Investigation of effective replacement of sand by waste perlite in AAC production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU150220" target="_blank" >RIV/00216305:26110/23:PU150220 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.2092" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.2092</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cepa.2092" target="_blank" >10.1002/cepa.2092</a>

Result language

angličtina

Original language name

Investigation of effective replacement of sand by waste perlite in AAC production

Original language description

Aerated concrete is a lightweight building material with excellent thermal and technical properties, relative to strength, excellent workability, and is economically advantageous. The basic composition of raw materials includes lime, cement, silica sand, and aluminum powder. Currently, the usability of secondary raw materials is being investigated in many construction sectors. The usability of secondary raw materials becomes a necessity from an ecological and economic point of view. The elimination of CO2 emissions is currently a major global issue. Secondary raw materials used in the construction industry are most often waste materials produced during the combustion of solid substances. These substances are often accumulated in landfills, which have a negative impact on the surrounding environment. It is necessary to constantly look for new ways of using these waste materials not only in the construction industry. The use of these raw materials reduces the price of the final product. It is advantageous if it also brings about a positive change in the properties of aerated concrete. The article deals with the possibility of replacing part or all of the sand content in the recipe of autoclaved aerated concrete with waste perlite. As part of the experimental verification, the influence of waste perlite filler on physical-mechanical properties (e.g., bulk density, strength) and changes in microstructure is investigated. Primary sand is replaced by perlite in the amount of 10%, 30%, 50%, and 100% by volume in the experiments. The formation of porous structure, its characteristics, and mineralogical composition, in particular the formation of tobermorite, is also evaluated. The study has brought an interesting finding. The results show that the maximum beneficial amount of waste perlite is 30%. Up to this limit, waste perlite has a positive effect on the even distribution of pores in the matrix, with a zero-phase content of more than 65%. The compressive strength of the

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA23-04824S" target="_blank" >GA23-04824S: Influence of alternative raw material components on improvement of physico-mechanical properties of aerated autoclaved concrete</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

ce/papers

ISSN

2509-7075

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

7

Pages from-to

403-409

UT code for WoS article

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EID of the result in the Scopus database

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