Research on the Effect of Desert Sand on Pore Structure of Fiber Reinforced Mortar Based on X-CT Technology

doi:10.3390/ma14195572

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	Research on the Effect of Desert Sand on Pore Structure of Fiber Reinforced Mortar Based on X-CT Technology
	Shi, Fangying 1; Li, Tianyu 2; Wang, Weikang 3; Liu, Ruidan 2; Liu, Xiaoyan 2; Tian, Huiwen 4; Liu, Nazhen 4
刊名	MATERIALS
	2021-10-01
卷号	14 期号:19 页码:17
关键词	desert sand X-CT MIP pore structure porosity mechanical property
DOI	10.3390/ma14195572
通讯作者	Li, Tianyu(170408070004@hhu.edu.cn) ; Liu, Nazhen(liunazhen@qdio.ac.cn)
英文摘要	Concrete is a multi-phase, porous system. The pore structure has an important influence on the properties of the concrete. In this paper, a kind of fiber reinforced mortar was prepared with desert sand and its pore structure was studied. The MIP technique was used to investigate the pore structure characteristics between 1 nm and 500 mu m (in diameter). Meanwhile, the mu X-CT technique was used to study the pore structure characteristics above 200 mu m. It was found that the total porosity tends to decrease first and then increase as the dosage of desert sand increased. The porosity decreased gradually from the upper to bottom area inside the sample, and the diameter of the air voids near the upper area became larger. After curing for 28 days, the compressive strength of fiber reinforced mortar reached the maximum when the content of desert sand was 50%. In conclusion, the appropriate amount of desert sand can reduce the porosity of the fiber reinforced mortar to some extent and the number of large size air voids can be significantly reduced, which improves the pore structure and the mechanical properties of the fiber reinforced mortar.
资助项目	National Natural Science Foundation of China[518037611] ; National Natural Science Foundation of China[51968060] ; Ningxia Hui Autonomous Region key research and development plan[2018BFH03003] ; First Class Discipline Project of Ningxia Higher Education Institution[NXYLXK2021A03]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000727379200001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177479]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Li, Tianyu; Liu, Nazhen
作者单位	1.Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China 2.Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China 3.Wuhan Univ, Sch Water Resources & Hydropower Engn, Wuhan 430070, 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	Shi, Fangying,Li, Tianyu,Wang, Weikang,et al. Research on the Effect of Desert Sand on Pore Structure of Fiber Reinforced Mortar Based on X-CT Technology[J]. MATERIALS,2021,14(19):17.
APA	Shi, Fangying.,Li, Tianyu.,Wang, Weikang.,Liu, Ruidan.,Liu, Xiaoyan.,...&Liu, Nazhen.(2021).Research on the Effect of Desert Sand on Pore Structure of Fiber Reinforced Mortar Based on X-CT Technology.MATERIALS,14(19),17.
MLA	Shi, Fangying,et al."Research on the Effect of Desert Sand on Pore Structure of Fiber Reinforced Mortar Based on X-CT Technology".MATERIALS 14.19(2021):17.