RT Journal Article
T1 Effect of sepiolite on the flocculation of suspensions of fibre-reinforced cement
A1 Jarabo, Rocío
A1 Fuente, Elena
A1 Moral, Ana
A1 Blanco, Ángeles
A1 Izquierdo, Laura
A1 Negro, Carlos
K1 Particle size distribution
K1 Fibre reinforcement;
K1 Flocculation of fibre cement
AB Sepiolite is used to increase thixotropy of cement slurries for easier processing, to prevent sagging and to provide a better final quality in the manufacture of fibre-reinforced cement products. However, the effect of sepiolite on flocculation and its interactions with the components of fibre cement are yet unknown. The aim of this research is to study the effects of sepiolite on the flocculation of different fibre-reinforced cement slurries induced by anionic polyacrylamides (A-PAMs). Flocculation and floc properties were studied by monitoring the chord size distribution in real time employing a focused beam reflectance measurement (FBRM) probe. The results show that sepiolite increases floc size and floc stability in fibre-cement suspensions. Sepiolite competes with fibres and clay for A-PAMs adsorption and its interaction with A-PAM improves flocculation of mineral particles.
PB Elsevier
YR 2010
FD 2010-06-17
LK https://hdl.handle.net/10433/24774
UL https://hdl.handle.net/10433/24774
LA en
NO Cement and Concrete Research, vol 40, p. 1524-1530
NO ECOWAL Group, Molelular Biology and Biochemical Engineering Dpt. Universidad Pablo de Olavide, Road of Utrera Km.1, 41013 Seville, Spain.
DS RIO
RD May 1, 2026