Chapter 47: Cellular Concrete

Fouad, F. H.

doi:10.1520/stp37765s

Cited by 7 publications

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“…In the works of Hoff [14] and Nambiar and Ramamurthy [40], a value of the volume of non-evaporable water equal to 80 % of the cement weight in the mixture was adopted. On the other hand, Legatski [41] and Fouad [42] determined that the dry density is approximately 80 kg/m 3 less than the wet one, being able to be up to 160 kg/m 3 less than that one.…”

Section: Design and Elaborationmentioning

confidence: 99%

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

Retamal

Rougier

2022

AMR

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Foamed cellular concrete (FCC) is a type of lightweight concrete. Traditionally, it has been used for insulation and void filling. However, in the last years, the possibility of obtaining high strength FCC has motivated the study of its structural use. The novelty and uniqueness of this article is to provide a review of the most important aspect of FCC including component materials, design and mix elaboration, physical properties and mainly, its mechanical behaviour. Also, in order to achieve a global understanding of the material and its characteristics, advances regarding its physical properties are collected: density, porosity, thermal, acoustic and water insulation, durability, fire resistance and drying shrinkage. Then mechanical properties such as elastic modulus, compressive, tensile, bending and shear behaviour, are analysed. The literature review also aims to evaluate the influence of using inert and active mineral additions, fibers and chemical additives to improve its mechanical and physical properties. Based on the work done, research needs have been identified: there are no prediction models for stress-strain behaviour with complete curves for FCC in compression nor in traction, the performed numerical modelling is scarce, use and effect of chemical additives is a not far studied, long-term tests are scarce or nil, the evaluation of resistance in different aggressive environments has not been sufficiently evaluated.

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Section: Design and Elaborationmentioning

confidence: 99%

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

Retamal

Rougier

2022

AMR

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“…Lightweight foamed concrete (LFC) is a type of cellular concrete produced by the foaming mixture method. Stable voids, which the microscopic air-void was approximately 0.1 to 1.0 mm, are introduced into the cement paste [2]. LFC had a least of 20% volume of entrained foam in the cement paste [3].…”

Section: Introductionmentioning

confidence: 99%

Strength Performance on Different Mix of Cement-Sand Ratio and Sand Condition for Lightweight Foamed Concrete

et al. 2018

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Proper cement-sand ratio and water content can provide excellent consistency and stability for lightweight foamed concrete. The aims of this study are to investigate the comprehensive optimisation design mix of lightweight foamed concrete with different cement-sand ratio and the effect of sand size and admixture towards the consistency and stability of the design mix. Silica fume as admixture was used to verify the improvements in the strength of the foamed concrete. Two types of foamed concrete were prepared, namely SC with sieved sand and UC with unsieved sand used in foamed concrete. Three different cement-sand ratios with different water content were tested for the above two types of foamed concrete for their compressive strength, consistency and stability. The results indicate that foamed concrete using sieved sand gained better consistency and stability. In addition, using silica fume in foamed concrete significantly improved the compressive strength with the highest strength at 27.12 MPa with 1700 kg/m3 density.

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“…Foam concrete is a lightweight cementitious composite, cast to densities ranging from 300 kg/m 3 to 1900 kg/m 3 (Fouad 2006). An optimal balance between the mechanical strength and requirements of thermal insulation is typically found for densities around 1000 kg/m 3 (Fouad 2006). While the higher densities are almost always lightweight mortars with fine aggregate, the lighter mixtures are essentially highly airentrained paste systems, useful for non-structural functions including thermal and acoustic insulation.…”

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Correlating the cellular network, in foamed concrete containing ash, with their physical properties

2021

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Cellular concrete is a lightweight solid cementitious foam that is used mainly for thermal insulation and sound absorption. Either partially or wholly, when the Portland cement in the binder is replaced with ash, the environmental impact of the material is reduced. However, the resulting changes in the cell structure and their subsequent impact upon the physical properties of the material have not been well examined. In this study, cellular concrete was prepared from alkali activated fly ash binders and separately, from Portland cement binders blended with wood ash. The cell structure was photographed using laser confocal microscopy and the images were analyzed to quantify the cellular network in terms of the porosity and the fractal dimension of the porous phase. Alongside, the cellular concrete specimens were tested for their thermal constants and sound absorption. The results show that there was an increase in the fractal dimension and an associated drop in thermal conductivity for an increase in the porosity.

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Chapter 47: Cellular Concrete

Cited by 7 publications

References 0 publications

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

Strength Performance on Different Mix of Cement-Sand Ratio and Sand Condition for Lightweight Foamed Concrete

Correlating the cellular network, in foamed concrete containing ash, with their physical properties

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