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Study of five hydraulic dam sludges from Argelia as pozzolanic materials

AuthorsRodríguez, Olga; Kacimi, L.; Guerrero Bustos, Ana María; López Delgado, Aurora ; Bouhmid, Mama; Mekkaoui, Fatiha; Tayibi, Hanan; Padilla, Isabel; Frías, Moisés ; Sánchez de Rojas, M. Isabel
Keywordshydraulic dam sludges, pozzolanic activity, characterization, cement
Issue Date21-Mar-2012
AbstractThis paper reports the study of the pozzolanic properties of sludges from different hydraulic dams from Algeria compared with normalized pozzolans, such as silica fume and fly ash. The study of the pozzolanic activity was carried out by an accelerated method of saturated lime solution, based on the Frattini method for pozzolanic cements. The results showed that one of the studied sludge (SLD5) is more active than silica fume (a very reactive pozzolan) at 28 days of reaction. The rest of sludges (SLD1-SLD4) show also high pozzolanic activity and consumed about 61-78% of the available lime at 28 days of pozzolanic reaction. The blended cements made with 20% of this waste showed compressive strength lower than the obtained by reference ordinary Portland cement (OPC) due to the dilution effect provokes by pozzolans, but SLD5 obtain a higher value of compressive strength at long ages of curing (90 days).
DescriptionE3D 2012, Eau, Dechets et Developpment Durable Congres. Agadir, Marruecos
Appears in Collections:(CENIM) Comunicaciones congresos
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