Durability and microstructural behavior of Nano silica-marble dust concrete

Kashyap, Vikram Singh; Sancheti, Gaurav; Yadav, Jitendra Singh

doi:10.1016/j.clema.2022.100165

Cited by 13 publications

(7 citation statements)

References 41 publications

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“…In addition to expediting the cement hydration process, the pozzolanic material also undergoes a reaction with CH [ 85 ]. The investigation of the CH consumption within a matrix comprising NS or MS can be effectively demonstrated through the analysis of intensity fluctuations observed in the primary diffraction peaks of crystals at specific 2θ values [ 86 ]. The products were identified and classified as quartz (Q), CH, anhydrous grains of dicalcium/tricalcium silicate (CS), and various CSH at different 2θ values.…”

Section: Resultsmentioning

confidence: 99%

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Bansal,

Bahrami

et al. 2024

PLoS ONE

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The intent of this study is to explore the physical properties and long-term performance of concrete made with metakaolin (MK) as a binder, using microsilica (MS) and nanosilica (NS) as substitutes for a portion of the ordinary Portland cement (OPC) content. The dosage of MS was varied from 5% to 15% for OPC-MK-MS blends, and the dosage of NS was varied from 0.5% to 1.5% for OPC-MK-NS blends. Incorporation of these pozzolans accelerated the hardening process and reduced the flowability, consistency, and setting time of the cement paste. In addition, it produced a denser matrix, improving the strength of the concrete matrix, as confirmed by scanning electron microscopy and X-ray diffraction analysis. The use of MS enhanced the strength by 10.37%, and the utilization of NS increased the strength by 11.48% at 28 days. It also reduced the penetrability of the matrix with a maximum reduction in the water absorption (35.82%) and improved the resistance to the sulfate attack for specimens containing 1% NS in the presence of 10% MK. Based on these results, NS in the presence of MK can be used to obtain cementitious structures with the enhanced strength and durability.

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Section: Resultsmentioning

confidence: 99%

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Bansal,

Bahrami

et al. 2024

PLoS ONE

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“…98 Consequently, decalcification, the formation of porous C−S−H, and leaching of Ca(OH) 2 during acid, sulfide, and chloride attack contribute to the degradation of concrete. 98 If MP can enhance the chloride-binding capacity of concrete and reduce the concentration of free Cl − in the pores, it can improve the durability since free Cl − is the primary cause of corrosion of embedded steel bars in concrete. Watten et al 99 also noted that in the presence of moisture, CO 2 combines with water to form carbonic acid, which then reacts with CaCO 3 to produce watersoluble calcium bicarbonate.…”

Section: Mgsomentioning

confidence: 99%

“…Cl − can act as an activator, promoting the reaction with Ca(OH) 2 and C−S−H in various ways. 98 Consequently, decalcification, the formation of porous C−S−H, and leaching of Ca(OH) 2 during acid, sulfide, and chloride attack contribute to the degradation of concrete. 98 If MP can enhance the chloride-binding capacity of concrete and reduce the concentration of free Cl − in the pores, it can improve the durability since free Cl − is the primary cause of corrosion of embedded steel bars in concrete.…”

Section: Mechanical Propertymentioning

confidence: 99%

“…However, in theory, the addition of a stone powder may trigger a new chemical reaction during chloride and sulfate attack. Cl – can act as an activator, promoting the reaction with Ca(OH) 2 and C–S–H in various ways . Consequently, decalcification, the formation of porous C–S–H, and leaching of Ca(OH) 2 during acid, sulfide, and chloride attack contribute to the degradation of concrete .…”

Section: Macro Propertiesmentioning

confidence: 99%

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Sustainable Reusing Marble Powder and Granite Powder in Cement-Based Materials: A Review

Hou,

Zhang,

Zhuang

et al. 2024

ACS Sustainable Chem. Eng.

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Marble powder (MP) and granite powder (GP) are disposed of primarily through landfilling, which leads to severe environmental issues. The utilization of stone powder in cement-based materials offers a scalable disposal method. This paper begins by presenting the two powders’ basic physicochemical and micromorphological characteristics. Then the effects and mechanisms of MP and GP on the hydration process and microstructure of the concrete are examined. Moreover, the influences of different substitution methods, water-cement ratio, and other factors on the macro properties of concrete incorporating stone powder are comprehensively summarized, bridging the gap between the microscopic changes induced by the addition of stone powder and the macroscopic differences observed in experiments. The current state of relevant technical standards is analyzed. Leveraging previous research results, we used machine learning techniques to optimize the mixture ratio of stone powder concrete with the aim of achieving a comprehensive life cycle performance index. The results reveal that by fully exploiting the fineness and composition characteristics of MP and GP, along with employing a suitable mix design, stone powders exhibit filling and nucleation effects that accelerate cement hydration, refine the pore structure, and enhance the workability, mechanical properties, and durability of concrete. Following the proposed optimization of the concrete mixture ratio, substituting 16% of cement can maintain the standard strength of 50 MPa while reducing the carbon footprint by 108.8 kg CO2e/m3 as well as saving the cost of 284.8 yuan/m3. This Review is expected to promote further applications of waste stone powder in cement-based materials to achieve sustainable development.

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“…The aforementioned outcome may be attributed to the widespread accessibility of the essential constituents of concrete, the simplicity and straightforwardness with which it can be controlled, and the relatively affordable expense associated with the substance. Building materials that are more durable and have a longer lifespan are required (Suresh and Nagaraju 2015;Vikram Singh Kashyap et al 2023;Dhanalakshmi Ayyanar et al 2023) to fulfill the continuous and unending demands that are placed on an infrastructure that is in a state of perpetual change. By increasing its resistance to deterioration over time, concrete's performance may be improved by the use of appropriate mineral additives in proportions that are just right (Dhanalakshmi and Hameed 2022;Dhanalakshmi et al 2023aDhanalakshmi et al , 2023bSukontasukkul et al 2023;Puvaneshwaran and Vipurajan 2023;Valarmathi et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Investigation on Tensile and Flexural Behaviour of Fibre Reinforced Concrete Using Artificial Neural Network

2023

Global NEST: The International Journal

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<p>The purpose of this study is to investigate the impact that using marble sludge powder as a partial replacement for cement in concrete can have. Experiments were conducted to investigate a variety of characteristics of fiber-reinforced concrete using both fresh concrete and concrete that had been allowed to solidify. In order to determine the split tensile and flexural property of FRC, two water binder ratios, such as 0.35 and 0.40, as well as percentage re-placements of 0%, 5%, 10%, 15%, 20%, and 25% of marble sludge powder and 0.5% of polypropylene 3S fibre were used. After curing for 7, 14, 28, and 56 days, the samples were put through a battery of mechanical tests to evaluate their qualities. The flexural strength and split tensile strength of the material were evaluated over the course of this investigation. In the end, an artificial neural network, also known as an ANN, was utilised in order to create a prediction model for split tensile and flexural strength. We displayed the experimentally obtained Split Tensile Strength and Flexural Strength against the regression analysis strength after 56 days for ANN. This was done so that we could compare the two. According to the findings of the experiments, using powder made from marble waste might lessen the damage that concrete causes to the environment while also providing economic benefits. In this study, dependable mechanical strength was developed by the use of a feed-forward back-propagation neural network, which consisted of eight input neurons, two hidden neurons, and one output neuron. According to the findings, it was discovered that the mechanical properties of concrete might be improved by using dry marble sludge powder as a substitute for up to 15% of the normal aggregate.</p>

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Durability and microstructural behavior of Nano silica-marble dust concrete

Cited by 13 publications

References 41 publications

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Sustainable Reusing Marble Powder and Granite Powder in Cement-Based Materials: A Review

Investigation on Tensile and Flexural Behaviour of Fibre Reinforced Concrete Using Artificial Neural Network

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