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Cement pastes and mortars with low water-to-cement ratio I

✍ Scribed by F. Škvára; K. Kolář; J. Novotný; Z. Zadák

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
532 KB
Volume
10
Category
Article
ISSN
0008-8846

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✦ Synopsis

Clinkers of nominal Czechoslovak production were ground in presence of grinding aid (d~rivative of lignin) to specific surfaces 400 -2700 m-/kg and were processed in presence of sodium Zignosulfonate and alkali carbonate (resp. bicarbonate) into pastes and mortars with low water-to-cement ratio. The clinker Z~gnosuZfonatecarbonate-H~O system (further under A ) is qualitatively differen~ to the clinker-gypsum-H~O system in rheological properties and in reaching sBort and long-term strengths. The volume changes (A) are similar to volume changes in Portland cements. The properties of system A are affected by concentration and type of carbonate and lignosuZfonate.

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