Experimental study on bond slip behavior of ordinary and high strength recycled concrete and steel bars - Details

Author：

Cao, Wanlin (Cao, Wanlin.) (Scholars：曹万林) | Liu, Xi (Liu, Xi.) | Qiao, Qiyun (Qiao, Qiyun.) | Tian, Zhi (Tian, Zhi.) | Lin, Dongzhao (Lin, Dongzhao.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

Bond　slip　relationship　between　steel　bars　and　recycled　concrete　is　one　of　the　key　problems　in　the　design　of　recycled　concrete　members.　A　total　of　49　reinforced　recycled　concrete　specimens　were　designed　and　tested　using　the　pull-out　test　methods　to　study　the　bond　slip　relationship　between　steel　bars　and　recycled　concrete.　The　specimen　size　is　150　mm×150　mm×450　mm.　Design　parameters　of　specimen　are　steel　bar　diameters　(10,14,20　mm),　type　of　steel　bar　(plain,　deformed),　anchorage　length　of　steel　bar　(5d,10d,20d),　recycled　coarse　aggregate　replacement　ratio　(33%,66%,100%),　recycled　fine　aggregate　replacement　ratio　(50%,100%)　and　concrete　design　strength　(medium　strength,　high　strength).　The　results　show　that:　the　recycled　coarse　or　fine　aggregate　replacement　ratio,　concrete　strength,　steel　bar　type　and　anchorage　length　are　the　main　influence　factors　on　the　bond　slip　behavior.　The　bond　slip　behavior　decreases　when　the　recycled　fine　aggregate　replacement　ratio　is　over　50%.　Comparing　with　the　normal　concrete　specimens,　the　bond　efficiency　ratio　of　the　recycled　coarse　concrete　increases　obviously.　©　2016,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.

Keyword：

Concrete aggregates Recycling Aggregates High performance concrete Anchorages (foundations) Bond strength (materials) High strength steel Bars (metal) Testing Anchorages (concrete construction) Efficiency

Author Community：

[ 1 ] [Cao, Wanlin]Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Cao, Wanlin]Beijing Collaborative Innovation Center for Metropolitan Transportation, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Liu, Xi]Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Qiao, Qiyun]Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Tian, Zhi]Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Lin, Dongzhao]Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China