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Cement paste hydrated in Sr(OH)2

✍ Scribed by D.N. Winslow; W.L. Dolch

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 789 KB
Volume: 6
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(76)90128-9

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✦ Synopsis

Samples of hydrating Type I portland cement paste were soaked in a saturated St(OH)2 solution at 80°C for periods from 7 to 28 days.

This treatment generates a new and, as yet, unidentified material.

The new material has a charaotemistie X-ray pattern, contains ,strontium, and is less porous and much stronger than hydrated cement paste•

The 28-day modulus of rupture is increased 60% over that of hydrated cement paste soaked in saturated Ca (OH)2 solution at 80°C. Evidence is presented that this new material occupies an increased volume and thereby produces an early, chemically-induced, prestress with the result that the 7-day modulus of z,/ptu~e is about 10% greater than the 28-day value.

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