,SONG Erxiang.Discrete element analysis of the particle shape effect on packing density and strength of rockfills[J].Rock and Soil Mechanics,2019,40(6):2416 2426.(in Chinese)
    [31]焦双健,郭勇.单一骨料形状对混凝土性能影响的数字模拟[J].建材世界,2012(3):12 15.
    JIAO Shuangjian,GUO Yong.Digital simulation of single aggregate shape on concrete performance[J].Building Materials World,2012(3):12 15.(in Chinese)
    [32]BURCU A,MEHMET A T.Optimisation of using lightweight aggregates in mitigating autogenous deformation of concrete[J].Construction and Building Materials,2009,23(1):353 363.
    [33]韩宇栋,张君,王振波.预吸水轻骨料对高强混凝土早期收缩的影响[J].硅酸盐学报,2013,41(8):1070 1078.
    HAN Yudong,ZHANG Jun,WANG Zhenbo.Influence of pre wetted lightweight aggregate on early age shrinkage of high strength concrete[J].Journal of the Chinese Ceramic Society,2013,41(8):1070 1078.(in Chinese)
    [34]SEMION Z,KONSTANTIN K,ARNON B.Effect of hybrid curing on cracking potential of high performance concrete[J].Cement and Concrete Research,2013,54:36 42.
    [35]张高展,魏琦,丁庆军,等.轻集料吸水率对轻集料水泥石界面区特性的影响[J].建筑材料学报,2018,21(5):24 28.
    ZHANG Gaozhan,WEI Qi,DING Qingjun,et al.Influence of water absorption ratio of lightweight aggregate on characteristics of interfacial transition zone between lightweight aggregate and cement[J].Journal of Building Materials,2018,21(5):24 28.(in Chinese)
    [36]DING Q J,XIANG W H,ZHANG G Z,et al.Effect of pre wetting lightweight aggregates on the mechanical performances and microstructure of cement pastes[J].Journal of Wuhan University of Technology Mater,2020,35(1):140 146.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

张高展,王宇譞,葛竞成,杨军,魏琦.轻集料对超高性能混凝土工作和力学性能的影响[J].建筑材料学报,2021,24(3):499-507

复制
分享
文章指标
  • 点击次数:443
  • 下载次数: 86
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 收稿日期:2020-08-12
  • 最后修改日期:2020-09-01
  • 在线发布日期: 2021-07-02
文章二维码
您是第 2062600 位访问者
主管单位 ：教育部
主办单位 ：同济大学
地址 ：上海市四平路1239号同济大学综合楼1701室
电话 ：021-65981597 传真 ：021-65981597
建筑材料学报 ® 2025 版权所有