Influence of Metakaolin, Fly Ash and Nano Silica on Mechanical and Durability Properties of Concrete

Kumar, Rabinder; Yaseen, Airil Yasreen B. Mohd; Shafiq, Nasir; Jalal, Asif

doi:10.4028/www.scientific.net/kem.744.8

Cited by 20 publications

(13 citation statements)

References 22 publications

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“…Partial substitutions of cement by a combination of cement replacing materials (CRMs) are advantageous not only from the economic point of view but also for their mechanical and microstructural characteristics [10]. The use of CRMs into concrete has gained popularity with emphasis on increasing the service life of concrete structures [11]. Many CRMs are commercially available and can be used in concrete.…”

Section: Imentioning

confidence: 99%

Effect of Sugarcane Bagasse Ash and Lime Stone Fines on the Mechanical Properties of Concrete

Bheel¹,

Memon²,

A.³

et al. 2020

Eng. Technol. Appl. Sci. Res.

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Cement production releases huge amounts of carbon dioxide having a significant impact on the environment while also having huge energy consumption demands. In addition, the disposal and recovery of natural concrete components can lead to environmental degradation. The use of waste in concrete not only reduces cement production, but it also reduces energy consumption. The aim of this study is to evaluate the properties of fresh and hardened concrete by partially replacing cement with sugarcane bagasse ash (SCBA) and limestone fines (LSF). In this investigation work the cement was replaced with SCBA ash and LSF by 0% (0% SCBA+ 0% LSF), 5% (2.5% SCBA+ 2.5% LSF), 10% (5% SCBA+ 5% LSF), 15% (7.5% SCBA+ 7.5% LSF) and 20% (10% SCBA+ 10% LSF) by weight of cement. In this regard, a total of 60 samples of concrete specimens were made with mix proportion of 1:1.5:3 with 0.56 water-cement ratio. Cube specimens were tested for compressive strength and cylindrical specimens were used for determining splitting tensile strength at 7 and 28 days respectively. The optimum result displayed that the crushing strength and split tensile strength increased by 10.33% and 10.10% while using 5% SCBA+ 5% LSF as a substitute for cement in concrete after the 28th day. The slump value of concrete declined as the content of SCBA and LSF increased.

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Section: Imentioning

confidence: 99%

Effect of Sugarcane Bagasse Ash and Lime Stone Fines on the Mechanical Properties of Concrete

Bheel¹,

Memon²,

A.³

et al. 2020

Eng. Technol. Appl. Sci. Res.

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“…However, the increased cement contents not only creates more heat of hydration, autogenous shrinkage and higher costs, but also causes the emission of large amounts of CO 2 into the environment from the calcination of limestone and fuel combustion during the manufacturing of cement clinker (Zeman, 2009). Approximately, one ton of cement releases one ton CO 2 , which is responsible for 5% of greenhouse gas emissions (Kumar et al, 2017). To minimize greenhouse effects, the addition of industrial byproducts and agricultural wastes have been observed as sustainable alternatives because they successfully replace bulk proportions of cement in ECCs without compromising strength and ductility (Kumar et al, 2017;Shafiq et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Approximately, one ton of cement releases one ton CO 2 , which is responsible for 5% of greenhouse gas emissions (Kumar et al, 2017). To minimize greenhouse effects, the addition of industrial byproducts and agricultural wastes have been observed as sustainable alternatives because they successfully replace bulk proportions of cement in ECCs without compromising strength and ductility (Kumar et al, 2017;Shafiq et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Role of Sugarcane Bagasse Ash in Developing Sustainable Engineered Cementitious Composites

et al. 2020

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Sugarcane bagasse is an agricultural waste that can be transformed by incineration into a cement replacement material for various cementing purposes. This study investigated the role of finely ground bagasse ash (GBA) in producing engineered cementitious composites (ECCs) with the addition of polyvinyl alcohol (PVA) fibers. The main focus of this study was to develop a green ECC with higher strength capabilities (compressive, tensile, and flexural) and greater tensile ductility. To develop this composite, GBA was added into ECC mixes at different proportions, i.e., 10, 20, and 30%. The proportions of PVA fibers and the water-to-binder ratio were kept constant. The results revealed that the ECC mix containing 10% GBA exhibited higher compressive strength compared to that of a control and the other ECC mixes. The tensile and flexural strengths of the ECCs exhibited patterns almost similar to that of compressive strength. Moreover, the deflection in the control mix was higher compared to that of the GBA-ECC mixes at an initial curing age. The ECC mix containing 10% GBA exhibited better ductile behavior among all the ECC mixes used in this study.

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“…One of the efforts is introducing the value-added cement replacement materials (CRM) in the new recipe of concrete. Some of the value-added materials, i.e., fly ash (FA), silica fume (SF), and ground granulated blast-furnace slag (GGBS) have been widely used that improve the service life and reduce the maintenance cost of the structure [6]. The benefits of such materials were obtained because they refined the pore structure of concrete by blocking the pore connectivity, which results in lower permeability and higher strength [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Modified Metakaolin Using Nano-Silica on the Mechanical Properties and Durability of Concrete

et al. 2019

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This paper discussed the effects of modified metakaolin (MK) with nano-silica (NS) on the mechanical properties and durability of concrete. In the first phase, trial mixes of concrete were prepared for achieving the desired value of the 28 days compressive strength, and the charge passed in rapid chloride permeability test (RCPT). In the second phase, statistical analysis was performed on the experimental results using the response surface method (RSM). The RSM was applied for optimizing the mix proportions for the required performance by exploiting the relationship between the mix characteristics and the corresponding test results. A blend of 10% MK + 1% NS as part of cement replacement exhibited the highest mechanical properties and durability characteristics of concrete; concrete mix showed that the 28-days compressive strength (CS) was 103 MPa, which was 15% greater than the CS of the control mix without MK or NS. The same mix showed more than 40% higher flexural and split-tensile strength than the control mix; also it resulted in a reduction of 73% in the rapid chloride permeability value. ANOVA technique was used for optimizing the nano-silica and metakaolin content for achieving maximum compressive strength and minimum RCPT value. Statistical analysis using ANOVA technique showed that the maximum compressive strength and lowest RCPT value could be achieved with a blend of 10% MK and 1.55% NS.

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Influence of Metakaolin, Fly Ash and Nano Silica on Mechanical and Durability Properties of Concrete

Cited by 20 publications

References 22 publications

Effect of Sugarcane Bagasse Ash and Lime Stone Fines on the Mechanical Properties of Concrete

Effect of Sugarcane Bagasse Ash and Lime Stone Fines on the Mechanical Properties of Concrete

Role of Sugarcane Bagasse Ash in Developing Sustainable Engineered Cementitious Composites

Effects of Modified Metakaolin Using Nano-Silica on the Mechanical Properties and Durability of Concrete

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