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

Liu, Yushi; Zhou, Xiaoming; Lv, Chengbo; Yao, Yang; Liu, Tianan

doi:10.1155/2018/7987589

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…Therefore, the PVA fibers employed in the design mix compositions of this current study are more effective compared to PP fibers in terms of flexural performance. The findings in this study confirm that PVA fibers are better than PP fibers to be used in developing ECC that exhibit strain hardening and multiple fine cracking behaviors, and this is parallel with the evidence found in previous investigations (Huang & Zhang, 2014;Li et al, 2001;Li et al, 2004;Liu et al, 2018;Pakravan et al, 2018;Yang & Li, 2014;Yang et al, 2007).…”

Section: Comparison Of Flexural Behavior With Previous Studysupporting

confidence: 90%

Compression and Flexural Behavior of ECC Containing PVA Fiber

Lee¹,

Zain²,

Lian³

et al. 2021

JST

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Research on Engineered Cementitious Composites (ECC) is overwhelming owing to its wide structural applications that can serve multi-functional purposes in civil and nvironmental infrastructures. Compared to other high-performance fiber reinforced concrete, ECC yields superior tensile ductility and multiple cracking behaviors when subjected to tensile loadings even with low to moderate volume of fibers. This paper presents the flexural properties of ECC made of cement, an industrial by-product, such as ground granulated blast-furnace slags (GGBS), local silica sand, polyvinyl alcohol (PVA) fiber, water, and superplasticizer (SP). Two series of ECC mixtures (ECC-G50 series and ECC-G60 series) and one control mixture were designed. The effect of two different fiber contents in volume fraction was investigated for the two series of ECC mixtures. The compression and flexural tests were conducted on ECC and control specimens after 28 days of curing. A compression test revealed that almost all ECC mixtures improved compressive strength between 20% to 30% compared to the control specimens. In addition, all ECC plate specimens demonstrated excellent strain-hardening states (i.e., displacement capacity at least ten times greater than the control specimens) and multiple fine-cracks failure modes after the three-point bending test. The increase in fiber content slightly reduced the compressive strength but enhanced the flexural behavior of the ECC-G50 series. However, this observation is not discovered in the ECC-G60 series. Outcomes of this research assist material scientists on the content of PVA fiber and GGBS used in making ECC.

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Section: Comparison Of Flexural Behavior With Previous Studysupporting

confidence: 90%

Compression and Flexural Behavior of ECC Containing PVA Fiber

Lee¹,

Zain²,

Lian³

et al. 2021

JST

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“…They found that ordinary Portland cement concrete reached a mass loss rate of 5% after 45 freeze-thaw cycles, while alkali-activated concrete required 98 freeze-thaw cycles to reach the same mass loss rate. Liu et al [130] studied the effect of silica fume on the freeze-thaw resistance of alkali-activated fly ash/slag cementitious materials through experiments. The results showed that the addition of silica fume led to more damage and deterioration of the hardened samples under freeze-thaw cycles.…”

Section: Freeze-thaw Resistancementioning

confidence: 99%

A Review on Development of Industrial Solid Waste in Tunnel Grouting Materials: Feasibility, Performance, and Prospects

Jiang,

Wu,

et al. 2023

Materials

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With rapid infrastructure development worldwide, the generation of industrial solid waste (ISW) has substantially increased, causing resource wastage and environmental pollution. Meanwhile, tunnel engineering requires large quantities of grouting material for ground treatment and consolidation. Using ISW as a component in tunnel grouts provides a sustainable solution to both issues. This paper presented a comprehensive review of the recent advancements in tunnel grouting materials using ISW, focusing on their feasibility, mechanical characteristics, and future development directions. Initially, the concept and classification of ISW were introduced, examining its feasibility and advantages as grouting materials in tunnels. Subsequently, various performances of ISW in tunnel grouting materials were summarized to explore the factors influencing mechanical strength, fluidity, durability, and microstructure characteristics. Simultaneously, this review analyzed current research trends and outlines future development directions. Major challenges, including quality assurance, environmental risks, and lack of standardized specifications, are discussed. Future research directions, including multifunctional grouts, integrated waste utilization, and advanced characterization techniques, are suggested to further advance this field. These findings provided useful insights for the continued development of high-performance and environmentally friendly ISW-based grouting materials.

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“…Despite their remarkable properties, ECCs face challenges associated with their high reliance on ordinary Portland cement (OPC), leading to significant environmental and economic concerns [2]. To tackle these challenges, researchers have been exploring the use of various waste materials, such as silica fume, slag, and class C or F fly ash as partial replacements for OPC in ECCmix designs [3,4]. In addition, studies are now exploring alternative design strategies that aim to minimize or completely eliminate the need for OPC, considering its substantial contribution (6-10%) to global anthropogenic CO 2 emissions [5,6].…”

Section: Introductionmentioning

confidence: 99%

Engineered Cementitious Composites with Super-Sulfated Cement: Mechanical, Physical, and Durability Performance

Zokaei,

Siad,

Lachemi

et al. 2024

Materials

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This study aimed to bridge a research gap by exploring the utilization of super-sulphated cement (SSC) in engineered cementitious composites (ECCs) as a sustainable alternative to ordinary Portland cement (OPC)-based mixtures. The SSC was designed with slag, gypsum, and a small amount of OPC. The primary objective was to investigate the effects of incorporating SSC, both with and without fly ash (FA), at various FA/SSC ratios between 0 and 1.5. A comprehensive evaluation was conducted to assess the performance of the ECC-SSC mixtures, including the compressive and flexural strengths, ductility, ultrasonic pulse velocity, rapid chloride permeability, and drying shrinkage. Additionally, advanced microstructural evaluation techniques such as scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis as well as X-ray diffraction (XRD) analysis were employed to analyze the reaction products in selected mixtures. The results showed that the ECC mixture produced with SSC exhibited comparable strength to the ECC-OPC. In general, all the SSC-based ECCs fulfilled the criteria for various engineering applications, especially when the fly ash to SSC ratios were 0 and 0.8. In addition, ECCs with FA/SSC ratios of 1.2 and 1.5 showed ultra-ductile performance higher than the control ECC. Interestingly, all the FA-based ECC-SSC presented lower shrinkage characteristics than the control OPC-based ECC.

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

Cited by 14 publications

References 31 publications

Compression and Flexural Behavior of ECC Containing PVA Fiber

Compression and Flexural Behavior of ECC Containing PVA Fiber

A Review on Development of Industrial Solid Waste in Tunnel Grouting Materials: Feasibility, Performance, and Prospects

Engineered Cementitious Composites with Super-Sulfated Cement: Mechanical, Physical, and Durability Performance

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