Experiment on the heat evolved in the setting of each of 13 cements.
x1, x2, x3, x4
Proportions (%) of active ingredients.
heat evolved in cals/gm.
Thirteen samples of Portland cement were set. For each sample, the percentages of the four main chemical ingredients was accurately measured. While the cement was setting the amount of heat evolved was also measured.
Woods, H., Steinour, H.H. and Starke, H.R. (1932) Effect of composition of Portland cement on heat evolved during hardening. Industrial Engineering and Chemistry, 24, 1207–1214.
Hald, A. (1957) Statistical Theory with Engineering Applications. Wiley, New York.
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