Accelerated carbonation of recycled concrete aggregates: Investigation on the microstructure and transport properties at cement paste and mortar scales

2022 ◽  
Vol 57 ◽  
pp. 101885
Author(s):  
Farah Kaddah ◽  
Harifidy Ranaivomanana ◽  
Ouali Amiri ◽  
Emmanuel Rozière
2021 ◽  
pp. 100106
Author(s):  
Glaydson S. DOS REIS ◽  
Bogdan CAZACLIU ◽  
Riccardo ARTONI ◽  
Jean-Michel TORRENTI ◽  
Carlos S. HOFFMANN ◽  
...  

2014 ◽  
Vol 919-921 ◽  
pp. 1817-1820 ◽  
Author(s):  
Zeng Feng Zhao ◽  
Peng Fei Jin ◽  
Qian Qian Zhao

Very large quantities of construction and demolition wastes and especially concrete wastes are produced yearly. Up to now, only a small fraction of these concrete wastes is re-used as recycled concrete aggregates (RCA) for the manufacture of concrete. In order to make good use of RCA in the concrete, it is very important to study the influence factor of the properties of RCA. In this paper, the influence of laboratory accelerated carbonation on the properties of recycled concrete aggregates has been studied. The results show that after the laboratory accelerated carbonation, the harden cement paste content of RCA measured by salicylic acid dissolution decreases, the density and specific surface area of RCA increase, and the porosity of RCA decreases, which leads to the reduction of water absorption of RCA.


Author(s):  
Zengfeng Zhao ◽  
Sébastien Remond ◽  
Denis Damidot ◽  
Luc Courard ◽  
Frédéric Michel

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