An Experimental Study on the Workability of Recycled Fine Aggregate Concrete Cement Mortar

Author(s):  
Guest Editor Jianping Du
2010 ◽  
Vol 168-170 ◽  
pp. 2129-2133
Author(s):  
Zheng Wen Zhang ◽  
Li Sha Ma ◽  
Xu Chao Chi ◽  
Huan Li Wang ◽  
Xiao Yi Wang ◽  
...  

In order to effective utilize of recycled fine aggregate concrete (RFAC), it is necessary to clearly understand its behavior and characteristic. In this paper, experimental study on crack behavior of RFAC was conducted with different curing ages. Ratio of its cracking load to ultimate load was analyzed in detail. Experiment shows that this ratio is about 0.8 and is not sensitive to curing age. Comparison to traditional concrete was performed. The result of this paper is helpful to theoretical analysis and practical engineering design of RAC structures.


1998 ◽  
Vol 9 (1) ◽  
pp. 87-97
Author(s):  
Shigeharu Nakamura ◽  
Yoshihiro Masuda ◽  
Noriko Oshitani ◽  
Michihiko Abe

2012 ◽  
Vol 253-255 ◽  
pp. 432-435
Author(s):  
Jiu Su Li ◽  
Chun Li Qin

Fine aggregate can be extracted from waste concrete by series of processing. The recycled fine aggregate can then be utilized to manufacture recycled fine aggregate mortar (RFAM) or recycled fine aggregate concrete (RFAC). Air entraining agent was added in RFAM to improve its mechanical performance. The influence of the dosage of the air entraining agent on both the compressive and flexural strength of the RFAM was explored after 7 days and 28 days curing. The optimum dosage of the air entraining agent was determined.


2018 ◽  
Vol 760 ◽  
pp. 193-198 ◽  
Author(s):  
Kristina Fořtová ◽  
Tereza Pavlů

This paper presents research results of recycled fine aggregate concrete testing. The main aim of this contribution is verification of properties of fine aggregate concrete with partial replacement of fine natural aggregate by recycled masonry aggregate originated from construction and demolition waste. The influence of partial replacement of natural sand to mechanical properties and freeze-thaw resistance is described. The compressive strength and flexural strength were tested at the age of 28 and 60 days and after 25, 50, 75 and 100 freeze-thaw cycles. Partial replacement of natural sand was 0, 25 and 50 % for all these tests. Prismatic specimens were examined.


2012 ◽  
Vol 446-449 ◽  
pp. 2028-2032
Author(s):  
Jian Geng ◽  
Yong Yong Chen ◽  
Jia Ying Sun ◽  
Wei Chen

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