Properties of wheat straw ash geopolymer for construction use

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918372" target="_blank" >RIV/60461373:22310/19:43918372 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.031" target="_blank" >http://dx.doi.org/10.5593/sgem2019/6.2/S26.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2019/6.2/S26.031" target="_blank" >10.5593/sgem2019/6.2/S26.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Properties of wheat straw ash geopolymer for construction use

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Properties of wheat straw ash geopolymer for construction use

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA17-02815S" target="_blank" >GA17-02815S: Výzkum a vývoj vysokohodnotných kompozitů obsahujících popílek z biomasy</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM

ISBN

—

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

239-246

Název nakladatele

SGEM International Multidisciplinary Scientific Geoconference

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—