Mix-design and Properties of Mortars from Alkali-activated Fly Ashes Containing High Amounts of Unburned Carbon Matter
Source abstract
Abstract
Abstract Alkali-activated materials are a promising type of binder candidate as a substitute to Portland cement. Fly ashes can be used as binder precursors giving higher environmental benefits. In the present research, fly ashes (Type F) containing different amounts of unburned carbonaceous matter have been used to formulate mortars. Serious problems concerning the workability in the fresh state have been found when high carbon content are reached. An attempt to avoid the preliminary treatments used to eliminate the unburned matter is carried out by exploiting different mix-design receipts obtained by changing the water/binder ratio, the ratio of the alkaline activators and using different types of superplasticizer additives. Data so far collected underline that a high amount of unburned carbonaceous matter can not only compromise the mechanical properties of the materials, but also the rheological ones and underline the necessity to develop ad hoc additives for this type of binders.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Recycled Aggregate Concrete Performance · Recycling and utilization of industrial and municipal waste in materials production
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References (38)
Show source-provided references
1. Bignozzi, M. C., Manzi, S., Natali, M. E., Richard, W. D. A., & van Riessen, A. (2014). Room temperature alkali activation of fly-ash: the effect of Na2O/SiO2 ratio. Construction and Building Materials, 69, 262–270.10.1016/j.conbuildmat.2014.07.062 ↗
2. Bursi, E., Barbieri, L., Lancellotti, I., Saccani, A., & Bignozzi, M. (2017). Lead waste glasses management: chemical pre-treatment for use in cementitious composite. Waste Management & Research, 35(9), 958–966.10.1177/0734242X17715098 ↗
3. Carabba, L., Manzi, S., & Bignozzi, M. C. (2016). Superplasticizer addition to carbon fly ash geopolymers activated at room temperature. Materials, 9, 1–15.10.3390/ma9070586 ↗
4. Carabba, L., Manzi, S., Rambaldi, E., Ridolfi, G., & Bignozzi, M. C. (2017a). High-temperature behaviour of alkali-activated composites based on fly ash and recycled refractory particles. Journal of Ceramic Science and Technology, 8, 377–387.
5. Carabba, L., Santandrea, M., Carloni, C., Manzi, S., & Bignozzi, M. C. (2017b). Steel fiber reinforced geopolymer matrix (S-FRGM) composites applied to reinforced concrete structures for strengthening applications: a preliminary study. Composites Part B, Engineering, 128, 83–90.10.1016/j.compositesb.2017.07.007 ↗
6. Chen, X., Shi, D., Shen, N., Li, S., & Liu, S. (2019). Experimental study and analytical modelling on fatigue properties of pervious concrete made with natural and recycled aggregates. International Journal of Concrete Structures and Materials, 13, 10.10.1186/s40069-018-0305-0 ↗
7. Cui, Y., Wang, D., Wang, Y., Sun, R., & Rui, Y. (2019). Effects of the n(H2O: Na2Oeq) ratio on the geopolymerization process and microstructures of fly ash based geopolymers. Journal of Non Crystalline Solids, 511, 19–28.10.1016/j.jnoncrysol.2018.12.033 ↗
8. EN 1015-3. (2007). Determination of consistence of fresh mortars by flow table.
9. EN 196-1. (2016). Methods of testing cement - Part 1: determination of strength.
10. EN 772-13. (2002). Determination of net and gross dry density.
11. Fernandez-Jimenez, A., & Palomo, A. (2005). Composition and microstructure of alkali activated fly ash binder effect of the activator. Cement and Concrete Research, 35, 1984–1992.10.1016/j.cemconres.2005.03.003 ↗
12. Gayana, B. C., & Chandar, K. R. (2018). Sustainable use of mine waste and tailings with suitable admixture as aggregates in concrete pavements - A review. Advances in Concrete Construction, 6, 221–243.
13. Ha, T.-H., Muralidharan, S., Bae, J.-H., Ha, Y.-C., Lee, H.-G., Park, K. W., et al. (2005). Effect of unburnt carbon on the corrosion performance of fly ash cement mortar. Construction and Building Materials, 19, 509–515.10.1016/j.conbuildmat.2005.01.005 ↗
14. Hanif, A., Lu, Z., & Li, Z. (2017). Utilization of fly ash cenosphere as lightweight filler in cement-based composites - A review. Construction and Building Materials, 144, 373–384.10.1016/j.conbuildmat.2017.03.188 ↗
15. Hemalatha, T., & Ramaswamy, A. (2017). A review on fly ash characteristics - Towards promoting high volume utilization in developing sustainable concrete. Journal of Cleaner Production., 147, 546–559.10.1016/j.jclepro.2017.01.114 ↗
16. Hong, S., & Kim, H. (2019). Robust synthesis of coal bottom ash-based geopolymers using additional microwave heating and curing for high compressive strength properties. Korean Journal of Chemical Engineering, 36, 1164–1171.10.1007/s11814-019-0286-y ↗
17. Hwang, S. H., & Shahsavari, R. (2019). High calcium cementless fly ash binder with low environmental footprint: Optimum Taguchi design. Journal of American Ceramic Society, 102, 2203–2217.10.1111/jace.15873 ↗
18. Juenger, M. C. G., Snellings, R., & Bernal, S. A. (2019). Supplementary cementitious materials: new sources, characterization, and performance insights. Cement and Concrete Research, 122, 257–273.10.1016/j.cemconres.2019.05.008 ↗
19. Kang, N. H., Chon, C. M., Jou, H. T., & Lee, S. (2013). Effect of particle size and unburned carbon content of fly ash from Hadong power plant on compressive strength of geopolymers. Korean Journal of Materials Research, 23(9), 510–516.10.3740/MRSK.2013.23.9.510 ↗
20. Karim, M. R., Zain, M. F. M., Jamil, M., Lai, F. C., & Islam, M. N. (2011). Strength development of mortar and concrete containing fly ash: a review. International Journal of Physical Sciences, 6(17), 4137–4153.
21. Lee, S., Seo, M.-D., Kim, Y.-J., Park, H.-H., & Kim, T.-N. (2010). Unburned carbon removal effect on compressive strength development in a honeycomb briquette ash-based geopolymer. International Journal of Mineral processing, 97, 20–25.10.1016/j.minpro.2010.07.007 ↗
22. Leiva, C., Vilches, L. F., Vale, J., Olivares, J., & Fernandez-Pereira, C. (2008). Effect of carbonaceous matter contents on the fire resistance and mechanical properties of coal fly ash enriched mortars. Fuels, 87, 2977–2982.10.1016/j.fuel.2008.04.020 ↗
23. Manzi, S., & BignozziMazzotti, M. C. C. (2013). Short and long-term behavior of structural concrete with recycled concrete aggregate. Cement and Concrete Composites, 37, 312–318.10.1016/j.cemconcomp.2013.01.003 ↗
24. Manzi, S., Mazzotti, C., & Bignozzi, M. C. (2017). Self-compacting concrete with recycled concrete aggregate: Study of the long-term properties. Construction and Building Materials, 157, 582–590.10.1016/j.conbuildmat.2017.09.129 ↗
25. Matsuda, A., Maruyama, I., Meawad, A., Pareek, S., & Araki, Y. (2019). Reaction, phases, and microstructure of fly ash-based alkali-activated materials. Journal Advanced Concrete Technology, 17, 93–101.10.3151/jact.17.93 ↗
26. Mejía, J. M., Rodríguez, E., Mejía de Gutierrez, R., & Gallego, N. (2015). Preparation and characterization of a hybrid alkaline binder based on a fly ash with no commercial value. Journal of Cleaner Production, 104, 346–352.10.1016/j.jclepro.2015.05.044 ↗
27. Monticelli, C., Natali, M. E., Balbo, A., Chiavari, C., Zanotto, F., Manzi, S., et al. (2016). Corrosion behavior of steel in alkali-activated fly ash mortars in the light of their microstructural, mechanical and chemical characterization. Cement and Concrete Research, 80, 60–68.10.1016/j.cemconres.2015.11.001 ↗
28. Mustafa Al Bakri, A. M., Kamarudin, H., Bnhussain, M., Khairul, N. I., Rafiza, A. R., & Izzat, A. M. (2011). Chemical reactions in the geopolymerisation process using fly ash—based geopolymer: a review. Australian Journal of Basic and Applied Sciences, 5(7), 1199–1203.
29. Oderji, S. Y., Chen, B., Shakya, C., Ahmad, M. R., & Shah, S. F. A. (2019). Influence of superplasticizers and retarders on the workability and strength of one-part alkali-activated fly ash/slag binders cured at room temperature. Construction and Building Materials, 229, 116891.10.1016/j.conbuildmat.2019.116891 ↗
30. Saccani, A., Bignozzi, M., Barbieri, L., Lancellotti, I., & Bursi, E. (2017). Effect of the chemical composition of different types of recycled glass used as aggregates on the ASR performance of cement mortars. Construction Building Materials, 154, 804–809.10.1016/j.conbuildmat.2017.08.011 ↗
31. Saccani, A., Manzi, S., I., Lancellotti, L., & Barbieri, (2020). Manufacturing and durability of alkali activated mortars containing different types of glass waste as aggregates valorization. Construction and Building Materials, 237, 117733.10.1016/j.conbuildmat.2019.117733 ↗
32. Shearer, C. R., Provis, J. L., Bernal, S. A., & Kurtis, K. E. (2016). Alkali-activation potential of biomass-coal co-fired fly ash. Cement and Concrete Composites, 73, 62–74.10.1016/j.cemconcomp.2016.06.014 ↗
33. Tam, V. W. Y., Soomro, M., & Evangelista, A. (2018). A review of recycled aggregate in concrete applications (2000–2017). Construction and Building Materials, 172, 272–292.10.1016/j.conbuildmat.2018.03.240 ↗
34. Valencia-Saavedra, W., Mejìa de Gutiérrez, R., & Gordillo, M. (2018). Geopolymeric concretes based on fly ash with high-unburned content. Construction and Building Materials, 165, 697–706.10.1016/j.conbuildmat.2018.01.071 ↗
35. van Riessen, A., & Chen-Tan, N. (2013). Beneficiation of Collie fly ash for synthesis of geopolymer: Part 1 - Beneficiation. Fuel, 106, 569–575.10.1016/j.fuel.2012.11.070 ↗
36. Won, J.-H., & Kang, S.-G. (2015). Processing parameters affecting the nano scale-microstructure and mechanical strength of coal ash-based geopolymer. International Journal of Precision Engineering and Manufacturing, 16, 1335–1340.10.1007/s12541-015-0175-1 ↗
37. Yang, K., & Lee, K. (2019). Shear friction characteristics and modification factor of concrete prepared using expanded bottom ash and dredged soil granules. International Journal of Concrete Structures Materials, 13, 50.10.1186/s40069-019-0364-x ↗
38. Zhang, H., Li, L., Sarker, P. K., Long, T., Shi, X., Wang, Q., et al. (2019). Investigating various factors affecting the long-term compressive strength of heat-cured fly ash geopolymer concrete and the use of orthogonal experimental design method. International Journal Concrete Structures Materials, 13, 63.10.1186/s40069-019-0375-7 ↗