Early strength enhancement of high-volume fly ash mortar using accelerating admixtures
Email:
quanghuce83@gmail.com
Từ khóa:
mortar, high-volume fly ash, lime, silica fume, accelerating admixture, strength.
Tóm tắt
High-volume fly ash mortar is considered a "green" material, a sustainable development solution for the construction industry, in which the fly ash replacement Portland cement content is over 50%. However, this material has the major disadvantage of slow strength development, especially at an early age, which limits its applicability. To overcome the above disadvantage, the individual or combined addition of lime Ca(OH)2, silica fume, and/or accelerating admixtures including sodium thiocyanate (NaSCN), diethanolamine (DEA), and glycerol (Gly), etc. have been interested recently. In this study, to enhance the early strength of mortars with fly ash content to replace 60÷80% of Portland cement, a three-component accelerating admixture of NaSCN, DEA, and Gly (2:1:0.5 by the mass) was used with different ratios of 0.21÷0.49 % by the total powder mass, combined with a reasonable amount of lime, silica fume supplement as presented in previous research. Experimental results showed that the optimal accelerating admixture content is 0.35% by weight of powder, combined with 6% silica fume and the additional amount of lime is 5%; 10%; and 15% corresponding to mortars using fly ash of 60%; 70% and 80%, respectively to improve early strength of mortars that are suitable for structural use (R3 ≥ 13MPa, 3 days old). In addition, the influence of the additives used on the initial setting time of high-volume fly ash mortars was also discussed.Tài liệu tham khảo
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[13]. S. Aggoun, M. Cheikh-Zouaoui, N. Chikh, R. Duval, Effect of some admixtures on the setting time and strength evolution of cement pastes at early ages, Construction and Building Materials, 22 (2008) 106–110. https://doi.org/10.1016/j.conbuildmat.2006.05.043
[14]. K. Riding, D. A. Silva, K. Scrivener, Early age strength enhancement of blended cement systems by CaCl2 and diethanol-isopropanolamine, Cement and Concrete Research, 40 (2010) 935–946. https://doi.org/10.1016/j.cemconres.2010.01.008
[15]. K. Hoang, H. Justnes, M. Geiker, Early age strength increase of fly ash blended cement by a ternary hardening accelerating admixture, Cement and Concrete Research, 81 (2016) 59–69. https://doi.org/10.1016/j.cemconres.2015.11.004
[16]. ACI Committee 232, Use of Fly Ash in Concrete, ACI 232.2R-03, American Concrete Institute, Farmington Hills, Michigan, 1996, 41 pages.
[17]. C. Jin, C. Wu, C. Feng, Q. Zhang, Z. Shangguan, Z. Pan, S. Meng, Mechanical Properties of High-Volume Fly Ash Strain Hardening Cementitious Composite (HVFA-SHCC) for Structural Application. Materials, 12 (2019) 2607. https://doi.org/10.3390/ma12162607
[18]. Yun-Wang Choi, Man-Seok Park, Byung-Keol Choi, Sung-Rok Oh, A Study on the Evaluation of Field Application of High-Fluidity Concrete Containing High Volume Fly Ash, Advances in Materials Science and Engineering, 2015 (2015) 7 pages. https://doi.org/10.1155/2015/507018
[19]. D.P. Bentz, C.F. Ferraris, Rheology and setting of high volume fly ash mixtures, Cement and Concrete Composites, 32 (2010) 265-270. https://doi.org/10.1016/j.cemconcomp.2010.01.008
[20]. H. N. Stein, Influence of some additives on the hydration reactions of Portland cement I. Non-ionic organic additives, Journal of Applied Chemistry, 11 (1961) 474–482. https://doi.org/10.1002/jctb.5010111205
[2]. A. M. Rashad, A brief on high-volume Class F fly ash as cement replacement – A guide for Civil Engineer, International Journal of Sustainable Built Environment, 4 (2015) 278–306. https://doi.org/10.1016/j.ijsbe.2015.10.002
[3]. K. Vijai, R. K. Rathinam, B. G. Vishnuram, Effect of types of curing on strength of geopolymer concrete, International Journal of the Physical Sciences, 5 (2010) 1419–1423
[4]. D. P. Bentz, C. F. Ferraris, Rheology and setting of high-volume fly ash mixtures, Cement and Concrete Composites, 32 (2010) 265–270. https://doi.org/10.1016/j.cemconcomp.2010.01.008
[5]. Y. Halse, P. Pratt, J. Dalziel, W. Gutteridge, Development of microstructure and other properties in flyash OPC systems, Cement and Concrete Research, 14 (1984) 491-498
[6]. E. Yaşar, Y. Erdoğan, A. Kılıç, Effect of limestone aggregate type and water–cement ratio on concrete strength, Materials Letters, 58 (2004) 772–777. https://doi.org/10.1016/j.matlet.2003.06.004
[7]. S. K. Antiohos, A. Papageorgiou, V. G. Papadakis, S. Tsimas, Influence of quicklime addition on the mechanical properties and hydration degree of blended cements containing different fly ashes, Construction and Building Materials, 22 (2008) 1191–1200. https://doi.org/10.1016/j.conbuildmat.2007.02.001
[8]. H. A. Toutanji, T. El-Korchi, The influence of silica fume on the compressive strength of cement paste and mortar, Cement and Concrete Research, 25 (1995) 1591–1602. https://doi.org/10.1016/0008-8846(95)00152-3
[9]. T. Wise, V. S. Ramachandran, G. M. Polomark, The effect of thiocyanates on the hydration of portland cement at low temperatures, Thermochimica Acta, 264 (1995) 157–171. https://doi.org/10.1016/0040-6031(95)02323-T
[10]. Z. Heren, H. Ölmez, The influence of ethanolamines on the hydration and mechanical properties of portland cement, Cement and Concrete Research, 26 (1996) 701–705. https://doi.org/10.1016/S0008-8846(96)85007-1
[11]. C. Jolicoeur, S. Morasse, J. Sharman, A. Tagnit-Hamou, F. Slim, M. Page, Polyol-type Compounds as Clinker Grinding Aids: Influence on Powder Fluidity and on Cement Hydration. Available from: https://www.researchgate.net/figure/Name-and-abbreviation-of-the-grinding-aids-used_tbl1_256742747 [accessed 9 Aug, 2022]
[12]. Hung Vu Viet, Dam Quang Pho, Tran Hoang Van, Le Van Quang, The effect of lime and silica fume contents on the physical and mechanical properties of high volume fly ash mortars, Journal of Materials and Constructions, 12 (2022) 31-39. https://doi.org/10.54772/jomc.01.2022.255.
[13]. S. Aggoun, M. Cheikh-Zouaoui, N. Chikh, R. Duval, Effect of some admixtures on the setting time and strength evolution of cement pastes at early ages, Construction and Building Materials, 22 (2008) 106–110. https://doi.org/10.1016/j.conbuildmat.2006.05.043
[14]. K. Riding, D. A. Silva, K. Scrivener, Early age strength enhancement of blended cement systems by CaCl2 and diethanol-isopropanolamine, Cement and Concrete Research, 40 (2010) 935–946. https://doi.org/10.1016/j.cemconres.2010.01.008
[15]. K. Hoang, H. Justnes, M. Geiker, Early age strength increase of fly ash blended cement by a ternary hardening accelerating admixture, Cement and Concrete Research, 81 (2016) 59–69. https://doi.org/10.1016/j.cemconres.2015.11.004
[16]. ACI Committee 232, Use of Fly Ash in Concrete, ACI 232.2R-03, American Concrete Institute, Farmington Hills, Michigan, 1996, 41 pages.
[17]. C. Jin, C. Wu, C. Feng, Q. Zhang, Z. Shangguan, Z. Pan, S. Meng, Mechanical Properties of High-Volume Fly Ash Strain Hardening Cementitious Composite (HVFA-SHCC) for Structural Application. Materials, 12 (2019) 2607. https://doi.org/10.3390/ma12162607
[18]. Yun-Wang Choi, Man-Seok Park, Byung-Keol Choi, Sung-Rok Oh, A Study on the Evaluation of Field Application of High-Fluidity Concrete Containing High Volume Fly Ash, Advances in Materials Science and Engineering, 2015 (2015) 7 pages. https://doi.org/10.1155/2015/507018
[19]. D.P. Bentz, C.F. Ferraris, Rheology and setting of high volume fly ash mixtures, Cement and Concrete Composites, 32 (2010) 265-270. https://doi.org/10.1016/j.cemconcomp.2010.01.008
[20]. H. N. Stein, Influence of some additives on the hydration reactions of Portland cement I. Non-ionic organic additives, Journal of Applied Chemistry, 11 (1961) 474–482. https://doi.org/10.1002/jctb.5010111205
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Nhận bài
24/12/2022
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20/07/2023
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01/08/2023
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15/01/2024
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Kiểu trích dẫn
Vu Viet, H., & Le Van, Q. (1705251600). Early strength enhancement of high-volume fly ash mortar using accelerating admixtures. Tạp Chí Khoa Học Giao Thông Vận Tải, 75(1), 1149-1158. https://doi.org/10.47869/tcsj.75.1.4
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