SHOTCRETE AND AQUEDUCT TUNNEL

摘要

PROBLEM TO BE SOLVED: To enhance durability of shotcrete of high strength.SOLUTION: The present invention relates to shotcrete obtained by mixing a quick setting agent with base concrete including cement, fly ash, and aggregate comprising fine aggregate and coarse aggregate, the base concrete having a water cement ratio of 35-45%, a fine aggregate rate of 45-60%, and an air amount of 6-10%. Then the amount of the fly ash is 10-20% of the amount of the cement.