中国科学院机构知识库网格系统: The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC)

The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC)

文献类型：期刊论文


作者	Li, Tianyu 1; Sun, Xin2 ; Shi, Fangying 3; Zhu, Zheng 1; Wang, Dezhi 4; Tian, Huiwen 2; Liu, Xiaoyan 5; Lian, Xunhuan 5; Bao, Tengfei 1; Hou, Baorong 2
刊名	POLYMERS
出版日期	2022-08-01
卷号	14 期号:15 页码:23
关键词	sea sand polymer cement mortar UHPC anticorrosion analysis material characterization X-CT
DOI	10.3390/polym14153105
通讯作者	Sun, Xin(sunxin@qdio.ac.cn) ; Bao, Tengfei(baotf@hhu.edu.cn)
英文摘要	There are abundant sea-sand resources on the earth. Traditional sea-sand concrete faced various problems relating to insufficient anticorrosion ability. In this paper, artificial seawater, sea sand, industrial waste, steel fiber, and polycarboxylate superplasticizer were used to prepare ultra-high-performance polymer cement mortar (SSUHPC). At the same time, freshwater river-sand ultra-high-performance polymer cement mortar (FRUHPC) with the same mixing ratio was prepared for comparative study. The compressive strength of SSUHPC reached 162.1 MPa, while the that of FRUHPC reached 173.3 MPa, which was slightly higher. Meanwhile, SSUHPC showed excellent anticorrosion characteristics in terms of carbonization, frost resistance and chloride resistance, and especially for sulfate resistance. The composition of SSUHPC was separated into three parts: mortar, pore and steel fiber, and the performance difference mechanisms of SSUHPC and FRUHPC were investigated by X-ray computed tomography (X-CT), mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The hydration degree of mortar in SSUHPC was higher, with higher content of CSH and CH, and its better optimized gel pore characteristics gave SSUHPC better corrosion resistance. The mechanical properties of SSUHPC were slightly poor due to the uneven dispersion of steel fibers and air pores, with an- air pore porosity of 1.52% (above 200 mu m) that was twice that of FRUHPC (0.6%). In this paper, the mechanics and anticorrosion performance of ultra-high-performance polymer cement mortar prepared with seawater sea sand were comprehensively evaluated, and the mechanism of performance difference between SSUHPC and FRUHPC was revealed, conducive to the targeted improvement of sea sand concrete.
资助项目	Shandong Key Laboratory of Corrosion Science, China, Wenhai Program of the S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021WHZZB2305] ; National Natural Science Foundation of China[41827805] ; National Natural Science Foundation of China[U2243223] ; National Natural Science Foundation of China[51879093] ; National Natural Science Foundation of China[51968060]
WOS研究方向	Polymer Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000839139700001
源URL	[http://ir.qdio.ac.cn/handle/337002/179916]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Sun, Xin; Bao, Tengfei
作者单位	1.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China 4.Ningxia Univ, Sch Civil & Hydraul Engn, Yinchuan 750021, Ningxia, Peoples R China 5.Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Li, Tianyu,Sun, Xin,Shi, Fangying,et al. The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC)[J]. POLYMERS,2022,14(15):23.
APA	Li, Tianyu.,Sun, Xin.,Shi, Fangying.,Zhu, Zheng.,Wang, Dezhi.,...&Hou, Baorong.(2022).The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC).POLYMERS,14(15),23.
MLA	Li, Tianyu,et al."The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC)".POLYMERS 14.15(2022):23.

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来源：海洋研究所

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The Mechanism of Anticorrosion Performance and Mechanical Property Differences between Seawater Sea-Sand and Freshwater River-Sand Ultra-High-Performance Polymer Cement Mortar (UHPC)

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