Rheological and strength performance of cement paste with ground fluorescent lamp glass waste and ash
2013
Kara, P., Riga Technical Univ. (Latvia). Inst. of Materials and Structures
The rheological behaviour of fresh mortars is a key characteristic since it determines the material’s workability, having as well a great influence on the hardened product’s final characteristics. Portland cement substitution with lamp glass waste (DRL – mercury vapour lamps and LB – fluorescent tubes) in concrete has a significant effect on strength performance and workability. In the present study an experimental program aiming to evaluate the effectiveness of lamp glass waste ground from 10min to 60min and used as a cement component in cement paste mix, has been completed. Viscosity, electrical conductivity and compressive strength of cement paste samples with Portland cement substitution at a level of 30% with ground lamp glass waste and bottom wood/coal ash were determined. The results showed a significant increase of the workability for cement paste mixes with LB and wood ash, and an increase of compressive strength for DRL and coal ash mixes.
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