Wood Chips Ash as Pozzolana Active Admixture for Mortars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322203" target="_blank" >RIV/68407700:21110/18:00322203 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2018/6.3/S26.060" target="_blank" >http://dx.doi.org/10.5593/sgem2018/6.3/S26.060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2018/6.3/S26.060" target="_blank" >10.5593/sgem2018/6.3/S26.060</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wood Chips Ash as Pozzolana Active Admixture for Mortars

Popis výsledku v původním jazyce

In this paper we focused at the analysis of the possible use of biomass ash coming from wood chips combustion as pozzolanic admixture in mortar mix design. Biomass ash was characterized by XRF, SEM, and EDS analyses. The pozzolanic activity of the ash was tested using a modified Chapelle test. As the examined ash was pozzolana active, it was used as partial PC replacement in the composition of cement-based mortars. The PC replacing ratio was 10 and 15 wt. %. For the hardened mortar samples, bulk density, matrix density and total open porosity were accessed. The pozzolanic activity of biomass ash was verified also using the measurement of mortars mechanical parameters and calculation of strength activity index. All these measurements were performed for 28 and 180 days hardened samples. Mechanical strength data showed, an application of ash coming from wood chips combustion in the amount up to 15 mass % of cement provided sufficient mechanical resistance of cement-based mortars. For 180 days cured samples, the strength activity index was 86.2% for 10 mass% of PC replacement, and 81.2% for 15% cement substitution. This data clearly characterizes the pozzolanic reactivity of the examined ash that slightly retarded strength evolution. On the other hand, the final strength values are high and give biomass ash potential for its use in cement-based materials. In summary, the analyzed ash was found to be prospective material for construction industry contributing to the reduction of energy for clinkering, CO2 emission and mining of raw materials for PC production.

Název v anglickém jazyce

Wood Chips Ash as Pozzolana Active Admixture for Mortars

Popis výsledku anglicky

In this paper we focused at the analysis of the possible use of biomass ash coming from wood chips combustion as pozzolanic admixture in mortar mix design. Biomass ash was characterized by XRF, SEM, and EDS analyses. The pozzolanic activity of the ash was tested using a modified Chapelle test. As the examined ash was pozzolana active, it was used as partial PC replacement in the composition of cement-based mortars. The PC replacing ratio was 10 and 15 wt. %. For the hardened mortar samples, bulk density, matrix density and total open porosity were accessed. The pozzolanic activity of biomass ash was verified also using the measurement of mortars mechanical parameters and calculation of strength activity index. All these measurements were performed for 28 and 180 days hardened samples. Mechanical strength data showed, an application of ash coming from wood chips combustion in the amount up to 15 mass % of cement provided sufficient mechanical resistance of cement-based mortars. For 180 days cured samples, the strength activity index was 86.2% for 10 mass% of PC replacement, and 81.2% for 15% cement substitution. This data clearly characterizes the pozzolanic reactivity of the examined ash that slightly retarded strength evolution. On the other hand, the final strength values are high and give biomass ash potential for its use in cement-based materials. In summary, the analyzed ash was found to be prospective material for construction industry contributing to the reduction of energy for clinkering, CO2 emission and mining of raw materials for PC production.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

18th International Multidisciplinary Scientific Geoconference SGEM 2018 - Nano, Bio, Green ans Space - Technologies for a Sustainable Future

ISBN

978-619-7408-52-2

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

461-468

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—