Reduction of the capillary water absorption of foamed concrete by using the porous aggregate

Namsone, Elvija; Šahmenko, Genādijs; Korjakins, Aleksandrs

doi:10.1088/1757-899x/251/1/012030

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…2). It was proved [29] that the use of intensive mixing technologies combined with lightweight fillers is a way to achieve the lowest water absorption values and drying shrinkage, among other types of cellular concretes. Furthermore, this composition is characterized by thermal transmittance of 0.18 W/m 2 K. It is comparable to the AAC block; − Sample 4 (Fig.…”

Section: Wall System Samples Used For Life-cycle Assessmentmentioning

confidence: 99%

Sustainable Wall Solutions Using Foam Concrete and Hemp Composites

Šahmenko

Šinka

Namsone

et al. 2021

Environmental and Climate Technologies

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This work is devoted to developing an energy-efficient solution for the external wall and evaluating its environmental impact. Several types of innovative single-layer and sandwich-type wall solutions were analysed and compared. Different constructive and thermal insulation materials were used, including traditional wall materials such as AAC (autoclaved aerated concrete) and normal concrete. Advanced materials, such as high-performance foamed concrete (HPFC) and natural biofibre composites, have been evaluated as an alternative solution. Ultra-light foam concrete was applied as an alternative for polymer-based insulation. The next development was sandwich three-layer wall constructions consisting of foam concrete and natural biofibre composites. A prototype of a wall panel was elaborated with outer layers of high-density bio-composite and a middle layer of high porosity hemp composite. Basic properties of sandwich blocks, such as density and thermal conductivity, were evaluated and compared. The environmental impact of the studied wall systems was analysed using a life-cycle assessment (LCA) to assess carbon dioxide emissions during the production phase of the material. The results show that replacing traditional insulation with bio-based materials has greatly reduced the negative environmental impact of the wall elements. A combination of natural fibre bio-composite and mineral insulating foam makes it possible to obtain an eco-friendly and sustainable sandwich-type wall system.

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Section: Wall System Samples Used For Life-cycle Assessmentmentioning

confidence: 99%

Sustainable Wall Solutions Using Foam Concrete and Hemp Composites

Šahmenko

Šinka

Namsone

et al. 2021

Environmental and Climate Technologies

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“…The phenomena were associated with the closed cell structure of the beads. Furthermore, capillary water absorption of EPS-based lightweight composite with densities ranging from 445 to 565 kg/m 3 varied from 66.6 to 11.0 g/dm 2 , respectively [36]. Capillary water absorption depended on the initial composition of the mixture, the additives used, and the structure of the closed cells of the porous filler.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effect of the Composition of the Foam Glass Concrete on Its Flammability and Moisture Characteristics

Šeputytė-Jucikė,

Vėjelis,

Vaitkus

et al. 2024

J. Compos. Sci.

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The purpose of this study was to evaluate the moisture and flammability characteristics of lightweight concrete with different aggregates and different amounts of cement according to different criteria. The moisture properties of the specimens were evaluated by the coefficient of water absorption due to capillary action, short-term water absorption, and water vapour permeability. Short-term water absorption correlated with the density of the specimens, and capillary absorption was evaluated depending on the soaking time, amount of cement, and type of lightweight aggregate. The values of the water vapour diffusion resistance factor were estimated based on the amount of cement, the type of lightweight aggregate, the density, and the porosity. The porosity correlated with the amount of cement and the type of lightweight aggregate. The flammability properties of concrete with lightweight aggregate were evaluated by several methods, such as the single flame source test, the single burning item test, and the non-combustibility test. After assessing the flammability characteristics, a structure analysis of the samples was specifically performed to assess the processes that occur during the combustion of lightweight concrete. It was found that short-term water absorption depended mainly on the density, capillary absorption on the amount of cement, and the water vapour diffusion resistance factor, flammability, and thermal stability of lightweight concrete on the type of granules.

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“…To date, several studies have been carried out on the utilization of industrial solid waste for the production of aerated concrete, the replacement of fine aggregate with fly ash, and the influence of the type of filler on aerated concrete; the research results have shown that an increase in the content of fly ash improves the quality of aerated concrete [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Strength characteristics of aerated concrete with fly ash filler from Angren Thermal Power Plant

Otajonov

Sattorov

2023

E3S Web of Conf.

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This article focuses on fly ash aerated concrete, a new and very useful material in the construction industry and is basically a suspension of cement mortar with a maximum content of aluminum powder of 0.2 % by volume. A description of the conducted experimental study on the effect of the complete replacement of river sand with fly ash for various mixtures is given, and compressive strength indicators are also given.

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Reduction of the capillary water absorption of foamed concrete by using the porous aggregate

Cited by 8 publications

References 6 publications

Sustainable Wall Solutions Using Foam Concrete and Hemp Composites

Sustainable Wall Solutions Using Foam Concrete and Hemp Composites

Evaluation of the Effect of the Composition of the Foam Glass Concrete on Its Flammability and Moisture Characteristics

Strength characteristics of aerated concrete with fly ash filler from Angren Thermal Power Plant

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