Activation of fly ash cementitious systems in the presence of quicklime. Part II: Nature of hydration products, porosity and microstructure development

Cement and Concrete Research

Volumn 36, Issue 12, 2006, Pages 2123-2131

  Antiohos, S ^a   Papageorgiou, A ^b   Tsimas, S ^a  

^a NATIONAL TECHNICAL UNIVERSITY OF ATHENS   (Greece)

^b NONE   (Greece)

Author keywords

Gel space ratio; Hydration products (B); Mercury porosimetry (B); Microstructure (B); Pore size distribution (B)

Indexed keywords

APPROXIMATION THEORY; CRYSTALLINE MATERIALS; FLY ASH; HYDRATION; MICROSCOPIC EXAMINATION; MICROSTRUCTURE; PORE SIZE; POROSITY;

CALCIUM SULPHOALUMINATES; CHEMICAL ACTIVATORS; GEL/SPACE RATIO; HYDRATION PRODUCTS; MERCURY POROSIMETRY;

LIME;

EID: 33751371169     PISSN: 00088846     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cemconres.2006.09.013     Document Type: Article

References (31)

1. Vassilev S.V., Menendez R., Alvarez D., Diaz-Somoano M., and Martinez-Tarazona M.R. Phase-mineral and chemical composition of coal fly ashes as a basis for their multicomponent utilization. 1. Characterization of feed coals and fly ashes. Fuel 82 14 (2003) 1793-1811
2. Sakorafa V., Michailidis K., and Burragato F. Mineralogy, geochemistry and physical properties of fly ash from the Megalopolis lignite fields, Peloponnese, Southern Greece. Fuel 75 4 (1996) 419-423
3. Mangialardi T. Disposal of MSWI fly ash through a combined washing-immobilisation process. J. Hazard. Mater. 98 1-3 (2003) 225-240
4. Sear L.K. UK practice - a review of fly ashes for use in concrete. PROGRES Workshop on Novel Products from Combustion Residues, Morella, Spain (2001)
5. Ramezanianpour A.A., and Malhotra M. Effect of curing on the compressive strength, resistance to chloride-ion penetration and porosity of concretes incorporating slag, fly ash or silica fume. Cem. Concr. Compos. 17 2 (1995) 125-133
6. Zhang M.H. Microstructure, crack propagation, and mechanical properties of cement pastes containing high volumes of fly ashes. Cem. Concr. Res. 25 6 (1995) 1165-1178
7. Antiohos S., and Tsimas S. Chloride resistance of concrete incorporating two types of fly ashes and their intermixtures. The Effect of Active Silica Content, Proceedings of the 6th International Conference on Durability of Concrete, Thessaloniki (2003) 115 Supplementary Papers
8. Chindaprasirt P., Homwuttiwong S., and Sirivivatnanon V. Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar. Cem. Concr. Res. 34 7 (2004) 1087-1092
9. Bouzoubaâ N., Zhang M.H., and Malhotra M. Mechanical properties and durability of concrete made with high-volume fly ash blended cements using a coarse fly ash. Cem. Concr. Res. 31 10 (2001) 1393-1402
10. Jiang L., Liu Z., and Ye Y. Durability of concrete incorporating large volumes of low-quality fly ash. Cem. Concr. Res. 34 8 (2004) 1467-1469
11. Poon C.S., Qiao X.C., and Lin Z.S. Pozzolanic properties of reject fly ash in blended cement pastes. Cem. Concr. Res. 31 11 (2003) 1857-1865
12. Ghosh S.N., and Sarkar L.S. Mineral admixtures in cement and concrete. Progress in Cement and Concrete. 1st ed. (1993), ABI Books, New Delhi 565
13. Saraswathy V., Muralidharan S., Thangavel K., and Srinivasan S. Influence of activated fly ash on corrosion-resistance and strength of concrete. Cem. Concr. Compos. 25 7 (2003) 673-680
14. Goñi S., Guerrero A., Luxán M.P., and Macías A. Activation of the fly ash pozzolanic reaction by hydrothermal conditions. Cem. Concr. Res. 33 9 (2003) 1399-1405
15. Puertas F., and Fernández-Jiménez A. Mineralogical and microstructural characterisation of alkali-activated fly ash/slag pastes. Cem. Concr. Compos. 25 3 (2003) 287-292
16. Katz A. Microscopic study of alkali-activated fly ash. Cem. Concr. Res. 28 2 (1998) 197-208
17. Antiohos S., and Tsimas S. Activation of fly ash cementitious systems in the presence of quicklime. Part I. Compressive strength and pozzolanic reaction rate. Cem. Concr. Res. 34 5 (2004) 769-779
18. Adams L.D. Ettringite, the positive side. Proceedings of the 19th International Conference on Cement Microscopy, Cincinnati, Ohio, April 27-May 1 (1997) 1-13
19. Verbeck G. Cement Hydration Reactions at Early Ages, Research and Development Information, PCA R&D Serial No. 189 (1965), Portland Cement Association
20. Berry E.E., Hemmings R.T., and Cornelius B.J. Mechanisms of hydration reactions in high volume fly ash pastes and mortars. Cem. Concr. Compos. 12 4 (1990) 253-261
21. Havlica J., and Sahu S. Mechanism of ettringite and monosulphate formation. Cem. Concr. Res. 22 4 (1992) 671-677
22. Tishmack J.K., Olek J., and Diamond S. Characterization of high-calcium fly ashes and their potential influence on ettringite formation in cementitious systems. Cem. Concr. Aggreg. 21 1 (1999) 82-92
23. Mindess S., Young J.F., and Darwin D. Concrete. Second ed. (2003), Prentice-Hall, NJ
24. 3 on the hydration activity of municipal solid waste incinerator fly ash slag. Cem. Concr. Res. 34 4 (2004) 587-592
25. Neville A.M. Properties of Concrete. Fourth and Final ed. (1995), Longman
26. Lam L., Wong Y.L., and Poon C.S. Degree of hydration and gel/space ratio of high-volume fly ash/cement systems. Cem. Concr. Res. 30 5 (2000) 747-756
27. Bentz D.P., and Garboczi E.J. Simulation studies of the effects on mineral admixtures on the cement paste-aggregate interfacial zone. ACI Mater. J. 88 5 (1991) 518-529
28. Heikal M. Effect of calcium formate as an accelerator on the physicochemical and mechanical properties of pozzolanic cement pastes. Cem. Concr. Res. 34 6 (2004) 1051-1056
29. Tenoutasse N., and Marion A.-M. Mechanism of hydration of cement blended with fly ashes, Proceedings of Blended Cements symposium. ASTM Special Technical Publication (1984), Geoffrey Frohnsdorff, Denver 65-85
30. Minnick L.J. Proceedings of the Edison Electric Industry, Natural Coal Association and Bureau of Mines Symposium, Fly Ash Utilization (1967) US
31. Grutzeck M.W., Roy D.M., and Scheetz B.E. Hydration mechanisms of high-lime fly ash in Portland-cement composites. Proceedings of the Materials Research Symposium, MRS-N (1981) 92-101