Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar

doi:10.1016/j.cscm.2023.e02332

	Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar
	Wang, Hao 1; Jiang, Minghui 2; Hang, Meiyan 1; Zhou, Gangming 3; Sun, Mengjie 1; Liu, Xiangju 4
	2023-12-01
发表期刊	CASE STUDIES IN CONSTRUCTION MATERIALS
ISSN	2214-5095
卷号	19 页码:16
通讯作者	Jiang, Minghui([email protected])
摘要	The purpose of this study is to use aeolian sand obtained from Inner Mongolia to partially replace quartz sand as fine aggregate to prepare 3D printed mortar to solve the scarcity problems of quartz sand resources in northwestern China. The mechanical properties tests (including flexural strength, compressive strength, tensile bond strength and axial compression tests) and frost resistance tests of cast specimens and printed mortar specimens in the X, Y and Z directions (abbreviated as CS, PS-X, PS-Y and PS-Z) were investigated. Furthermore, their microscopic morphology and pore structure parameters were compared and analyzed using scanning electron microscopy (SEM) and low field nuclear magnetic resonance (NMR), respectively. The results showed that the flexural strength and compressive strength of the samples following the inclined cross-path were superior to those following the Z-shaped path specimens. The tensile bonding strength of the CS, PS-X, PS-Y and PS-Z exhibited that F-3 > F-3X > F-3Z > F-3Y, and the peak stress was observed as F-4X > F-4 > F-4Z > F-4Y. This was attributed to the cement hydration of CS and PS-X being more sufficient than those of PS-Y and PS-Z. Furthermore, freezing-thawing cycles accelerated the degradation of aeolian sand 3D printed mortar specimens, increased their weight loss rate and porosities, as well as reduced relative dynamic modulus of elasticity. The porosities of specimens were as follows: PS-Y > PS-Z > PS-X > CS, and the porosity of PS-Y was 97.62 %, 36.07 % and 10.67 % higher than those of CS, PS-X and PS-Z, respectively. The significance of this research is to provide technical guidance and basis for the application of aeolian sand in 3D printed mortar in the future.
关键词	Aeolian sand 3D printed mortar Mechanical properties Frost resistance Freezing -thawing damage mechanism
DOI	10.1016/j.cscm.2023.e02332
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52168033]; Shandong Provincial Natural Science Foundation[ZR2022QB128]; Self Fund Project of Langfang Science and Technology[2023011046]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:001050743700001
出版者	ELSEVIER
WOS关键词	HARDENED PROPERTIES ; CONCRETE ; CONSTRUCTION ; DETERIORATION ; PERFORMANCE ; GEOPOLYMER ; COMPOSITE ; STRENGTH
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182850
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Jiang, Minghui
作者单位	1.Inner Mongolia Univ Sci & Technol, Sch Civil Engn, Baotou 014010, Inner Mongolia, Peoples R China 2.Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China 3.Beijing Railway Sci Shougang Rail Technol Co Ltd, Beijing 102206, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Jiang, Minghui,Hang, Meiyan,et al. Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar[J]. CASE STUDIES IN CONSTRUCTION MATERIALS,2023,19:16.
APA	Wang, Hao,Jiang, Minghui,Hang, Meiyan,Zhou, Gangming,Sun, Mengjie,&Liu, Xiangju.(2023).Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar.CASE STUDIES IN CONSTRUCTION MATERIALS,19,16.
MLA	Wang, Hao,et al."Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar".CASE STUDIES IN CONSTRUCTION MATERIALS 19(2023):16.

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