Civil Engineering Reference
In-Depth Information
by DTA, TG, SEM (EDX), porosimetry, and chemical analysis.
TG
showed a loss in weight at 60°C for the loss of adsorbed water, and other
losses occurred due to the dissociation of C-S-H, Mg(OH)
2
, Ca(OH)
2
, and
CaCO
3
. The w/c ratio that was used to make concrete did not influence the
total amount of combined water. Higher amounts of carbonate were found
in concretes made at lower w/c ratios. It was also concluded that the
transition zone contained C-S-H and Ca(OH)
2
, the relative ratios depending
on the type of cement and cement:aggregate: water ratio.
REFERENCES
1.
Ramachandran, V. S
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Cement Chemistry,
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2.
Ramachandran, V. S., and Garg, S. P.,
Differential Thermal Analysis as
Applied to Building Science
(with an annotated bibliography), p. 182,
Central Building Research Institute, India (1959)
3.
Longuet, P., Application of Thermogravimetry to the Chemistry of Cement,
Rev. Materiaux de Construction,
537:538-540 (1960)
4.
Mackenzie, R. C., (ed.),
Differential Thermal Analysis,
2:607, Academic
Press, London (1972)
5.
Ghosh, S. N., (ed.),
Advances in Cement Technology,
p. 804, Pergamon
Press, London (1983)
6.
Ramachandran, V. S., and Beaudoin, J. J., (eds.),
Handbook of Analytical
Techniques in Cement Science and Technology,
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NJ (2001)
7.
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Hydrating Cements by DTA Technique,
Thermochimica Acta,
3:343-366
(1972)
8.
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Thermochimica Acta,
189:313-350 (1991)
9.
Ramachandran, V. S., Feldman, R. F., and Sereda, P. J., Applications of
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Highway Res. Rec.,
62:40-61
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10.
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Ghosh, S. N., and Mathur, V. K.,
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