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Simulation of expansive stress in cement-based materials subjected to sulfate attack Yin Guangji1, a, Zuo Xiaobao2,b ,Sun Xianghua3, c ,Tang Yujuan4,d 1 Nanjing University of Science & Technology, Nanjing 210094, China 2 Nanjing University of Science & Technology, Nanjing 210094, China 3 Nanjing University of Science & Technology, Nanjing 210094, China 4 Nanjing University of Science & Technology, Nanjing 210094, China a YinXJlove@163.com, b xbzuo@sina.com, c sxianghua@sina.com, d tyjdsr19891103@163.com Keywords: Sulfate attack; Cement-based material; Mechanics analysis model; Equivalent stress; Crystallization stress Abstract: For the volume expansive of cement-based materials subjected to sulfate attack, based on microporous mechanics, the model of representative volume element(RVE) is established to analyze the distribution of microcosmic expansive stress in RVE.
The relationship of RVE macroscopic Fig 4 The relationship of RVE macroscopic equivalent stress and the ettringite concentration equivalent stress and the initial porosity Summary This paper analyzes the macroscopic equivalent stress of RVE, which provides the basic for the analysis of equivalent elastic modulus of cement-basic materials under sulfate attack.
Long: Journal of the Chinese Ceramic Society Vol. 35(10) (2007), p. 1376-1381
[6] Jin Zuquan, Sun Wei and Zhang Yunsheng: Journal of the Chinese Ceramic Society 2006 Vol. 34(5), p. 630-635
[7] Zuo Xiaobao and Sun Wei: Journal of the Chinese Ceramic Society Vol. 37(7) (2009), p. 1063-1067

E-mail: wangfei36777@163.com Keywords: inorganic materials, experimental teaching, mineral materials Abstract.
Introduction The innovation in material science is the key to promote the progress of human history; therefore China is paying more and more attention to the development and applications of new materials.
How to develop the expertise of students in material science and increase their English proficiency is the focus of inorganic material specialty English teaching.
Girgin: Turkish Journal of Chemistry, Vol. 26(2002), p.431 [13]A.
Muromtsev: Inorganic Materials, Vol. 26(1990), p.104

The complex stress function method is used in this study to formulate the 2-dimensional problem for nonhomogeneous materials.
Introduction Functionally graded materials (FGMs) are formed with continuously varying properties in a certain direction.
Miyamoto: Functionally Graded Materials, Proceedings of the Fourth International Symposium on Functionally Graded Materials, Elsevier, Amsterdam, (1997)
Erdogan: The crack problem for the bonded nonhomogeneous materials under antiplane shear loading, ASME Journal of Applied Mechanics Vol. 52 (1985), p. 823
Noda: International Journal of Engineering Science 31, (1993), p. 793

Acknowledgements We would like to acknowledge the financial support of the National Natural Science Foundation of China (50905051and 50805042) and Natural Science Foundation of Zhejiang Province (Y1080004).
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Xiang: Journal of Zhejiang University - Science A Vol. 8 (2007), p. 1059-1064(in Chinese)
Sun: Journal of Magnetism and Magnetic Materials Vol. 309 (2007), p. 263-271
Zucca: Journal of Magnetism and Magnetic Materials Vol. 320 (2008), p. e915-e919.

Degradation of optical properties occurs during recycling processes of plastic materials and the declining properties of recycled products could be improved by blending them with virgin materials.
Kamaruddin, Optimization of mechanical properties of recycled plastic products via optimal processing parameters using the Taguchi method, Journal Materials Processing Technology, Vol. 211 no. 12 (2011) 1989–1994
Maddah, Polypropylene as a Promising Plastic: A Review, American Journal of Polymer Science, Vol. 6 no. 1 (2016) 1–11
Endthen, Material value conservation: Development of design criteria for rigid plastic packaging, Material Science Forum, Vol. 936 MSF (2018) 110–115
Wilkes, A comprehensive investigation of the origins of surface roughness and haze in polyethylene blown films, Journal of Applied Polymer Science, Vol. 85 no. 11 (2002) 2396–2411

Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, Nizhny Novgorod 603950, Russian Federation akaterina_k1997@mail.ru, bildnv235@gmail.com, croman@iomc.ras.ru, dsmirnova_la@mail.ru Keywords: starch, acrylamide, chitosan, three-dimensional materials, porosity, sorbent, sorption, packing material Abstract.
The resulting material is promising as a sorbent of heavy metal ions and packing materials for transportation and storage.
A recognized disadvantage of starch-based materials is their sensitivity to moisture.
For creation of foamed materials based on it, it is necessary to obtain a water-soluble form.
Starch-based Biodegradable Materials: Challenges and Opportunities.

Perianu, Development of Green Cementitious Materials by Using the Abrasive Waterjet Garnet Wastes: Preliminary Studies, Advanced Materials Research 1164 (2021) 87-96 [10] K.
Materials Today: Proceedings (2021) [17] L.
Yusoff, Structural Performance Assessment of High Strength Concrete Containing Spent Garnet under Three Point Bending Test, IOP Conference Series: Materials Science and Engineering 1144(1) (2021, May) 012018 [25] M.
Journal of Advanced Research in Materials Science, 43(1), 22-27
In IOP Conference Series: Materials Science and Engineering (Vol. 365, No. 3, p. 032025).

Analysis of Thermal residual stresses in TiC coatings on gradient cemented carbide [J], Journal of Sichuan University (Engineering Science Edition), 2012, 1
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Computer Modeling of the Process of Synthesis of Porous Glass-Composite Materials L.A.
Research Journal of Pharmaceutical, Biological and Chemical Sciences. 7 (5) (2016) 1073-1081
IOP Conference Series: Materials Science and Engineering. 262 (2017) 012020
Research Journal of Pharmaceutical, Biological and Chemical Sciences. 7 (6) (2016) 136-146
Materials Science Forum. 843 (2016) 183-188

Effect of Same Insulation Materials on Energy-Saving Potential of Different Buildings Chang Guo, Jian Yao* Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, China email: yaojian@nbu.edu.cn Keywords: Energy-saving materials；energy-saving rate；building shape coefficient.
This paper analyzed the effect of same insulation materials on energy-saving potential of three different buildings by using the energy simulation program DOE-2.
Yuan, “Study on Residential Buildings with Energy Saving by 65% in Ningbo,” Journal of Ningbo University (Natural science & engineering edition).vol. 23, pp. 84-87, 2010
[5] HU Xing-yun, XU Jin and ZHANG Jin-quan, “Study on the Modern Rural Residence Planning with Regional Features of Fanshidu Village,” Journal of Ningbo University (Natural science & engineering edition), vol. 24, pp. 110-114, 2011
[8] GAO Hua-sheng, YANG Xiao-xian and CHEN Yu –hui et al., “Water Pollution Control in Rural Villages: Case Study,” Journal of Ningbo University (Natural science & engineering edition), vol.23, pp.74-78, 2010