Alkali-activated fly ash foams ? synthesis, chemo-physical properties and microstructure modeling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00221387" target="_blank" >RIV/68407700:21110/14:00221387 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Alkali-activated fly ash foams ? synthesis, chemo-physical properties and microstructure modeling

Original language description

Inorganic foams offer several unique properties such as low thermal conductivity, fire resis- tance, or UV stability. Inorganic foam specimens were synthesized from fly ash and aluminium powder through an alkali-activation process. Depending on mix proportions, bulk densities ranged between 400 and 800 kg/m 3 . Thermal treatment at 80 ° C for 12 hours accelerated curing process. Compressive strength was found in the range 4.5-9.0 MPa, flexural strength 0.6-1.7 MPa, Young's modulus 0.6-1.1 GPa, thermal conductivity 0.14-0.16 W/m/K and thermal capacity around 1100 J/kg/K. Exposing the foams to temperature 800 ° C led to a small decrease of compressive strength while exposure to 1100 ° C sintered the foam to higher strength of 13 MPa. Volumetric shrinkage20% occurred at 1100 ° C with- out further disintegration. Residual compressive strength was determined after exposure to NaCl, HCl, Na 2 SO 4 , MgSO 4 , H 2 SO 4 . The highest reduction to 20% occured in both acids with pH=2 after one y

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advances in Science and Technology

ISSN

1662-0356

e-ISSN

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Volume of the periodical

92

Issue of the periodical within the volume

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Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

14-19

UT code for WoS article

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EID of the result in the Scopus database

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