"Portland cement is not a material of great antiquity. It was discovered only a little over a century ago and quite by accident. It has been the custom in the manufacture of hydraulic limes to heat argillaceous limestones to temperatures not greatly above that at which the carbon dioxide would be liberated, but this process was carried out in a stack furnace under conditions such that some parts of the material were heated to temperatures which produced sintering. These hard lumps of sintered material were discarded because they were so much more difficult to grind than the unsintered However, in 1824, Aspdin ground some of these hard lumps and, in confirmation of a report of Vicat, found that they produced a cementing material far superior to any of those formerly produced by the old process. To this the name "portland cement" was given because of a similarity in appearance, when made into concrete, to a natural rock quarried on the Isle of Portland in England. Cement manufacturers are naturally interested in new developments and one of these is the use of clay as a plasticizer in cements to be used by masons. The object of this investigation is to study the effects of clay admixtures to masonry cement"--Introduction, page 1-2.
Herold, Paul G.
Materials Science and Engineering
B.S. in Ceramic Engineering
Missouri Portland Cement Company
Missouri School of Mines and Metallurgy
i, 24 pages
© 1940 William Joseph Smothers, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Cement -- Additives
Portland cement -- Additives
T 0000 56
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b2497716~S5
Smothers, William Joseph, "The effect of clays on the properties of masonry cement" (1940). Bachelors Theses. 125.