APPLICATION OF FRACTURE MECHANICS TO ASSESS THE CONCRETE DAMAGE DUE TO CYCLIC FREEZING AND THAWING

被引：0
|
作者：
Kosior-Kazberuk, Marta [1 ]
机构：
[1] Bialystok Tech Univ, Fac Civil & Environm Engn, Wiejska Str 45E, PL-15351 Bialystok, Poland
来源：
11TH WORLD CONGRESS ON COMPUTATIONAL MECHANICS; 5TH EUROPEAN CONFERENCE ON COMPUTATIONAL MECHANICS; 6TH EUROPEAN CONFERENCE ON COMPUTATIONAL FLUID DYNAMICS, VOLS V - VI | 2014年
关键词：
Fracture Mechanics; Concrete; Internal Damage; Experimental Investigation; Validation; ENERGY; MODEL;
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The analysis and modelling of concrete behaviour is complex because of its heterogeneous microstructure. The models based on fracture parameters need the experimental validation. The paper deals with the effect of internal frost damage on fracture mechanics parameters: critical stress intensity factor K-Ic and critical value of crack tip opening displacement CTODc. The fracture parameters were assessed on beams with initial notches in three-point bend test, after freeze-thaw cycles. The significant changes in the P-CMOD plot for specimens after different number of freeze-thaw cycles were observed. The results obtained allowed analyzing the variations in the fracture characteristics due to environmental influence. The analysis of results revealed the applicability of fracture mechanics methods for studying the process of freeze-thaw damage accumulation in concrete. Thus, they may be used for prediction of concrete structure durability.
引用
收藏
页码：6727 / 6737
页数：11
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