|本期目录/Table of Contents|

[1]高小建,巴恒静,杨英姿.矿物掺和料对混凝土早期开裂的影响[J].建筑科学与工程学报,2006,23(04):19.
　GAO Xiao-jian,BA Heng-jing,YANG Ying-zi.Effect of Mineral Admixture on Early Age Cracking of Concrete[J].Journal of Architecture and Civil Engineering,2006,23(04):19.
点击复制

矿物掺和料对混凝土早期开裂的影响(PDF)
分享到：

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
23卷
期数:
2006年04期
页码:
19
栏目:
出版日期:
2006-12-20

文章信息/Info

Title:
Effect of Mineral Admixture on Early Age Cracking of Concrete
作者:
高小建，巴恒静，杨英姿
哈尔滨工业大学 土木工程学院,黑龙江 哈尔滨 150090
Author(s):
GAO Xiao-jian, BA Heng-jing, YANG Ying-zi
School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
关键词:
混凝土;  早期开裂;  矿物掺和料;  自收缩;  干燥收缩;  徐变
Keywords:
concrete;  early age cracking;  mineral admixture;  autogenous shrinkage;  drying shrinkage;  creep
分类号:
TU528.041
DOI:
-
文献标志码:
A
摘要:
针对高性能混凝土普遍存在的早期开裂问题,采用板式混凝土开裂架研究了掺硅灰、粉煤灰、矿渣粉对混凝土早期开裂的影响规律,同时测量了混凝土早期自收缩及在干燥条件下的总收缩。试验结果表明:掺硅灰对混凝土在干燥条件下的早期总收缩影响不大,但使混凝土早期开裂加重; 掺粉煤灰使混凝土早期自收缩明显减小,而总收缩并不降低; 掺矿渣粉使混凝土早期自收缩和总收缩都增大,而掺粉煤灰和矿渣粉均使混凝土早期抗裂性改善,且掺粉煤灰抗裂性优于矿渣粉。掺硅灰混凝土早期抗裂性差的主要原因是混凝土早期弹性模量增大,徐变和应力松弛能力降低; 而掺矿渣粉或粉煤灰混凝土早期抗裂性改善的主要原因在于混凝土早期弹性模量减小、徐变和松弛能力提高。
Abstract:
Early age cracking has been an ever-present problem during the application of high performance concrete. Influences of silica fume, fly-ash and ground granulated blast-furnace slag(GGBS)on early age cracking tendency of concrete were studied using the plate type concrete cracking frame, and autogenous shrinkage, total shrinkage of early age concrete under the drying condition were also measured in this experiment. The test results show that the addition of silica fume worsens the early age cracking of concrete, though it has little influence on the total shrinkage of early age concrete under drying condition. The addition of fly-ash reduces evidently the early age autogenous shrinkage of concrete and it doesn't decrease the total shrinkage of concrete. The addition of GGBS increases both autogenous shrinkage and total shrinkage of concrete at early ages. However, the addition of fly-ash or GGBS improves the early age cracking resistance of concrete, and fly-ash exceeds GGBS. As a result, the main reason of the lower cracking resistance of the silica fume concrete is that the addition of silica fume increases the elastic modulus and reduces the creep stress relaxation capability of concrete at early ages. The higher cracking resistance of the concrete added with fly-ash or GGBS is due to the lower elastic modulus and the better creep stress relaxation capability of concretes at early ages.

参考文献/References:

[1] JENSEN A D,CHATTERJI S.State of the Art Report on Micro-cracking and Lifetime of Concrete:PartⅠ[J].Materials and Structures,1996,29(1):3-8.
[2]GUSE U,HILSDORF H K.Surface Cracking of High Strength Concrete[C]//WITTMANN F H,SCHWESINGER P.High Performance Concrete:Material Properties and Design.Freiburg:Aedificatio Verlag Gmbh,1995:69-89.
[3]WIEGRINK K,MARIKUNTE S,SHAH S P.Shrinkage Cracking of High-Strength Concrete[J].ACI Materials Journal,1996,93(5):409-415.
[4]梁文泉,王信刚,何 真,等.矿渣微粉掺量对混凝土收缩开裂的影响[J].武汉大学学报:工学版,2004,37(1):77-81. LIANG Wen-quan,WANG Xin-gang,HE Zhen,et al.Influence of GGBFS Content on Shrinkage Cracking of Concrete[J].Engineering Journal of Wuhan University,2004,37(1):77-81.
[5]RADOCEA A.Autogenous Volume Change of Concrete at Very Early Age[J].Magazine of Concrete Research,1998,50(2):107-109.
[6]贺拴海,吕颖钊.考虑材料耐久性的在役混凝土结构可靠度研究[J].建筑科学与工程学报,2005,22(1):71-75. HE Shuan-hai,LU Ying-zhao.Reliability Research of Existing Reinforced Concrete Structures[J].Journal of Architecture and Civil Engineering,2005,22(1):71-75.
[7]马玉平,马 昕,崔建涛.高强度混凝土试验研究[J].建筑科学与工程学报,2005,22(3):67-69. MA Yu-ping,MA Xin,CUI Jian-tao.Experimental Research on High-Strength Concrete[J].Journal of Architecture and Civil Engineering,2005,22(3):67-69.
[8]王大宏.自密实轻骨料高性能混凝土配合比优化设计[J].建筑科学与工程学报,2006,23(2):68-71. WANG Da-hong.Optimal Design of Mixing Ratio for Self-compacting Light-Aggregate High Performance Concrete[J].Journal of Architecture and Civil Engineering,2006,23(2):68-71.
[9]高小建,何忠茂,杨英姿,等.周边约束状态下板式混凝土早期开裂模式及收缩应变的分布[J].硅酸盐学报,2004,32(3):334-339. GAO Xiao-jian,HE Zhong-mao,YANG Ying-zi,et al.Distribution of Shrinkage Strain and Induced Cracks of a Round Restrained Concrete Plate at Early Age[J].Journal of the Chinese Ceramic Society,2004,32(3):334-339.
[10]高小建,巴恒静,祁景玉.混凝土水灰质量比与其早期收缩关系的研究[J].同济大学学报:自然科学版,2004,32(1):67-71. GAO Xiao-jian,BA Heng-jing,QI Jing-yu.Study on Relationship Between Water-Cement Mass Ratio and Early Age Shrinkage of Concrete[J].Journal of Tongji University:Natural Science,2004,32(1):67-71.
[11]SAHAH A A,DAVID A L.Creep,Shrinkage,and Cracking of Restrained Concrete at Early Age[J].ACI Materials Journal,2001,98(4):323-331.

相似文献/References:

[1]单炜,张绍逸.BFRP筋与混凝土的粘结-滑移本构关系[J].建筑科学与工程学报,2013,30(02):15.
　SHAN Wei,ZHANG Shao-yi.[J].Journal of Architecture and Civil Engineering,2013,30(04):15.
[2]马志鸣,赵铁军,巴光忠,等.冻融环境下引气混凝土的抗钢筋锈蚀能力研究[J].建筑科学与工程学报,2014,31(03):85.
　MA Zhi-ming,ZHAO Tie-jun,BA Guang-zhong,et al.Study on Ability of Resistance to Steel Corrosion of Air Entraining Concrete Under Freezethaw Environment[J].Journal of Architecture and Civil Engineering,2014,31(04):85.
[3]李苹,任晓丹,李 杰.基于隐式梯度理论的混凝土细观随机断裂模型[J].建筑科学与工程学报,2014,31(03):90.
　LI Ping,REN Xiao-dan,LI Jie.Meso Stochastic Fracture Model for Concrete Based on Implicit Gradient Theory[J].Journal of Architecture and Civil Engineering,2014,31(04):90.
[4]翟 越,赵均海,艾晓芹,等.基于统一强度理论的巴西圆盘劈裂强度分析[J].建筑科学与工程学报,2015,32(03):46.
　ZHAI Yue,ZHAO Jun-hai,AI Xiao-qin,et al.Analysis on Splitting Strength of Brazilian Disc Based on Unified Strength Theory[J].Journal of Architecture and Civil Engineering,2015,32(04):46.
[5]王 钧,任靖豪,郭大鹏.短切玄武岩纤维混凝土基本力学性能的尺寸效应[J].建筑科学与工程学报,2015,32(05):96.
　WANG Jun,REN Jing-hao,GUO Da-peng.Size Effect of Basic Mechanical Properties of Chopped Basalt Fiber Reinforced Concrete[J].Journal of Architecture and Civil Engineering,2015,32(04):96.
[6]吴方伯,张 航,李 钧,等.不同箱体形式混凝土密肋空心楼盖受力性能试验[J].建筑科学与工程学报,2016,33(02):7.
　WU Fang-bo,ZHANG Hang,LI Jun,et al.Experiment on Mechanical Behavior of Concrete Hollow-ribbed Floor with Different Box[J].Journal of Architecture and Civil Engineering,2016,33(04):7.
[7]孙 昊,李继超,甘 丹.肋间距超限钢筋与混凝土间粘结强度试验[J].建筑科学与工程学报,2016,33(02):107.
　SUN Hao,LI Ji-chao,GAN Dan.Experiment on Bond Strength Between Steel and Concrete with Overrun Rib Spacing[J].Journal of Architecture and Civil Engineering,2016,33(04):107.
[8]乔宏霞,路承功,李 宇,等.宁夏盐渍土地区现场暴露混凝土耐久性损伤评价试验[J].建筑科学与工程学报,2016,33(06):44.
　QIAO Hong-xia,LU Cheng-gong,LI Yu,et al.Experiment on Durability Damage Assessment of Concrete Field Exposed in Saline Soil Area of Ningxia[J].Journal of Architecture and Civil Engineering,2016,33(04):44.
[9]肖 杰,屈文俊,朱 鹏.不同粗细骨料组合下的混凝土耐硫酸腐蚀研究[J].建筑科学与工程学报,2016,33(06):81.
　XIAO Jie,QU Wen-jun,ZHU Peng.Research on Concrete Sulfuric Acid Resistance with Different Types of Coarse and Fine Aggregates[J].Journal of Architecture and Civil Engineering,2016,33(04):81.
[10]刘汉昆,孙超,李杰.基于CT扫描的混凝土三维细观数值模拟[J].建筑科学与工程学报,2010,27(01):54.
　LIU Han-kun,SUN Chao,LI Jie.Three-demensional Mesoscopic Numerical Simulation of Concrete Based on CT Scan[J].Journal of Architecture and Civil Engineering,2010,27(04):54.

备注/Memo

备注/Memo:
收稿日期:2006-11-01
基金项目:国家自然科学基金项目(50408016)
作者简介:高小建(1976-),男,陕西白水人,副教授,工学博士,博士后,E-mail:xjgao2002@yahoo.com.cn。
更新日期/Last Update: 2006-12-20