| Title |
A Properties and Durability of Recycled Aggregate Concrete |
| Authors |
Choi Hee-Bok ; Shin Yoon-Seok ; An Sung-Hoon ; Chung Heon-Soo ; Kang Kyung-In |
| Keywords |
Recycled Aggregate Concrete ; Stress-strain Relation ; Freezing-thawing ; Strain of Shrinkage ; Elastic Modulus |
| Abstract |
A part of research about durability and a research of basic about RAC had been gone. Therefore, for application to structure of RAs substantially, we grasp special quality of freezing-thawing resistivity, the stress - strain relation, shear stress - shear strain and drying shrinkage that influence directly in durability of concrete structure. The result is as following. 1) The effect of the quality and the replacement ratio of RAs that get in stress-strain curve of a RAC are very small. 2) The shear stress-strain relation of a RAC receives big effect by the grade and replacement ratio of RAs. 3) The relative dynamic elasticity modulus of RAC by increase of freezing-thawing cycle number rises as the replacement ratio of RAs increases. 4) The freezing-thawing resistance of RAC receives bigger effect by proper interior air content and concrete moisture content than the replacement ratio of RAs. 5) The weight change ratio by freezing-thawing cycle is high as the replacement ratio of RAs increases. Specially, weight decrement by freezing-thawing is very high in used the RG than RS. |