Full Scale Processing Investigation for ECC Pre-cast Structural Element

Abstract

ECC is a pseudo-strain-hardening, highly ductile cementitious composite. However, the major studies on this material have been limited to laboratory scale without experience in full-scale plants. Thus, practical applications of ECC have not been previously investigated. In the current study, full-scale processing experiments were executed, and mechanical and fresh properties were tested, where emphasis was placed on two types of tensile test. It was thus proven that ECC can provide excellent fresh and mechanical properties in full scale production, and a statistical basis for determining tensile property specifications was provided. Furthermore, it was found that flexural tests can be utilized for inspecting tensile properties in daily production. These experimental data were reflected in an actual building construction project that was designed to utilize ECC structural elements. As a result, ECC element production was successfully achieved with the required quality in this project.

Smeared-crack Modeling of R/ECC Membranes Incorporating an Explicit Shear Transfer Model

“…The direct tensile tests were conduced on a dumbbell type specimen with 30×13 mm 2 testing section. Details of a similar tensile test can be found in Kanda et al (2006), described as the TC type test. As can be observed from Fig.…”

Simulation of Scattering of Bending Characteristics of FRCC Based on Bridging Law Considering Fiber Distribution

“…Water glass has high viscosity, and it is colorless and transparent. In regards to the practical use of SHCC, the rheology of mortar matrix before mixing the fiber was inspected using the flow time using the funnel (Kanda, et al 2006). The flow time of water glass was controlled by adding pure water in an effort to attain the same flow time of mortar matrix as that of the target SHCC.…”

A Virtual Platform to Determine the Tensile Properties of Engineered Cementitious Composite

“…The most distinctive engineering property of ECC is its strain hardening ability -the ability of the composite to stretch and not fracture under tensile loading, resembling the behaviour of a ductile metal. This is attributed to its ability to form multiple micro-cracks of small widths (typically <0.1 mm) [2][3], rather than a single macro-crack as in ordinary and other types of fibre reinforced concrete [4].…”

“…From the practical point of view, Kanda and coworkers [2,9] noted the importance of a technically simple test method as part of routine quality control testing to ensure that the tensile properties of ECC in large scale productions are essentially the same as the properties obtained in the pre-qualification stage.…”