Title:
Accelerated Tests to Measure Efflorescence and Effect of Pozzolans
Author(s):
Diogo Henrique de Bem and Ronaldo A. Medeiros-Junior
Publication:
Materials Journal
Volume:
117
Issue:
5
Appears on pages(s):
113-124
Keywords:
accelerated test; efflorescence; fly ash; lime-cement mortar; silica fume
DOI:
10.14359/51724627
Date:
9/1/2020
Abstract:
No widely accepted method is available to assess the efflorescence in small-scale mortar specimens. Thus, the analysis and determination of parameters that actually have an influence on the occurrence of efflorescence in cementitious materials become difficult to be accomplished, especially considering that its appearance in natural field conditions can take months or even years to happen. This paper has the objective to compare eight small-scale accelerated test methods for the assessment of efflorescence in lime-cement mortars and then to evaluate their sensibility to variations in the mixture composition. The results show that the method in which a water column introduces pressure produced the highest amount of efflorescence in the smallest time. The method was able to clearly identify the impact of silica fume towards the refinement of the porous microstructure and the efflorescence reduction. This study demonstrates that 28 days is enough time to finalize the accelerated testing proposed.
Related References:
1. Dorea, L.; Sales, A.; and Silveira, P., “Pathological Evaluation of Reinforced Concrete Structure and Components of a 1914 Building (in Portuguese: Avaliação patológicas da estrutura de concreto armado e dos componentes de uma edificação de 1914),” Scientia Plena, V. 6, No 12, 2010, pp. 1-13, https://www.scientiaplena.org.br/sp/article/view/317. (last accessed Oct. 22, 2020)
2. Lourenço, P. B.; Luso, E.; and Almeida, M. G., “Defects and Moisture Problems in Building from Historical City Centers: A Case Study in Portugal,” Building and Environment, V. 41, No. 2, 2006, pp. 223-234. doi: 10.1016/j.buildenv.2005.01.001
3. ASTM C67-92a, “Standard Test Methods of Sampling and Testing Brick and Structural Clay Tile,” ASTM International, West Conshohocken, PA, 1992.
4. Aberle, T.; Keller, A.; and Zurbriggen, R., “Efflorescence. Mechanisms of Formation and Ways to Prevent,” 2nd National Congress of Mortars for Construction, Lisboa, Portugal, 2007, http://www.apfac.pt/congresso2007/comunicacoes/Paper%2001_07.pdf (last accessed Oct. 22, 2020)
5. Ritchie, T., “Study of Efflorescence Produced on Ceramic Wicks by Masonry Mortar,” Journal of the American Ceramic Society, V. 38, No. 10, 1955, pp. 362-366. doi: 10.1111/j.1151-2916.1955.tb14556.x
6. Wei, O., and Sutan, N., “The Influence of Finely Ground Mineral Admixture (FGMA) on Efflorescence,” USIMAS Journal of Civil Engineering, V. 4, 2013, pp. 50-55. doi: 10.33736/jcest.108.2013
7. Weng, T.; Lin, W.; and Cheng, A., “Effect of Metakaolin on Strength and Efflorescence Quantity of Cement-Based Composites,” The Scientific World Journal, V. 2013, No. 1, 2013, pp. 1-11. doi: 10.1155/2013/606524
8. Quarcioni, A.; Chotoli, F. E.; and Aleixo, D., “Accelerated Test to Simulate the Formation of Efflorescence in Hardened Mortar (in Portuguese: Ensaio acelerado para simular a formação de eflorescência em argamassas endurecidas),” V Brazilian Symposium on Mortar Technology, São Paulo, Brazil, 2003.
9. Bezerra, A. P.; Barboza, J. S.; Paiva, T. F.; Ferreira, T. S.; and Ribeiro, I. J., “Efflorescence Test Based on the Standard ASTM C67-92a (in Portuguese: Ensaio de Eflorescência baseado na norma da ASTM C67-92ª),” VII North-Northeast Congress of Research and Innovation, Maceio, Brazil, 2012, http://propi.ifto.edu.br/ocs/index.php/connepi/vii/paper/view/871/2109. (last accessed Oct. 22, 2020)
10. Hennetier, J.; Almeida, J. V.; Correia, A. M. S.; and Ferreira, V. M., “Efflorescence and Its Quantification in Ceramic Building Materials,” British Ceramic Transactions, V. 100, No. 2, 2001, pp. 72-76. doi: 10.1179/096797801681233
11. Pernicová, R., “The Susceptibility of Forming Efflorescence on Concrete Depending on the Mold-Releasing Agent,” 2nd International Conference of Advanced Materials, Mechanical and Structural Engineering, South Korea, 2015, pp. 151-154.
12. Yao, X.; Yang, T.; and Zhang, Z., “Compressive Strength Development and Shrinkage of Alkali-Activated Fly Ash-Slag Blends Associated with Efflorescence,” Materials and Structures, V. 49, No. 7, 2016, pp. 2907-2918. doi: 10.1617/s11527-015-0694-3
13. Najafi Kani, E.; Allahverdi, A.; and Provis, J., “Efflorescence Control in Geopolymer Binders Based on Natural Pozzolan,” Cement and Concrete Composites, V. 34, No. 1, 2012, pp. 25-33. doi: 10.1016/j.cemconcomp.2011.07.007
14. Kang, S., and Kwon, S., “Effect of Red Mud and Alkali-Activated Slag Cement on Efflorescence in Cement Mortar,” Construction and Building Materials, V. 133, 2017, pp. 459-467. doi: 10.1016/j.conbuildmat.2016.12.123
15. Xue, B., and Qian, C., “Mitigation of Efflorescence of Wallboard by Means of Bio-Mineralization,” Frontiers in Microbiology, V. 20, 2015, pp. 1-7. doi: 10.3389/fmicb.2015.01155.10.3389/fmicb.2015.01155
16. Vazquez, M.; Galan, E.; Guerrero, M. A.; and Ortiz, P., “Digital Image Processing of Weathered Stone Caused by Efflorescence: A Tool for Mapping and Evaluation of Stone Decay,” Construction and Building Materials, V. 25, No. 4, 2011, pp. 1603-1611. doi: 10.1016/j.conbuildmat.2010.10.003
17. Ferreira, C., and Bergmann, C., “Transport of Ca2+ and SO4 Ions in Porous Media of Clay Product and Its Association with the Efflorescence Phenomenon,” Transport in Porous Media, V. 85, No. 3, 2010, pp. 905-917. doi: 10.1007/s11242-010-9598-4
18. Delair, S.; Guyonnet, R.; Govin, A.; and Guilhot, B., “Study of Efflorescence Forming Process on Cementitious Materials,” 5th International Conference on Concrete under Severe Conditions of Environmental Loading, France, 2007, pp. 633-640, https://hal.archives-ouvertes.fr/hal-00619220/document, (last accessed Oct. 22, 2020)
19. Gruber, K. A.; Ramlochan, T.; Boddy, A.; Hooton, R. D.; and Thomas, M. D. A., “Increasing Concrete Durability with High-Reactivity Metakaolin,” Cement and Concrete Composites, V. 23, No. 6, 2001, pp. 479-484. doi: 10.1016/S0958-9465(00)00097-4
20. Khater, H., “Influence of Metakaolin on Resistivity of Cement Mortar to Magnesium Chloride Solution,” Journal of Materials in Civil Engineering, ASCE, V. 23, 2011, doi: 10.1061/(ASCE)MT.1943-5533.0000294.10.1061/(ASCE)MT.1943-5533.0000294
21. Antoni, M.; Rossen, J.; Martirena, F.; and Scrivener, K., “Cement Substitution by a Combination of Metakaolin and Limestone,” Cement and Concrete Research, V. 42, No. 12, 2012, pp. 1579-1589. doi: 10.1016/j.cemconres.2012.09.006
22. Saito, H., and Deguchi, A., “Leaching Tests on Different Mortars Using Accelerated Electromechanical Method,” Cement and Concrete Research, V. 30, No. 11, 2000, pp. 1815-1825. doi: 10.1016/S0008-8846(00)00377-X
23. Trnik, A.; Scheinherrova, L.; and Cerny, R., “Influence of Silica Fume on the Hydration of Cement Pastes Studied by Simultaneous TG-DSC Analysis,” International Journal of Civil and Environmental Engineering, V. 11, No. 8, 2017.
24. Dojkov, I.; Stayanov, S.; Ninov, J.; and Petrov, B., “On the Consumption of Lime by Metakaolin, Fly Ash and Kaoline in Model Systems,” Journal of Chemical Technology and Metallurgy, V. 48, 2013, pp. 54-60.
25. Medeiros, M.; Raisdorfer, J. W.; Hoppe, J.; and Medeiros-Junior, R. A.; “Partial Replacement and Addition of Fly Ash in Portland Cement: Influence on Carbonation and Alkali Reserve,” Journal of Building Pathology and Rehabilitation, V. 2, No. 4, 2017, https://doi.org/10.1007/s41024-017-0023-z.10.1007/s41024-017-0023-z
26. Weng, J.; Langan, B. W.; and Ward, M. A., “Pozzolanic Reaction in Portland Cement, Silica Fume and Fly Ash Mixtures,” Canadian Journal of Civil Engineering, V. 24, No. 5, 1997, pp. 754-760. doi: 10.1139/l97-025
27. Lam, L.; Wong, Y.; and Poon, C., “Degree of Hydration and Gel/Space Ratio of High-Volume Fly Ash/Cement Systems,” Cement and Concrete Research, V. 30, No. 5, 2000, pp. 747-756. doi: 10.1016/S0008-8846(00)00213-1
28. Baert, G.; Hoste, S.; De Schutter, G.; and Belie, N., “Reactivity of Fly Ash in Cement Paste Studied by Means of Thermogravimetry and Isothermal Calorimetry,” Journal of Thermal Analysis and Calorimetry, V. 94, No. 2, 2008, pp. 485-492. doi: 10.1007/s10973-007-8787-z
29. Deschner, F.; Winnefeld, F.; Lothenbach, B.; Seufert, S.; Schwesig, P.; Dittrich, S.; Goetz-Neunhoeffer, F.; and Neubauer, J., “Hydration of Portland Cement with High Replacement by Siliceous Fly Ash,” Cement and Concrete Research, V. 42, No. 10, 2012, pp. 1389-1400. doi: 10.1016/j.cemconres.2012.06.009
30. Fraay, A.; Bijen, J. M.; and de Haan, Y. M., “The Reaction of Fly Ash in Concrete a Critical Examination,” Cement and Concrete Research, V. 19, No. 2, 1989, pp. 235-246. doi: 10.1016/0008-8846(89)90088-4
31. NBR 13276, “Mortar for Laying and Coating of Walls and Ceilings—Determination of Consistency Index (in Portuguese: Argamassa para assentamento e revestimento de paredes e tetos - determinação do índice de consistência),” Brazilian Association of Technical Standards – ABNT, Brazil, 2016.
32. Jang, H.; Kang, H.; and So, S., “Colour Expression Characteristics and Physical Properties of Colored Mortar Using Ground Granulated Blast Furnace Slag and White Portland Cement,” KSCE Journal of Civil Engineering, V. 18, No. 4, 2014, pp. 1125-1132. doi: 10.1007/s12205-014-0452-z
33. NBR 7215, “Portland Cement - Compressive Strength Determination (in Portuguese: Cimento Portland - Determinação da resistência à compressão),” Brazilian Association of Technical Standards – ABNT, Brazil, 1997.
34. NBR 13279. “Mortar for Laying and Coating of Walls and Ceilings - Determination of Tensile Strength in Flexion and Compression (in Portuguese: Argamassa para assentamento e revestimento de paredes e tetos - determinação da resistência à tração na flexão e à compressão),” Brazilian Association of Technical Standards – ABNT, Brazil, 2005.
35. Helene, P., and Pereira, F., “Rehabilitation and Maintenance of Concrete Structures (in Spanish: Rehabilitación y Mantenimiento de Estruturas de Concreto),” Sika, São Paulo, Brazil, 2007.
36. NBR 9779, “Hardened Concrete and Mortar - Capilary Water Absorption Determination (in Portuguese: Argamassa e concreto endurecido - Determinação da absorção de água por capilaridade),” Brazilian Association of Technical Standards – ABNT, Brazil, 2012.
37. Mehta, P. K., and Monteiro, P. J. M., Concrete: Structures, Properties and Materials, third edition, São Paulo, Brazil, 2014.
38. Mounanga, P.; Khelidj, A.; Loukili, A.; and Baroghel-Bouny, V., “Predicting Ca(OH)2 Content and Chemical Shrinkage of Hydrating Cement Pastes Using Analytical Approach,” Cement and Concrete Research, V. 34, No. 2, 2004, pp. 255-265. doi: 10.1016/j.cemconres.2003.07.006
39. Mills, I.; Cvitas, T.; Klaus, H.; Kallay, N.; and Kuchitsu, K., “Quantities, Units and Symbols in Physical Chemistry,” IUPAC, Blackwell Science, second edition, Oxford, UK, 1993.
40. Dow, C., and Glasser, F., “Calcium Carbonate Efflorescence on Portland Cement and Building Materials,” Cement and Concrete Research, V. 33, No. 1, 2003, pp. 147-154. doi: 10.1016/S0008-8846(02)00937-7
41. Teylor, H. F. W., Cement Chemistry, second edition, Thomas Telford, London, UK, 1997, 459 pp.
42. Aphane, M., E., “The Hydration of Magnesium Oxide with Different Reactivities by Water and Magnesium Acetate,” master’s dissertation, South Africa University, Cape Town, South Africa, 2007.
43. Poon, C. S.; Kou, S. C.; and Lam, L., “Compressive Strength Chloride Diffusivity and Pore Structure of High-Performance Metakaolin and Silica Fume Concrete,” Construction and Building Materials, V. 20, No. 10, 2006, pp. 858-865. doi: 10.1016/j.conbuildmat.2005.07.001
44. Gleize, P. J. P.; Muller, A.; and Roman, H. R., “Microstructural Investigation of a Silica Fume-Cement-Lime Mortar,” Cement and Concrete Composites, V. 25, No. 2, 2003, pp. 171-175. doi: 10.1016/S0958-9465(02)00006-9
45. Bicer, A., “Effect of Fly Ash Particle Size on Thermal and Mechanical Properties of Fly-Ash-Cement Composites,” Thermal Science and Engineering Progress, V. 8, 2018, pp. 78-82. doi: 10.1016/j.tsep.2018.07.014
46. de Medeiros, M. H. F.; Dranka, F.; Souza, D. J.; and Medeiros-Junior, R. A., “Improvement of Repair Mortars Using Multi-Walled Carbon Nanotubes,” Proceedings of Institution of Civil Engineers: Construction Materials, V. 172, No. 2, 2019, pp. 71-84. doi: 10.1680/jcoma.16.00049
47. Wang, A.; Zhang, C.; and Sun, W., “Fly Ash Effects II. The Active Effect of Fly Ash,” Cement and Concrete Research, V. 34, No. 11, 2004, pp. 2057-2060. doi: 10.1016/j.cemconres.2003.03.001
48. Medeiros-Junior, R. A., “Impact of Climate Change on the Service Life of Concrete Structures,” F. Pacheco-Torgal, R. Melchers, N. de Belie, X. Shi, K. Van Tittelboom, and A. S. Perez, eds., Eco-efficient Repair and Rehabilitation of Concrete Infrastructures, first edition, Elsevier - Woodhead Publishing, 2018, pp. 43-68. doi: 10.1016/B978-0-08-102181-1.00003-4.10.1016/B978-0-08-102181-1.00003-4
49. Esteves, I. C. A.; Medeiros-Junior, R. A.; and Medeiros, M. H. F., “NDT for Bridges Durability Assessment on Urban-Industrial Environment in Brazil,” International Journal of Building Pathology and Adaptation, V. 36, No. 5, 2018, pp. 500-515. doi: 10.1108/IJBPA-04-2018-0032