Expansion Behavior of Alkali Silica Reaction of Siliceous Sedimentary Rock and Examination of New Restraint Measures
By E. Iwatsuki
Concrete Journal Vol.49, No.10, Oct. 2011
- Synopsis
- This report arranged the result of the survey of the deteriorated structure by the alkali silica reaction of the siliceous sedimentary rock distributed in the Chubu region. In addition, the expansion behavior was experimentally examined by the test piece, and the feature of the alkali silica reaction of the siliceous sedimentary rock was arranged. Moreover, a new control method that added a small amount of chemical was examined. In the result, the alkali silica reaction of Aichi Prefecture in the Chubu region was a reaction of chert and siliceous slate of the siliceous sedimentary rock. And, it has been understood that the alkali silica reaction of the chert and siliceous slate continues for a long term. The restraint effect was obtained as a new restraint method by an easy method of adding a small amount of chemical.
- Keywords:
- alkali-silica reaction, siliceous sedimentary rock, chert, siliceous slate, calcium propionate, lithium carbonate
