[1]李文博,李海滨,赵桂娟,等.硫酸钙晶须水泥砂浆力学性能及增强机理[J].西安科技大学学报,2020,(03):417-423.[doi:10.13800/j.cnki.xakjdxxb.2020.0306]
 LI Wen-bo,LI Hai-bin,ZHAO Gui-juan,et al.Mechanical properties and strengthening mechanism of cement mortar with calcium sulfate whiskers[J].Journal of Xi'an University of Science and Technology,2020,(03):417-423.[doi:10.13800/j.cnki.xakjdxxb.2020.0306]
点击复制

硫酸钙晶须水泥砂浆力学性能及增强机理(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2020年03期
页码:
417-423
栏目:
出版日期:
2020-05-15

文章信息/Info

Title:
Mechanical properties and strengthening mechanism of cement mortar with calcium sulfate whiskers
文章编号:
1672-9315(2020)03-0417-07
作者:
李文博1李海滨1赵桂娟1王光辉2
(1.西安科技大学 建筑与土木工程学院,陕西 西安 710054; 2.中北工程设计咨询有限公司,陕西 西安 710068)
Author(s):
LI Wen-bo 1LI Hai-bin 1ZHAO Gui-juan 1WANG Guang-hui 2
(1.CCollege of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Zhongbei Engineering Design Consulting Co.,Ltd.,Xi'an 710068,China)
关键词:
水泥砂浆 硫酸钙晶须 力学强度 物理性能 增强机理
Keywords:
cement mortar CaSO4whiskers mechanical properties physical properties enhancement mechanism
分类号:
S 776.04
DOI:
10.13800/j.cnki.xakjdxxb.2020.0306
文献标志码:
A
摘要:
针对水泥砂浆使用环境的多样性要求,结合硫酸钙晶须的自身特点,为实现增强与增韧的目的,采用外掺法将硫酸钙晶须加入水泥砂浆,通过实验研究了2%,4%,6%和8%(质量百分数)掺量的硫酸钙晶须对水泥砂浆物理性能和力学性能的影响,提出了水泥砂浆工作性能最好,力学强度最优时的硫酸钙晶须掺量及水灰比,并通过微观试验分析了硫酸钙晶须水泥砂浆的强度增强机理。实验结果表明:水泥砂浆的凝结时间随硫酸钙晶须掺量的增大先延长后缩短,当硫酸钙晶须掺量为4%时,水泥砂浆的凝结时间最长; 当水灰比为0.5,硫酸钙晶须掺量为6%时,水泥砂浆的抗折抗压强度增强效果最佳; 硫酸钙晶须可以缓解水泥砂浆内部裂缝尖端的应力集中,阻碍裂纹发展,晶须与水泥基体界面的桥接效应,实现了整体的增强和增韧。
Abstract:
In view of the various requirements of the environment of cement mortar,and the characteristics of calcium sulfate whiskers,the external admixture method is used to add calcium sulfate whiskers to the cement mortar,in order to achieve the purpose of strengthening and toughening.Through experiments, the effects of calcium sulfate whiskers with 2%,4%,6% and 8%(mass percent)on the physical properties and mechanical properties of cement mortar have been analyzed.The calcium sulfate whisker's content and water cement ratio when cement mortar has the best working performance and the mechanical strength is optimal.The strength enhancement mechanism is analyzed by microscopic test.The experimental results show that the setting time of cement mortar is prolonged first and then shortened with the increase of calcium sulfate whisker content.When the content of calcium sulfate whisker is 4%,the cement mortar has the longest setting time; when the water-cement ratio is 0.5,the content of calcium sulfate whisker is 6%,and the cement mortar has the best effect of strengthening the flexural and compressive strength; the calcium sulfate whisker can alleviate the stress concentration at the crack tip of the cement mortar,and hinder the crack development.The bridging effectbetween the whisker and the cement matrix achieves overall reinforcement and toughening.

参考文献/References:

[1] Enrique García-Macías,Antonella D'Alessandro,Rafael Castro-Triguero,et al.Micromechanics modeling of the electrical conductivity of carbon nanotube cement-matrix composites[J].Composites Part B,2017,108:451-469. [2]吴福飞,侍克斌,董双快,等.掺合料和水胶比对水泥基材料水化产物和力学性能的影响[J].农业工程学报,2016,32(4):119-126. WU Fu-fei,SHI Ke-bin,DONG Shuang-kuai,et al.Influence of admixture and water-cement ratio on hydration products and mechanical properties of cement-based materials[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(4):119-126. [3]施 韬,李泽鑫,李闪闪.碳纳米管增强水泥基材料的自收缩及抗裂性能[J].复合材料学报,2019,36(6):1528-1535. SHI Tao,LI Ze-xin,LI Shan-shan.Autogenous shrinkage and crack resistance of carbon nanotubes(CNTS)reinforced cement based materials[J].Acta Materiae Compositae Sinica,2019,36(6):1528-1535. [4]李 黎,曹明莉,冯嘉琪.纤维增强水泥基复合材料的纤维混杂效应研究进展[J].应用基础与工程科学学报,2018,26(4):843-853. LI Li,CAO Ming-li,FENG Jia-qi.Research progress on fiber hybrid effect in fiber reinforced cementitious composite[J].Journal of Basic Science and Engineering,2018,26(4):843-853. [5]李 明,刘 萌,杨雨佳,等.碳酸钙晶须改善固井水泥浆性能研究[J].硅酸盐通报,2014,33(12):3145-3150,3158. LI Ming,LIU Men,YANG Yu-jia,et al.Calcium carbonate whisker improved the performance of oil and gas well cement[J].Bulletin of the Chinese Ceramic Society,2014,33(12):3145-3150,3158. [6]暴英波.纤维增强水泥稳定碎石的研究现状及展望[J].天津建设科技,2018,28(4):47-48. BAO Ying-bo.Research status and prospects of fiber reinforced cement stabilized macadam[J].Tianjin Construction Science and Technology,2018,28(4):47-48. [7]Radha Shivaramaiah,Wingyee Lee,Alexandra Navro-tsky,et al.Location and stability of europium in calcium sulfate and its relevance to rare earth recovery from phosphogypsum waste[J].American Mineralogist,2016,101(8):1854-1861. [8]张冬梅,耿 欧,赵园园.硫酸钙晶须对再生混凝土耐久性能的影响研究[J].混凝土,2017(2):21-23. ZHANG Dong-mei,GENG Ou,ZHAO Yuan-yuan.Study on the effects of calcium sulfate whisker on durability of recycled concrete[J].Concrete,2017(2):21-23. [9]张 弛.硫酸钙晶须对水泥基复合材料力学性能的影响研究[D].沈阳:东北大学,2015. ZHANG Chi.Effect study of calcium sulfate whiskers on mechanical properties of cement based composite material[D].Shenyang:Northeastern University,2015. [10]贾晓华,张永松,李春林,等.制备硫酸钙晶须的探讨[J].中国井矿盐,2018,49(5):4-6. JIA Xiao-hua,ZHANG Yong-song,LI Chun-lin,et al.Discussion on preparing calcium sulfate whisker[J].China Well and Rock Salt,2018,49(5):4-6. [11]Il-Wha Lee,Sukhoon Pyo.Experimental investigation on the application of quick-hardening mortar for converting railway ballasted track to concrete track on operating line[J].Construction and Building Materials,2017,133:154-162. [12]王露琦,熊道陵,李 洋,等.硫酸钙晶须制备及应用研究进展[J].有色金属科学与工程,2018,9(3):34-41. WANG Lu-qi,XIONG Dao-ling,LI Yang,et al.Progress in the preparation and application of calcium sulfate whiskers[J].Nonferrous Metals Science and Engineering,2018,9(3):34-41. [13]郭小阳,唐 琪,黄成霞,等.碳酸钙晶须对油井水泥增强抗收缩机理及应用[J].钻井液与完井液,2015,32(5):66-68,105-106. GUO Xiao-yang,TANG Qi,HUANG Cheng-xia,et al.Mechanism of strengthening and anti-shrinkage of calcium carbonate whisker to oil well cement and its application[J].Drilling Fluid & Completion Fluid,2015,32(5):66-68,105-106. [14]汪开放,耿 欧,赵园园.硫酸钙晶须再生混凝土工作性能试验研究[J].混凝土,2016(5):22-25. WANG Kai-fang,GENG Ou,ZHAO Yuan-yuan.Experimental study on working performance of calcium sulfate whisker recycled concrete[J].Concrete,2016(5):22-25. [15]ZHANG Cong,CAO Ming-li.Calcium carbonate whisker enhances mechanical properties of high strength cement mortar[J].Journal of Southeast University(English Edition),2012,28(3):331-336. [16]曹明莉,许 玲,张 聪.高延性纤维增强水泥基复合材料的微观力学设计、性能及发展趋势[J].硅酸盐通报,2015,43(5):632-642. CAO Ming-li,XU Ling,ZHANG Cong.Review on micromechanical design,performance and development tendency of engineered cementitious composite[J].Journal of the Chinese Ceramic Society,2015,43(5):632-642. [17]Acuña-Gutiérrez I O,Escobedo-Bocardo J C,Almanza-Robles J M,et al.Development of LiCl-containing calcium aluminate cement for bone repair and remodeling applications[J].Materials Science & Engineering,2017,70:357-363. [18]LONG Wu-jian,LI Hao-dao,WEI Jing-jie,et al.Sustainable use of recycled crumb rubbers in eco-friendly alkali activated slag mortar:dynamic mechanical properties[J].Journal of Cleaner Production,2018,204:1004-1015. [19]王鸿康,侯 炜,何伟艳,等.硫酸钙晶须制备的研究进展[J].内蒙古石油化工,2017,43(1):9-12. WANG Hong-kang,HOU Wei,HE Wei-yan,et al.Research progress in preparation of calcium sulfate whiskers[J].Inner Mongolia Petrochemical Industry,2017,43(1):9-12. [20]陈 畅,郭 政,伍勇华,等.无水硫酸钙晶须对不同种类石膏基复合材料性能的影响[J].人工晶体学报,2018,47(7):1371-1376. CHEN Chang,GUO Zheng,WU Yong-hua,et al.Effect of anhydrous calcium sulfate whisker on properties of different kinds of gypsum composite[J].Journal of Synthetic Crystals,2018,47(7):1371-1376. [21]姚 航.无机矿物纤维增强水泥砂浆的试验研究[D].大连:大连理工大学,2012. YAO Hang.Experimental study on inorganic mineral fiber reinforced cement motor[D].Dalian:Dalian University of Technology,2012. [22]卢小丽,苏 洁,李丽平.剑麻纤维砂浆抗渗防裂性能试验[J].土木工程与管理学报,2017,34(2):99-103. LU Xiao-li,SU Jie,LI Li-ping.Experiments on cracking impermeability of sisal fiber mortar[J].Journal of Civil Engineering and Management,2017,34(2):99-103. [23]张小婷,宋 强,汪 潇,等.脱硫石膏晶须对水泥基材增强行为的研究[J].硅酸盐通报,2017,36(4):1298-1302. ZHANG Xiao-ting,SONG Qiang,WANG Xiao,et al.Enhancement performance of desulfuration gypsum whisker on cementitious materials[J].Bulletin of the Chinese Ceramic Society,2017,36(4):1298-1302. [24]邓 双.多尺度无机晶须增强油井水泥基材料及机理研究[D].成都:西南石油大学,2017. DENG Shuang.Study on multi-scale inorganic whisker reinforced oil well cement based materials and mechanism[D].Chengdu:Southwest Petroleum University,2017. [25]刘 玲,殷 宁,亢茂青,等.晶须增韧复合材料机理的研究[J].材料科学与工程,2000(2):116-119,115. LIU Ling,YIN Ning,KANG Mao-qing,et al.Research on whisker toughening mechanism for composites[J].Materials Science & Engineering,2000(2):116-119,115.

备注/Memo

备注/Memo:
收稿日期:2019-10-23 责任编辑:李克永
基金项目:陕西省科技计划项目(2018SF-364); 陕西省交通科技项目(19-10T; 19-28K); 中央高校基本科研业务费专项资金资助(310831153409,300102218502,300102318401)
通信作者:李海滨(1980-),男,山东潍坊人,副教授,硕士生导师,E-mail:lihaibin1212@126.com
更新日期/Last Update: 2020-05-15