Title:
Effect of Polyphosphates on Properties of Alkali-Activated Slag/Fly Ash Concrete
Author(s):
Youssef A. Mosleh, Mahmoud Gharieb, and Alaa M. Rashad
Publication:
Materials Journal
Volume:
120
Issue:
2
Appears on pages(s):
65-75
Keywords:
alkali-activated slag/fly ash concrete; hardened properties; microstructure; sodium hexametaphosphate (SHMP); sodium tripolyphosphate (STPP); workability
DOI:
10.14359/51738460
Date:
3/1/2023
Abstract:
Polyphosphate materials such as sodium tripolyphosphate (STPP) and sodium hexametaphosphate (SHMP) are usually used as a dispersion agent for the ceramic industry, auxiliary materials in high-range water-reducing admixtures, and retarders in traditional cement systems. Until now, however, no comprehensive study has been performed on the effect of STPP or SHMP on the properties of alkali-activated materials (AAMs). Thus, in this paper, the effect of different concentrations (2 to 8 wt. %) of STPP and SHMP on the properties of alkali-activated slag/fly ash concrete was investigated. The variations in workability, compressive strength, water absorption, and total porosity with the incorporation of either STPP or SHMP at levels of 2, 4, 6, and 8%, by weight, were conducted. Modern techniques were employed to investigate the crystalline phases and microstructure morphologies. The primary results
showed that both STPP and SHMP can increase workability. Each type of polyphosphate showed a positive effect on the compressive strength, but 4% was the optimum concentration. Both water absorption and total porosity were reduced with the incorporation of each type of polyphosphate, but 4% was the optimum. The incorporation of a suitable concentration of each type of polyphosphate can enhance the dispersion and deagglomeration of the particles and refine the microstructure.
Related References:
1. Hilburg, J., “Concrete Production Produces Eight Percent of the World’s Carbon Dioxide Emissions,” The Architect’s Newspaper, Jan. 2, 2019, https://www.archpaper.com/2019/01/concrete-production-eight-percent-co2-emissions/. (last accessed Feb. 13, 2023)
2. U.S. Geological Survey, “Mineral Commodity Summaries: 2012,” Reston, VA, 2012.
3. U.S. Geological Survey, “USGS: Reston,” Reston, VA, 2021, 200 pp.
4. Zhongming Z.; Linong, L.; Xiaona, Y.; Wangqiang, Z.; and Wei, L., “Cement Technology Roadmap Shows How the Path to Achieve CO2 Reductions Up to 24% by 2050,” International Energy Agency, Paris, France, Apr. 6, 2018, https://www.iea.org/news/cement-technology-roadmap-plots-path-to-cutting-co2-emissions-24-by-2050. (last accessed Feb. 13, 2023)
5. Abriyantoro, D.; Dong, J.; Hicks, C.; and Singh, S. P., “A Stochastic Optimisation Model for Biomass Outsourcing in the Cement Manufacturing Industry with Production Planning Constraints,” Energy, V. 169, 2019, pp. 515-526. doi: 10.1016/j.energy.2018.11.114
6. Rashad, A. M., “An Overview on Rheology, Mechanical Properties and Durability of High-Volume Slag Used as a Cement Replacement in Paste, Mortar and Concrete,” Construction and Building Materials, V. 187, 2018, pp. 89-117. doi: 10.1016/j.conbuildmat.2018.07.150
7. Rashad, A. M., “Metakaolin: Fresh Properties and Optimum Content for Mechanical Strength in Traditional Cementitious Materials—A Comprehensive Overview,” Reviews on Advanced Materials Science, V. 40, No. 1, 2015, pp. 15-44.
8. Rashad, A. M., “A Brief on High-Volume Class F Fly Ash as Cement Replacement—A Guide for Civil Engineer,” International Journal of Sustainable Built Environment, V. 4, No. 2, 2015, pp. 278-306. doi: 10.1016/j.ijsbe.2015.10.002
9. Rashad, A. M., “A Comprehensive Overview about the Influence of Different Admixtures and Additives on the Properties of Alkali-Activated Fly Ash,” Materials & Design, V. 53, 2014, pp. 1005-1025. doi: 10.1016/j.matdes.2013.07.074
10. Rashad, A. M., “Alkali-Activated Metakaolin: A Short Guide for Civil Engineer—An Overview,” Construction and Building Materials, V. 41, 2013, pp. 751-765. doi: 10.1016/j.conbuildmat.2012.12.030
11. Rashad, A. M., “A Comprehensive Overview about the Influence of Different Additives on the Properties of Alkali-Activated Slag—A Guide for Civil Engineer,” Construction and Building Materials, V. 47, 2013, pp. 29-55. doi: 10.1016/j.conbuildmat.2013.04.011
12. John, S. K.; Nadir, Y.; and Girija, K., “Effect of Source Materials, Additives on the Mechanical Properties and Durability of Fly Ash and Fly Ash-Slag Geopolymer Mortar: A Review,” Construction and Building Materials, V. 280, 2021, Article No. 122443. doi: 10.1016/j.conbuildmat.2021.122443
13. Shi, C.; Roy, D.; and Krivenko, P. V., Alkali-Activated Cements and Concretes, CRC Press, Boca Raton, FL, 2003.
14. Rashad, A. M., “Effect of Quartz-Powder on the Properties of Conventional Cementitious Materials and Geopolymers,” Materials Science and Technology, V. 34, No. 17, 2018, pp. 2043-2056. doi: 10.1080/02670836.2018.1471435
15. Rashad, A. M., “The Effect of Polypropylene, Polyvinyl-Alcohol, Carbon and Glass Fibres on Geopolymers Properties,” Materials Science and Technology, V. 35, No. 2, 2019, pp. 127-146. doi: 10.1080/02670836.2018.1514096
16. Rashad, A. M., “Effect of Steel Fibers on Geopolymer Properties—The Best Synopsis for Civil Engineer,” Construction and Building Materials, V. 246, 2020, Article No. 118534. doi: 10.1016/j.conbuildmat.2020.118534
17. Ranjbar, N., and Zhang, M., “Fiber-Reinforced Geopolymer Composites: A Review,” Cement and Concrete Composites, V. 107, 2020, Article No. 103498. doi: 10.1016/j.cemconcomp.2019.103498
18. Rashad, A. M., “Effect of Nanoparticles on the Properties of Geopolymer Materials,” Magazine of Concrete Research, V. 71, No. 24, 2019, pp. 1283-1301. doi: 10.1680/jmacr.18.00289
19. Li, Z.; Fei, M.-E.; Huyan, C.; and Shi, X., “Nano-Engineered, Fly Ash-Based Geopolymer Composites: An Overview,” Resources, Conservation and Recycling, V. 168, 2021, Article No. 105334. doi: 10.1016/j.resconrec.2020.105334
20. Tong, S.; Yuqi, Z.; and Qiang, W., “Recent Advances in Chemical Admixtures for Improving the Workability of Alkali-Activated Slag-Based Material Systems,” Construction and Building Materials, V. 272, Feb. 2021, Article No. 121647. doi: 10.1016/j.conbuildmat.2020.121647
21. Schrödter, K.; Bettermann, G.; Staffel, T.; Wahl, F.; Klein, T.; and Hofmann, T., “Phosphoric Acid and Phosphates,” Ullmann’s Encyclopedia of Industrial Chemistry, Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 2000.
22. Papo, A.; Piani, L.; and Ricceri, R., “Sodium Tripolyphosphate and Polyphosphate as Dispersing Agents for Kaolin Suspensions: Rheological Characterization,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, V. 201, No. 1-3, 2002, pp. 219-230. doi: 10.1016/S0927-7757(01)01024-X
23. Slyusar, A. A.; Slyusar, O. A.; and Zdorenko, N. M., “Rheological Properties and Critical Structure-Forming Concentration of Kaolin Suspensions with Complex Additives,” Glass and Ceramics, V. 65, No. 7-8, 2008, pp. 285-286.
24. Goberis, S., and Stonis, R., “Advantageous Features of Sodium Silicate as the Plasticizer for Low-Cement Refractory Castables,” Refractories and Industrial Ceramics, V. 45, No. 6, 2004, pp. 446-449. doi: 10.1007/s11148-005-0031-4
25. Goberis, S.; Pundene, I.; and Antonovich, V., “The Effect of Sodium Tripolyphosphate on the Properties of Medium-Cement Refractory Castables Based on Gorkal-40 Cement,” Refractories and Industrial Ceramics, V. 46, No. 6, 2005, pp. 403-408. doi: 10.1007/s11148-006-0035-8
26. Ltifi, M.; Guefrech, A.; and Mounanga, P., “Effects of Sodium Tripolyphosphate Addition on Early-Age Physico-Chemical Properties of Cement Pastes,” Procedia Engineering, V. 10, 2011, pp. 1457-1462. doi: 10.1016/j.proeng.2011.04.242
27. Ltifi, M.; Guefrech, A.; and Mounanga, P., “Effects of Sodium Tripolyphosphate on the Rheology and Hydration Rate of Portland Cement Pastes,” Advances in Cement Research, V. 24, No. 6, 2012, pp. 325-335. doi: 10.1680/adcr.11.00028
28. Tan, H.; Ma, B.; Li, X.; Jian, S.; and Yang, H., “Effect of Competitive Adsorption between Sodium Tripolyphosphate and Naphthalene Superplasticizer on Fluidity of Cement Paste,” Journal of Wuhan University of Technology-Materials Science Edition, V. 29, No. 2, 2014, pp. 334-340. doi: 10.1007/s11595-014-0917-4
29. Tan, H.; Zou, F.; Ma, B.; Liu, M.; Li, X.; and Jian, S., “Effect of Sodium Tripolyphosphate on Adsorbing Behavior of Polycarboxylate Superplasticizer,” Construction and Building Materials, V. 126, 2016, pp. 617-623. doi: 10.1016/j.conbuildmat.2016.09.077
30. Tan, H.; Zou, F.; Liu, M.; Ma, B.; Guo, Y.; and Jian, S., “Effect of the Adsorbing Behavior of Phosphate Retarders on Hydration of Cement Paste,” Journal of Materials in Civil Engineering, ASCE, V. 29, No. 9, 2017, p. 04017088. doi: 10.1061/(ASCE)MT.1943-5533.0001929
31. Hall, D. A.; Stevens, R.; and El-Jazairi, B., “The Effect of Retarders on the Microstructure and Mechanical Properties of Magnesia-Phosphate Cement Mortar,” Cement and Concrete Research, V. 31, No. 3, 2001, pp. 455-465. doi: 10.1016/S0008-8846(00)00501-9
32. Fan, S., and Chen, B., “Experimental Study of Phosphate Salts Influencing Properties of Magnesium Phosphate Cement,” Construction and Building Materials, V. 65, 2014, pp. 480-486. doi: 10.1016/j.conbuildmat.2014.05.021
33. Tan, H.; Deng, X.; Gu, B.; Ma, B.; Luo, S.; Zhi, Z.; Guo, Y.; and Zou, F., “Effect of Borax and Sodium Tripolyphosphate on Fluidity of Gypsum Paste Plasticized by Polycarboxylate Superplasticizer,” Construction and Building Materials, V. 176, 2018, pp. 394-402. doi: 10.1016/j.conbuildmat.2018.05.005
34. Wang, N.; Yin, X.; Zhang, J.; Gao, H.; Diao, X.; and Yao, H., “Preparation and Anti-Corrosive Properties of Waterborne Epoxy Composite Coating Containing Graphene Oxide Grafted with Sodium Tripolyphosphate,” Coatings, V. 10, No. 4, 2020, Article No. 307. doi: 10.3390/coatings10040307
35. Paulson, B. M.; Joby Thomas, K.; Raphael, V. P.; Shaju, K.; and Ragi, K., “Mitigation of Concrete Reinforced Steel Corrosion by Penta Sodium Triphosphate: Physicochemical and Electrochemical Investigations,” SN Applied Sciences, V. 2, No. 11, 2020, Article No. 1813. doi: 10.1007/s42452-020-03586-1
36. Zhang, Y.; Liu, H.; Liu, J.; and Tong, R., “Effect of Sodium Hexametaphosphate and Trisodium Phosphate on Dispersion of Polycarboxylate Superplasticizer,” Materials (Basel), V. 12, No. 24, 2019, Article No. 4190. doi: 10.3390/ma12244190
37. Palou, M.; Kuzielová, E.; Žemlička, M.; and Živica, V., “The Influence of Sodium Hexametaphosphate (Na6P6O18) on Hydration of Calcium Aluminate Cement under Hydrothermal Condition,” Procedia Engineering, V. 151, 2016, pp. 119-126. doi: 10.1016/j.proeng.2016.07.371
38. Cheng, B.; Yao, C.; Xiong, J.; Liu, X.; Zhang, H.; and Zhang, S., “Effects of Sodium Hexametaphosphate Addition on the Dispersion and Hydration of Pure Calcium Aluminate Cement,” Materials (Basel), V. 13, No. 22, 2020, Article No. 5229. doi: 10.3390/ma13225229
39. Zhang, T.; Vandeperre, L. J.; and Cheeseman, C. R., “Formation of Magnesium Silicate Hydrate (M-S-H) Cement Pastes Using Sodium Hexametaphosphate,” Cement and Concrete Research, V. 65, 2014, pp. 8-14. doi: 10.1016/j.cemconres.2014.07.001
40. Vitali, S., and Giorgini, L., “Overview of the Rheological Behaviour of Ceramic Slurries,” FME Transactions, V. 47, No. 1, 2019, pp. 42-7.
41. Baia, X.; Wanga, Y.; Lib, R.; Chena, J.; Raoc, Q.; and Shud, S., “Corrosion Control and Inhibition Mechanism of Sodium Polyphosphate on Highly Eroded Cement Coating Pipe Surfaces,” Desalination and Water Treatment, V. 113, 2018, pp. 81-87. doi: 10.5004/dwt.2018.22305
42. Andreola, F.; Castellini, E.; Manfredini, T.; and Romagnoli, M., “The Role of Sodium Hexametaphosphate in the Dissolution Process of Kaolinite and Kaolin,” Journal of the European Ceramic Society, V. 24, No. 7, 2004, pp. 2113-2124. doi: 10.1016/S0955-2219(03)00366-2
43. Otroj, S.; Nilforushan, M. R.; Daghighi, A.; and Marzban, R., “Impact of Dispersants on the Mechanical Strength Development of Alumina-Spinel Self-Flowing Refractory Castables,” Ceramics-Silikáty, V. 54, No. 3, 2010, pp. 284-289.
44. ASTM D422-63, “Standard Test Method for Particle-Size Analysis of Soils (Withdrawn 2016),” ASTM International, West Conshohocken, PA, 1963, pp. 10-16.
45. Rashad, A. M., and Essa, G. M. F., “Effect of Ceramic Waste Powder on Alkali-Activated Slag Pastes Cured in Hot Weather after Exposure to Elevated Temperature,” Cement and Concrete Composites, V. 111, 2020, Article No. 103617. doi: 10.1016/j.cemconcomp.2020.103617
46. Gopalakrishnan, R., and Chinnaraju, K., “Durability of Ambient Cured Alumina Silicate Concrete Based on Slag/Fly Ash Blends against Sulfate Environment,” Construction and Building Materials, V. 204, 2019, pp. 70-83. doi: 10.1016/j.conbuildmat.2019.01.153
47. Kuranlı, Ö. F.; Uysal, M.; Abbas, M. T.; Cosgun, T.; Niş, A.; Aygörmez, Y.; Canpolat, O.; and Al-mashhadani, M. M., “Evaluation of Slag/Fly Ash Based Geopolymer Concrete with Steel, Polypropylene and Polyamide Fibers,” Construction and Building Materials, V. 325, 2022, Article No. 126747. doi: 10.1016/j.conbuildmat.2022.126747
48. Tan, H.; Guo, Y.; Ma, B.; Huang, J.; Gu, B.; and Zou, F., “Effect of Sodium Tripolyphosphate on Clay Tolerance of Polycarboxylate Superplasticizer,” KSCE Journal of Civil Engineering, V. 22, No. 8, 2018, pp. 2934-2941. doi: 10.1007/s12205-017-2017-4
49. Tan, H.; Huang, J.; Ma, B.; and Li, X., “Effect of Superplasticiser and Sodium Tripolyphosphate on Fluidity of Cement Paste,” Magazine of Concrete Research, V. 66, No. 23, 2014, pp. 1194-1200. doi: 10.1680/macr.14.00091
50. Li, X., “Effect of Chemical Admixtures on the Properties of Grouting Materials with High-Volume Mineral Materials,” Composites and Advanced Materials, V. 28, 2019.
51. Wei, J.; Yu, Q.; Zhang, W.; and Zhang, H., “Reaction Products of MgO and Microsilica Cementitious Materials at Different Temperatures,” Journal of Wuhan University of Technology-Materials Science Edition, V. 26, No. 4, 2011, pp. 745-748. doi: 10.1007/s11595-011-0304-3
52. Bu, Y.; Liu, H.; Nazari, A.; He, Y.; and Song, W., “Amphoteric Ion Polymer as Fluid Loss Additive for Phosphoaluminate Cement in the Presence of Sodium Hexametaphosphate,” Journal of Natural Gas Science and Engineering, V. 31, 2016, pp. 474-480. doi: 10.1016/j.jngse.2016.03.062
53. Otroj, S.; Bahrevar, M. A.; Mostarzadeh, F.; and Nilforoshan, M. R., “The Effect of Deflocculants on the Self-Flow Characteristics of Ultra Low-Cement Castables in Al2O3–Sic–C System,” Ceramics International, V. 31, No. 5, 2005, pp. 647-653. doi: 10.1016/j.ceramint.2004.06.023
54. Studart, A. R.; Zhong, W.; and Pandolfelli, V. C., “Rheological Design of Zero-Cement Self-Flow Castables,” American Ceramic Society Bulletin, V. 78, No. 5, 1999, pp. 65-72.
55. Pan, W., and Wang, P., “Effect of Compounding of Sodium Tripolyphosphate and Super Plasticizers on the Hydration of α-Calcium Sulfate Hemihydrate,” Journal of Wuhan University of Technology-Materials Science Edition, V. 26, No. 4, 2011, pp. 737-744. doi: 10.1007/s11595-011-0303-4
56. Jia, Y.; Wang, B.; Wu, Z.; Han, J.; Zhang, T.; Vandeperre, L. J.; and Cheeseman, C. R., “Role of Sodium Hexametaphosphate in MgO/SiO2 Cement Pastes,” Cement and Concrete Research, V. 89, 2016, pp. 63-71. doi: 10.1016/j.cemconres.2016.08.003
57. Song, S.; Sohn, D.; Jennings, H. M.; and Mason, T. O., “Hydration of Alkali-Activated Ground Granulated Blast Furnace Slag,” Journal of Materials Science, V. 35, No. 1, 2000, pp. 249-257. doi: 10.1023/A:1004742027117
58. Rashad, A. M.; Bai, Y.; Basheer, P. A. M.; Milestone, N. B.; and Collier, N. C., “Hydration and Properties of Sodium Sulfate Activated Slag,” Cement and Concrete Composites, V. 37, 2013, pp. 20-29. doi: 10.1016/j.cemconcomp.2012.12.010
59. Song, S., and Jennings, H. M., “Pore Solution Chemistry of Alkali-Activated Ground Granulated Blast-Furnace Slag,” Cement and Concrete Research, V. 29, No. 2, 1999, pp. 159-170. doi: 10.1016/S0008-8846(98)00212-9
60. Rashad, A. M., and Ezzat, M., “A Preliminary Study on the Use of Magnetic, Zamzam, and Sea Water as Mixing Water for Alkali-Activated Slag Pastes,” Construction and Building Materials, V. 207, 2019, pp. 672-678. doi: 10.1016/j.conbuildmat.2019.02.162
61. Sakulich, A. R., and Bentz, D. P., “Mitigation of Autogenous Shrinkage in Alkali Activated Slag Mortars by Internal Curing,” Materials and Structures, V. 46, No. 8, 2013, pp. 1355-1367. doi: 10.1617/s11527-012-9978-z
62. Song, C.; Choi, Y. C.; and Choi, S., “Effect of Internal Curing by Superabsorbent Polymers–Internal Relative Humidity and Autogenous Shrinkage of Alkali-Activated Slag Mortars,” Construction and Building Materials, V. 123, 2016, pp. 198-206. doi: 10.1016/j.conbuildmat.2016.07.007
63. Rashad, A. M.; Khafaga, S. A.; and Gharieb, M., “Valorization of Fly Ash as an Additive for Electric Arc Furnace Slag Geopolymer Cement,” Construction and Building Materials, V. 294, 2021, Article No. 123570. doi: 10.1016/j.conbuildmat.2021.123570
64. Hu, X.; Shi, C.; Shi, Z.; and Zhang, L., “Compressive Strength, Pore Structure and Chloride Transport Properties of Alkali-Activated Slag/Fly Ash Mortars,” Cement and Concrete Composites, V. 104, 2019, Article No. 103392. doi: 10.1016/j.cemconcomp.2019.103392
65. Mithun, B. M., and Narasimhan, M. C., “Performance of Alkali Activated Slag Concrete Mixes Incorporating Copper Slag as Fine Aggregate,” Journal of Cleaner Production, V. 112, Part 1, 2016, pp. 837-844. doi: 10.1016/j.jclepro.2015.06.026
66. Behfarnia, K., and Rostami, M., “Mechanical Properties and Durability of Fiber Reinforced Alkali Activated Slag Concrete,” Journal of Materials in Civil Engineering, ASCE, V. 29, No. 12, 2017, p. 04017231. doi: 10.1061/(ASCE)MT.1943-5533.0002073
67. Hammad, N.; El-Nemr, A.; and Hasan, H. E.-D., “The Performance of Fiber GGBS Based Alkali-Activated Concrete,” Journal of Building Engineering, V. 42, 2021, Article No. 102464. doi: 10.1016/j.jobe.2021.102464
68. Huang, J.; Zou, C.; Sun, D.; Yang, B.; and Yan, J., “Effect of Recycled Fine Aggregates on Alkali-Activated Slag Concrete Properties,” Structures, V. 30, 2021, pp. 89-99.
69. Bai, Y.-H.; Yu, S.; and Chen, W., “Experimental Study of Carbonation Resistance of Alkali-Activated Slag Concrete,” ACI Materials Journal, V. 116, No. 3, May 2019, pp. 95-104., doi: 10.14359/51715585
70. Ren, P.; Li, B.; Yu, J.-G.; and Ling, T.-C., “Utilization of Recycled Concrete Fines and Powders to Produce Alkali-Activated Slag Concrete Blocks,” Journal of Cleaner Production, V. 267, 2020, Article No. 122115. doi: 10.1016/j.jclepro.2020.122115
71. Nanayakkara, O.; Gunasekara, C.; Sandanayake, M.; Law, D. W.; Nguyen, K.; Xia, J.; and Setunge, S., “Alkali Activated Slag Concrete Incorporating Recycled Aggregate Concrete: Long Term Performance and Sustainability Aspect,” Construction and Building Materials, V. 271, 2021, Article No. 121512. doi: 10.1016/j.conbuildmat.2020.121512
72. El-Hassan, H.; Shehab, E.; and Al-Sallamin, A., “Effect of Curing Regime on the Performance and Microstructure Characteristics of Alkali-Activated Slag-Fly Ash Blended Concrete,” Journal of Sustainable Cement-Based Materials, V. 10, No. 5, 2021, pp. 289-317. doi: 10.1080/21650373.2021.1883145
73. Thunuguntla, C. S., and Rao, T. D. G., “Effect of Mix Design Parameters on Mechanical and Durability Properties of Alkali Activated Slag Concrete,” Construction and Building Materials, V. 193, 2018, pp. 173-188. doi: 10.1016/j.conbuildmat.2018.10.189
74. Lee, W.-H.; Wang, J.-H.; Ding, Y.-C.; and Cheng, T.-W., “A Study on the Characteristics and Microstructures of GGBS/FA Based Geopolymer Paste and Concrete,” Construction and Building Materials, V. 211, 2019, pp. 807-813. doi: 10.1016/j.conbuildmat.2019.03.291
75. Cai, Y.; Yu, L.; Yang, Y.; Gao, Y.; and Yang, C., “Effect of Early Age-Curing Methods on Drying Shrinkage of Alkali-Activated Slag Concrete,” Materials (Basel), V. 12, No. 10, 2019, Article No. 1633. doi: 10.3390/ma12101633
76. Song, H.; Cao, Z.; Xie, W.; Cheng, F.; Gasem, K. A. M.; and Fan, M., “Improvement of Dispersion Stability of Filler Based on Fly Ash by Adding Sodium Hexametaphosphate in Gas-Sealing Coating,” Journal of Cleaner Production, V. 235, 2019, pp. 259-271. doi: 10.1016/j.jclepro.2019.06.332
77. Hesaraki, S.; Zamanian, A.; and Moztarzadeh, F., “Effect of Adding Sodium Hexametaphosphate Liquefier on Basic Properties of Calcium Phosphate Cements,” Journal of Biomedical Materials Research Part A, V. 88, No. 2, 2009, pp. 314-321. doi: 10.1002/jbm.a.31836
78. Abdelrazig, B., Chemical Reactions in Magnesia-Phosphate Cement, 1984, 141 pp.
79. Aboulayt, A.; Souayfan, F.; Roziere, E.; Jaafri, R.; El Idrissi, A. C.; Moussa, R.; Justino C.; and Loukili A., “Alkali-Activated Grouts Based on Slag-Fly Ash Mixtures: From Early-Age Characterization to Long-Term Phase Composition,” Construction and Building Materials, V. 260, 2020, Article No. 120510. doi: 10.1016/j.conbuildmat.2020.120510
80. Fan, J.; Zhu, H.; Shi, J.; Li, Z.; and Yang, S., “Influence of Slag Content on the Bond Strength, Chloride Penetration Resistance, and Interface Phase Evolution of Concrete Repaired with Alkali Activated Slag/Fly Ash,” Construction and Building Materials, V. 263, 2020, Article No. 120639. doi: 10.1016/j.conbuildmat.2020.120639
81. Li, Z.; Zhang, S.; Liang, X.; Granja, J.; Azenha, M.; and Ye, G., “Internal Curing of Alkali-Activated Slag-Fly Ash Paste with Superabsorbent Polymers,” Construction and Building Materials, V. 263, 2020, Article No. 120985. doi: 10.1016/j.conbuildmat.2020.120985