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Influence of Limestone Powder on the Performance of Cementitious Materials Yun Dong*1,2,3,a, K.T.Xiao2,3,b and H.Q.Yang 2,3,c 1College of Water Resources and Hydroelectric Engineer, Wuhan University, Wuhan, 430072, China 2Yangtze River Scientific Research Institute, Wuhan, 430010, China 3Research Center on Water Engineering Safety and Disaster Prevention, the Ministry of Water Resources, Wuhan, 430010, China adongyun@mail.crsri.cn, bxiaokt@mail.crsri.cn, cyanghq@mail.crsri.cn Key word: Limestone Powder; Fly Ash; Cementitous Materials; Mechanism of action Abstract: This paper study on the mortar strength, particle gradation and mortar fluidity of binary and ternary systems for cementitious materials with limestone powder or fly ash, analyze the influence of limestone powders with different specific surface areas and contents on the performance of cementitious materials; and research the performance of limestone powder in cementitious materials by means of micro analysis.
This article concentrates on the research of the particle gradation, mortar strength, micro structure and hydration characteristics of binary, ternary systems forcementitous materials with limestone powder or fly ash; and analyzes the mechanism of limestone powder in the cementitous material system.
Test Materials and Method Materials The P·O 42.5 Portland cement accorded with GB 175-2007 and the Grade I fly ash accorded with GB/T 1596-2005 were used.
Refer to Table 1 for materials chemical compositions and Table 2 for limestone and fly ash main performance indices.
Journal of Building Materials, Vol.1 (1988), p. 187-191 (in Chinese) [4] Zhang Chunmei, RAMACHANDRAN V S, Influence of Calcium Carbonate Micro Aggregate on the Hydration of Tricalcium Silicate .Journal of the Chinese Ceramic Society,Vol. 16 (1988), p. 110-117(in Chinese)

As shown in Fig.1, the side length of the 0.1 kg cubic concentrated explosive charge is 0.04 m, with its mesh size 5 mm, and as the blasting center distance increases, the mesh has a very sparse gradient coefficient of two. 73926 nodes and 68688 elements were created in total, and all the materials were divided into Eulerian meshes, which allows multiple materials in one element.
In an Euler solver, the numerical mesh remains undeformed, while several kinds of materials are allowed to flow freely from one element to another.
This solver is suitable for modeling fluid phase materials, such as gas or liquid.
International Journal of Rock Mechanics & Mining Sciences. 44(2007)730–738 [3] Yang Xiumin, Jin Yiliang, Liu Dianzhong.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS.

Usually, Titanium and Aluminium stacked materials are drilled before aircraft assembly and this poses a major challenge in machining due to the different machinability of materials.
Journal of Materials Processing Technology, 259:270-281, September 2018
Applied Sciences, 10:845, January 2020
Applied Science and Manufacturing, 2019
Modeling thread milling forces in mini-hole in dental metallic materials.

The high quality and functional green building materials can therefore be easily fabricated.
Introduction Green building materials are composed of renewable, rather than nonrenewable resources.
Those materials such alumina (Al2O3) and titania (TiO2) there are candidate materials of energy and green building materials.
The inorganic materials of alumina titania (TiO2) are basic materials used in the modern building for example, harder Al2O3 tile and photocatalyst of TiO2 film.
Diau, Journal of The Electrochemical Society, Vol. 156 (2009), p.

Due to the great developments in modern science and technology, the application field of porous metal materials has been largely extended, and the demand for materials has also been increased.
With the development of science & technology and the improvement on the demand for industrial technique, membrane materials and its preparing technology has been rapidly advanced.
Catalytic porous materials are special functional materials with active elements distributed in the porous material[4].
This makes powder metallurgical technology one of the most rapidly developed branches in the field of material science and engineering.
The Chinese Journal of Nonferrous Metals 2004，Vol.14 No.2：320-322 [5] L.V.

Biomedical materials is the newest branch of biomedical science[1-3].
It is a frontier subject formed by the intersection of biology, medicine, chemistry, physics and materials science.
Femtosecond Laser Processing of Polymer Materials The advantages of macromolecular materials in cost, mechanical properties, functional pertinence and technological complexity make it gradually replace some inorganic materials or metals, thus a variety of macromolecular materials based devices have appeared.
Optical Materials, 2017, 73:25-32
Journal of Materials Processing Technology, 2016, 241:120-128

Effect of grain orientation distribution on anisotropy of idealized granular materials Bo Zhou1, a, Jiwei Li1, b, Peng Shuai1, c 1 School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, Hubei of China azhoubohust@smail.hust.edu.cn, biamliji_007@yahoo.com.cn, cpengshuai90331@sina.com Keywords: granular materials, orientation distribution, anisotropy, Discrete Element Method Abstract.
The regular grain orientation of granular materials is a common phenomenon in nature.
For cohesiveless granular materials, and can be determined by the equations.
Sun, Q., et al., Advances in the micro-macro mechanics of granular soil materials.
Computational Materials Science, 2004. 29: p. 494-498

Bledzki, Calculation of elastic properties of natural fibers, Journal of Materials Science, 36 (2001) 3715-3720
Shakhmenko, Ecological materials for frame housing, Scientific Journal of Riga Technical University, Material Science.
Smith, Influence of chemical treatments on adhesion properties of hemp fibres, Journal of Colloid and Interface Science, 356 (2011) 303-310
Sicakova, Utilization of alternative materials in lightweight composites, Journal of Cleaner Production, 34 (2012) 116-119
Schwarzova, Changes in the properties of composites caused by chemical treatment of hemp hurds, International Journal of Chemical, Biomolecular, Metallurgical, Materials Science and Engineering, 8 (2014) 363-367

Long-term durability of advanced polymeric materials in hygrothermal environments is of vital concern.
Pioneering work [1-6] has been conducted on diffusion and viscoelastic deformation in polymeric materials.
The effective time theory to predict long-term behavior of polymeric materials experiencing physical aging from short-term experiments [13] is analogous to the method of reduced variables for thermorheologically simple materials [7], both of which may be described with the concept of a material clock [8].
Elahi: Mechanics of Time-Dependent Materials Vol. 4 (2000), p. 107
Hodge: Science Vol. 267 (1995), p. 1945

Analysis of application of new photochromic materials in design of kindergarten Bo Xu 1, a , weiping Hu 2, b 1 Art of design, Faculity of Art and Communication, Kunming University of Science and Technology 2 Faculity of Art and Communication, Kunming University of Science and Technology axubo_10@sina.com, byncaid@sina.com, Keywords: Materials; design; smart materials; photochromic Abstract: New smart materials have taken the lead position in modern design, photochromic materials with base of polymer gradually step into the range of new decorative materials in design of kindergarten, abundant color is the intuitional demonstration to attract children, however, if the color doesn’t change at all for a long term, children will be bored in both aesthetics and vision, such new photochromic materials bring a new breakthrough for design of kindergarten.
With the rapid development of science and technology, humans have been able to display and utilize colors by various means in which the research and application of smart materials bring the new colorful life for us.
Guangdong building materials. 2007 [3] YongMing Dao, Inorganic photoluminescence materials and application [M].Chemical industry press. 2005 [4] YongMing Dao, Inorganic photoluminescence materials and application Ⅱ[M].
Chemical education. 2009 (4) [6] Ying Wang, Jian li, KaLi Gu,Intelligent color coating [J].China journal of surface engineering, 2007, 20 (3) : 9-14
Materials review, 005，19，(10)：3l一35.