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http://dx.doi.org/10.7234/kscm.2007.20.2.021

Design and Constructibility of an Engineered Cementitious Composite Produced with Cement-based Mortar Matrix and Synthetic Fibers  

Kim, Yun-Yong (충남대학교 토목공학과)
Publication Information
Composites Research / v.20, no.2, 2007 , pp. 21-26 More about this Journal
Abstract
This paper summarizes the design procedure and constructibility of an ECC (Engineered Cementitious Composite), which is a synthetic fiber-reinforced composite produced with the Portland cement-based mortar matrix. This study employs a stepwise method to develop useful ECC in construction field, which possesses different fluid properties to facilitate diverse types of processing (i.e., self-consolidating or spray processing). To control the rheological properties of the composite, the aggregates and reinforcing fibers were initially selected based on micromechanical analysis and steady-state cracking theory. The stability and consequent viscosity of the suspensions were then mediated by optimizing the dosage of the chemical and mineral admixtures. The rheological properties altered through this approach were revealed to be effective in obtaining ECC-hardened properties, represented by pseudo strain-hardening behavior in uniaxial tension, allowing the readily achievement of the desired function of the fresh ECC.
Keywords
ECC(Engineered Cementitious Composite); Synthetic Fiber; Mortar Matrix; Tensile Strain Hardening; Constructibility;
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