Pozzolana active wheat straw ash as admixture for cement-based construction materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43918380" target="_blank" >RIV/60461373:22310/17:43918380 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.5593/sgem2017/62/S26.044" target="_blank" >http://dx.doi.org/10.5593/sgem2017/62/S26.044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2017/62/S26.044" target="_blank" >10.5593/sgem2017/62/S26.044</a>

Result language

angličtina

Original language name

Pozzolana active wheat straw ash as admixture for cement-based construction materials

Original language description

Cement manufacturing has been always ranked in the list of the main sources of carbon emissions among industrial activities. Almost 5-7% of global CO2 emissions are caused by cement plants, while about 900 kg CO2 is emitted to the atmosphere for producing one ton of cement. On this account, there is laid pressure to reduce cement consumption by the use of alternative binders. In this paper, we would like to show that wheat straw ash can be used for the fabrication of construction composites with lower cement content. Biomass ash from packed wheat straw was characterized using X-Ray fluorescence, X-Ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. In the next step, the ash pozzolanic activity was accessed using Chapelle test. Since the examined biomass was pozzolana active, it was used as partial Portland cement replacement in blended binder based pastes. The content of biomass ash in paste mixes was 10, 15 and 20 mass% of cement respectively. The water/binder ratio was 0.4. For the casted paste samples, bulk density, matrix density, and total open porosity were measured. In order to prove pozzolanic character of the wheat straw ash, mechanical resistivity of paste samples was tested. In these tests, compressive strength and flexural strength were measured and strength activity index was calculated. Experimental data showed that an application of biomass as from combustion of wheat straw in the amount up to 20 mass% of cement provided sufficient mechanical resistivity of the cement paste. In summary, the analysed ash was found to be prospective material for concrete industry contributing to the reduction of CO2 emission.

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

20102 - Construction engineering, Municipal and structural engineering

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

2017

Confidentiality

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

Article name in the collection

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

ISBN

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ISSN

1314-2704

e-ISSN

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Number of pages

8

Pages from-to

351-358

Publisher name

SGEM International Multidisciplinary Scientific Geoconference

Place of publication

Sofia

Event location

Albena

Event date

Jun 29, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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