Fresh, mechanical, sorptivity and rapid chloride permeability properties of self-compacting concrete with silica fume and fly ash

Çelik, Zinnur; Bingöl, Ahmet Ferhat; Ağsu, Ayhan Soner

doi:10.1007/s40996-021-00676-x

Cited by 18 publications

(7 citation statements)

References 34 publications

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“…By decreasing the requirement for cement, using supplemental cement ingredients like SF and FA has a favorable impact on energy, economical, and environmental considerations in the concrete industry (Dong et al, 2015;Hossain et al, 2016;Liu et al, 2017;de Matos et al, 2020;Kumar et al, 2021a;Alaloul et al, 2021;Çelik et al, 2022). Optimizing concrete mixes using supplementary content is another important consideration in literature (AlShareedah and Nassiri, 2021;Bhuva and Bhogayata, 2022;Wang et al, 2022b;Chen et al, 2022;Rezazadeh Eidgahee et al, 2022;Siamardi, 2022;Solouki et al, 2022;Sun et al, 2022;Warda et al, 2022).…”

Section: Introduction 1general Research Backgroundmentioning

confidence: 99%

Global warming potential-based life cycle assessment and optimization of the compressive strength of fly ash-silica fume concrete; environmental impact consideration

Onyelowe

Ebid

Riofrio

et al. 2022

Front. Built Environ.

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In this research study, extensive literature searches on the compressive strength of concrete produced from the addition of fly ash (FA) and silica fume (SF) as extra constituents to the conventional concrete mixes, which gave rise to 330 mix points of concrete database. Due to the worrisome environmental impact of concrete production and usage in concrete activities, it has been pertinent to conduct the life cycle impact assessment of this procedure. Secondly, due to the over dependence of concrete production experts on laboratory exercise, there is also an urgent need to propose equations that reduce this dependence, that can be used in design, construction and performance evaluation of concrete infrastructure, hence the multi-objective nature of this research work. The results of the global warming potential (GWP) based on cement dosage show that Portland cement contributes about 90% of the total score. This is followed by the use of coarse aggregate contributing 6%, superplasticizer, 3% and fine aggregates, 2%. These show the functions of CO2 emissions and other greenhouses gas emissions in the entire system. Also, the result of the terrestrial acidification potential (TAP) for the concrete mixes in this study show that the lowest cement mix “C340-FAg658-FA0-SF15ˮ has a human toxicity, both carcinogenic and non-carcinogenic that showed an added impact of about 14 kg of 1, 4 equivalents of dichlorobenzene (DCB eq.). This result is 428% less impact than other studies found in the literature that used FA. Finally, it was found that the addition of FA and SF in concrete has a lowering effect on the environmental impact indicators due to reduced cement dosage. Furthermore, the results of the model predictions show that ANN with a performance index of 0.986 (4.8%) showed decisive superiority to predict the compressive strength of the FA-SF concrete over EPR, 0.951 (8.7%), GP, 0.94 (9.5%) and GEP, 0.93 (10%).

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Section: Introduction 1general Research Backgroundmentioning

confidence: 99%

Global warming potential-based life cycle assessment and optimization of the compressive strength of fly ash-silica fume concrete; environmental impact consideration

Onyelowe

Ebid

Riofrio

et al. 2022

Front. Built Environ.

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“…This is due to the high water-cement ratio of these samples which is >0.50. Other mixtures yield moderate chloride permeability (between 2000-4000) which is typical for concrete with a water-cement ratio between 0.40 to 0.50 [15]. 4 SCC mix number 10 yields the highest current flowing for the whole duration of the test.…”

Section: Rapid Chloride Ion Penetration Resultsmentioning

confidence: 95%

Corrosion Behavior Analysis of Self-Compacting Concrete Using Impressed Current and Rapid Chloride Penetration Test

Clemente¹

2023

GEOMATE

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Corrosion is the leading reason for reinforced concrete structures reduced service life. Structures such as ports and harbors and bridges and other offshore and near shore are prone to chlorideinduced corrosion. This research evaluates the use of self-compacting concrete (SCC) as an alternative concrete for such structures. In theory, SCC reduced water content, and high cement and powder content will help protect the reinforcement from chloride intrusion because of its lower porosity and the alkalinity that the cement provided. Sixteen different mixtures of SCCs were mixed and tested for rheology, compressive strength, rapid chloride ion penetration test (RCPT), and impressed current (IC). Water content is the significant factor that affects both RCPT and IC. The segregation of SCC when too much water-cement ratio is combined with a high amount of superplasticizer resulted in a high level of corrosion in the reinforcement. The formation of cracks accelerates the corrosion due to the increased flow of current in the IC set-up. The impressed current technique is the suggested method for determining the corrosion resistance of concrete since it simulates the similar effect of corrosion to concrete which is cracking. It also stimulates the effect of rust on the flow of current. A rapid chloride penetration test is a good indicator of the durability of concrete but may be insignificant for predicting the corrosion level of reinforcement for SCC. Segregation negatively affects the total charge passed in the impressed current and the corrosion level of the rebar.

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“…Furthermore, it has been observed that the electronic flux rating in concrete containing the same level of SF is generally lower [ 35 , 36 ] when compared to C60 concrete produced using regular water, with the exception of SF content at 10%. This phenomenon is attributed to the stable solid–liquid interface generated by the introduction of micro-nano bubbles in the concrete, leading to better mixing of SF particles with other elements in the concrete and a uniform distribution throughout the structure [ 37 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Micro-Nano Bubble Water and Silica Fume on Properties of C60 Concrete

Wan

et al. 2023

Materials

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Micro-nano bubble water (WNBW) in concrete is relatively uncommon due to its newness as a technology. This paper presents the preparation of C60 concrete with 35% fly ash (FA) through WNBW and varying amounts of silica fume (0%, 4%, 7%, and 10% SF). The study examines the impact of WNBW and SF on the working performance, compressive strength, and durability of concrete. The findings indicate that applying WNBW and SF independently or jointly deteriorates the working performance of fresh concrete. However, compared to regular mixing water, WNBW reduces the concrete passing time through the V-funnel, decreasing by 40%, 39.1%, 42.9%, and 50.5% for the four varying SF contents. Furthermore, using WNBW, SF, or both resulted in the increased compressive strength of concrete at 7 days and 28 days, with 7% SF content yielding a 12.2% and 6.6% increase, respectively. Using a combination of WNBW and SF has been shown to decrease the impermeability of concrete effectively. The addition of 4% SF results in the lowest electric flux when using regular mixing water, with a discernible decrease of 30.1% compared to the control group. Conversely, using WNBW as mixing water yields a decrease in electric flux at each SF content, with the maximum decrease being 39.7%. Furthermore, both the single and combined use of these materials can contribute to the reduction in the carbonation resistance of the concrete. C60 concrete mixed with 7% SF and 100% WNBW boasts enhanced frost resistance, as indicated by the mass loss and dynamic elastic modulus loss being the least following freeze–thaw under the same SF content. According to the findings of the tests, there is evidence that the incorporation of 7% SF and 100% WNBW into C60 concrete results in lowered viscosity, a highly advantageous attribute for actual construction. Additionally, this mixture displays impressive compressive strength and durability properties. These results provide technical support regarding the integration of WNBW and SF in C60 concrete.

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Fresh, mechanical, sorptivity and rapid chloride permeability properties of self-compacting concrete with silica fume and fly ash

Cited by 18 publications

References 34 publications

Global warming potential-based life cycle assessment and optimization of the compressive strength of fly ash-silica fume concrete; environmental impact consideration

Global warming potential-based life cycle assessment and optimization of the compressive strength of fly ash-silica fume concrete; environmental impact consideration

Corrosion Behavior Analysis of Self-Compacting Concrete Using Impressed Current and Rapid Chloride Penetration Test

Effect of Micro-Nano Bubble Water and Silica Fume on Properties of C60 Concrete

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