Valorization of brick waste by alkali-activation: A study on the possible use for masonry repointing
Source abstract
Abstract
Abstract Alkali-activation of brick waste has recently been proposed as a sustainable route to develop pastes/mortars with tailored mechanical properties and pore system. In this study, the suitability of using pastes from brick waste alkali-activation for repointing existing masonries (i.e., filling the most external part of mortar joints, lost due to deterioration processes) was investigated. Five different formulations (having SiO 2 /Al 2 O 3 molar ratio ranging from 1.4 to 0.4) and two different curing temperatures (room temperature and 50 °C) were investigated. Open porosity and efflorescence formation were found to decrease for decreasing SiO 2 /Al 2 O 3 ratio. Curing at high temperature generally favored geopolymerization and reduced efflorescence formation. Pastes with SiO 2 /Al 2 O 3 =0.8 and 0.9 exhibited open porosity and water vapor permeability fairly similar to those of historic lime-based mortars, thus proving to be potentially compatible with them. Further optimization of the mix design seems however necessary to reduce the formation of efflorescence.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Recycling and utilization of industrial and municipal waste in materials production · Building materials and conservation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (53)
Show source-provided references
1. J. Davidovits, Geopolymers: inorganic polymeric new materials, J. Therm. Anal. 37 (1991) 1633–1656. 269 (2005) 47–58.
2. Micromechanical characterization of metakaolin-based geopolymers10.1016/j.conbuildmat.2013.08.081 ↗
3. Geopolymer technology: the current state of the art10.1007/s10853-006-0637-z ↗
4. Influence of metakaolin characteristics on the mechanical properties of geopolymers10.1016/j.clay.2013.08.023 ↗
5. Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer10.1016/j.conbuildmat.2009.12.023 ↗
6. The role of inorganic polymer technology in the development of ‘Green Concrete’10.1016/j.cemconres.2007.08.018 ↗
7. Alkali-activated binders: a review - Part 1. Historical background, terminology, reaction mechanisms and hydration products10.1016/j.conbuildmat.2007.10.015 ↗
8. Ceramic wastes as alternative raw materials for Portland cement clinker production10.1016/j.cemconcomp.2008.06.003 ↗
9. Clinkers and cements obtained from raw mix containing ceramic waste as a raw material characterization, hydration and leaching studies10.1016/j.cemconcomp.2009.11.011 ↗
10. Mix-design and characterization of alkali activated materials based on metakaolin and ladle slag10.1016/j.clay.2012.09.015 ↗
11. High temperature behaviour of ambient cured alkali-activated materials based on ladle slag10.1016/j.cemconres.2012.09.011 ↗
12. Mechanical activation of fly ash: effect on reaction, structure and properties of resulting geopolymer10.1016/j.ceramint.2010.09.038 ↗
13. Room temperature alkali activation of fly ash: the effect of NaO/SiO2 ratio10.1016/j.conbuildmat.2014.07.062 ↗
14. Geopolymers: an option for the valorization of incinerator bottom ash derived “end of waste”10.1016/j.ceramint.2014.10.008 ↗
15. A. Pereira, J.L. Akasaki, J.L.P. Melges, M.M. Tashima, L. Soriano, M.V. Borrachero, J. Monzó, J. Payá, Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag, Ceram Int, http://dx.doi.org/10.1016/j.ceramint.2015.07.00110.1016/j.ceramint.2015.07.001 ↗
16. Incinerator bottom ash and ladle slag for geopolymers preparation10.1007/s12649-014-9299-2 ↗
17. Physical-mechanical and microstructural properties of alkali-activated fly ash-blast furnace slag blends10.1016/j.ceramint.2014.09.075 ↗
18. Alkali activation of mortars containing different replacement levels of ground granulated blast furnace slag10.1016/j.conbuildmat.2011.10.018 ↗
19. Microstructure, strength, and moisture stability of alkali activated glass powder-based binders10.1016/j.cemconcomp.2013.09.011 ↗
20. Synthesis and thermal behavior of geopolymer-type material from waste ceramic10.1016/j.conbuildmat.2013.08.063 ↗
21. Alkaline activation of ceramic waste materials10.1007/s12649-013-9197-z ↗
22. Properties and microstructure of alkali-activated red clay brick waste10.1016/j.conbuildmat.2013.01.031 ↗
23. A new geopolymeric binder from hydrated-carbonated cement10.1016/j.matlet.2012.01.132 ↗
24. Ceramic waste as new precursors for geopolymerization10.4028/www.scientific.net/AST.92.26 ↗
25. Experimental investigation on related properties of asphalt mastic containing recycled red brick powder10.1016/j.conbuildmat.2010.12.040 ↗
26. Concrete with recycled concrete aggregate and crushed clay bricks10.1016/j.conbuildmat.2010.11.063 ↗
27. Mechanical, microstructure and rheological characteristics of high performance self-compacting cement pastes and concrete containing ground clay bricks10.1016/j.conbuildmat.2012.07.114 ↗
28. Paving blocks made with recycled concrete aggregate and crushed clay brick10.1016/j.conbuildmat.2005.01.044 ↗
29. Pore size distribution and compressive strength of waste clay brick mortar10.1016/S0958-9465(00)00070-6 ↗
30. Use of waste brick as a partial replacement of cement in mortar10.1016/j.wasman.2009.03.026 ↗
31. Comparison between experimental methods for evaluating the compressive strength of existing masonry buildings10.1016/j.conbuildmat.2014.06.070 ↗
32. Introduction to requirements for and functions and properties of repair mortars10.1007/BF02479291 ↗
33. E. Franzoni, The role of mortars in ancient brick masonries’ decay: a study in the Pio Palace at Carpi (Italy), in: J. Válek, C. Groot and J.J. Hughes (Eds), (“2nd Historic Mortars Conference HMC2010 and RILEM TC 203-RHM Final Workshop”, 22–24 September) 2010, Prague, Czech Republic, 483–490 (CD) (RILEM Proceedings PRO 78)
34. Materials decay and environmental attack in the Pio Palace at Carpi: a holistic approach for historical architectural surfaces conservation10.1016/j.buildenv.2006.04.021 ↗
35. Characterization procedure for ancient mortars’ restoration: The plasters of the Cavallerizza courtyard in the Ducal Palace in Mantua (Italy)10.1016/j.matchar.2009.10.012 ↗
36. Properties of lime-metakaolin mortars for the restoration of historic masonries10.1016/j.clay.2011.04.005 ↗
37. Optimization of compatible restoration mortars for the earthquake protection of Hagia Sophia10.1016/j.culher.2013.01.008 ↗
38. Advanced Byzantine cement based composites resisting earthquake stresses: the crushed brick/lime mortars of Justinian’s Hagia Sophia10.1016/S0950-0618(02)00005-3 ↗
39. A. Buchwald, C. Kaps, M. Hohmann, Alkali-activated binders and pozzolan cement binders- Compete binder reaction or two sides of the same story?, in: Proceedings XI International Congress of Cement Chemistry (ICC), 2003, 1238–1246
40. Lime activated fly ash paste in the presence of metakaolin10.1016/j.proeng.2014.12.200 ↗
41. Reinforcement of the terracotta sculpture by geopolymer composite10.1016/j.matdes.2008.12.015 ↗
42. Geopolymers as potential repair material in tiles conservation10.1007/s00339-016-9709-3 ↗
43. S. Tamburini, M. Favaro, A. Magro, E. Garbin, M. Panizza, F. Nardon, M.R. Valluzzi, Geopolymers as strengthening materials for Built Heritage, in: M. Boriani et al. (Eds.) Proceedings of Built Heritage 2013 – Monitoring Conservation Management, Milan (IT) 18–20 November 2013, p. 1304–1311
44. Alkaline treatment of clay minerals from the Alhambra Formation: implications for the conservation of earthen architecture10.1016/j.clay.2007.05.003 ↗
45. Mechano-chemical activation: an ecological safety process in the production of materials to stone conservation10.1016/j.proeng.2011.11.2112 ↗
46. An innovative phosphate-based consolidant for limestone. Part 1: effectiveness and compatibility in comparison with ethyl silicate10.1016/j.conbuildmat.2015.04.026 ↗
47. An innovative phosphate-based consolidant for limestone. Part 2: durability in comparison with ethyl silicate10.1016/j.conbuildmat.2015.10.202 ↗
48. Rising damp removal from historical masonries: a still open challenge10.1016/j.conbuildmat.2013.12.054 ↗
49. Efflorescence control in geopolymer binders based on natural pozzolan10.1016/j.cemconcomp.2011.07.007 ↗
50. European Standard 1015-19, Methods of test for mortar for masonry - Part 19. Determination of water vapour permeability of hardened rendering and plastering mortars, 1998
51. The composition range of aluminosilicate geopolymers10.1016/j.jeurceramsoc.2004.06.001 ↗
52. A. Moropoulou, A. Bakolas, Range of applicability limits of physical, chemical and mechanical characteristics deriving from the evaluation of historic mortars, in: G. Biscontin et al. (Eds.), Compatible materials for the protection of European cultural heritage, 1998, 165–178.
53. European Standard EN 998–1, Specification for mortar for masonry - Part 1: Rendering and plastering mortar, 2010