全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

界面裂纹扩展与分叉对ECC-混凝土叠层修补体系的影响

, PP. 44-50

Keywords: 道路工程,工程水泥基复合材料,试验研究,叠层修补,界面裂纹,扩展与分叉,捕获机理

Full-Text   Cite this paper   Add to My Lib

Abstract:

?采用超强韧性聚丙烯、聚乙烯醇纤维混凝土进行叠层修补体系的理论分析和试验研究。利用材料的韧性及断裂力学中能量释放率的关系对界面裂纹扩展与分叉的发生准则进行解释,描述在工程水泥基复合材料(ECC)修补试验中观察到的界面裂纹扩展和分叉裂纹的独有捕获过程及其产生机理。结果表明:超强韧性纤维混凝土叠层修补体系的承载能力和延性相对于传统混凝土修补体系有明显改善;不同于传统的脱层失效模式或剥落失效模式,当超强韧性聚丙烯纤维混凝土作为叠层修补材料时会产生独特的多重裂纹破坏模式,该特征使其成为路面工程所需要的具有优良耐久性的理想修补材料。

References

[1]  俞家欢.工程水泥基复合材料的性能及应用[M].北
[2]  京:中国建筑工业出版社,2010.
[3]  YU Jia-huan.Property and Applications of Engineered Cementitious Composites[M].Beijing:China Architecture & Building Press,2010.
[4]  STANDER H.Interfacial Bond Properties for ECC Overlay System[D].Cape Town:University of Stellenbosch,2007.
[5]  YU J H,CHEN W,YU M X,et al.The Microstructure of Self-healed PVA ECC Under Wet and Dry Cycles[J].Materials Research,2010,13(2):225-231.
[6]  YANG E H.Designing Added Functions in Engineered Cementitious Composites[D].Ann Arbor:University of Michigan,2008.
[7]  ANNA V B.Self-healing Concrete[J].Forbes,2009(2):46-47.
[8]  FISCHER G,LI V C.Effect of Matrix Ductility on Deformation Behavior of Steel-reinforced ECC Flexural Members Under Reversed Cyclic Loading Conditions[J].ACI Structural Journal,2002,99(6):781-790.
[9]  YANG E H,LI V C.Strain-hardening Fiber Cement Optimization and Component Tailoring by Means of a Micromechanical Model[J].Construction and Building Materials,2010,24(2):130-139.
[10]  NISHIOKA T,ZHOU Z D,YU J H.Analysis of In-plane Transonically Propagating Interface Crack with a Finite Contact Zone[J].International Journal of Fracture,2006,42(2):241-254.
[11]  SUO Z,HUTCHINSON J W.Interface Crack Between Two Elastic Layers[J].International Journal of Fracture,1990,43(1):1-18.
[12]  俞家欢,徐 棚,赵同峰,等.超强韧性纤维混凝土的叠层修补试验研究[J].东南大学学报:自然科学版,2010,40(增2):220-223.
[13]  YU Jia-huan,XU Peng,ZHAO Tong-feng,et al.Research on Repair Overlay System of Ultra-ductile Fiber Reinforced Concrete[J].Journal of Southeast University:Natural Science Edition,2010,40(S2):220-223.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133