Effect of Aluminium Powder on Light-weight Aerated Concrete Properties

Van, Lam Tang; Kim, Dien Vu; Xuan, Hung Ngo; Dinh, Tho Vu; Булгаков, Борис; Bazhenova, Sofia

doi:10.1051/e3sconf/20199702005

Cited by 16 publications

(10 citation statements)

References 13 publications

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“…In recent years, there has been a steady trend towards increased demand for autoclaved aerated concrete products, which are characterised by low thermal conductivity with sufficient density and strength due to the presence of a significant number of artificially created pores. The main problem of autoclaved aerated concrete technology is the multi-component composition and instability of the porization process which can result in lowering of the compressive strength [14][15][16][18][19][20][21]. The analysis of literature sources showed that to obtain light and ultra-light concrete, two ways of obtaining cells are mainly used: the introduction of gas formers into the concrete mass (aluminium powder or aluminium paste) or the foam formers mainly based on an organic compounds.…”

Section: Autoclaved Aerated Concrete Technology Researchmentioning

confidence: 99%

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Review of selected aspects of shaping of physical, mechanical and thermal properties and manufacturing technology of lightweight and ultra-lightweight autoclaved aerated concrete

2023

Archives of Civil Engineering

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The paper provides an overview of selected scientific articles presenting research carried out in recent years on methods for producing autoclaved aerated concrete. Traditional technologies are briefly presented, together with innovative solutions for the production of low-density and ultra-lowdensity materials. In addition to the presentation of the manufacturing methods themselves, the results of research into the properties of the autoclaved aerated concrete obtained and their dependence on the technology used are also presented. A subjective selection and review of articles covering research into the thermal conductivity of concrete, the technological factors influencing them and the ways in which they can be shaped was also carried out. A significant number of the cited articles do not function in the world scientific circulation due to the language barrier (they are mainly in Ukrainian). In the meantime, they contain interesting research results which can inspire further research into the issues discussed concerning the production technology and the thermal and strength properties of autoclaved aerated concrete, with particular emphasis on lightweight and ultra-lightweight concrete.

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Section: Autoclaved Aerated Concrete Technology Researchmentioning

confidence: 99%

“…The influence of aluminium powder dosage on selected properties of aerated concrete containing 30% of fly ash was researched in [20]. Aluminium powder was introduced into the composition of foamed concrete in the amount from 0.25 to 1.00% of cement mass.…”

Section: Autoclaved Aerated Concrete Technology Researchmentioning

confidence: 99%

Review of selected aspects of shaping of physical, mechanical and thermal properties and manufacturing technology of lightweight and ultra-lightweight autoclaved aerated concrete

2023

Archives of Civil Engineering

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“…They scatter among and separate the cement particles because of their distribution of smaller-sized particles. By utilising fibers and aluminium powder in reaction with cement, a novel concrete combination that produces durable concrete will be produced [13][14][15][16]. From the explanation above, it is clear that polypropylene fibers and aluminium powder are becoming more popular in concrete building and may eventually take the place of traditional concrete.…”

Section: Need For Addition Of Polypropylene Fibers and Aluminium Powd...mentioning

confidence: 99%

A Study on Partial Replacement of Cement by Aluminium Powder in Polypropylene Fiber Reinforced Concrete

Sripathi¹,

Rao²,

Oggu³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The fibers are well described by a combination of stiffness, strength, and temperature resistance. A lightweight polymer material with great strength, resistance to corrosion, and crack arresting properties is polypropylene fiber. The structure is lighter than ordinary concrete because of the reaction between the aluminium powder and the calcium hydroxide in the cement matrix, which results in the production of hydrogen gas. It is used to make concrete more durable and strong. Due to its reduced particle size distribution, they scatter among and separate the cement particles, changing the cement paste’s structure such that it contains more C-S-H and less Ca(OH)2. In this study, final mix proportions to attain M30 & M60 grades are computed and effects of adding polypropylene fibers varying from 0.5 to 2.0 percent are studied. 1.5 percent gave the better results dependent on mechanical properties of the concrete. A variable percent of aluminium powder is then substituted for the fiber optimization percent (1.5 percent) dependent on mechanical properties of the concrete. Slump test, compressive, split tensile, and flexural strength tests are used to evaluate the quality and 1.0 percent gave the better results dependent on the tests. The mixture that develops a practical, cost-effective, and strength criteria is sorted out and examined for durability by conducting sorptivity and acid attack tests. It is concluded that the addition of polypropylene fibers improved the strength of concrete relatively and the addition of aluminium powder improved the durability of the concrete.

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“…The search for an aerating agent [5][6][7] that avoids all these issues is therefore of high relevance for the producers who, moreover, could also reduce the safety-related costs.…”

Section: Bio Innovation In the Processmentioning

confidence: 99%

The Bio-aerated Autoclaved Concrete: A New Solution for a Sustainable Product in the Building Sector

Cardinale¹,

Sposato²,

Alba³

et al. 2020

TI-IJES

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This paper describes the results of an experimentation carried out at the ENEA laboratories of Trisaia Research Center concerning an innovative cellular concrete, covered by an international patent (patent WO/2019/049005): The Bio Autoclaved Aerated Concrete (BAAC). This innovative material preserves the characteristics of the commercial aerated Autoclavated concrete, but in its formulation the metallic aluminum powder does not cause the aeration process that determines the development of the porosity. On the contrary an organic agent is used as biocatalysts of hydrogen peroxide breakdown reactions, whereby molecular oxygen and water are obtained as reaction products. Many are the advantages deriving from the proposed new approach, considering the particular nature of the aerating agent: from the economic affordability, to a greater environmental sustainability thanks to simplification and safety of the entire production process. BAAC samples with a density of 500 kg/m 3 were produced and characterized by a physical and mechanical point of view, according to the technical standards. The results obtained are very similar to those of the AAC. The final product is therefore proposed as a green product, on which we are still working in order to include in the mix design components derived from by-products of other industrial processes.

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Effect of Aluminium Powder on Light-weight Aerated Concrete Properties

Cited by 16 publications

References 13 publications

Review of selected aspects of shaping of physical, mechanical and thermal properties and manufacturing technology of lightweight and ultra-lightweight autoclaved aerated concrete

Review of selected aspects of shaping of physical, mechanical and thermal properties and manufacturing technology of lightweight and ultra-lightweight autoclaved aerated concrete

A Study on Partial Replacement of Cement by Aluminium Powder in Polypropylene Fiber Reinforced Concrete

The Bio-aerated Autoclaved Concrete: A New Solution for a Sustainable Product in the Building Sector

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