|Table of Contents|

Influence of Recycled Aggregate Replacement Ratio on Durability of Recycled Aggregate Concrete(PDF)

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

Issue:
2012年01期
Page:
56-62
Research Field:
Publishing date:

Info

Title:
Influence of Recycled Aggregate Replacement Ratio on Durability of Recycled Aggregate Concrete
Author(s):
YING Jing-wei1;  XIAO Jian-zhuang1; 2
1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 200092, China
Keywords:
recycled aggregate replacement ratio;  recycled aggregate concrete;  durability;  chloride ion;  frost resistance;  abrasive resistance;  carbonation
PACS:
TU528.79
DOI:
-
Abstract:
Based on the intensive reference investigations, authors reviewed the research achievements on recycled aggregate concrete(RAC)durability in the past 11 years at home and abroad, which including chloride ion permeability, frost resistance, abrasive resistance, and carbonation resistance. Through the gray correlation quantitative analysis, the primary and secondary relations of various factors influencing the chloride ion permeability of RAC were studied. Results show that the chloride ion permeability, frost resistance and abrasive resistance of RAC become worse with the increasing of recycled coarse aggregate replacement ratio. The abrasive resistance of concrete becomes better with the increasing of recycled fine aggregate replacement ratio. However, the carbonization resistance of most concrete become better with the increasing of recycled coarse aggregate replacement ratio, a little of which appear deviation; according to the importance of the influence on the chloride ion permeability of RAC based on gray correlation analysis, the influencing sequence of the impact factors is: water cement ratio, admixture, concrete curing age.

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Memo

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Last Update: 2012-03-20