The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU136324" target="_blank" >RIV/00216305:26110/19:PU136324 - isvavai.cz</a>

Result on the web

<a href="http://wseas.org/wseas/cms.action?id=19909" target="_blank" >http://wseas.org/wseas/cms.action?id=19909</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Original language description

Autoclaved aerated concrete (AAC) is ecological building material with useful properties. The main mineral compound of AAC is tobermorite, it increases its mechanical properties. There is examined the usage of nature and artificial siliceous materials in this study. Main aim of the study is to demonstrate the influence of individual types of materials on the tobermorite creation and to determine optimal lime/silica ratio. First step of the research focuses on analysis of the used materials. In the second step on the creation of calcium hydrosilicate phases under ideal conditions (temperature of 190 °C, pressure of 1.3 MPa) of autoclave reactors (volume of 250 ml). The autoclaved samples are next analyzed by X-ray diffraction and scanning electron microscopy for qualitative evaluation of created mineral phases. The results show that the most suitable non-traditional silica component is coal fly ash. Fly ash has the optimal combination of amorphous and crystalline SiO 2 in combination with Al 2 O 3 . These properties provided the highest proportion of created tobermorite even in more energy-saving autoclaving mode.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA17-14198S" target="_blank" >GA17-14198S: Kinetics of silicon micro-structure creation in dependence on hydrothermal conditions and type of used materials</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Name of the periodical

WSEAS Journal Transactions on Environment and Development

ISSN

1790-5079

e-ISSN

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Volume of the periodical

15

Issue of the periodical within the volume

1

Country of publishing house

IT - ITALY

Number of pages

8

Pages from-to

57-64

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85062236492