Influence of Type of Secondary Raw Material on Consistency of Fresh Mixture for AAC Production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU135067" target="_blank" >RIV/00216305:26110/20:PU135067 - isvavai.cz</a>

Result on the web

<a href="https://www.scientific.net/MSF.998.305" target="_blank" >https://www.scientific.net/MSF.998.305</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/msf.998.305" target="_blank" >10.4028/www.scientific.net/msf.998.305</a>

Result language

angličtina

Original language name

Influence of Type of Secondary Raw Material on Consistency of Fresh Mixture for AAC Production

Original language description

Autoclaved aerated concrete (AAC) is, mainly in Europe, widely used construction material. It has an optimal combination of bulk density, strength and thermal conductivity coefficient for load-bearing and non-load-bearing structures of civil facilities. The production technology is based on a mixture of ground silica sand, lime, cement, gypsum, aluminium powder and additives. The grinding of sand is most often carried out in a wet way, and the sand sludge is consequently used in production technology. The aim of the experiment was verification of the effect of partial replacement of sand with the alternative raw materials in sand sludge on the rheology of the mixture. This parameter determinates how the modified mixtures affect the sludge pumpability. As a reference the consistency of the sand sludge of the normal production density of 1.65 g/cm3 was compared to the sand sludges of different density (1.60, 1.70 and 1.75 g/cm3) and with a fresh aerated concrete (FAC) mixture of 1.60 g/cm3. Then the sludges were modified by 30 % of alternative raw materials (recycled glass, coal slag, FBC ash, FBC bottom ash) as the partial weight replacement for sand. This partial replacement resulted in water/solids ratio adjustment which recommended value is 0.47 for recycled glass and coal slag, 0.59 for fluidized bed combustion (FBC) bottom ash and for FBC fly ash it is 0.70.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20501 - Materials 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

2020

Confidentiality

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

Article name in the collection

8th International Conference on Material Science and Engineering Technology, ICMSET 2019

ISBN

978-3-0357-1606-1

ISSN

0255-5476

e-ISSN

—

Number of pages

6

Pages from-to

305-310

Publisher name

Trans Tech Publications Ltd

Place of publication

Neuveden

Event location

Singapore

Event date

Oct 19, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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