Evaluation of aggregates, fibers and voids distribution in 3D printed concrete

doi:10.1080/21650373.2022.2113168

CORC > 兰州理工大学 > 兰州理工大学

	Evaluation of aggregates, fibers and voids distribution in 3D printed concrete
	Zhang, Yu 4,5,6,7; Zhang, Yunsheng 4,5,6,7; Yang, Lin 3; Liu, Guojian 2; Du, Hongjian 1
刊名	JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
	2022-08-01
关键词	3D printed concrete Additive manufacturing Orientation distribution X-CT Anisotropy
ISSN号	2165-0373
DOI	10.1080/21650373.2022.2113168
英文摘要	3D printed concrete technology has received a traffic attention in construction industry in recent years, due to the potential advantage: time and labor savings, cost reduction, low environmental impact. In this study, the influence of distribution of aggregate and steel fiber on the mechanical properties of 3 D printed concrete is experimentally investigated. The distribution characteristic of aggregate and steel fiber in 3 D printed concrete are evaluated by using X-ray computed tomography (X-CT) with 2 D image analysis method. The cast concrete is performed as reference. It is found that the aggregate and fiber in cast concrete are relatively evenly distributed and no alignment, while there is an orientation probability of more than 40% for aggregate, and 74% for fiber, respectively, along the printing direction in +/- 20 degrees in printed concrete. Meanwhile, using X-CT, the porosity, void sizes, shapes and distributions in printed and cast concrete are also investigated. Furthermore, it is observed that the printed and cast samples comprise of different voids, due to the different construction processes. Finally, the results prove that the performance difference for the printed concrete at different directions possibly depends on the orientation distribution of the aggregate/fiber, as well as the irregular voids, since the aggregates/fibers are orientated by the nozzle along the printing direction.
WOS研究方向	Construction & Building Technology ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000843114900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159860]
专题	兰州理工大学
作者单位	1.Natl Univ Singapore, Dept Civil & Environm Engn, Singapore, Singapore 2.Suzhou Univ Sci & Technol, Sch Civil Engn, Suzhou, Peoples R China; 3.Zhengzhou Univ, Sch Water Conservancy Engn, Zhengzhou, Peoples R China; 4.Collaborat Innovat Ctr Adv Civil Engn Mat, Nanjing, Peoples R China; 5.Southeast Univ, Sch Mat Sci & Engn, Nanjing, Peoples R China; 6.Engn Res Ctr Adv Civil Engn Mat, Lanzhou, Peoples R China; 7.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Peoples R China;
推荐引用方式 GB/T 7714	Zhang, Yu,Zhang, Yunsheng,Yang, Lin,et al. Evaluation of aggregates, fibers and voids distribution in 3D printed concrete[J]. JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS,2022.
APA	Zhang, Yu,Zhang, Yunsheng,Yang, Lin,Liu, Guojian,&Du, Hongjian.(2022).Evaluation of aggregates, fibers and voids distribution in 3D printed concrete.JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS.
MLA	Zhang, Yu,et al."Evaluation of aggregates, fibers and voids distribution in 3D printed concrete".JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS (2022).