Hald.Cement: Hald.Cement: Cement Composition and Evolved Heat

In thoree/stat340: Data and functions for BIAS at NMBU

Hald.Cement: Cement Composition and Evolved Heat

Description

The data in this data set is from a study in 1932 where they measured the heat evolution during the hardening of Portland cements. The measurements were taken from cement of varied compositions.

Usage

Hald.Cement

Format

A data frame with 13 observations (rows) and 5 variables (columns).

	Column name	Data type	Description	Values
[,1]	Y	numeric	The evolved heat in calories/gram	(72.5 - 115.9)
[,2]	x1	numeric	Percentage of 3CaO.Al2O3	(1 - 21)
[,3]	x2	numeric	Percentage of 3CaO.SiO2	(26 - 71)
[,4]	x3	numeric	Percentage of 4CaO.Al2O3.Fe2O3	(4 - 23)
[,5]	x4	numeric	Percentage of 2CaO.SiO2	(6 - 60)

The last 4 columns, x1, x2, x3 and x4, give the percentage of the weight of the given chemical compound in the clinkers. The clinkers are the residue/leftovers from burnt coal.

References

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.

Examples

# A short summary of the variables
summary(Hald.Cement)

# Linear model
lm(Y ~ x1 + x2 + x3 + x4, data = Hald.Cement)

# Scatterplot matrix of the variables
pairs(Hald.Cement[,2:6])

thoree/stat340 documentation built on June 30, 2024, 4:04 p.m.