Study on the Effect of Fly Ash or Silica Fume to Hydration Heat of Cement

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The hydration heat evolution process is studied on the pure cement paste, the cement- fly ash binary system and the cement- silica fume binary system with water binder ratio(w/b) of 0.53, 0.35 and 0.23 by using isothermal calorimeter(TAM Air). The fly ash replacement in the cement-fly ash binary system is 10%, 30% and 50% respectively. The silica fume replacement in cement-silica fume binary system is 4%, 8% and 12% respectively. The experiments results indicate that w/b had great impact on the hydration heat evolution and the hydration heat decrease with the decrease in w/b. The addition of fly ash greatly decrease the exothermic rate and total hydration heat. The addition of silica fume shortens dormant period and increases the peak exothermic rate, but reduces the total hydration heat.

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Edited by:

Guangfan Li, Yong Huang and Chaohe Chen

Pages:

4001-4004

Citation:

L. G. Ma and Y. S. Zhang, "Study on the Effect of Fly Ash or Silica Fume to Hydration Heat of Cement", Advanced Materials Research, Vols. 250-253, pp. 4001-4004, 2011

Online since:

May 2011

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$38.00

[1] American Concrete Institute Committee 226, Use of Fly Ash in Concrete. Manual of Concrete Practice, Part 1, American Concrete Institute. (1987), p.226.

[2] P.K. Mehta, O.E. Gjorv: Cement. Concrete. Research. Vol. 12 (1982), pp.587-595.

[3] F.F. Radjy: American Concrete Institute, Vol. 2, SP-91 (1986), pp.1135-1152.

[4] T. Yamato: American Concrete Institute, Vol. 2, SP-114 (1989), pp.897-914.

[5] Yue Chen: Modern Scientific Instruments, China, Vol. 5 (2005), pp.59-62.

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