Naslov
Setting time regulation of polymer modified calcium aluminate cement based materials

Autori
Ukrainczyk, Neven ; Rogina, Anamarija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
International conference on materials, tribology, recycling (MATRIB 2010) : zbornik radova = proceedings / Schauperl, Zdravko ; Šnajdar, Mateja - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2010, 512-520

ISBN
978-953-7040-18-5

Skup
International conference on materials, tribology, recycling

Mjesto i datum
Vela Luka, Hrvatska, 23.06.2010. - 25.06.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
calcium aluminate cement; hydration; setting time; SBR latex; polymer modified mortar.

Sažetak
In comparison to portland cement, calcium aluminate cements (CAC) show relatively slow setting but rapid hardening characteristics. Styrene-butadiene-rubber 1 (SBR) modified cement based materials have been widely used for floor and bridge overlays. A small amount of different organic and inorganic compounds show pronounced influence on setting time of CAC based materials. In this paper the influence of styrene-butadiene-rubber (SBR) on iron-rich calcium aluminate cement (CAC) hydration was investigated. Cement pastes and mortars with quartz sand (0.5-1mm) and natural sand (0-4mm) with different polymer content (p/c = 0 to 20 %) were prepared. As a set regulator an accelerator Li2CO3 was used. Times of initial and final sets were established from measurements of temperature rise of prepared materials. Cement paste series showed high retardation of setting time with SBR addition. Mortar series showed that larger SBR additions (p/c ≥ 6%) retard the setting time, while small amounts even slightly shortens it. Setting time of SBR modified CAC materials can be accelerated by small amounts of Li2CO3.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Kemijsko inženjerstvo

POVEZANOST RADA