|本期目录/Table of Contents|

[1]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):44-52.
 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(06):44-52.
点击复制

宁夏盐渍土地区现场暴露混凝土耐久性损伤评价试验(PDF)
分享到:

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

卷:
33卷
期数:
2016年06期
页码:
44-52
栏目:
出版日期:
2016-11-30

文章信息/Info

Title:
Experiment on Durability Damage Assessment of Concrete Field Exposed in Saline Soil Area of Ningxia
作者:
乔宏霞路承功李 宇关利娟
兰州理工大学甘肃省土木工程防灾减灾重点实验室
Author(s):
QIAO Hong-xia LU Cheng-gong LI Yu GUAN Li-juan
Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology
关键词:
混凝土现场暴露盐渍土耐久性损伤评价硫酸盐侵蚀
Keywords:
concrete field exposure saline soil durability damage assessment sulfate erosion
分类号:
-
DOI:
-
文献标志码:
A
摘要:
以掺有不同粉煤灰量的混凝土试件为研究对象,将3种配合比的混凝土试件暴露在具有典型盐渍土特征的宁夏地区,选取相对质量和相对动弹性模量作为评价参数,通过比较分析得出一种更加适合盐渍土地区现场暴露混凝土耐久性损伤的综合评价参数。同时结合现场暴露混凝土微观分析对盐渍土地区混凝土受硫酸盐侵蚀的劣化机理进行了研究,从微观角度分析了盐渍土地区混凝土耐久性能变化的原因。结果表明:混凝土在盐渍土地区受到复杂的化学侵蚀,与土壤中的硫酸盐反应生成了硫铝酸钙晶体填充在孔隙中,综合损伤评价参数能很好地描述盐渍土地区混凝土的耐久性。
Abstract:
The concrete specimens with different amounts of fly ash were taken as research object. The concrete specimens of three kinds of mix ratio were exposed to saline soil with typical characteristics in Ningxia area. The relative mass and relative dynamic elastic modulus were selected as evaluation parameters. Through the comparative analysis, the more suitable comprehensive damage assessment parameters of durability evaluation of the concrete field exposed in the saline area were obtained. At the same time, the degradation mechanism of concrete under sulfate erosion in saline soil was studied combining with microcosmic analysis of field exposed concrete. The reasons for the durability change of concrete in saline soil area were analyzed from micro perspective. The results show that the concrete is subjected to complex chemical erosion in the saline soil area, and react with sulfate in soil to form calcium sulphoaluminate crystals which is filled in the pore. The durability of concrete in saline soil area can be well described by the comprehensive damage assessment parameters.

参考文献/References:

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(06):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(06):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(06):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(06):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(06):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(06):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(06):107.
[8]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(06):81.
[9]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(06):54.
[10]付兵,李建波,林皋,等.基于真实骨料形状库的混凝土细观数值模型[J].建筑科学与工程学报,2010,27(02):10.
 FU Bing,LI Jian-bo,LIN Gao,et al.Mesoscopic Numerical Model of Concrete Based on Data Base of Real Aggregate Shapes[J].Journal of Architecture and Civil Engineering,2010,27(06):10.

备注/Memo

备注/Memo:
更新日期/Last Update: 2016-12-07