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Effect of Shrinkage Reducing Admixture on properties of Pumping Concrete Jian Mei ZHOU1 Run Xia HAO2 (1 School of Chemistry and Chemical Engineering,UST Inner Mongolia,Baotou 014010,China 2 School of Architecture and Civil Engineering,UST Inner Mongolia,Baotou 014010,China) zjmwjy@yahoo.cn, zhouzhou1015@yahoo.com.cn Key words: Pumping Concrete, Shrinkage Reducing Admixture, Dry shrinkage Abstract: In order to improve the crack resistance of pumping concrete, effect of shrinkage reducing admixture on the performance of pumping concrete was stuied, the results showed that dry shrinkage decreased obviously when shrinkage reducing admixture was added into pump concrete , and 28d shrinkage can be reduced by over 40% when the dosage of shrinkage reducing admixture was 1.5% , while the shrinkage reducing admixture can significantly improve the fresh pumping concrete workability, improve compressive strength of 28d, but the flexura strength decreases slightly.

Porosity of the Ternary Gypsum-Based Binders with Different Types of Pozzolan DOLEŽELOVÁ Magdaléna1, a * and VIMMROVÁ Alena1, b 1Czech Technical University in Prague – Faculty of Civil Engineering – Department of Materials Engineering and Chemistry, Thákurova 7, 166 29 Prague 6, Czech Republic amagdalena.dolezelova@fsv.cvut.cz, bvimmrova@fsv.cvut.cz Keywords: Gypsum, ternary binders, crushed ceramic, microsilica, GBS, porosity, mechanical properties, moisture resistance.

The Finite Element Analysis of Asphalt Pavement with Function Layer under Temperature-Load Action Chuang Du1,2,a, Yanyan Li1,2 , Rong Guo1,2andShibin Ma1,2 1College of Civil Engineering, Hebei University of Technology, Tianjin, 300401,China 2Civil Engineering Technology Research Center of Hebei Province, Tianjin, 300401,China aduch1976@sohu.com Keywords:Function layer,Asphalt pavement, Reflection crack,Stress Abstract.In order to study the performance of asphalt pavement with function layer under temperature-load coupling action, the thickness of surface layer, the module of surface layer and was analyzed to abtain their influence on the function layer stress using the finite element method.

Concrete shrinkage-induced damage taking into account aggregate restraint Zhan-Qi Guo 1a , Guiming Wang1,2b, Piet Stroeven 1c and Zhonghe Shui2d 1 Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands 2 School of Materials Science and Engineering, Wuhan University of Technology, China a mail: z.guo@tudelft.nl, b mail: guimingw@whut.edu.cn, c mail: p.stroeven@tudelft.nl, d mail: zhonghesh@whut.edu.cn Keywords: Concrete, Shrinkage, Crack, Discrete element method, Finite element method ABSTRACT The influence of concrete meso-structure and coarse aggregate size on early age crack is studied.

Optimal Placement of Sensors for Damage Characterization using Genetic Algorithms Yunju Yan 1 , Huanguo Chen 2 and Jiesheng Jiang 3 School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an, 710072, China 1 yjyan_2895@nwpu.edu.cn, 2 chen8025@126.com, 3jiangjs@nwpu.edu.cn Keywords: genetic algorithms, damage detection, optimization, WPA Abstract.
References [1] Ostachowicz, WM Krawczuk, M. and Cartmell, MP: In, Proceedings of the International Conference on Structural Control and Health Monitoring, SMART, May 22-25 (2001) [2] Staszewki, W., and Worden, K.: 8th Annual SPIE International Symposium on Smart Structures and Materials, Newport Beach, CA, , March (2001), p. 4326-77 [3] Chun, S., Kim, Y., and Kapania, R.: International Conference on Computational Engineering and Sciences, July (2002)

Dynamic Modeling of Surface Subsidence Induced by Underground Mining HaoLiang Han1,2,a, NaiLian Hu1 and Bo Cui1 1School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing, China, 100083 2 Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA, USA, 16801 ahaolianghan@126.com Keywords: Surface subsidence; Knothe time function; Dynamic modeling; Section curve Abstract.

Tetra-(N-phenylpyrazole)-porphyrin/b-cyclodextrin Incorporated CNT Film Modified Hemoglobin Sensor Jing-Lin He1,a,*, Wei Zou1, Jun-Xia Wang1, Li-Hong Zeng1, Zhong Cao1,b,*, and Dong-Mei Luo2,c 1 Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, P.
China 2 Environment and Civil Engineering School, Foshan University, Foshan 528000, P.

Real Truck Loading of a Full-Scale Orthotropic Steel Deck Model Chunsheng Wang1, a, Tao Zhang1, b, Bingning Fu1, c, Liang Tang2, d and Liji Huang2, e 1Department of Bridge Engineering, College of Highways, Chang’an University, Xi’an, Shanxi Province, 710064, P.R.
Dissertation, Department of Civil and Environmental Engineering, Lehigh University, Bethlehem PA (2002)

The fabrication was carried out at the Engineering Section of the Farm Mechanization Unit within the Agricultural Technology Department at the Federal College of Freshwater Fisheries Technology in New Bussa, Niger State, Nigeria.
The local population mainly consists of farmers, fishermen, traders, and civil servants, with fishing and fish farming being the predominant professions among those residing near the lake [3]. 2.2 Materials Used for Construction The materials used for the construction of the drainage lysimeter are shown in (Table 1) and the qualities of such materials are also described.
Journal of Engineering Research and Reports, (2020) 13(4): 15-21

., Dep. of Civil and Hydra.
Engng., Dalian Univ. of Tech., Dalian, Liaoning, 116024, China a gaolin@dlut.edu.cn, bdmyan@student.dlut.edu.cn Keywords: concrete; strain rate; moisture content; strength; failure mechanism Abstract: Understanding the behavior of concrete under dynamic loading conditions is an issue of great significance in earthquake engineering.
This investigation will be of great significance for engineering practice and provide necessary database for the further study of dynamic constitution.