|Table of Contents|

Fatigue Strength Prediction of Recycled Aggregate ConcreteBased on Static Strength Distribution(PDF)

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

Issue:
2010年04期
Page:
7-13
Research Field:
Publishing date:
2010-12-20

Info

Title:
Fatigue Strength Prediction of Recycled Aggregate ConcreteBased on Static Strength Distribution
Author(s):
XIAO Jian-zhuang1 LI Hong1 QI Meng2
1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. Anhui Province Chemical Industry Design Institute, Hefei 230009, Anhui, China
Keywords:
recycled aggregate concrete compressive strength fatigue strength normal distribution replacement percentage stress ratio
PACS:
TU528
DOI:
-
Abstract:
Based on the test results of a large number of recycled aggregate concrete(RAC)static compressive strength completed by the Recycled Concrete Materials and Structures Research Group of Tongji University, the distribution characteristic for the static compressive strength of recycled aggregate concrete was studied and the probability distribution of the fatigue life and the expression of compressive fatigue strength were proposed. The results of Pearson χ2 goodness of fitting show that the normal distribution model can be used to describe the probability distribution characteristics of the static compressive strength of RAC. Finally, the comparative analyses for fatigue strength of RAC under different stress ratios were made by the fatigue formula considered the influence about the mean and variance of axial compressive strength caused by different replacement percentages of the recycled coarse aggregate. The results show that with the increase of recycled coarse aggregate replacement percentage, the fatigue strength of recycled concrete shows a decreasing trend. According to this approach, axial compression fatigue strength with different fatigue lives and guaranteed rates can be estimated, which provide the basis for recycled concrete pavement design.

References:

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Last Update: 2010-12-20