Cause and prevention of deterioration of portland cement

✍ Scribed by W.M. Meyers

• Publisher: Elsevier Science
• Year: 1922
• Tongue: English
• Weight: 127 KB
• Volume: 194
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(22)90082-1

✦ Synopsis

By M. B. Cooke. _\s a by-product of an investigation into the nature of " gumforming " constituents of gasoline, the U. S. Bureau of Mines recorded data showing the pressure that may he developed in a still when gasoline

or other oil is subjected to elevated tempera-tL!res. Samples of casinghead gasoline, motor gasoline, kerosene, and transformer oil were heated in a small steel bomb, the pressures developed were recorded by a gage, and temperature-pressure curves were made.

These curves show that petroleum products with a low boiling range-such as casinghead gasoline and some of the lighter motor gasolines-generate a higher pressure at a given temperature than water vapor.

Petroleum products with a relatively high boiling range, such as kerosene and transformer oil, generate less pressure than \vater vapor at a given temperature.

In general, the pressure generated by petroleum products: when subjected to elevated temperatures, varies inversely \-ith the average boiling point of the product.

The temperature curves, as well as the distillation range curves, are not parallel, o\ving to the carrying composition of the products.

The complete report illustrated graphically may be obtained from the Bureau of Lines.

CAUSE AND PREVENTION

OF DETERIORATION OF PORTLAND CEMENT.