Effect of fly ash and silica fume on hardened properties of foam concrete

Küçük Resim Yok

Tarih

2019

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier Ltd

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, the effects of foam content as well as fly ash and silica fume inclusion on some physical and mechanical properties of foam concrete, subjected to various curing regimes, were researched. Totally, forty-five series of foam concrete mixtures were prepared at three replacement levels of fly ash and silica fume (0, 10 and 20%, by weight of cement), at three foam contents (0, 31 and 47%, by volume) and at three curing regimes (7- and 28-day standard water curing and autoclave curing). Density, water absorption, compressive strength and thermal conductivity values of the mixtures were determined on prismatic specimens with dimensions of 40 × 40 × 160 mm. The density (oven dry), water absorption, compressive strength and thermal conductivity results of the foam concrete were found to be between 873–1998 kg/m3, 3.5–35.9%, 1.5–88.1 MPa and, 0.239–0.942 W/m.K, respectively. A balanced benefit with regard to both compressive strength and water absorption of foam concrete was found in the mix with density of 1320 kg/m3. Particularly in the mixtures having high foam content, silica fume introduction resulted in superior compressive strength values and greater compressive strength/thermal conductivity ratios than fly ash introduction. © 2018 Elsevier Ltd

Açıklama

Anahtar Kelimeler

Compressive strength, Density, Fly ash and silica fume, Foam concrete, Thermal conductivity, Water absorption, Autoclaves, Concrete mixtures, Curing, Density (specific gravity), Fly ash, Mechanical properties, Mixtures, Silica fume, Thermal conductivity, Water absorption, Autoclave curing, Conductivity ratio, Curing regimes, Foam concretes, Hardened properties, Physical and mechanical properties, Three replacements, Compressive strength, Compressive strength, Density, Fly ash and silica fume, Foam concrete, Thermal conductivity, Water absorption, Autoclaves, Concrete mixtures, Curing, Density (specific gravity), Fly ash, Mechanical properties, Mixtures, Silica fume, Thermal conductivity, Water absorption, Autoclave curing, Conductivity ratio, Curing regimes, Foam concretes, Hardened properties, Physical and mechanical properties, Three replacements, Compressive strength

Kaynak

Construction and Building Materials

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

194

Sayı

Künye