On Engineered Cementitious Composites (ECC)

Li, Victor C.

doi:10.3151/jact.1.215

Cited by 1,284 publications

(227 citation statements)

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“…According to previous research on it (Rokugo et al 2007;Stang and Li 2004), UHPC exhibits less ductile behavior compared to high ductile fiber-reinforced normal strength grade cementitious composites when the same amount of fiber is incorporated. Typical UHPC contains 2 vol% of steel fibers, whereas high ductile fiber-reinforced normal strength grade cementitious composites presenting excellent tensile strain capacity of more than 2 % includes PVA (polyvinyl alcohol) or PE (polyethylene) fibers in general (Choi et al 2016a, b;Lee et al 2012;Li 2003Li , 2012. Recent research works reported that synthetic fibers could also be applied to UHPC instead of steel fibers.…”

Section: Introductionmentioning

confidence: 99%

Control of Tensile Behavior of Ultra-High Performance Concrete Through Artificial Flaws and Fiber Hybridization

Kang

Lee

Choi

et al. 2016

Int J Concr Struct Mater

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Ultra-high performance concrete (UHPC) is one of the most promising construction materials because it exhibits high performance, such as through high strength, high durability, and proper rheological properties. However, it has low tensile ductility compared with other normal strength grade high ductile fiber-reinforced cementitious composites. This paper presents an experimental study on the tensile behavior, including tensile ductility and crack patterns, of UHPC reinforced by hybrid steel and polyethylene fibers and incorporating plastic beads which have a very weak bond with a cementitious matrix. These beads behave as an artificial flaw under tensile loading. A series of experiments including density, compressive strength, and uniaxial tension tests were performed. Test results showed that the tensile behavior including tensile strain capacity and cracking pattern of UHPC investigated in this study can be controlled by fiber hybridization and artificial flaws.

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Section: Introductionmentioning

confidence: 99%

Control of Tensile Behavior of Ultra-High Performance Concrete Through Artificial Flaws and Fiber Hybridization

Kang

Lee

Choi

et al. 2016

Int J Concr Struct Mater

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“…It can retain its full bearing capacity and integrity under direct tension until the strain reaches the ultimate tensile strain. UHTCC also has good deformation compatibility with steel bars (Fischer and Li, 2002), high compressive deformability compared with normal concrete (Fischer, 2002;Xu and Cai, 2010), ductile fracture characteristics (Li and Hashida, 1993;Li and Xu, 2011), and notch insensitivity (Li, 1997;Xu and Li, Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering) ISSN 1673-565X (Print); ISSN 1862-1775 (Online) www.zju.edu.cn/jzus; www.springerlink.com E-mail: jzus@zju.edu.cn 2009). All the above excellent properties seem to render UHTCC a potentially ideal material solution for earthquake resistant structures or elements.…”

Section: Introductionmentioning

confidence: 99%

Rate dependence of ultra high toughness cementitious composite under direct tension

2016

J. Zhejiang Univ. Sci. A

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Ultra high toughness cementitious composite (UHTCC) usually shows strain hardening and multiple cracking under static tension loads. In practice, structures could be exposed to high strain rates during an earthquake. Whether UHTCC can maintain its unique properties and provide high structural performance under seismic loading rates largely determines whether it can successfully fulfil its intended function. To determine the rate dependence of UHTCC, uniaxial tensile tests with strain rates ranging from 4×10 −6 s −1 to 1×10 −1 s −1 were conducted with thin plates. The experimental results showed that UHTCC had significant strain hardening and excellent multiple cracking properties under all the rates tested. The ultimate tensile strain lay in the range of 3.7% to 4.1% and was almost immune to the change in strain rates. The rate of 1×10 −3 s −1 seemed to be a threshold for dynamic increase effects of the first crack tensile strength, elastic modulus, ultimate tensile strength, and energy absorption capability. When the strain rate was higher than the threshold, the dynamic increase effects became more pronounced. The energy absorption capability was much higher than that of concrete, and the average ultimate crack widths were controlled below 0.1 mm under all rates. Several fitting formulas were obtained based on the experimental results.

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“…For example, the popular high-early-strength Engineered Cementitious Composites (ECC) are capable of delivering a compressive strength of 21 MPa within 4 hours after placement. Moreover, the long-term tensile strain capacity of ECC members is more than 2% [Li, 2006;Wang and Li, 2006].…”

Section: Introductionmentioning

confidence: 99%

Material degradation due to moisture and temperature. Part 1: mathematical model, analysis, and analytical solutions

Mudunuru

Nakshatrala

2016

Continuum Mech. Thermodyn.

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On Engineered Cementitious Composites (ECC)

Cited by 1,284 publications

References 20 publications

Control of Tensile Behavior of Ultra-High Performance Concrete Through Artificial Flaws and Fiber Hybridization

Control of Tensile Behavior of Ultra-High Performance Concrete Through Artificial Flaws and Fiber Hybridization

Rate dependence of ultra high toughness cementitious composite under direct tension

Material degradation due to moisture and temperature. Part 1: mathematical model, analysis, and analytical solutions

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