Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates

M. Mastali (Corresponding Author), P. Kinnunen, Heikki Isomoisio, Marjaana Karhu, M. Illikainen

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

Original languageEnglish
Pages (from-to)371-381
Number of pages11
JournalConstruction and Building Materials
Volume187
DOIs
Publication statusPublished - 30 Oct 2018
MoE publication typeNot Eligible

Fingerprint

Acoustic properties
Alkalies
Slags
Foams
Concretes
Mechanical properties
Fibers
Binders
Compressive strength
Sponge iron
Polyvinyl Alcohol
Basalt
Polypropylenes
Polyvinyl alcohols
Particle size analysis
Bending strength
Byproducts
Calcium
Acoustics
Chemical analysis

Keywords

  • Acoustic properties
  • Alkali-activated slag foam concrete
  • Lightweight panels
  • Lightweight structural aggregates
  • Mechanical characterizations

Cite this

@article{ed0fc4fdd3554c7fa480ae28836babc9,
title = "Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates",
abstract = "This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35{\%} of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.",
keywords = "Acoustic properties, Alkali-activated slag foam concrete, Lightweight panels, Lightweight structural aggregates, Mechanical characterizations",
author = "M. Mastali and P. Kinnunen and Heikki Isomoisio and Marjaana Karhu and M. Illikainen",
year = "2018",
month = "10",
day = "30",
doi = "10.1016/j.conbuildmat.2018.07.228",
language = "English",
volume = "187",
pages = "371--381",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier",

}

Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates. / Mastali, M. (Corresponding Author); Kinnunen, P.; Isomoisio, Heikki; Karhu, Marjaana; Illikainen, M.

In: Construction and Building Materials, Vol. 187, 30.10.2018, p. 371-381.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates

AU - Mastali, M.

AU - Kinnunen, P.

AU - Isomoisio, Heikki

AU - Karhu, Marjaana

AU - Illikainen, M.

PY - 2018/10/30

Y1 - 2018/10/30

N2 - This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

AB - This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

KW - Acoustic properties

KW - Alkali-activated slag foam concrete

KW - Lightweight panels

KW - Lightweight structural aggregates

KW - Mechanical characterizations

UR - http://www.scopus.com/inward/record.url?scp=85050807444&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2018.07.228

DO - 10.1016/j.conbuildmat.2018.07.228

M3 - Article

VL - 187

SP - 371

EP - 381

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

ER -