Naslov
Effect of polycarboxylate superplasticiser on properties of calcium aluminate cement mortar

Autori
Ukrainczyk, Neven

Izvornik
Advances in cement research (0951-7197) 27 (2015), 7; 388-398

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Calcium aluminate cement; calorimetry; hydration kinetics; mechanical properties; rheology; setting time; superplasticizer

Sažetak
The effect of polycarboxilate ether (PCE)-based superplasticiser on the fresh and hardened properties of calcium aluminate cement (CAC)-based materials was investigated. Cohesion of the fresh mortar was improved by addition of methyl-cellulose, thus avoiding segregation induced by the superplasticiser action. As PCE significantly retarded the setting time, lithium carbonate (Li2CO3) was investigated as an accelerator by calorimetric measurements. Compressive and flexural strengths, porosity and dynamic modulus were tested after 1 d and 9 d cured at 238C and after transformation of metastable hydration products to stable ones at 608C. The combined usage of PCE with methyl-cellulose and lithium carbonate showed promising superplasticising properties for CAC that improved properties of the material.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Građevinarstvo, Kemijsko inženjerstvo

POVEZANOST RADA