Performance evaluation of silica fume and metakaolin with identical finenesses in self compacting and fiber reinforced concretes

Akcay, Burcu; Taşdemi̇r, Mehmet Ali

doi:10.1016/j.conbuildmat.2018.07.061

Cited by 53 publications

(25 citation statements)

References 40 publications

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“…And when SF and FA were used as binary blend replacement of OPC, the strengths recorded were still lower too when SF was used solely. The observation of strength increase at 10% SF is also similar to that of Akcay and Tasdemir [37] where they reported a significant increase in strength compared to the control with the incorporation of SF at 10%. Mastali and Dalvand [38] were able to improve the mechanical properties and impact resistance of SCC by the incorporation of SF and recycled steel fibres.…”

Section: Silica Fumesupporting

confidence: 86%

“…Despite the numerous advantages of incorporating SF into SCC, its use in high strength SCC was found to increase the autogenous shrinkage of the samples, which was more significant at a higher water-to-cement ratio and later ages [37]. The observed autogenous shrinkage was also higher compared to high strength SCC made with MK of the same proportion.…”

Section: Silica Fumementioning

confidence: 85%

“…Silica fume (SF) is a by-product of the ferrosilicon alloy industry, and this material has been used extensively as partial replacement of OPC in CC. The incorporation of SF into SCC has been reported to reduce the flow time of the mixture [37,38]. And the amount of superplasticizer required to achieve a flowable mixture is higher with SCC incorporating SF compared to those of MK despite the two materials having similar fineness.…”

Section: Silica Fumementioning

confidence: 99%

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Overview of trends in the application of waste materials in self-compacting concrete production

Adesina

Awoyera

2019

SN Appl. Sci.

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Self-compacting concrete (SCC) production is growing rapidly due to its several advantages in terms of enhanced properties and applications. However, there are associated sustainability issues with the SCC materials. With the demand for SCC expected to continually increase, an ideal solution is therefore required to sustain the technology, such as derivation of alternative materials. Thus, this study explores innovative application of industrial wastes in self-compacting concrete production, with the aim of finding the most appropriate technique in SCC material use. Also, the potential limitations in using some of the waste materials as sustainable alternatives were highlighted. This study found that several materials emanating from industrial rejects have been mostly investigated as a potential material for making SCC, which showed that the incorporation of waste materials into SCC could be a viable approach. However, in order to achieve optimal performance of SCC, an adequate material composition is necessary. It is clear from this study that factors such as embodied carbon, energy and cost of SCC production can notably be reduced with the incorporation of waste materials. The study also identified areas for further investigations that can help in the improvement of SCC for construction applications.

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Section: Silica Fumesupporting

confidence: 86%

Section: Silica Fumementioning

confidence: 85%

Section: Silica Fumementioning

confidence: 99%

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Overview of trends in the application of waste materials in self-compacting concrete production

Adesina

Awoyera

2019

SN Appl. Sci.

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“…At the opposite, fly ash was found to reduce shrinkage for replacement ratios between 15% and 60% because of the slower hydration reaction of mixes incorporating fly ash, but its effect might be limited for smaller replacement ratios [13,14]. Similarly, calcined clay was found to decrease autogenous shrinkage during the first weeks but can increase long-term autogenous shrinkage [15][16][17], and filler is generally reported to decrease shrinkage, acting as a small aggregate mitigating the shrinkage of the cement paste [18,19]. Due to these adverse effects, the global autogenous shrinkage behavior of complex concrete formulations is worth being investigated, especially in the case of slag and limestone filler blends [20], limestone calcined clay cement (LC3) [21], or eco-friendly ultra-high performance concrete [22,23].…”

Section: Introductionmentioning

confidence: 99%

Using machine learning techniques for predicting autogenous shrinkage of concrete incorporating superabsorbent polymers and supplementary cementitious materials

Hilloulin

Tran

2022

Journal of Building Engineering

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“…Up to now, most previous studies on the CEFs of MK were rather limited and the concept of CEF has not been applied to fresh properties. Additionally, as different researchers used different types of MK, widely different results have been obtained [18,23,[39][40][41][42][43][44][45]. In this study, the CEFs of MK for different performance attributes, including workability, cohesiveness, strength, and durability were evaluated via a systematic research programme where trial concrete mixes with varying MK content and W/CM ratio were produced for performance evaluation.…”

Section: Introductionmentioning

confidence: 99%

Cement Equivalence of Metakaolin for Workability, Cohesiveness, Strength and Sorptivity of Concrete

Chen

et al. 2020

Materials

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A series of concrete mixes with metakaolin (MK) content ranging from 0 to 30% and water/cementitious materials (W/CM) ratio varying from 0.30 to 0.50 were produced for performance testing. The results showed that adding MK up to 20% as ordinary Portland cement (OPC) replacement best improved the 28-day and 70-day cube strengths, whereas adding MK up to 30% as OPC replacement always increased the cohesiveness and decreased the sorptivity, but impaired the workability. Moreover, the cement equivalent factor (CEF), i.e. the equivalent mass of OPC per mass of MK added, for each performance attribute, including workability and cohesiveness, was evaluated. Whilst the actual CEF of MK was generally higher at a higher W/CM ratio and lower at a higher MK content, overall, the average CEFs were found to be 1.98, 2.17, 3.83, 1.93, 2.12, and 4.70 for slump, flow, cohesiveness, 28-day cube strength, 70-day cube strength, and sorptivity coefficient, respectively. These CEF values indicated that the MK is a highly effective cementitious material for improving the cohesiveness, strength, and durability. Moreover, it has been demonstrated that the CEFs for workability and cohesiveness are useful parameters in aiding the mix design of MK concrete.

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Performance evaluation of silica fume and metakaolin with identical finenesses in self compacting and fiber reinforced concretes

Cited by 53 publications

References 40 publications

Overview of trends in the application of waste materials in self-compacting concrete production

Overview of trends in the application of waste materials in self-compacting concrete production

Using machine learning techniques for predicting autogenous shrinkage of concrete incorporating superabsorbent polymers and supplementary cementitious materials

Cement Equivalence of Metakaolin for Workability, Cohesiveness, Strength and Sorptivity of Concrete

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