INORGANIG MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Preparation and Critical Performances of Lightweight Insulation High Ductility Cementitious Composites |
DING Cong1, GUO Liping1,2,3, LEI Dongyi1, XU Yanhui1, ZHU Yu1, DENG Zhonghua4
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1 School of Materials Science and Engineering, Southeast University, Nanjing 211189 2 Jiangsu Key Laboratory of Construction Materials, Nanjing 211189 3 Collaborative Innovation Center for Advanced Civil Engineering Materials, Nanjing 211189 4 Baohua Lin Industrial Development Co., Ltd., Yongan 366000 |
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Abstract Lightweight insulation and high ductility cementitious composites (LIHDCC), which density grade reach A10 and strength grade reach C20, were prepared in this study. Mechanical properties, thermal conductivity, uniaxial tensile properties, fiber/matrix interface bonding properties, frost resistance, chloride ion penetration resistance and pore structure were studied. The volume fractions of PVA fiber were 1.5% and 2%. The results showed that the compressive strength decreases with the increase of fiber content, but all could reach C20. The thermal conductivity reached 0.08 W/(m·K) and 0.10 W/(m·K), the ultimate tensile strain reached 0.72% and 0.85%. The average chemical bonding force of single fiber was 6.92 J/m2, the frictional force and slip hardening coefficient were 1.25 MPa and 0.42, respectively. LIHDCC have good resistance for chloride ion penetration and freezing thawing. Finally, the pore structure of LIHDCC was analyzed by CT. The average diameter of the evenly distributed bubbles was about 0—1 mm.
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Published: 16 May 2019
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Fund:This work was financially supported by the National Key Research & Development Project of China (2016YFC0401610), National Natural Science Foundations of China (51378113, 51778133), National Basic Research Program of China (973 Program, 2015CB655102), Plan of Six Peak Talents in Jiangsu Pro-vince (JZ-004). |
About author:: Cong Ding, Ph. D. candidate, School of Materials Science and Engineering, Southeast University. The main research interests are about high ductility cementitious composites (HDCC). Liping Guo received her M.E. degree and Ph.D. degree in Materials Science from the Southeast University (SEU) in Sep. 2002—Jun. 2008, and performed research as a co-supervised Ph.D. student supported by China Scholarship Council from Jan. 2007 to Feb. 2008 in Department of Civil Engineering, University of Parma, Italy. She is currently an associate professor and doctoral supervisor in SEU. She was selected for “the Six Talent Peaks project in Jiangsu Province” in 2015 and “the ‘333' project in Jiangsu Province” in 2018. She is also holding some concurrent posts in many societies, e.g. deputy director general of CCPA, member of RILEM TC-SRT committee, director general of RILEM China Branch, member of CCES, and reviewer of some academic journals. Her research interests focus on the design theory and technology of novel fiber reinforced concrete as well as the durability of cement-based composites. She has taken charge of more than ten scientific research projects, and has published more than 70 journal papers and 18 papers were cited by web of science and applied 40 national invention patents and 13 of them were authorized. She won one Second Class Prize of the Excellent Achievement Award for science and technology progress awarded by the Ministry of Education of China, and one Second Class Prize of the Excellent Achievement Award for science and technology progress awarded by the China Railway Society. |
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1 Chen S Y.China Concrete and Cement Products, 2013, 6(6), 47(in Chinese). 程顺义.混凝土与水泥制品, 2013, 6(6), 47. 2 Zhou M J, Wang N N, Zhao X Y, et al.Concrete, 2009(4),104(in Chinese). 周明杰, 王娜娜, 赵晓艳,等.混凝土, 2009(4),104. 3 Qiu J F, Luo S X, Lu H, et al. Bulletin of the Chinese Ceramic Society, 2013, 32(2),189(in Chinese). 邱军付, 罗淑湘,鲁虹,等.硅酸盐通报, 2013, 32(2),189. 4 Song B, Gong J, Yu S J, et al.Journal of Henan Polytechnic University (Natural Science), 2010, 29(3), 402(in Chinese). 宋斌,龚健,于水军, 等.河南理工大学学报(自然科学版), 2010, 29(3), 402. 5 Wang S, Wu C, Li V C. ACI Materials Journal, 2001, 98 (6),483. 6 Kudyakov A I , Steshenko A B.Advanced Materials Research, 2015, 1085,245. 7 Wang C Q, Tan K F, Xu X X. Journal of Southwest University of Science and Technology, 2013, 28(3), 11 (in Chinese). 王朝强,谭克锋,徐秀霞.西南科技大学学报, 2013, 28(3),11. 8 Zhan B G, Guo J L, Lin X S, et al. Journal of Hefei University of Technology (Natural Science), 2009, 2(2),226(in Chinese). 詹炳根,郭建雷,林兴胜.合肥工业大学学报(自然科学版), 2009, 2(2), 226. 9 Chen B, Liu J.Journal of Building Materials, 2010, 13(3), 286(in Chinese). 陈兵,刘睫. 建筑材料学报, 2010, 13(3), 286. 10 Lin X S. Development and properties of foamed concrete with fiber reinforcement. Master's Thesis, Hefei University of Technology, China, 2007 (in Chinese). 林兴胜.纤维增强泡沫混凝土的研制与性能. 硕士学位论文, 合肥工业大学, 2007. 11 Zhang Y F. Study on process of polypropylene fiber reinforced fly ash foam concrete. Master's Thesis, Chang'an University, China, 2007 (in Chinese). 张艳锋.聚丙烯纤维增强粉煤灰泡沫混凝土的工艺研究. 硕士学位论文,长安大学, 2007. 12 Jiang H. The study oil producing paddy fiber cement foamed heat preserivation wall material. Master's Thesis, Dalian University of Technology, China, 2008 (in Chinese). 姜欢.稻草纤维生产水泥基泡沫保温墙体材料的研究. 硕士学位论文, 大连理工大学, 2008. 13 Zhao X, Huo J C, Gao Y, et al.China Concrete and Cement Products, 2012(12),54(in Chinese). 赵星,霍冀川,高亚, 等.混凝土与水泥制品, 2012(12), 54. 14 Ministry of Housing and Urban-Rural Development of the People's Republic of China. GB 50010-2010 Code for Design of Concrete Structures, China Building Industry Press, China,2015. 中华人民共和国住房和城乡建设部. GB 50010-2010 混凝土结构设计规范, 中国建筑工业出版社, 2015. 15 Redon C, Li V C, Wu C, et al.Journal of Materials in Civil Engineering, 2001, 13(6),399. 16 Yang E H, Wang S, Yang Y, et al.Journal of Advanced Concrete Techno-logy, 2008, 6(1),181. 17 Wang S, Li V C.ACI Materials Journal, 2007, 104(3),233. 18 Lin Z, Kanda T, Li V C.Materials & Structures, 2011, 1,173. 19 Cai L, Chen T L, Wang H.Housing Materials & Applications, 2006, 34 (3),1(in Chinese). 蔡路,陈太林,王浩. 建筑节能, 2006, 34 (3),1 |
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