Freeze-Proof Durability of Concrete Incorporating Recycled Coarse Aggregate

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Deng Xianghui Xue Liyuan Wang Rui Gao Xiaoyue
Abstract	The recycle of the building and demolition waste could reduce project expenses and save natural resources as well as solve problem about environmental risks incurred during the disposal of building waste. In this study, waste C30 concrete is taken an experimental material. The mass loss, ultrasonic velocity, dynamic modulus of elasticity and cubic compressive strength of recycled coarse aggregate concrete whose coarse aggregate replacement percentage is 25%, 50%, 75%, and 100% are tested and compared with NAC when the cycles of freezing and thawing are 0, 25, 50, 75, 100, 125, 150, 175, and 200 times. The results show: (1) Generally, the loss of mass, ultrasonic velocity, dynamic modulus of elasticity and cubic compressive strength constantly increase with the growth of freezing and thawing cycles. (2) Compared with the recycled concrete of other replacement percentages, the RAC50 shows relatively close performance to NAC in mass loss, the change of dynamic modulus of elasticity and cubic compressive strength. (3) Performances of RAC25 specimens are better than the other RAC specimens for the ultrasonic wave velocity.
Related Links	http://www.degruyter.com/view/j/ace.2019.65.issue-4/ace-2019-0047/ace-2019-0047.xml?format=INT
ISSN	12302945
e-ISSN	23003103
DOI	10.2478/ace-2019-0047
Journal	Archives of Civil Engineering
Issue Number	4
Volume Number	65
Language	English
Publisher	Polish Academy of Sciences
Publisher Date	2019-01-01
Publisher Place	Poland
Access Restriction	Open
Subject Keyword	Engineering (General). Civil engineering (General) Recycled Coarse Aggregate Concrete Freeze-thaw Cycles Freeze-proof Durability Investigation
Content Type	Text
Resource Type	Article
Subject	Civil and Structural Engineering