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Article

The Effect of Curing Conditions on Selected Properties of Recycled Aggregate Concrete

1
Institute of Construction and Geoengineering, Poznań University of Life Science, 60-649 Poznań, Poland
2
Aqua Stone, 60-002 Poznań, Poland
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(13), 4441; https://doi.org/10.3390/app10134441
Received: 20 May 2020 / Revised: 22 June 2020 / Accepted: 24 June 2020 / Published: 27 June 2020
(This article belongs to the Special Issue Recycled Materials for Construction Applications)
The paper presents the influence of different curing conditions—wet, dry, and protection against water evaporation (PEV)—on selected properties of concretes with different amounts of recycled concrete aggregate (RCA) previously subjected to atmospheric CO2 sequestration. Two types of cement were used, Portland cement and blast-furnace slag cement. The study was performed in laboratory conditions (at the temperature of 20 ± 1 °C and relative humidity of about 60%), according to currently applicable test procedures for most of the measured characteristics of concrete. Additionally, the eco-efficiency indexes (bi and ci) as well as the eco-durability S-CO2 index were calculated. It was found that dry conditions cause the properties of concrete to deteriorate, especially concrete made of blast-furnace slag cement, while PEV allows the achievement of results comparable to wet conditions. Moreover, for series with the highest amounts of coarse recycled aggregate and after longer periods of curing, the difference between the effects of wet curing and protection against water evaporation disappears. The eco-efficiency and eco-durability indexes approach confirms the beneficial effect of blast-furnace slag cement used as a binder, but on the condition of using a proper way of curing. View Full-Text
Keywords: curing conditions; carbonated recycled concrete aggregate; eco-efficiency indexes; eco-efficient index curing conditions; carbonated recycled concrete aggregate; eco-efficiency indexes; eco-efficient index
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MDPI and ACS Style

Grabiec, A.M.; Zawal, D.; Rasaq, W.A. The Effect of Curing Conditions on Selected Properties of Recycled Aggregate Concrete. Appl. Sci. 2020, 10, 4441. https://doi.org/10.3390/app10134441

AMA Style

Grabiec AM, Zawal D, Rasaq WA. The Effect of Curing Conditions on Selected Properties of Recycled Aggregate Concrete. Applied Sciences. 2020; 10(13):4441. https://doi.org/10.3390/app10134441

Chicago/Turabian Style

Grabiec, Anna M., Daniel Zawal, and Waheed Adewale Rasaq. 2020. "The Effect of Curing Conditions on Selected Properties of Recycled Aggregate Concrete" Applied Sciences 10, no. 13: 4441. https://doi.org/10.3390/app10134441

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