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http://dx.doi.org/10.11112/jksmi.2012.16.1.055

Strain-Hardening Cementitious Composites with Low Viscosity Suitable for Grouting Application  

Lee, Bang Yeon (전남대학교 건축학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.1, 2012 , pp. 55-63 More about this Journal
Abstract
This paper presents materials and processing technique to manufacture low viscous strain-hardening cementitious composite which is suitable for structures requiring low viscosity of materials. The micromechanics and fracture mechanics tools coupled with processing techniques were adopted to achieve low viscosity of composites as well as high tensile strain capacity. Optimal volume and length of fibers and interfacial properties between fibers and matrix for composites with tensile strength of 2~3MPa were determined on the basis of the micromechanical analysis and the steady-state cracking theory. Then six mixtures were determined and the experiment was carried out to evaluate the viscosity and uniaxial tensile performance of those. From the test results, it is verified that the strain-hardening cementitious composite with low viscosity suitable for grouting applications in fresh state as well as high ductility over 1.5% in hardened state can be feasible.
Keywords
Grouting; Fiber; Uniaxial tension behavior; Strain-hardening cementitious composite;
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