NEW SGEM Scientific Online eLibrary
After a long time work, our pride is the absolutely new SGEM Online eLibrary, available here. The Library is created according the rules of the International databases, with a whole needed information and ability to export the article in BIB format. Try and spread your experience with us.
Till we complete the new library with papers from all the years, you can use this link /Full Old Library/, if papers that you need are not visible yet here.

WOOD CHIPS ASH AS POZZOLANA ACTIVE ADMIXTURE FOR MORTARS

Pavlikova, M.; Zemanova, L.; Zaleska, M.; Jankovsky, O.; Pavlik, Z.
Abstract:
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.
SGEM Research areas:
Year:
2018
Type of Publication:
In Proceedings
Keywords:
biomass combustion; wood chips; pozzolanic activity; mechanical properties; strength activity index
Volume:
18
SGEM Book title:
18th International Multidisciplinary Scientific GeoConference SGEM 2018
Book number:
6.3
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
461-468
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
02-08 July, 2018
ISBN:
978-619-7408-52-2
ISSN:
1314-2704
Conference:
18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
DOI:
10.5593/sgem2018/6.3/S26.060
Hits: 861