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(a) (b) Fig.6 Micro morphology of rapid propagation area (S=600MPa, N=2.22×105) (a) plastic fracture area (b) brittle fracture area Why the rapid propagation area appeared.The ability of materials to resist crack propagation called fracture toughness represented by KΙc, which is a constant for materials.
Journal of Constructional Steel Reseach, Vol.58(2002), p.3~20
Journal of Structural Division,Vol.108(1982), p.3~88
Materials Science and Engineering, Vol.
Materials Science and Engineering, Vol.

Preparation of raw materials clay, CBs and water.
Mohajerani, Recycling Cigarette Butts In Light-Weight Fired Clay Bricks: Journal of Construction Materials.
Gomze, Improvement of Insulation Properties of Conventional Brick Products: Materials Sciences, 589 (2008), p. 1-6
Zanarini, Thermal Conductivity of Clay Bricks: Journal of Materials in Civil Engineering, 16 (1) (2004)
[27] Ghazi, Al-Marahleh, Production of light weight ceramics teils from local materials: American Journal of Applied Sciences 2 (4) (2005), p. 778-783.

It is found that the optimal proportion of SnO2 to graphene is 8：1 (wt%) for the electrospun composite materials.
Most commercial lithium-ion batteries use graphitic materials as anode material.
Zhang, Journal of Materials Chemistry A, 2 (2014) 10211-10217
Novoselov, Nature Materials, 6 (2007) 183-191
Hyeon, Advanced Functional Materials, 15 (2005) 1845-1850

Graphene quantum dots, a kind of advanced carbon material, have become the frontier of condensed matter physics and material science.
These finding may present a new feasible way for exploring GQDs based materials.
Nature materials, 2009, 8, 235-242
Science, 2008, 320, 356-358
The Journal of organic chemistry, 2004, 69, 5179-5186

In addition models of thermal conductivity for porous materials mostly only take a single solid component into consideration [8].
This study chooses clay, peat soil, mushroom planting soil (discarded), sand and expanded perlite as solid materials of the planting soil, all of which are commonly used in green roof.
Additionally when different materials mix, the smaller size granule would filled pore of other materials, increasing the contact area of solid particles, and finally lead to the growth of ETC.
Acknowledgements This research was supported by National Natural Science Foundation of China (Project No. 50978261) and Science Research Foundation of Xihua University (Project No.
References [1] Ministry of Construction, PRC: Technical specification for planted roof(JGJ 155-2007) (China Building Materials Press,2007) (In Chinese) [2] Mingfang Tang, Zhenjing Yang and Kaili Zheng: Journal of Chongqing Univ.Vol.30(5) (2007), p.1(In Chinese) [3] Jagjiwanram and Ramvir Singh: Applied Thermal Engineering.Vol.24 (2004),p. 2727 [4] C.

Materials and Methods Cold Spray Depositions.
He, A Review of 3D Printing Technologies for Soft Polymer Materials, Advanced Functional Materials. 30 (2020) 2000187. https://doi.org/https://doi.org/10.1002/adfm.202000187
Lees, Recent Development in Thermoplastic Composites: A Review of Matrix Systems and Processing Methods, Journal of Thermoplastic Composite Materials. 1 (1988) 277–296. https://doi.org/10.1177/089270578800100305
Mitchell, Machine learning: Trends, perspectives, and prospects, Science. (2015). https://doi.org/10.1126/science.aaa8415
Rondinelli, Theory-Guided Machine Learning in Materials Science, Frontiers in Materials. 3 (2016) 28. https://doi.org/10.3389/fmats.2016.00028

Earthen materials have been used in construction for centuries.
Materials and Techniques Specimen preparation.
Mechanical properties of the materials.
Berge, The ecology of building materials., second ed., Architectural Press, Elsevier Science, 2009
Vamshykrishna, The Future of Civil Engineering with the Influence and Impact of Nanotechnology on Properties of Materials, Procedia Materials Science 10 (2015) 111 – 115 [36] R.S.C.

It has been pointed out that the size effects of elasticity may be caused by the non-local influence between discrete structures of the materials[11,12].
Yang et al. further simplified Fleck and Hutchinson’s formulation, and introduce a linear elastic model for isotropic materials[18].
For homogeneous, centrosymmetric, isotropic materials, the strain energy density takes the following form[14] (1) in which, and are Lame’s constants and , and are constants in the HSGE model (see Toupin[13] and Mindlin[14] ).
E5090890) and Natural Science Foundation of ZheJiang (Y407241) for this project are greatly acknowledged.
Cohen: Journal of Polymer Science Part B-Polymer Physics Vol. 44, (2006), p. 1482 [11].

Springer Series in Materials Science, Springer Verlag, Berlin Heidelberg, 2007.
Materials Science & Engineering A 521-522 (2009) 102-105. http://dx.doi.org/10.1016/j.msea.2008.09.107
European Journal of Materials 3 (2023). https://doi.org/10.1080/26889277.2023.2208159
Materials Science Forum 706-709 (2012) 835-840. https://doi.org/10.4028/www.scientific.net/MSF.706-709.835
Materials Science & Engineering 442(1) (2006) 543–546. https://doi.org/ 10.1016/j.msea.2006.02.210

Polymer materials have been used here sometimes as merely an admixture to construction materials.
Here the problem is that the people knowledgeable about polymers lack a background in building materials, and those experienced in building materials are ignorant about polymer technology.
Materials Collection and Preparation In this study, locally available materials of Bangladesh were used.
Beygi, Evaluation of mechanical strength of epoxy polymer concrete with silica powder as filler, World Applied Sciences Journal, 9 (2010) 216–220
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