Phase development and mechanical response of low-level cement replacements with wood ash and washed wood ash

Nina M. Sigvardsen; Mette R. Geiker; Lisbeth M. Ottosen

doi:10.1016/j.conbuildmat.2020.121234

Phase development and mechanical response of low-level cement replacements with wood ash and washed wood ash

Nina M. Sigvardsen^*, Mette R. Geiker, Lisbeth M. Ottosen

^*Corresponding author for this work

Villum Center for Advanced Structural and Material Testing

Norwegian University of Science and Technology

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Abstract

A significant increase is seen worldwide in the amounts of wood ashes (WAs) produced by the heating and power industry. This study investigates the potential utilisation of two different WAs as low-level cement replacements, in an untreated and a washed version. Phase development and mechanical response were investigated. Results indicated ettringite formation mainly to contribute to the strength development until excessive formation. Indications of an optimum SO₃/C₃A ratio for mixtures with a low-level cement replacement with WA was between 0.4 and 0.5. Washed WA originating from grate combustion appeared to be most promising of the tested WAs in cement-based materials

Original language	English
Article number	121234
Journal	Construction and Building Materials
Volume	269
Number of pages	13
ISSN	0950-0618
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.121234
Publication status	Published - 2021

Keywords

Wood ash
ow-level cement replacement
Phase development
Mechanical response
Cement-based material

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title = "Phase development and mechanical response of low-level cement replacements with wood ash and washed wood ash",

abstract = "A significant increase is seen worldwide in the amounts of wood ashes (WAs) produced by the heating and power industry. This study investigates the potential utilisation of two different WAs as low-level cement replacements, in an untreated and a washed version. Phase development and mechanical response were investigated. Results indicated ettringite formation mainly to contribute to the strength development until excessive formation. Indications of an optimum SO3/C3A ratio for mixtures with a low-level cement replacement with WA was between 0.4 and 0.5. Washed WA originating from grate combustion appeared to be most promising of the tested WAs in cement-based materials",

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year = "2021",

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T1 - Phase development and mechanical response of low-level cement replacements with wood ash and washed wood ash

AU - Sigvardsen, Nina M.

AU - Geiker, Mette R.

AU - Ottosen, Lisbeth M.

PY - 2021

Y1 - 2021

N2 - A significant increase is seen worldwide in the amounts of wood ashes (WAs) produced by the heating and power industry. This study investigates the potential utilisation of two different WAs as low-level cement replacements, in an untreated and a washed version. Phase development and mechanical response were investigated. Results indicated ettringite formation mainly to contribute to the strength development until excessive formation. Indications of an optimum SO3/C3A ratio for mixtures with a low-level cement replacement with WA was between 0.4 and 0.5. Washed WA originating from grate combustion appeared to be most promising of the tested WAs in cement-based materials

AB - A significant increase is seen worldwide in the amounts of wood ashes (WAs) produced by the heating and power industry. This study investigates the potential utilisation of two different WAs as low-level cement replacements, in an untreated and a washed version. Phase development and mechanical response were investigated. Results indicated ettringite formation mainly to contribute to the strength development until excessive formation. Indications of an optimum SO3/C3A ratio for mixtures with a low-level cement replacement with WA was between 0.4 and 0.5. Washed WA originating from grate combustion appeared to be most promising of the tested WAs in cement-based materials

KW - Wood ash

KW - ow-level cement replacement

KW - Phase development

KW - Mechanical response

KW - Cement-based material

U2 - 10.1016/j.conbuildmat.2020.121234

DO - 10.1016/j.conbuildmat.2020.121234

M3 - Journal article

SN - 0950-0618

VL - 269

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 121234

ER -

Phase development and mechanical response of low-level cement replacements with wood ash and washed wood ash

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