Constitutive rheological control to develop a self-consolidating engineered cementitious composite reinforced with hydrophilic poly(vinyl alcohol) fibers

Kong, Hyun Joon; Bike, Stacy G.; Li, Victor C.

doi:10.1016/s0958-9465(02)00056-2

Cited by 85 publications

(41 citation statements)

References 9 publications

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“…A fiber content of 2% by volume was used in the mixture design. These decisions were made through ECC micromechanics material design theory and had been experimentally demonstrated to produce good ECC properties in previous investigations [17,18].…”

Section: Methodsmentioning

confidence: 99%

Improving the workability and rheological properties of Engineered Cementitious Composites using factorial experimental design

Şahmaran

Bilici

Özbay

et al. 2013

Composites Part B: Engineering

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In the development of Engineered Cementitious Composites (ECC), micromechanics-based design theory is adopted to properly select the matrix constituents, fiber, and fiber-matrix interface properties to exhibit strain hardening and multiple cracking behaviors. Despite the micromechanics design constraints, practical applications show that the workability and rheological properties of matrix can affect the fiber dispersion uniformity, which have also direct concerns on composite mechanical properties. For this reason, in this research, parameters of micromechanics-based optimized ECC mixture design, which most possibly affecting the workability and rheological properties, are investigated. An experimental program that contains 36 different ECC mixtures was undertaken to quantitatively evaluate the combined effects of the following factors on workability and rheological properties: water-binder (w/b), sand-binder (s/b), superplasticizer-binder (SP/b) ratios and maximum aggregate size (Dmax). A mini-slump cone, a Marsh cone and a rotational viscometer were used to evaluate the workability and rheological properties of ECC mixtures. Compressive strength and four point bending tests were used for mechanical characteristics of ECC mixtures at 28 days. The effects of studied parameters (w/b, s/b, SP/b and Dmax) were characterized and analyzed using regression models, which can identify the primary factors and their interactions on the measured properties. Statistically significant regression models were developed for all tested parameters as function of w/b, s/b, SP/b and Dmax. To find out the best possible ECC mixture under the range of parameters investigated for the desired workability and mechanical characteristics, a multi-objective optimization problem was defined and solved based on the developed regression models. Test results indicate that w/b, s/b and SP/b parameters affect the rheological and workability properties. On the other hand, for the range of studied aggregate sizes, Dmax is found to be statistically insignificant on the rheological and workability properties of ECC.Scientific and Technical Research Council of Turkey (MAG-108M495

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Section: Methodsmentioning

confidence: 99%

Improving the workability and rheological properties of Engineered Cementitious Composites using factorial experimental design

Şahmaran

Bilici

Özbay

et al. 2013

Composites Part B: Engineering

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“…moderately low fiber volume fraction less than 2-3%, coupled with suitable matrix design) that make it possible for very flexible materials processing. ECC can now be cast (including self-compacting casting (Kong et al 2003)), extruded (Stang and Li 1999), or sprayed (Kanda et al 2001;Kim et al 2003a). It is the deliberate constituent tailoring and optimization methodology embodied in ECC that gives its name Engineered Cementitious Composite.…”

Section: From Theoretical Materials Design To Commercial Applicationsmentioning

confidence: 99%

On Engineered Cementitious Composites (ECC)

2003

ACT

1,284

168

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This article surveys the research and development of Engineered Cementitious Composites (ECC) over the last decade since its invention in the early 1990's. The importance of micromechanics in the materials design strategy is emphasized. Observations of unique characteristics of ECC based on a broad range of theoretical and experimental research are examined. The advantageous use of ECC in certain categories of structural, and repair and retrofit applications is reviewed. While reflecting on past advances, future challenges for continued development and deployment of ECC are noted.

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“…Furthermore, the addition of micro fibers offers a favorable effect on both strain hardening and multiple cracking behavior [14,18]. These improvements lead to several practical applications for cementitious composites reported in literature including self-healing [19,20], self-consolidating [21,22], high-early-strength material [23]. On the other hand, fiber reinforced cementitious composites perform well in durability tests under cyclic loading [24,25] and freeze-thaw test [26,27].…”

Section: Introductionmentioning

confidence: 99%

High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers

Nguyen

Carvelli

Adesanya

et al. 2018

Cement and Concrete Composites

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A B S T R A C TAlkali-activated ladle slag (AALS) is a promising cementitious material with environmental benefits. However, the brittleness of material has been limiting the use in construction. Therefore, in this experimental investigation, different polypropylene (PP) fibers were employed as a short randomly reinforcement in cementitious matrix in order to improve mechanical performance of the AALS composites.The study reveals that the AALS composite could gain very high ductility with an appropriate fibrous reinforcement. Fracture energy and fracture toughness of PP fiber reinforced AALS mortars increased by approximately 150 and 7.6 times, respectively, compared to the unreinforced material. Additionally, the flexural strength of the composite increased by roughly 300%. Pseudo strain hardening (PSH) behavior was observed along with multiple cracks under uniaxial tensile test. Scanning electron microscope (SEM) images confirmed the local fiber bridging effect, which resulted in the high mechanical performance of the PP-reinforced AALS.

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Constitutive rheological control to develop a self-consolidating engineered cementitious composite reinforced with hydrophilic poly(vinyl alcohol) fibers

Cited by 85 publications

References 9 publications

Improving the workability and rheological properties of Engineered Cementitious Composites using factorial experimental design

Improving the workability and rheological properties of Engineered Cementitious Composites using factorial experimental design

On Engineered Cementitious Composites (ECC)

High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers

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