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POZZOLANA ACTIVE WHEAT STRAW ASH AS ADMIXTURE FOR CEMENT-BASED CONSTRUCTION MATERIALS
Abstract
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.
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References15
Záleská M., Pavlíková M., Pavlík Z. Classification of a-SiO2 Rich Materials, Materials Science Forum, vol. 824, 2015, pp 33-38.
Snellings R., Mertens G., Elsen J., Supplementary cementitious materials, Reviews in Mineralogy and Geochemistry, vol. 74, 2012, pp 211-278.
Müller U., K. Rübner, The microstructure of concrete made with municipal waste incinerator bottom ash as an aggregate component, Cement and Concrete Research, vol. 36, 2006, pp 1434-1443.
Salvo M., Rizoo S., Caldirola M., Novajra G., Canonico F., Bianchi M., Ferraris M., Biomass ash as supplementary cementitious material (SCM), Advances in Applied Ceramics, vol. 114, 2015, pp S3-S10.
Rodrigues M. S., Beraldo A. L., Savastano Júnior H., Santos S. F., Cinza de palha de cana-de-açúcar como adição mineral em fibrocimento. Revista Brasileira de Engenharia Agrícola e Ambiental, 2013.
Nehdi M., Duquette J., and El Damatty A., Performance of rice husk ash produced using a new technology as a mineral admixture in concrete, Cement and concrete research, vol. 33, 2003, pp 1203-1210.
Pavlík Z., Fořt J., Záleská M., Pavlíková M., Trník A., Medved I., Keppert M., Koutsoukos P. G., Černý R., Energy-efficient thermal treatment of sewage sludge for its application in blended cements, Journal of Cleaner Production, vol. 112, 2016, pp 409- 419.
Cheah C.B., Ramli M., The implementation of wood waste ash as a partial cement replacement material in the production of structural grade concrete and mortar: An overview. Resources, Conservation and Recycling, vol. 55, 2011, pp 669-685.
Aprianti E., Shafigh P., Bahri S., Farahani J. N., Supplementary cementitious materials origin from agricultural wastes–A review, Construction and Building Materials, vol. 74, 2015, pp 176-187.
Vassilev S. V., Baxter D., Andersen L. K., Vassileva C. G., An overview of the composition and application of biomass ash.: Part 2. Potential utilisation, technological and ecological advantages and challenges, Fuel, vol. 150, 2013, pp 19-39.
Modolo R., Ferreira V., Tarelho L., Labrincha J., Senff L., Silva L., Mortar formulations with bottom ash from biomass combustion, Construction and Building Materials, vol. 45, 2013, pp 275-281.
Cheah C.B., Ramli M., Mechanical strength, durability and drying shrinkage of structural mortar containing HCWA as partial replacement of cement, Construction and Building Materials, vol. 30, 2012, pp 320-329.
EN 12390-7 Testing hardened concrete - Part 7: Density of hardened concrete, CEN, 2000.
EN 12390-5 Testing hardened concrete – Part 5: Flexural strength of test specimens, CEN, 2009.
EN 12390-7 Testing hardened concrete – Part 7: Density of hardened concrete, CEN, 2009.
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