Effect of SiO2 and ZnO Nano-Composites on Mechanical and Chemical Properties of Modified Concrete

Nayak, Chittaranjan B.; Taware, Pratik P.; Jagadale, Umesh T.; Morkhade, Samadhan G.

doi:10.1007/s40996-021-00694-9

Cited by 42 publications

(17 citation statements)

References 23 publications

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“…Nano-silica increases concrete's compressive strength by acting as a filler and contributing to the pozzolanic process. The findings of this study are consistent with those found by other researchers [20][21][22][23][24]. Previous research showed that early age (7 days) compressive strength of nano-silica added concrete was increased by 4.08% and 18.36% compared to the control mix with 6% and 12% nano-silica content [20].…”

Section: Findings and Discussionsupporting

confidence: 92%

Thermal properties of nano-silica added concrete

Babalu

Pimplikar

2023

J. Phys.: Conf. Ser.

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As energy costs are rising, the utilization of thermal insulating materials during construction has assumed paramount significance. The response of different building components to changes in external temperature depends on the material’s thermal properties. The investigation connected to concrete material thermal properties is an essential factor when concrete is used for constructing green buildings. The effect of adding nano-silica on the concrete’s thermal properties is explored, and the findings are shown in this paper. The experimental results reveal that compressive strength increases and density reduce for nano-silica added concrete. The investigation indicates that thermal conductivity and thermal diffusivity decrease for concrete, whereas specific heat increases with a rise in nano-silica content. Also, a mathematical model was developed for the calculation of thermal conductivity.

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Section: Findings and Discussionsupporting

confidence: 92%

Thermal properties of nano-silica added concrete

Babalu

Pimplikar

2023

J. Phys.: Conf. Ser.

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“…Khromets and E.N. Shcherbakov [2] proposed the following empirical expression for assessing the growth of concrete strength over time:…”

Section: Resultsmentioning

confidence: 99%

“…The dependence of the strength and water resistance of concrete on ܹ / ‫ܥ‬ follows from the physical essence of the formation of the concrete structure. The study of the process of cement hydration showed that cement, depending on the quality and hardening time, binds only 15...25% of water from its mass [1][2][3][4][5]. During the first month, at least 20% of water by weight of cement binds.…”

Section: Introductionmentioning

confidence: 99%

Change in the strength properties of modified concrete over time

et al. 2023

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To date, there is no data on the change in the strength of hyper - compacted concrete. The conducted field observations summarize the data of a long-term period and allow us to draw a number of conclusions. As shown by numerous studies, the nature of the development of the strength of concrete over time depends mainly on the type of cement, the composition of the concrete mixture, the temperature and humidity conditions of hardening, and also on many other factors. Obtaining highly efficient building materials is possible by modifying the structure of cement stone and concrete. Consequently, the modification of the concrete structure in this direction is intended to improve the technological properties of the material. By modifying it is possible to change the kinetics of the growth of physical properties and the final values of the strength of concrete. Without considering the physico-analytical mechanism for changing the structure formation of concrete, we note that it is primarily aimed at reducing the amount of water - a mixing agent per unit volume of the material. However, various studies have shown that in the initial period, the structure formation of cement stone develops in the optimal direction only at certain volumetric water content. The limiting reduction in water content complicates the process of hydration of the binder, limiting the final strength properties of the material. At the same time, the final strength properties of the material are improved by reducing the volumetric water content of the mixture in every possible way. In all cases, the modification of concrete assumes its composition to be unchanged from the mixing of the mixture to the final stage of the formation of the concrete structure.

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“…They determined that, based on the results of multi-regression and Taguchi experiments, cement is the most important control element for split tensile strength, and that it is also a more suitable sustainable material that has superior properties to regular concrete. The in uence of SiO 2 and ZnO nano-composites on the mechanical and chemical properties of modi ed concrete was studied by Nayak et al [25]. They found that adding n-SiO 2 additives with 0.75 percent substitution and n-ZnO additives with 0.5 percent replacement to cement improves compressive strength and split tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Use of modified palm kernel shell particles composite blend with cement or clay as alternative material for block production

Ichetaonye

Ajekwene

Ulaeto

et al. 2022

Innov. Infrastruct. Solut.

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This study presents the potential of modi ed Palm Kernel Shell (MPKS) particles in the production of blocks as an alternative building material using cement or clay as binders. Several studies on Palm Kernel Shell (PKS) as a blend with other natural bres/ llers found that due to its hydrophilic nature, it has low physical and mechanical capabilities in comparison to MPKS, making it less compatible with any polymeric matrix. Experimental tests were conducted to determine the physicomechanical attributes of MPKS/Cement and MPKS/Clay blocks, including characterization of the cement and clay using Atomic Absorption Spectroscopy (AAS), as well as moisture content, water absorption, hardness, apparent porosity, bulk density, compressive strength, and ake. The morphology of the samples was determined using Scanning Electron Microscope (SEM). Results show that MPKS/Cement block samples exhibit superior physicomechanical and morphological properties compared to MPKS/Clay. The MPKS/Cement block sample moisture content ranged between 4.76 -9.94%. The 80/20 MPKS/Cement sample recorded the most water absorption at 49.5%, and a microhardness value of 82.3 Hv for the 20/80 sample. The MPKS/Clay samples showed higher values of apparent porosity but recorded the least bulk density in the 80/20 samples. The 20/80 MPKS/Cement and MPKS/Clay samples showed the best compressive strength at 63.72 and 50.3 N/mm 2 respectively, while 80/20 for both cement and clay displayed very weak compressive strengths. The ratio 20/80 of MPKS/Cement is observed to be the optimum ratio where better properties of the composites were obtained. For the structure industry's longterm viability, MPKS' superior mechanical properties as an aggregate in block manufacturing make it an asset material as an alternative for some high-cost construction resources such as sand.

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Effect of SiO2 and ZnO Nano-Composites on Mechanical and Chemical Properties of Modified Concrete

Cited by 42 publications

References 23 publications

Thermal properties of nano-silica added concrete

Thermal properties of nano-silica added concrete

Change in the strength properties of modified concrete over time

Use of modified palm kernel shell particles composite blend with cement or clay as alternative material for block production

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