Utilization and selection of proper fly ash in cost effective green HTPP-ECC design

Tosun-Felekoğlu, Kamile; Gödek, Eren; Keskinateş, Muhammer; Felekoğlu, Burak

doi:10.1016/j.jclepro.2017.02.117

Cited by 59 publications

(16 citation statements)

References 18 publications

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“…According to global sustainable development, green high-performance cementitious (GHPC) material is developed in the past years [1][2][3]. Using different mineral admixtures to partially replace cement is important [4][5][6] because it potentially reduces the pollution of industrial by-products and greenhouse gases [7]. e engineered cementitious composite (ECC) possesses high ductility and toughness under the shear and tension loading.…”

Section: Introductionmentioning

confidence: 99%

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Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High‐Volume Fly Ash

Liu

Zhou

et al. 2018

Advances in Civil Engineering

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Fly ash (FA) has been an important ingredient for engineered cementitious composite (ECC) with excellent tensile strain capacity and multiple cracking. Unfortunately, the frost resistance of ECC with high-volume FA has always been a problem. is paper discusses the influence of silica fume (SF) and ground-granulated blast-furnace slag (GGBS) on the frost resistance of ECC with high volume of FA. Four ECC mixtures, ECC (50% FA), ECC (70% FA), ECC (30% FA + 40% SL), and ECC (65% FA + 5% SF), are evaluated by freezing-thawing cycles up to 200 cycles in tap water and sodium chloride solution. e result shows the relative dynamic elastic modulus and mass loss of ECC in sodium chloride solution by freeze-thaw cycles are larger than those in tap water by freeze-thaw cycles. Moreover, the relative dynamic elastic modulus and mass loss of ECC by freeze-thaw cycles increase with FA content increasing. However, the ECC (30% FA + 40% SL) shows a lower relative dynamic elastic modulus and mass loss, but its deflection upon four-point bending test is relatively smaller before and after freeze-thaw cycles. By contrast, the ECC (65% FA + 5% SF) exhibits a significant deflection increase with higher first cracking load, and the toughness increases sharply after freezethaw cycles, meaning ECC has good toughness property.

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Section: Introductionmentioning

confidence: 99%

“…ough the strength of ECC decreases with the addition of FA, the ductility and toughness are greatly improved. Moreover, hydration heat and cost are reduced because of FA replacing cement partially [5,16].…”

Section: Introductionmentioning

confidence: 99%

Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High‐Volume Fly Ash

Liu

Zhou

et al. 2018

Advances in Civil Engineering

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“…Strain hardening could be induced as the distinctive characteristic of ECC to encourage distributed energy dissipation across the volume of structural systems. Another important component adopted in the ECC mixture is the fly ash (partial substitution of cement), with the purpose of economizing resource and enhancing the mechanical performance of ECC [11,12,13]. The mode in which fly ash affects the ECC could be explained as the modification of porosity characteristics and the interface with aggregates brought about by this type of mineral admixture.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Failure Behavior of Engineered Cementitious Composites under Freeze-Thaw Cycles

et al. 2019

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This paper investigates the freeze-thaw performance of engineered cementitious composites (ECC) reinforced with polyvinyl alcohol (PVA) fibers, by applying an innovative criterion for judging the specimen’s working state mutation. The ECC materials are prepared into 25 mixtures using the Taguchi method. Then, the fundamental transverse frequency, the flexural performance and the internal strain variation of ECC specimens subjected to freeze-thaw cycles are measured. Unlike the existing studies, this investigation focuses on the failure behavior of ECC materials in the process of freeze-thaw. The Mann-Kendall (M-K) criterion is introduced to detect the ECC specimen’s working state leap feature, leading to the updated definition of frost-induced failure concept. Furthermore, the three-level model for evaluating the freeze-thaw performance of ECC materials is established according to the revealed essential leap feature. Thus, the effect of each individual mix design factor on the frost-induced failure indices is perceived from the signal-to-noise (S/N) ratio analysis and the analysis of variance (ANOVA). Finally, a mix formulation estimated based on Taguchi method is recommended for its optimum resistance against frost-induced failure, which is verified by the confirmation experiment.

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“…Micromechanical analysis shows that the elimination of coarse aggregates produces a high cement content (2–3 times higher than that in ordinary concrete), and the large quantities of fine sand used in the matrix increase the cost of ECC. Therefore, the replacement of cement with fly ash and expanding the use of local ingredients are adopted for ECC design [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

Zhang

Yin

et al. 2018

Materials

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Herein, the mechanical properties and carbonation durability of engineered cementitious composites (ECC) were studied. For the cost-efficient utilization of ECC materials, different types of specimens were cast with polypropylene (PP) and hydrophilic polyvinyl alcohol (HPVA) fibers. The compressive strength, Poisson’s ratio, strength-deflection curves, cracking/post-cracking strength, impact index, and tensile strain-stress curves of two types of ECC materials, with differing fiber contents of 0 vol %, 1 vol %, 1.5 vol %, and 2 vol %, were investigated with the use of compressive tests, four-point bending tests, drop-weight tests, and uniaxial tensile tests. In addition, the matrix microstructure and failure morphology of the fiber in the ECC materials were studied by scanning electron microscopy (SEM) analysis. Furthermore, carbonation tests and characterization of steel corrosion after carbonization were employed to study durability resistance. The results indicated that for both PP fiber- and HPVA fiber-reinforced ECCs, the compressive strength first increases and then decreases as fiber content increases from 0 vol % to 2 vol %, reaching a maximum at 1 vol % fiber content. The bending strength, deformation capacity, and impact resistance show significant improvement with increasing fiber content. The ECC material reinforced with 2 vol % PP fiber shows superior carbonized durability with a maximum carbonation depth of only 0.8 mm.

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Utilization and selection of proper fly ash in cost effective green HTPP-ECC design

Cited by 59 publications

References 18 publications

Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High‐Volume Fly Ash

Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High‐Volume Fly Ash

Investigation on the Failure Behavior of Engineered Cementitious Composites under Freeze-Thaw Cycles

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

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