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Physical and mechanical properties of cement mortars with biomass ashes as SCM

Author(s): Mirjana Malešev, Vlastimir Radonjanin, Miroslava Radeka, Slobodan Šupiü, Suzana Draganiü
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference
Materials, Systems and Structures in Civil Engineering 2016
Segment on Concrete with Supplementary Cementitious Materials
Editor(s): Ole M. Jensen, Konstantin Kovler and Nele De Belie
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 236-245
Total Pages: 10
Language : English

Abstract: Utilization of biomass ashes as building material or as raw material in the manufacture of building products can be regarded as a sustainable form of utilization as the use of ashes saves the use of non-renewable resources, reduces the amount of agricultural waste and CO2 emission. Significant agricultural residues of field production in Serbia are: wheat straw, corn cobs, soy straw, sunflower husk and oil rape straw. The study contains data on physical properties, chemical characteristics and pozzolanic properties of sunflower straw and husk, soya and wheat straw and mixture of soya and wheat straw. Comparative analyses of the results of their pozzolanic activity tests have influenced further use of wheat straw and mixture of wheat and soya straw as supplementary cementitious materials in preparation of mortars. This paper also presents experimental research of influence of chosen biomass ashes on physical and mechanical properties of cement mortars. A comparative analysis of compressive strength, drying shrinkage and capillary water absorption of cement mortars was conducted. Content of ashes was varied from 10 to 30% in relation to cement mass. The results suggest that the biomass ashes can be used in mortars as substitutes of cement without compromising their mechanical performances.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00

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