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Toughness Properties of Concrete Modified with Water-borne Polyurethane Bei Ding1, a, Xia Zhang2, b, Dongling Zhou2, c and Chanwen Miao3, d 1Jiangsu Research Institute of Building Science, Nanjing, China 2 Jiangsu Bote New materials Co., Ltd., Nanjing, China 3The National Key Laboratory of High Performance Building Materials, Nanjing, China adingbei@cnjsjk.cn, bzhangxia@cnjsjk.cn, czhoudongliang@cnjsjk.cn, dmcw@cnjsjk.cn Keywords: water-borne polyurethane; concrete toughness; fracture energy; early plastic cracking resistance; impact resistance.
The following materials and mix proportions were utilized to form concrete.
Admixtures: polycarboxylic acid superplasticizer and polyether defoaming agent were purchased from Jiangsu Bote New Materials Co., Ltd., China.
The shape of curve is still a typical characteristc of brittle materials, whether modified by PUA or not.
[4] Yoshihiko Ohama, Recent progress in concrete-polymer composites, Advanced Cement Based Materials, 5 (1997) 31-40

The introduction of CZ and MA facilitates arrangement to manufacturing features and is the foundation of recognition and syntheses of dimension chain automatically in 3D scene. 2.2 Sub-model for 3D model based process The machining is a series of material removing, according to which the shape and size of part is continuously changed from stock material to final part.
Our future works might be focused on: (1) 3D modeling for part's stock material.
Methodology on this paper assumes that the stock material is existed and inputted into algorithm.
Beijing: China Science Press, 2009.5 [12] Fang Xiang, Peng Qun-Sheng.
Journal Of computer Aided Design And Computer Graphics, Vol.12, No.8, Aug, 2000 [13] R.

These materials present self-lubricating properties that make dry machining the best option.
Other materials such as mild steels can be dry machined with the assistance of air for chip removal.
Rizzo et al., “The critical raw materials in cutting tools for machining applications: A review,” Materials, 13 (2020) 1377
CUI et al., “Minimum quantity lubrication machining of aeronautical materials using carbon group nanolubricant: From mechanisms to application,” Chinese Journal of Aeronautics. 35 (2022) 85–112
Dixit, “Mechanism of Nanoparticles functioning and Effects in Machining Processes: A review,” in Materials Today: Proceedings. 2 (2015) 3539–3544

Material and Methods Study Area.
Ma: Journal of Soil and Water Conservation, Vol. 25 (2011) No. 1, p.105.
Zhang: Environmental Science & Technology, Vol. 31 (2008) No. 2, p.112.
Lv: Ecology and Environmental Sciences, Vol. 19 (2010) No.4, p. 985.
Zhang: Environmental Science Survey, Vol. 28 (2009) No.2, p. 37.

Low carbon economy is a kind of dynamic and complex problem which involves many kinds of aspects such as economy, culture, population, science and technology, environment, resources.
Develop a whole production system from resources development, raw material productions, and intermediate productions to finalproducts. 
References [1]YangxiaoOu,LiangjianWang.Evolution of the Regional EconomicSystem and the Frontier Problem[M],.Beijing: Economic Science Press, 2011
Journal of Guangdong Agriculture Science, 2012, 01:212-216
Science and Technology Management Research,2012,21:61-65.

Study on Methods of Re-development of Urban Old Settlements from View Point of “Well-being of People’s Livelihood” Chaojun Chen 1, a, Chenguang Wang 2, b and Yaozhi Huang3, c 1 Suzhou city planning bureau, Jiang Su, China 2 Suzhou University of Science and Technology, Jiang Su, China 3 Corresponding author, Suzhou University of Science and Technology, Jiang Su, China a82547545@qq.com, b112593474@qq.com, chpxxx007@163.com Key words: Welling of People’s Livelihood, Old Settlements, Redevelopment Abstract.
[3] Denis Goulet, Development Ethics［M］Beijing: Social Sciences Academic Press, 2003
China Social Sciences Press. 2005 (In Chinese) [6] John Rawls.
Beijing: China Social Sciences Press. 1988
Shenzhen University Journal (Humanities & Social Sciences). 2010 (In Chinese) [9] Wen Hong.

Design and Procedure of Experiment Experiment Material.
The 20L collapsible fabric tank is chose as material.
Analysis of aging theory about flexible tank polyurethane material by American army[J].
Synthetic Material Aging and Application, 2001，2:40-41
Journal of Zhejiang University (Engineering Science), 2006,40(2):348-351

Introduction A 9Cr-3Co-WVNbB steel is an advanced material for boiler pipe and tubes of fossil power plants with working temperature of 620°С [1,2].
Acknowledgements This study was supported by the Russian Science Foundation, Project no.14-29-00173.
Viswanathan, Creep resistant steels, Woodhead Publishing in Materials, Cambridge, England, 2008
Scarlin, The European Efforts in Material Development for 650°C USC Power Plants—COST522, ISIJ International 42 (2002) 1515-1519
Nelson, Ferritic/martensitic steels for next-generation reactors, Journal of Nuclear Materials 371 (2007) 37–52

Lee 1� 1 Center for Advanced Plasma Surface Technology, SungKyunKwan University, Suwon 440-746, South Korea 2 Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, South Korea Keywords: Al3Ti, manganese, intermetallics, oxidation Abstract.
Introduction The ordered intermetallic compounds of Al3Ti have received a strong interest as potential high temperature structural materials because of low density, high temperature strength and excellent oxidation resistance.
Experimental procedure The -325 mesh elemental powders of Al(99.5% pure), Mn(99.9% pure) and Ti(99.9% pure) were used as starting materials to yield the composition of (Al+8 at.

 20 30 40 50 60 70 80 90 2 � � � � (degree) Relative Intensity � L12-Al3Ti � � DO22-Al3Ti TiC DO23-Al3Ti � � � � � � � 
 
 
 
 
 
 

 
 
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 20 30 40 50 60 70 80 90 2�� � � (degree) Relative Intensity DO22-Al3Ti TiC DO23-Al3Ti 
 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 276MPa 207MPa 136MPa (b) � � � � � � � � � � 20 30 40 50 60 70 80 90 2�� � � (degree) Relative Intensity DO22-Al3Ti TiC DO23-Al3Ti 
 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 276MPa 207MPa 136MPa (b) � � � � � � � � � � (d) 500nm (d) 500nm Al-K���� Mn-K���� Ti-K���� (c) 10��� � Al-K���� Mn-K���� Ti-K���� (c) 10��� � (b) 5��� � Al-K���� Mn-K���� Ti-K���� (b) 5��� � (b) 5��� � Al-K���� Mn-K���� Ti-K���� 50nm (c) 50nm (c) (d) Journal

Composite materials based on FRP significantly increase the economic viability of construction of buildings and bridges [1,2].
Test program Test specimens and materials.
Bank, Structural design with FRP materials, Composite for Construction, John Willey and Sons Ltd, 2006
Saafi, Flexural Behaviour of Concrete Beams Reinforced with Glass Fiber Reinforced Polymer, ACI Structural Journal, Vol. 97, No 5, 2000, pp. 712-719
Garbacz, Investigation on Concrete Beams Reinforced with Basalt Rebars as an Effective Alternative of Conventional R/C Structures, Procedia Engineering, Elsevier, Science Direct, Volume 57, 2013, pp. 1183-1191