Properties of wheat straw ash geopolymer for construction use

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332112" target="_blank" >RIV/68407700:21110/19:00332112 - 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

Properties of wheat straw ash geopolymer for construction use

Original language description

Today the use of biomass combustion for the generation electric power is enormously growing. It is due to the worldwide interest in the environmental sustainability and production of renewable energy. With increasing amount of biomass combusted for energy supply, huge quantity of biomass ash is generated worldwide. One of the open questions related to extensive biomass combustion is what we are going to do with this huge amount of biomass ash. Considering both the environmental and economic issues, biomass ash must be safely treated, and preferably reused as a secondary raw material in production process. As construction industry suffers from the lack of natural resources for production of building materials, the use of biomass ash in their composition could be effective solution of its disposal. At the presented study we focused at the valorisation of wheat straw ash as filler in new type of eco-efficient alkali-activated geopolymer. In intensive experimental campaign, two types of geopolymers were studied. One of the geopolymers was composed of coal fly ash, alkali activator, and silica sand. This material was used as a reference one. In composition of the second one, fly ash was partially substituted with wheat straw ash. The wheat straw ash and coal fly ash were physical and chemically analysed using particle size analyser, helium pycnometry, XRF, SEM and EDS. For the hardened geopolymers, set of structural, mechanical, hygric, and thermal properties was determined. The geopolymer produced with wheat straw ash admixture exhibited increased mechanical strength, lower porosity and thus reduced water transport parameters compared to reference material. Based on the obtained data it was concluded, the newly developed geopolymer represents eco-efficient low cost alternative to cement-based products.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA17-02815S" target="_blank" >GA17-02815S: Research and development of high performance composites containing biomass ash</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

Article name in the collection

19th International Multidisciplinary Scientific Geoconference SGEM 2019

ISBN

978-619-7408-89-8

ISSN

1314-2704

e-ISSN

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Number of pages

8

Pages from-to

239-246

Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Albena

Event date

Jun 30, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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