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Internal curing agent in concrete and mortars

Application of superabsorbent polymers (SAP) in cementitious materials with blended cements


This paper is part of the larger study on the application of superabsorbent polymers (SAP) in concrete construction. The focus here is placed on the assessment of SAP efficiency as an internal curing agent in cementitious materials with blended cements. The paper presents the outcomes of two experimental studies on polymer modified mortars containing ground granulated blast-furnace slag (GGBS) and fly ash (FA). Results show that SAP has a positive influence on mortars with blended cements due to its capacity to release water for longer periods. Any SAP addition will result in significant reductions in autogenous shrinkage. Long term compressive strength values of SAP modified mortars are comparable with the reference specimens despite an initial drop due to polymer collapse. The use of SAPs in blended cements meets the challenges of the construction industry to produce new composites with improved performance.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 12 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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