Use of gasification residues in aerated autoclaved concrete

Erika Holt (Corresponding Author), Paula Raivio

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Abstract

Two fine-grained residues produced by gasification of wastes were tested for their suitability in aerated autoclaved concrete (AAC). AAC typically has additional aluminium powder added to the raw ingredients to facilitate the formation of small gas bubbles which provide a low-density product. Both gasification residues had high amounts of metallic aluminium and thus were well suited for this application. Studies were conducted to determine whether the residue addition would eliminate the need for the extra aluminium powder for creating air voids. Simultaneously, the residues replaced some of the aggregate ground in the process, thus enabling savings in energy consumption. Initial laboratory tests determined how much residue could be added and what type of concrete mixture proportioning was needed. Multiple properties were tested on AAC with 10% residue addition, with and without the additional aluminium powder. After laboratory investigations, full-scale tests were done at the Siporex AAC factory in Finland. These tests revealed that the residues offer a promising resource for economic production of AAC without detrimental effects to the final products.
Original languageEnglish
Pages (from-to)796 - 802
Number of pages7
JournalCement and Concrete Research
Volume35
Issue number4
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

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Gasification
Aluminum
Concretes
Powders
Concrete mixtures
Industrial plants
Energy utilization
Gases
Economics
Air

Keywords

  • mixture proportioning
  • admixtures
  • ash
  • gasification

Cite this

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title = "Use of gasification residues in aerated autoclaved concrete",
abstract = "Two fine-grained residues produced by gasification of wastes were tested for their suitability in aerated autoclaved concrete (AAC). AAC typically has additional aluminium powder added to the raw ingredients to facilitate the formation of small gas bubbles which provide a low-density product. Both gasification residues had high amounts of metallic aluminium and thus were well suited for this application. Studies were conducted to determine whether the residue addition would eliminate the need for the extra aluminium powder for creating air voids. Simultaneously, the residues replaced some of the aggregate ground in the process, thus enabling savings in energy consumption. Initial laboratory tests determined how much residue could be added and what type of concrete mixture proportioning was needed. Multiple properties were tested on AAC with 10{\%} residue addition, with and without the additional aluminium powder. After laboratory investigations, full-scale tests were done at the Siporex AAC factory in Finland. These tests revealed that the residues offer a promising resource for economic production of AAC without detrimental effects to the final products.",
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Use of gasification residues in aerated autoclaved concrete. / Holt, Erika (Corresponding Author); Raivio, Paula.

In: Cement and Concrete Research, Vol. 35, No. 4, 2005, p. 796 - 802.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Use of gasification residues in aerated autoclaved concrete

AU - Holt, Erika

AU - Raivio, Paula

PY - 2005

Y1 - 2005

N2 - Two fine-grained residues produced by gasification of wastes were tested for their suitability in aerated autoclaved concrete (AAC). AAC typically has additional aluminium powder added to the raw ingredients to facilitate the formation of small gas bubbles which provide a low-density product. Both gasification residues had high amounts of metallic aluminium and thus were well suited for this application. Studies were conducted to determine whether the residue addition would eliminate the need for the extra aluminium powder for creating air voids. Simultaneously, the residues replaced some of the aggregate ground in the process, thus enabling savings in energy consumption. Initial laboratory tests determined how much residue could be added and what type of concrete mixture proportioning was needed. Multiple properties were tested on AAC with 10% residue addition, with and without the additional aluminium powder. After laboratory investigations, full-scale tests were done at the Siporex AAC factory in Finland. These tests revealed that the residues offer a promising resource for economic production of AAC without detrimental effects to the final products.

AB - Two fine-grained residues produced by gasification of wastes were tested for their suitability in aerated autoclaved concrete (AAC). AAC typically has additional aluminium powder added to the raw ingredients to facilitate the formation of small gas bubbles which provide a low-density product. Both gasification residues had high amounts of metallic aluminium and thus were well suited for this application. Studies were conducted to determine whether the residue addition would eliminate the need for the extra aluminium powder for creating air voids. Simultaneously, the residues replaced some of the aggregate ground in the process, thus enabling savings in energy consumption. Initial laboratory tests determined how much residue could be added and what type of concrete mixture proportioning was needed. Multiple properties were tested on AAC with 10% residue addition, with and without the additional aluminium powder. After laboratory investigations, full-scale tests were done at the Siporex AAC factory in Finland. These tests revealed that the residues offer a promising resource for economic production of AAC without detrimental effects to the final products.

KW - mixture proportioning

KW - admixtures

KW - ash

KW - gasification

U2 - 10.1016/j.cemconres.2004.05.005

DO - 10.1016/j.cemconres.2004.05.005

M3 - Article

VL - 35

SP - 796

EP - 802

JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

IS - 4

ER -