Development of a strength model for foam concrete based on water – cement ratio

Meera, Miss; Gupta, Sachin

doi:10.1016/j.matpr.2020.04.888

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…In reality, the hydration water is approximately linearly correlated with the water-cement ratio when the cement is not fully hydrated. This is supported by the majority of research results [11] . The strength of the incompletely hydrated foamed lightweight soil is significantly lower than what is predicted by Nambiar's model.…”

Section: Development Of the Improved Strength Modelsupporting

confidence: 69%

“…Meera [11] f c =f w+α×F w+k×f n Foam concrete (Some specimens contain fly ash) However, most of the previous strength prediction models are for foam concrete with completed hydration. In contrast, foamed lightweight soil is incompletely hydrated with a short maintenance time, which could lead to considerable deviation in strength prediction if the strength models for foam concrete are applied directly.…”

Section: Numbermentioning

confidence: 99%

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Design of a strength model for foamed lightweight soil

Li,

Chen,

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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Foamed lightweight soil has been widely used in civil engineering, and the model for foam concrete has been employed to predict its strength. However, various previous strength models of foam concrete are generally based on the assumption of complete hydration, which is not the case for foamed lightweight soil. For example, Nambiar’s model (reference), a simple and widely used model, sets the ratio of hydrated water to cement by weight as an empirical constant, which is actually related to the water-cement ratio before the completion of hydration for foamed lightweight soil. To address this issue, an improved strength model tailor-made for foamed lightweight soil was proposed to establish a relationship between the ratio of hydrated water to cement and the water-cement ratio. The improved model and the original Nambiar’s model were compared with actual strength data, which shows that this improved model is more effective for foamed lightweight soil.

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Section: Development Of the Improved Strength Modelsupporting

confidence: 69%

Section: Numbermentioning

confidence: 99%

Design of a strength model for foamed lightweight soil

Li,

Chen,

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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“…To make the foam more stable, silica fume is added at the liquid foaming stage in FC [ 28 ]. The strength of FC was modeled with the help of various mechanical properties [ 29 , 30 ]. Maglad et al [ 31 ] found that the distribution of the pore size of FC is different, influencing the properties (mechanical and durability) of FC.…”

Section: Introductionmentioning

confidence: 99%

Enhanced fresh and hardened properties of foamed concrete modified with nano-silica

Othuman Mydin,

Jagadesh,

Bahrami

et al. 2024

Heliyon

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“…The concrete flowability depends on the water/cement ratio (W/C) and is highly increased by the presence of superplasticizers in the recipe [22][23][24]. Moreover, the same flowability can be achieved by including a SP and reduce the W/CM ratio, while increasing the concrete strength and durability in the meantime with paste volume reduction, improving also its dimensional stability.…”

Section: Introductionmentioning

confidence: 99%

The Use of Water Reducing Additives for Development of New Ecological and High-Performance Materials

Mihai,

Mihaela,

Igor

et al. 2023

Ecology & Safety

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The decreasing amount of the world's water supply is a significant issue nowadays. Global warming is one of the key factors contributing to the increasing loss of water supplies, but wasteful water usage for domestic and industrial use is also a major factor. The water consumption reduction by using proper additives is a technique to reduce high water consumption in the construction sector. Sulphonated melamine formaldehyde, sulphonated naphthalene formaldehyde, modified lignosulphonates and polycarboxylate derivatives are examples of additives providing this feature. Condensed polymers are the basis for producing these additives. Their action mechanism consists in the de-flocculation of the cement granules and improving the workability of freshly mixed concrete. The water reduction potency of polycarboxylate derivatives is substantially higher than that of other additives. In the same time, the use of modified lignosulphonates also solves the problem of associated environmental pollution, being a by-product from the wood pulp processing by the sulfite process. Details about water consumption reducing additives will be presented in this paper based on literature review and on the author's own experience: the preparation methods, chemical composition and properties of the obtained building materials.

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Development of a strength model for foam concrete based on water – cement ratio

Cited by 6 publications

References 17 publications

Design of a strength model for foamed lightweight soil

Design of a strength model for foamed lightweight soil

Enhanced fresh and hardened properties of foamed concrete modified with nano-silica

The Use of Water Reducing Additives for Development of New Ecological and High-Performance Materials

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