Effects of various sizes of cenospheres on microstructural, mechanical, and thermal properties of high-strength and lightweight cementitious composites

Yang, Jingwei; Mahato, Jyoti; Moon, Juhyuk

doi:10.1016/j.jobe.2023.107214

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…Haddadian et al [22] used coal bottom ash and found that CBA(0%) had 12.96% water absorption, while CBA(25%) had 20.15%. Majhi et al [24] found that SF(0%) had 17.1% water absorption, but adding SF(10%) reduced it to 11.3%. Kim [26] found that adding 50% slag and CS resulted in 33.71% water absorption, while adding 50% slag alone increased it to 36.20%.…”

Section: Durability Propertymentioning

confidence: 99%

“…Beddu et al[23] investigation discovered that utilizing cenosphere instead of ordinary cement boosted the concrete's strength by 59.6% to 28.8 Mpa. Majhi et al[24] research revealed that employing silica fume as a cement substitute resulted in a strength of 30 Mpa, but without the substitution, the strength reduced by 6.25% to 32 Mpa. Yang et al[25]experiment discovered that utilizing CS as a substitute for cement resulted in a strength of 60 Mpa, but using SF resulted in a strength of 92 Mpa, a 34.78% reduction.…”

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confidence: 99%

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Review of Mechanical, Durability, and Thermal properties of Light weight concrete containing cenosphere

Jose,

Radhakrishnan,

Anandan

et al. 2024

E3S Web of Conf.

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Compared to conventional concrete, lightweight concrete offers a reduced unit weight, making it easier to handle and transport. Its popularity has surged globally in numerous countries and has proven beneficial for construction purposes. Lightweight concrete often exhibits better thermal insulation properties compared to traditional concrete, contributing to energy efficiency in buildings. Recently, the inclusion of cenospheres in lightweight aggregates is being is heavily researched around the world. Ceneosphere addition increases the volume of the concrete mixture because of their smaller size and hollow nature of the particle. This research paper showcases the various applications and advantages of lightweight concrete (LWC) containing cenosphere, along with highlighting the role of different supplementary cementitious materials characteristics and manufacturing methods. Furthermore, the current study examines previous researches on sustainable lightweight concretes and showcases the improvements and advancements in mechanical, durability, and thermal properties obtained when cenospheres were added.

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Section: Durability Propertymentioning

confidence: 99%

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confidence: 99%

Review of Mechanical, Durability, and Thermal properties of Light weight concrete containing cenosphere

Jose,

Radhakrishnan,

Anandan

et al. 2024

E3S Web of Conf.

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Effect of cenospheres on the proprieties of plain concrete exposed to elevated temperature

Gabriela,

Paweł,

Aleksandra

et al. 2024

Clean Techn Environ Policy

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The main objective of the study was to determine the effect of the use of cenospheres for C30/37 class concretes used in construction and road construction. As part of the research, four concrete mixtures were designed: three with the addition of cenospheres and one reference mixture, without the additive. In the three modified mixtures, 20, 40 and 60% of fine aggregate were replaced by cenospheres, respectively. Selected features of the mixtures were determined—consistency and density, as well as the strength properties of concrete. Strength tests were carried out after 28 and 56 days of maturation. Experimental tests of concrete after initial thermal treatment were also carried out at three selected temperatures: 300, 500 and 700 °C, with loading times ranging from 60 to 180 min. These times were selected in such a way that the samples could be heated in their entire volume. A separate group of experimental studies was microstructure studies, the aim of which was to assess the changes occurring in concrete under the influence of high temperatures and to try to justify why CS-I concrete containing cenospheres in the amount of 20% of concrete subjected to annealing at 300 °C has a higher compressive strength than the corresponding reference concrete. The negative influence of cenospheres on the strength of concrete after initial thermal treatment was unequivocally demonstrated. An increase in the amount of cenospheres causes a decrease in compressive strength. A similar negative relationship was also demonstrated in the case of non-heat-treated samples. Graphical Abstract

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Lightweight insulating oil-well cement filled with hollow glass microspheres and numerical simulation of its unsteady heat transfer process

Wang,

Ma,

Yuan

et al. 2024

Adv Compos Hybrid Mater

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During subsea natural gas extraction, the free water and gas molecules present in the reservoir and the low-temperature and high-pressure conditions of the subsea environment cause the formation of hydrates; the blockage of the wellbore due to these hydrates is a critical issue that affects ow safety.Located between the wellbore and casing, well cement plays an important role in strengthening the wellbore and sealing off the oil, gas, and water layers. A cement that exhibits optimal mechanical strength and enhanced thermal insulation properties can contribute to preventing hydrate formation.However, research on such materials is rare. In this study, lightweight and thermally insulated (LWTI) composites with the desired mechanical strength for deep-sea natural gas development were prepared using oil-well cement (OWC) as the matrix and hollow glass microspheres (HGM) as the ller. A twophase mathematical model of the HGM/OWC LWTI composites was developed using the COMSOL Multiphysics software and solved using the nite element method. A transient heat transfer analysis of the HGM/OWC LWTI composites was performed. The effective thermal conductivities (k eff ) of the HGM/OWC LWTI composites were measured and the values agreed well with the simulation results. The k eff of the composites was approximately 0.371 W/(m•℃) when the HGM (D51.8) content was 40 vol.%.Compared to the traditional OWC (thermal conductivity ~ 0.889 W/(m•℃)), the thermal insulation performance of the HGM/OWC LWTI composites was signi cantly improved. In addition, the density, mechanical properties, and water absorption of the HGM/OWC LWTI composites were investigated. The densities of the HGM/OWC LWTI composites were found to be low, ranging from 1.31 to 1.94 g/cm 3 . The HGM/OWC LWTI composites exhibited good compressive strength and low permeability. Thus, HGM/OWC LWTI has promising applications in the thermal insulation of cemented wellbores for deepsea natural gas development.

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Effects of various sizes of cenospheres on microstructural, mechanical, and thermal properties of high-strength and lightweight cementitious composites

Cited by 4 publications

References 45 publications

Review of Mechanical, Durability, and Thermal properties of Light weight concrete containing cenosphere

Review of Mechanical, Durability, and Thermal properties of Light weight concrete containing cenosphere

Effect of cenospheres on the proprieties of plain concrete exposed to elevated temperature

Lightweight insulating oil-well cement filled with hollow glass microspheres and numerical simulation of its unsteady heat transfer process

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