The paper is aimed to the evaluation of the influence of water/binder ratio, tartaric acid dosage and curing condition on rheological, elastic and physical properties of sustainable shrinkage-compensating concretes manufactured with calcium sulphoaluminate cement (CSA), anhydrite (CS¯) and supplementary cementitious materials (SCMs)/lime (CH) compound in place of ordinary Portland cement (OPC). Results indicated that tartaric acid-based set-retarding admixture governs the behavior of concrete both in fresh and hardened state. In addition, according to Abram's model, results evidenced the water/binder ratio as a key factor in strength gain. Moreover, tartaric acid allows the production of shrinkage-compensating Portland-free concretes particularly indicated for slabs on ground. Finally, by replacing OPC with SCMs and lime, it is possible to obtain, both for CO2-emissions and energy consumption, a reduction up to 60% at equal strength class respect to an OPC-based concrete.

(2018). CSA-based Portland-free binders to manufacture sustainable concretes for jointless slabs on ground [journal article - articolo]. In CONSTRUCTION AND BUILDING MATERIALS. Retrieved from http://hdl.handle.net/10446/131124

CSA-based Portland-free binders to manufacture sustainable concretes for jointless slabs on ground

Coppola, L.;Coffetti, D.;Crotti, E.;Pastore, T.
2018-01-01

Abstract

The paper is aimed to the evaluation of the influence of water/binder ratio, tartaric acid dosage and curing condition on rheological, elastic and physical properties of sustainable shrinkage-compensating concretes manufactured with calcium sulphoaluminate cement (CSA), anhydrite (CS¯) and supplementary cementitious materials (SCMs)/lime (CH) compound in place of ordinary Portland cement (OPC). Results indicated that tartaric acid-based set-retarding admixture governs the behavior of concrete both in fresh and hardened state. In addition, according to Abram's model, results evidenced the water/binder ratio as a key factor in strength gain. Moreover, tartaric acid allows the production of shrinkage-compensating Portland-free concretes particularly indicated for slabs on ground. Finally, by replacing OPC with SCMs and lime, it is possible to obtain, both for CO2-emissions and energy consumption, a reduction up to 60% at equal strength class respect to an OPC-based concrete.
articolo
Coppola, L.; Coffetti, D.; Crotti, E.; Pastore, T.
(2018). CSA-based Portland-free binders to manufacture sustainable concretes for jointless slabs on ground [journal article - articolo]. In CONSTRUCTION AND BUILDING MATERIALS. Retrieved from http://hdl.handle.net/10446/131124
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