[1]关宇刚,孙伟,缪昌文.冻融疲劳作用下高强混凝土劣化特征点的分析[J].东南大学学报(自然科学版),2001,31(6):25-29.[doi:10.3969/j.issn.1001-0505.2001.06.007]
　Guan Yugang,Sun Wei,Miao Changwen.Analysis of the Characteristic Degradation Points for High Strength Concrete Subjected to Freeze-Thaw Cycles[J].Journal of Southeast University (Natural Science Edition),2001,31(6):25-29.[doi:10.3969/j.issn.1001-0505.2001.06.007]
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冻融疲劳作用下高强混凝土劣化特征点的分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第6期
页码:
25-29
栏目:
材料科学与工程
出版日期:
2001-11-20

文章信息/Info

Title:
Analysis of the Characteristic Degradation Points for High Strength Concrete Subjected to Freeze-Thaw Cycles
作者:
关宇刚1;  孙伟1;  缪昌文2
1 东南大学材料科学与工程系,南京 210096; 2 江苏省建筑科学研究院,南京 210008
Author(s):
Guan Yugang1;  Sun Wei1;  Miao Changwen2
1 Department of Materials and Engineering, Southeast University, Nanjing 210096, China; 2 Institute of Architectural Science of Jiangsu, Nanjing 210008, China)
关键词:
劣化;  寿命;  混凝土;  冻融试验
Keywords:
degradation;  life;  concrete;  freeze-thaw experiment
分类号:
TU528.31
DOI:
10.3969/j.issn.1001-0505.2001.06.007
摘要:
为了提供一定的高强混凝土抗冻性定量化设计评估标准,本文定义了初劣点与陡劣点,并且为了确定这些点分别提出了P值检验法、拟合曲率法; 同时展开了高强混凝土的冻融试验; 在试验的基础上,分析了高强混凝土的初劣点与陡劣点以及它们的规律.结果表明通过初劣点、陡劣点、最大曲率三指标能够比较全面地反映高强混凝土的抗冻性能; 高强混凝土的初劣点值与陡劣点值呈线性关系.
Abstract:
In order to offer certain standards for quantitative design about frost resistance of the high-strength concrete, the initial-degenerate point and the sharp-degenerate point were defined in this paper, and P-value test method and regression-curvature method were provided to determine these points respectively. Furthermore, based on freeze-thaw experiments for the high-strength concrete, attempts are made to analyze the initial-degenerate point and the sharp-degenerate point as well as their regularities. It is concluded that frost resistance of the high strength concrete can be reflected roundly through the three parameters, i.e. the initial-degenerate point, the sharp-degenerate point and the maximum curvature, and the relationship between initial-degenerate point and sharp-degenerate point is linear.

参考文献/References:

[1] Rostam S.Service life design — the European approach.Concrete International,1993,15(7):24～32
[2] Sun W,Zhang Y M.Damage and damage resistance of high strength concrete under the action of load and freezing-thawing cycles.Cement and Concrete Research,1999,29(6):1519～1523
[3] 曹建国,李金玉,林莉.高强混凝土抗冻性的研究.建筑材料学报,1999,2(4):292～297
[4] 余寿文,冯西桥.损伤力学.北京:清华大学出版社,1997.57～58
[5] Stefan J,Hans C G.High strength concrete freeze-thaw testing and cracking.Cement and Concrete Research,1995,25(8):1775～1780

备注/Memo

备注/Memo:
作者简介:关宇刚,男,1974年生,博士研究生.
基金项目:国家自然科学基金重点资助项目(59938170).
更新日期/Last Update: 2001-11-20