Prediction of Mechanical Strength by Using an Artificial Neural Network and Random Forest Algorithm

Upreti, Kamal; Verma, Manvendra; Agrawal, Meena; Garg, Jatinder; Kaushik, Rekha; Agrawal, Chinmay; Singh, Divakar; Narayanasamy, Rajamani

doi:10.1155/2022/7791582

Cited by 33 publications

(5 citation statements)

References 39 publications

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“…Figure 7 illustrates the percentage difference between each of the concrete mixes and M1, which serves as the reference Mix. In the recent research, predict the strength by using machine learning techniques without destructive tests [25,[69][70][71][72][73][74].…”

Section: Compressive Strength Apllied Load or Force Cross Sectional Areamentioning

confidence: 99%

“…Despite this, RCA continues to be used as a filler in road fills, landfills, and embankments all over the globe [24]. Despite this, India is the world's second-largest producer of construction and demolition waste, with an annual output of 530 million tonnes [25]. The vast bulk of the C&D waste that is produced in India is added to one of the most significant sources of solid trash in the nation [26].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Compressive Strength Apllied Load or Force Cross Sectional Areamentioning

confidence: 99%

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

Self Cite

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“…However, the mechanical and durability characteristics of concrete may also be impacted by RCA usage [18]. Studies have revealed that when the amount of RCA in the mix rises, the compressive and flexural strengths of concrete decrease [19]- [23]. The use of RCA may also make concrete more porous, which can make it less durable and more vulnerable to freeze-thaw damage [1].…”

Section: Effects Of Rca On Concrete Performancementioning

confidence: 99%

Construction and Demolition Waste Utilisation as Recycled Concrete Aggregate in Concrete: A State of Art

Verma,

Kumar Yadav

2023

JERA

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Construction and demolition waste (CDW) is a serious environmental problem since it causes greenhouse gas emissions and the loss of natural resources. However, CDW may be efficiently utilized again in concrete as RCA (recycled concrete aggregates). Concrete may use RCA in lieu of natural aggregates to lessen the environmental effect of CDW disposal and the need for natural resources. This article gives a general review of RCA's possible use in concrete, including its physical, mechanical, and durability characteristics as well as the advantages it offers in terms of both the environment and the economy. It also emphasizes the difficulties and possibilities related to the use of RCA in concrete. Construction and demolition waste (CDW), which is estimated to have been produced across the globe in excess of 2.01 billion tonnes in 2016, is a major environmental hazard. Recycling CDW for use in building may reduce the quantity of waste dumped in landfills and lessen the negative environmental effects of the construction sector. The usage of CDW as recycled concrete aggregate (RCA) in the creation of concrete is examined in this book. The characteristics of RCA, their impact on the performance of concrete, and the difficulties and advantages of using RCA in concrete are all covered in the article.

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“…40 It offers a scientific basis for the destruction or remediation of fireproof structures made with geopolymer concrete and helps to generalise the use of geopolymer concrete. [41][42][43][44][45] The non-destructive identification and deterioration of fire-damaged buildings are always utilised for ultrasonic testing. 46 Geopolymers are highly fire-resistant due to their inorganic structure, and they have exceptional thermal resistance with little gel structure deterioration identification up to 700°C-800°C.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the impact of elevated temperature on sustainable geopolymer composite

Verma,

Meena,

Singh

et al. 2023

Advances in Mechanical Engineering

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Geopolymer concrete (GPC) is an eco-friendly, sustainable, cementless and green concrete. It could be an alternative to the conventional concrete. In alkaline circumstances, the alumina and silica concentration in geopolymer concrete creates the geopolymer bond, while regular concrete creates C-S-H (calcium silicate hydrate bond). The final result of the geopolymer bond does not include any water. At elevated temperatures, geopolymer concrete would thus be more stable. Due to its greater strength and durability quality, geopolymer concrete may be the ideal replacement for ordinary portland cement (OPC) concrete. This research intends to examine how specimens of geopolymer concrete and regular concrete respond to exposure to increased temperatures between 100°C and 800°C. Mass loss, ultrasonic pulse velocity, compressive strength, X-ray diffraction, thermogravimetric analysis and derivative thermogravimetric analysis were all examined throughout the experimental examination. Both concrete specimens lose mass or weight as the exposure temperature rises; OPC concrete samples spalls at 600°C, while GPC sample fail at 800°C. GPC specimens lose around 12% of their original mass after being exposed to temperatures of 800°C, while OPC specimens lose about 7%. The GPC specimens maintained 60% of their initial compressive strength after being exposed to a temperature of 700°C, but the OPC concrete specimens only kept 52%. With each increase in exposure to extreme temperatures, the peaks of quartz and cristobalite are lowered. Only the form or structure of the mineral oxide would change; the chemical linkages would remain. The GPC samples subjected to temperatures of 100°C exhibit effective thermal stability than all other specimens exposed to extreme temperatures. As the exposure temperature rises, the GPC specimens become more thermally stable. According to the experimental findings, the GPC specimens’ bonding structure makes them more resistant to high temperatures than regular concrete specimens. Micropores are present in the voids of the geopolymer matrix, while mesopores and micropores are present in the voids of the OPC matrix. While OPC bonding is C-S-H formed by the hydration of lime and silica contained in the cement, the geopolymer bonding did not include the water content in the final or end result of geopolymerisation for strengthening.

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Prediction of Mechanical Strength by Using an Artificial Neural Network and Random Forest Algorithm

Cited by 33 publications

References 39 publications

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

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

Construction and Demolition Waste Utilisation as Recycled Concrete Aggregate in Concrete: A State of Art

Investigation on the impact of elevated temperature on sustainable geopolymer composite

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