Study on Viscous Characteristic and Index for Construction Control of High Quality Shotcrete

Abstract

High quality shotcrete (HQSC) is a new type of shotcrete utilizing own viscosity generated by a mixed powder for the improvement in a construction performance on the tunnel site. Although the viscosity which is the feature of HQSC has been evaluated qualitatively, the quantitative evaluation and the test method to control the viscosity on a construction site has been insufficient. This paper describes the test result of the viscous characteristics, and proposes the index for construction control of HQSC on site.