登录
注册
E-alert
登录
注册
E-alert
DURABILITY AND SERVICE LIFE PREDICTION MODEL FOR FREEZING AND THAWING CYCLE OF HIGH STRENGTH CONCRETE
-
摘要: 在分析总结国内外高强混凝土抗冻性基本理论的基础上,结合试验结果对高强混凝土冻融循环寿命预测模型进行了比较研究,提出了基于冻融累积损伤的幂函数模型,认为冻融累积损伤的数学模型明显优于传统的动弹性模量衰减模型,同时应用累积损伤幂函数模型量化评估了非引气条件下掺加纳米粉体和缓凝剂对高强混凝土冻融循环使用寿命的影响。Abstract: Research work into freeze resista nce theory and service life prediction model for freezing and thawing cycle of h igh strength concrete are summarized and the corresponding research aimed to est ablish a new mathematics model of freeze-thaw durability for service life predi ct ion based on experimental results has been done.Two new mathematics models based on freeze-thaw cumulation damage theory are put forward and it is revealed tha t the new mathematical model especially the power function one is superior to th e traditional attenuation model of relative dynamic elasticity module of concret e in precision according to the freeze-thaw cycle test data.The quantitative an alysis on the influence of nano SiO-2(3%)and super retarder(0.3%)to service li fe of freeze-thaw cycle of high strength concrete is provided by using this mod el.
-
[2] 徐定华,徐敏.混凝土材料学概论.北京:中国标准出版社,2002 黄士元,蒋家奋,杨南如,等.近代混凝土技术.西安:陕西科技出版社,1998 [3] Fagerlund G.The Critical Degree of Saturation Method of Assessing th e Freeze/Thaw Durability of Concrete.Materials and Structure,1977(10) [4] 金建华,聊欣.混凝土抗冻性评定新方法.混凝土与水泥制品,1986(6) [5] Chatterji S.On the Applicability of Ficks Second Law to Chloride I o n Migration Through Portland Cement Concrete.Cement and Concrete Research,1995,2 5(2):299～303 [6] 潘钢华,孙伟.高强混凝土抗冻性的理论和实验研究.硅酸盐学报,1999(6) [7] 黄孝蘅.高性能混凝土的抗冻性.中国港湾建设,2002(5) [8] 田倩.高强混凝土与钢纤维高强混凝土耐久性及机理的研究:[硕士学位论文].南京:东南大学,1997 [9] 马立国.高耐久混凝土的配制及性能研究:[硕士学位论文].大连:大连理工大学,2003 [10] 李金玉,等.混凝土抗冻性的定量化设计.混凝土,2000(9) [11] 刘崇熙,汪在芹.坝工混凝土耐久寿命的衰变规律.长江科学院院报,2000(2) [12] 关宇刚.单一和多重破坏因素下高强混凝土的寿命评估:[博士学位论文].南京:东南大学,2002 [13] 曹建国,李金玉,等.高强混凝土抗冻性的研究.建筑材料学报,1999(4) [14] 赵霄龙,等.混凝土冻融耐久性劣化的评价指标对比.华中科技大学学报,2003(2) [15] 彭涛,李金玉,曹建国.十三陵蓄能电站上水库面板质量检测和抗冻性评估.水力发电 ,2003(1) -
点击查看大图
计量
- 文章访问数: 104
- HTML全文浏览量: 13
- PDF下载量: 121
- 被引次数: 0
下载:
