Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Gupta, Nakul; Saxena, Kuldeep K.

doi:10.3390/jcs5090237

Cited by 31 publications

(10 citation statements)

References 30 publications

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“…A mix incorporating 10% SCBA showed the highest tensile strength value, which was 10% higher than the control mix, whereas mixes containing 20%, 30%, and 40% SCBA showed 3.9 %, 11 %, and 35 %, respectively, lower than the control mix. A similar decrease in splitting tensile strength was observed as SCBA percentage increased, as reported by Shafiq et al [44] and Gupta et al [19], which followed the same trend as for compressive strength. The test results for 28-day flexural strength are shown in Figure 10.…”

Section: Split Tensile Strengthsupporting

confidence: 86%

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Mechanical Properties of Eco-friendly Concrete Made with Sugarcane Bagasse Ash

Abdalla

Koteng²,

Shitote³

et al. 2022

Civ Eng J

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Modern concretes lay emphasis on high strength in order to reduce structural member sizes to reduce materials used; high early strength to promote fast construction; high durability to reduce maintenance costs; and the incorporation of industrial and agricultural wastes to reduce environmental degradation. The incorporation of industrial and agricultural wastes into concrete as cement replacement materials reduces the amount of cement used in the production of concrete and the CO2emissions arising from cement production. Sugarcane bagasse is a waste product from the extraction of juice from sugar cane. It is estimated that 1.7 million tons of bagasse are produced worldwide every year. Much of the bagasse is used as boiler fuel and to produce electricity, and the ash is dumped in earth fills, resulting in critical environmental pollution that requires immediate attention. Available literature shows that when burned under controlled conditions, a pozzolanic ash of high silica content can be obtained, which can be used in concrete production with several advantages. This study investigates the mechanical properties of concrete designed for high strength and incorporating processed sugarcane bagasse ash in amounts of 10–40% by weight of cement in a binary combination with silica fume. Concrete workability in the fresh state and compressive, flexural, and tensile strengths in the hardened state are investigated. Water absorption of hardened concrete is also investigated as an indicator of potential durability. The results show that the mix containing 10% SCBA has the highest mechanical strength, and increasing the SCBA percentage reduces water absorption. However, the workability of concrete in the fresh state reduces substantially with an increase in ash content. Doi: 10.28991/CEJ-2022-08-06-010 Full Text: PDF

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Section: Split Tensile Strengthsupporting

confidence: 86%

“…The SF color can be either premium white or grey [18]. Since the late 1970s, it has been extensively used to increase the density of concrete by filling the micro-voids in the cement paste [19]. Sugarcane is a widely grown crop globally, with 1.5 billion tonnes produced in over 110 nations [20].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Eco-friendly Concrete Made with Sugarcane Bagasse Ash

Abdalla

Koteng²,

Shitote³

et al. 2022

Civ Eng J

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“…Investigations on the use of RCA as a structural component in newly produced concrete are now only being placed in European countries. These structures include residential, commercial, and social buildings [20][21][22][23]. Despite this, RCA continues to be used as a filler in road fills, landfills, and embankments all over the globe [24].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the properties of recycled aggregates concrete with lime and metakaolin

Verma,

Chouksey,

Meena

et al. 2023

Mater. Res. Express

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In recent years, the use of alternative materials in cementitious systems has attracted considerable interest due to their potential for augmenting the durability and performance of concrete. This research is investigating the use of three such materials as partial cement replacements in concrete: Recycled Concrete Aggregate (RCA), Limestone, and Metakaolin. RCA is a byproduct of the demolition of concrete structures that can be recycled as aggregate. Incorporating RCA into concrete reduces the environmental impact of waste disposal and reduces the carbon burden. Due to its pozzolanic properties, limestone, a sedimentary rock composed primarily of calcium carbonate, can be used as a substitute for cement. By substituting a portion of cement with limestone, the cement manufacturing process can substantially reduce carbon dioxide emissions. Metakaolin, a thermally treated form of kaolin clay, is yet another alternative material with pozzolanic properties. When used as a partial cement replacement, metakaolin increases the concrete’s strength, durability, and chemical resistance. It also contributes to lowering hydration heat and mitigating alkali-silica reactions, thereby enhancing the durability of concrete structures. In this investigation, cement is replaced by limestone powder which is varied from 0% to 50% and the addition of metakaolin of 20% in every mix design. RCA is also incorporated in the mix design as a replacement for coarse aggregate by 20%. In the experimental investigation, various tests were conducted on each mix slump test, density, compressive strength, sulphate attack, mass loss, x-ray diffraction (XRD), and scanning electron microscope (SEM). After the investigation, the compressive strength improved by 15.07%, when metakaolin was added, and when LS was used to replace 10% of the cement, the compressive strength increased by 13.49%. The features of the combinations were negatively impacted when more cement was substituted. Following an investigation of hydration products, filler and dilution effects were found, both of which have the potential to be connected to improved mix quality. A mix that contains 20% metakaolin and 10% limestone powder may be considered the ideal mix owing to its superior strength and sulphate resistance when compared to normal concrete. It consists of less effect on slump value and density, the compressive strength was increased, and minimum mass loss after the sulphate attack. M3 mix best performer among all mix designs. It shows that the mix design with 20% metakaolin and 10% limestone powder is best-suitable for future recommendations.

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“…SCBA is the ash produced by burning the sugarcane bagasse which is a byproduct of sugar industries [3]- [6]. Every year around 0.3 billion tonnes of sugarcane and 10 million tonnes of SCBA are produced only in India [7], [8]. All over the world 110 countries produce around 1500 million tonnes of sugarcane [9] .…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Ternary Blended Concrete Mixes which contains Silica Fume and Bagasse Ash

Sivaprasad,

Venkata Krishnaiah

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Cement industries are producing high amounts of carbon dioxide, this problem leads to supplementary cementitious materials utilization. Utilization of agricultural and industrial waste in concrete reduces pollution and disposal problems. This work presents the performance evaluation of the ternary blended concrete mixes in which Silica fume and Sugarcane bagasse ash are used as mineral admixtures. A total of six mixes is used including the Reference mix, which is denoted by M0, M11, M12, M13, M14, and M15 whereas M0 represents the reference mix. M11, M12, M13, M14, and M15 are prepared by partially replacing the cement with SCBA by 5%, 10%, 15%, 20%, and 25% respectively. All the mixes were tested against mechanical and workability properties along with durability Properties and the results are clear that the mix with 15% SCBA and 5% Silica Fume significantly got better results.

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Mechanical and Durability Characteristics Assessment of Geopolymer Composite (GPC) at Varying Silica Fume Content

Cited by 31 publications

References 30 publications

Mechanical Properties of Eco-friendly Concrete Made with Sugarcane Bagasse Ash

Mechanical Properties of Eco-friendly Concrete Made with Sugarcane Bagasse Ash

Analysis of the properties of recycled aggregates concrete with lime and metakaolin

Performance Evaluation of Ternary Blended Concrete Mixes which contains Silica Fume and Bagasse Ash

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