An influence of pozzolanic materials with hybrid fibers on structural performance of concrete: A review

Swathi, Vennam; Asadi, S.S.

doi:10.1016/j.matpr.2020.11.260

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…Pozzolana has two types which are artificial and natural pozzolana (NP) [21,23,24]; artificial pozzolanas are mainly from the combustion of the furnace, and the utilization of waste that can be decomposed into ash which contains reactive silica such as fly ash, rice husk ash, and silica fume. Whereas, NPs are from the natural sedimentation of volcanic ash or lava that involves active silica, used as cementitious materials when combined with free lime [23,25,26]. Also, NP is categorized into two; NP from natural rocks that require grinding other than calcinations such as volcanic ash and pumice.…”

Section: Introductionmentioning

confidence: 99%

Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

Fode,

Jande,

Kivevele

2024

Advances in Civil Engineering

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Construction industries are rapidly growing, sacking high amounts of concrete which has a highly dense microstructure with excellent mechanical properties, more durable, and highly eco-friendly materials. Hence, many of the researchers are interested in solving this problem with replacing concrete by natural pozzolana (NP) which is a supplementary cementitious material mostly from volcanic sources having much active silica content that can improve the durability and mechanical properties of concrete. However, it is not well-known which common optimum replacement range can give the most desirable concrete properties. So, the present study sought to review the effects of replacing NP from volcanic sources on the durability, physical, mechanical, and microstructural properties of concrete, also, to identify the most common dose of a positive effect as a replacement in concrete. The review shows that many of NP used by different literature from different places satisfy ASTM replacement standard in concrete, especially, based on its chemical compositions. Also, the review observed that employing NP in concrete significantly improves concrete workability, lengthens setting time, and reduces bulk density, porosity, water absorption, and chloride ion migration by making denser concrete microstructure. In general, adding 5%–20% of NP in concrete significantly improves compressive strength, split tensile strength, and flexural strength. Specifically, most of the studies found 15% replacement of NP having volcanic sources can give optimum strength. Besides these, most of the studies indicated that the improvement of the strength was more visible at the concrete age of 7–28 days.

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Section: Introductionmentioning

confidence: 99%

Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

Fode,

Jande,

Kivevele

2024

Advances in Civil Engineering

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“…As a result, there is an increased capacity for energy absorption and a reduction in the propagation and expansion of the existing cracks [8,9]. Fibers are traditionally reinforced materials, with a history of serving various practical purposes [1,10,11]. These fibers comprise both natural and synthetic types.…”

Section: Introductionmentioning

confidence: 99%

Examining Mechanical Property Differences in Concrete with Natural and Synthetic Fiber Additives

Edris,

Elbialy,

El-Zohairy

et al. 2024

J. Compos. Sci.

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The rapid growth of Natural Fiber Laminate (NFL) innovation is a direct response to environmental challenges, positioning these materials as superior alternatives to synthetic fiber composites. This paper delved into the outcomes of an extensive experimental study investigating the influence of sisal fiber (SLF), banana fiber (BF), and glass fiber (GF) on the mechanical and microstructural characteristics of concrete. The water absorption curves were established for sisal fiber concrete (SLFC), banana fiber concrete (BFC), and glass fiber concrete (GFC). Furthermore, Scanning Electron Microscope (SEM) observations were conducted to perform microanalysis and failure analysis of the tested specimens. The results revealed significant improvements in the concrete containing fibers compared to its counterpart in fiber-free concrete. For mixtures with a water-to-binder (W/B) ratio of 0.3, the most optimal mix (GF-30-135) showed improvements in compressive strength, flexural strength, and splitting tensile strengths by 4.13%, 8.93%, and 10.10%, respectively. On the other hand, for W/B of 0.4, mix GF-30-135 showed improvements of 5.05%, 8.55%, and 11.60%, respectively. Furthermore, as the fiber content increased, microscopic analyses revealed a weakening of the bond between the fibers and the rest of the matrix, contributing to the deterioration of the mechanical properties.

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“…Most of these materials contain high amounts of silica and/or alumina which allow them to be used as pozzolanic additions in commercial Portland cement. The hydrated phases that are formed during the pozzolanic reaction can greatly improve the performance of concrete [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Comparison of Binary Mix of Agro-Industrial Pozzolanic Additions for Elaborating Ternary Cements: Kinetic Parameters

et al. 2021

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In this research work, the quantitative characterization of a binary blend comprised of two pozzolans (sugar cane straw (SCSA)–sugar cane bagasse ashes (SCBA), bamboo leaf ash (BLAsh)–SCBA and paper sludge (PS)–fly ash (FA)) taking into account the calculated values of the kinetic parameters of the reaction in the pozzolan/calcium hydroxide system is shown. The paper shows the most significant and important results obtained by the authors in the quantitative assessment (calculation of kinetic parameters) of the pozzolanic reaction of different mixtures of pozzolanic materials that are residues from agriculture or industrial processes. This allows a direct and rigorous comparison of the pozzolanic activity of the binary combinations of materials. The values of the kinetic parameters (reaction rate constant or activation free energy) constitute a very precise quantitative index of the pozzolanic activity of the binary combinations of materials, which is very useful for its employment in the elaboration of ternary cements. This paper shows that the binary blends 1SCBA60Blash40, 1SCBA50Blash50, 1SCBA70Blash30 have a very high pozzolanic reactivity followed by PSLSFA, 2SCBA50SCSA50, PSISFA and SCWI.

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An influence of pozzolanic materials with hybrid fibers on structural performance of concrete: A review

Cited by 6 publications

References 11 publications

Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

Examining Mechanical Property Differences in Concrete with Natural and Synthetic Fiber Additives

Quantitative Comparison of Binary Mix of Agro-Industrial Pozzolanic Additions for Elaborating Ternary Cements: Kinetic Parameters

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