Practical Measurement for Steel Fiber Distribution of the SFRC Beams

Abstract

This paper introduces practical measurement of steel fiber distribution in steel fiber reinforced concrete (SFRC) which serves as the matrix of prestressed SFRC beams. Using digital image processing in mesos-copical mechanism of SFRC, “the Dynamic System of Measuring Steel Fiber Distribution” is developed. Compared with theoretical analysis, the system is practical and valid, and a new method is provided for guiding production technology of SFRC and controlling constructional quality.

The Evaluation of the Content of Fibers in Steel Fiber Reinforced Structures and Image Analysis

“…It is one typical destructive measurement and needs a long time for preparing samples (Wang et al 2017;. As a non-destructive, efficient and high-resolution method, X-ray CT imaging technology is an applicable method for investigating the internal microstructure of cement concrete with three-dimensional "3D" view (Henry et al 2014;Wang et al 2018;Liu et al 2013;Balázs et al 2017;Kim et al 2012;Wong, Chau 2005;Komárková 2016;Yang et al 2013;Mishurova et al 2018). As an alternative the magnetic method is being developed by Italian (Ferrara et al 2012) and Spanish (The fib Model Code... 2013) research groups as well as another (Nunes et al 2016(Nunes et al , 2017.…”