Title :
Experiment study on drying shrinkage deformation of recycled aggregate concrete
Author :
Guo Yuan-chen ; Wang Xue ; Sun Ke-wei ; Cheng Long-fei
Author_Institution :
Dept. of Archit. Eng., Chongqing Three Gorges Univ., Chongqing, China
Abstract :
Drying shrinkage deformation is one of the most important reasons which causes cracking of concrete materials. Mix design of C30 natural aggregate concrete(NAC) is used as reference, the experiment of drying shrinkage considering the influence of recycled aggregate replacement ratio and mixing amount of fly ash, water reducer, and expansive agent was made. The results show that: In the case of fixed amount of mixing water and cement content, the addition of water reducing agent and recycled aggregate increase the shrinkage deformation of recycled aggregate concrete(RAC); to a certain extent, the addition of fly ash can inhibit the shrinkage deformation of RAC; with the addition of expansive agent, the shrinkage deformation of RAC significantly reduce, and this inhibitory effect is stronger than fly ash´s.
Keywords :
aggregates (materials); concrete; cracks; deformation; drying; fly ash; fracture; recycling; shrinkage; C30 natural aggregate concrete; concrete materials; cracking; drying shrinkage deformation; fly ash; recycled aggregate concrete; Aggregates; Concrete; Electronic mail; Fly ash; Water conservation; drying shrinkage deformation; experiment study; recycled aggregate; recycled aggregate concrete;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5776036