Physical and mechanical properties of foamed concrete, a literature review

Shankar, A.N.; Chopade, Sushil; Srinivas, R.; Kumar Mishra, Nirmith; Eftikhaar, H.K.; Sethi, Gaurav; Singh, Bharat

doi:10.1016/j.matpr.2023.10.105

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…Behnam Mobaraki et al proposed an algorithm for an observability analysis of two-dimensional cellular structures, which provides a new approach for applications in characterizing concrete structures [15]. Studies on the preparation of foam concrete have shown that its density grade ranges from 300 to −1700 kg/m 3 and that its porosity is between 0.1 and 0.9 [16][17][18][19][20]. The effect of fly ash and silica fume admixture on compressive strength and thermal conductivity of foam concrete was investigated by H. Süleyman Gökçe et al [21].…”

Section: Introductionmentioning

confidence: 99%

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Study on the Coupled Heat Transfer of Conduction, Convection, and Radiation in Foam Concrete Based on a Microstructure Numerical Model

Huang,

Wang,

Feng

et al. 2024

Buildings

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Foam concrete is a typical cement-based porous material; its special microstructure endows it with excellent properties, such as light weight, energy efficiency, thermal insulation, and fire resistance. Therefore, it is widely used as a thermal insulation material for buildings. The heat transfer modes of foam concrete include conduction, convection, and radiation. However, previous studies considered conduction to be the dominant mode, often neglecting the effects of convection and radiation. In this study, a stochastic numerical model of the foam concrete microstructure is established based on the statistical parameters of the pore structure. With this model, the heat transfer mechanism of foam concrete is analyzed at the mesoscopic level, and the equivalent thermal conductivity is calculated. By comparing four different working conditions, the influence of conduction, convection, and radiation on the heat transfer of foam concrete is analyzed, and the specific contribution rates of conduction, convection, and radiation are calculated. The results show that the convection effect is weak due to the pore size being smaller than 1 ; so, the influence of convection can be neglected in the heat transfer analysis of foam concrete. The contribution of radiation increases with the decrease in foam concrete density and the increase in temperature difference. When the temperature difference is 40 and the density is 300 , the contribution of radiation exceeds 20. Therefore, for low-density and high-temperature difference situations, the influence of radiation cannot be ignored. The heat transfer in foam concrete is mainly through conduction, but with the decrease in density and the increase in temperature difference, the contribution of conduction shows a downward trend. Nevertheless, the contribution of conduction is still much larger than that of radiation and convection.

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Section: Introductionmentioning

confidence: 99%

“…Figure16. The variation in the ratio of the equivalent thermal conductivity calculated under condition 3 to that calculated under condition 1 with the density of foam concrete.…”

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confidence: 97%