TITLE:
Effect of Clay Fines on the Behavior of Self-Compacting Concrete
AUTHORS:
Zine Eddine Abib, Haifa Gaher-Abib, Fattoum Kharchi
KEYWORDS:
Waste Crushed Brick; Pozzolanic Activity; Heat of Hydration; Workability; Strength; Self Compacting Concrete
JOURNAL NAME:
Engineering,
Vol.5 No.2,
February
18,
2013
ABSTRACT: The technology of concrete has significantly increased in recent years through the use of super plasticizer and availability of mineral additions. One of the most recent materials used as an additive, replacing a portion of cement in concrete, is fine clay fired at a temperature of 800℃ to 900℃. This research is based on trials that complied with artificial pozzolan (waste crushed brick), and their effect on the rheological and mechanical behavior of mortar. The addition of 5% of a waste crushed brick has helped not only to improve the strength (tensile and compression), but also to foster a better rheological behavior in terms of fluidity and stability, with a low heat of hydration compared to control. However, tests of optimizing the content of self-compacting concrete (SCC) in coarse aggregates, sand and binder, led us to confirm that the combined mass of more optimal (better workability and stability) is that based on low in volumetric percentage of sand/paste with a granular skeleton richest gravel low dimensions (2/3 of G 3/8 and 1/3 of G 8/15).