Abstract
Ready-mixed concrete manufacturing consumes a lot of cement and generates millions of m3 of concrete sludge waste (CSW). It is known that CSW is heterogeneous and has different chemical and physical properties. This paper evaluates the influence of fine CSW fractions on the properties of structural mortars by partially replacing cement with fine fractions of concrete sludge waste. CSW samples were collected from three different concrete batching plants (CBPs) and 25% of cement used in concrete production was replaced by fine fractions of sludge – maintaining the water/fines ratio and no additives were used. The results showed that the variation in characteristics of the three CSWs influenced the properties of the mortars produced. Results at hardened state, with cement replacement by fine sludge waste, were close to those recorded for mortars composed with the addition of limestone filler – values were within the ranges set by the standard for composite cement with filler. The results became closer as calcite content increased in the sludge samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
