Study on pozzolana activity of wheat straw ash as potential admixture for blended cements
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913504" target="_blank" >RIV/60461373:22310/17:43913504 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21110/17:00314726
Výsledek na webu
<a href="http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1088" target="_blank" >http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1088</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.13168/cs.2017.0032" target="_blank" >10.13168/cs.2017.0032</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Study on pozzolana activity of wheat straw ash as potential admixture for blended cements
Popis výsledku v původním jazyce
Wheat straw ash coming from combustion of packed wheat straw was studied as a potential pozzolana active admixture for blended cements. X-Ray fluorescence, X-Ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy were used to examine chemical and mineralogical composition, morphology and elemental distribution of a raw untreated ash. Due to high carbon content, the wheat straw ash was thermally treated for 2 hours at 700 C and analyzed again using the same analytic techniques. Thermal treatment process was monitored using simultaneous thermal analysis and Fourier Transform infrared spectroscopy. The pozzolana activity was assessed using Chapelle and Frattini tests. In the next step, wheat straw ash was used for preparation of blended cement pastes. The content of ash in the blends was 10, 15, and 20 % by mass. For the hardened pastes, basic physical properties, mechanical parameters, and pore size distribution were measured. For fresh past mixes, workability was tested. Moreover, leachability of chlorides, nitrates, sulfates and alkalis from paste samples was studied. The experimentally obtained data pointed to the high pozzolana activity of wheat straw ash and sufficient mechanical properties of cement pastes with the ash content up to 20 mass % of cement. In summary, the analyzed waste product from biomass combustion was found to be applicable as a part of cement-based blended binder providing economic and environmental benefits for concrete industry.
Název v anglickém jazyce
Study on pozzolana activity of wheat straw ash as potential admixture for blended cements
Popis výsledku anglicky
Wheat straw ash coming from combustion of packed wheat straw was studied as a potential pozzolana active admixture for blended cements. X-Ray fluorescence, X-Ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy were used to examine chemical and mineralogical composition, morphology and elemental distribution of a raw untreated ash. Due to high carbon content, the wheat straw ash was thermally treated for 2 hours at 700 C and analyzed again using the same analytic techniques. Thermal treatment process was monitored using simultaneous thermal analysis and Fourier Transform infrared spectroscopy. The pozzolana activity was assessed using Chapelle and Frattini tests. In the next step, wheat straw ash was used for preparation of blended cement pastes. The content of ash in the blends was 10, 15, and 20 % by mass. For the hardened pastes, basic physical properties, mechanical parameters, and pore size distribution were measured. For fresh past mixes, workability was tested. Moreover, leachability of chlorides, nitrates, sulfates and alkalis from paste samples was studied. The experimentally obtained data pointed to the high pozzolana activity of wheat straw ash and sufficient mechanical properties of cement pastes with the ash content up to 20 mass % of cement. In summary, the analyzed waste product from biomass combustion was found to be applicable as a part of cement-based blended binder providing economic and environmental benefits for concrete industry.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10402 - Inorganic and nuclear chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/GA17-02815S" target="_blank" >GA17-02815S: Výzkum a vývoj vysokohodnotných kompozitů obsahujících popílek z biomasy</a><br>
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Ceramics-Silikáty
ISSN
0862-5468
e-ISSN
—
Svazek periodika
61
Číslo periodika v rámci svazku
4
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
13
Strana od-do
327-339
Kód UT WoS článku
000418634900006
EID výsledku v databázi Scopus
2-s2.0-85034663596