Freezing-thawing Resistant Recycled Concrete using Recycled Aggregate Class M
By H. Katahira, A. Koyama and H. Watanabe
Concrete Journal, Vol.51, No.2, Feb. 2013
- Synopsis
- According to the former JIS A 5022, which describes technical requirement of recycled concrete using recycled aggregate class M, the scope of application of recycled concrete using recycled aggregate class M was limited to the underground structures which are not affected by freezing-thawing action. However, JIS A 5022 was revised in 2012, so that the new test method which can evaluate the freezing and thawing resistance of recycled coarse aggregate has been introduced. The freezing and thawing resistant recycled concrete using recycled aggregate class M is specified in the revised JIS A 5022, which extends applicability of recycled concrete using recycled aggregate class M to concrete members which suffer from freezing-thawing action.
- Keywords:
- recycled aggregate, freeze-thaw resistance, test method, freezer
