Search results

Study of Concrete Strength Prediction Using Warm Water Curing Sheng Szu Peng1, a, Yan Ren Chen2, b 1 Department of Civil Engineering, National Taiwan University of Science and Technology, Minghsin University of Science and Technology, No. 1, Hsin-Shing Road, Hsin-Fung, Hsin-Chu 304, Taiwan 2 Department of Civil Engineering, National Taiwan University of Science and Technology, Minghsin University of Science and Technology, No. 1, Hsin-Shing Road, Hsin-Fung, Hsin-Chu 304, Taiwan a conan@must.edu.tw, ba62823700182000@yahoo.com.tw Keywords: warm water, curing, strength Abstract: In this study, the 50℃ warm water is applied to accelerate curing of concrete and to increase the design strength to 210kgf/cm2 (3000psi), 280kgf/cm2 (4000psi), and 490kgf/cm2 (7000psi) by using water/cement (w/c) ratio of 0.6, 0.5, and 0.35 respectively.
The warm water curing of concrete study in this paper may be applied to the prediction of the concrete strength for engineering in the future based on the advantages over room temperature curing.
In this paper, the concrete predicted strength was precise and useful for any others project of material of engineering and summary as following: 1.
Thus warm water curing method can be applied in the industry to shorten the project duration and increase cost saving of the engineering project.
[5] Chinese Institute of Civil and Hydraulic Engineering, “Concrete Construction Specifications”, Science and technical press, 2000.

Analysis on out-of-plane seismic stability performance of aluminium beams under cyclic bending Zheng Zhang1, a, Xuechao Chen2, b, Yongchao Ma1, c and Zhibin Wang2, d 1School of Civil Engineering, Fujian University of Technology, No.3 Xueyuan Road, University Town, Shangjie Minhou, Fuzhou, Fujian, P.R.
China, 350118 2College of Civil Engineering, Fuzhou University, No.2 Xueyuan Road, University Town, Shangjie Minhou, Fuzhou, Fujian, P.R.
Introduction At present, in the world scope, aluminium structures have been widely used in various fields of civil engineering.
That a large number of engineering practices at home and abroad, aluminium structures can adapt to the modern engineering structures towards long-span and light development as well as the need to withstand harsh conditions, to meet the requirements of modern construction technology industrialization.
The research results have certain promoting effects on seismic design specification and engineering application of aluminium structures.

Time-varying Law Experimental Research of the Interaction of Concrete Structure and Formwork Support during the Construction Period TangQingrong 1, a, FuZhiqiang 2,b 1 School of Civil Engineering, Chongqing University, Chongqing,400045,China 2 Chongqing source architectural planning design co., LTD.
ENGINEERING MECHANICS, 2002,19(5):62-66.
Engineering Structure．1996,18(3):247-257
[4] Fang Dongping, Geng Chuandong,et al.Analysis of reinforced concrete structures during construction[J].China Civil Engineering Journal, 2002,33(6):57-61.
China Civil Engineering Journal, 2002,35(2):1-7.

FRACTURE MODE OF E50 SOLDER NOTCHED BARS AT LOW TEMPERATURE Wan-zhen Wang1,a, Dan-li Zhang2,b, You-qian Huang1,c, Xu-chang Hao3,d 1Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China 2Department of Civil Engineering; Water Conservancy School of Zheng zhou; Zhengzhou 450050; China 3 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730055, China awangwanzhen1975@sina.com, bdanli419@163.com, chyq-qyh@163.com, dhaoxuntianxia@163.com Keywords: E50 solder, notched bars, low temperature, fracture test, fracture mode Abstract.
On the other hand, idealized brittle fracture defined in the framework of linear-elastic fracture mechanics does not strictly represent a precise, physical fracture mode in engineering materials, since most materials sustain a certain amount of plastic deformation before fracture takes place.
Wang, in: Engineering Mechanics.
Wang, in: Fatigue & Fracture of Engineering Materials & Structures.
Joribio, in: Engineering Fracture Mechanics.

For booking services, civil aviation has electronic ticket service, and the passenger can machine by printing a boarding pass himself.
In comparison with the civil aviation, high-speed rail train can enjoy the network, sleeping and other activities also being relatively comfortable.
However, because of strict security measures, taking the civil aviation can only be sent to the security station, having one hour passenger need to stay alone in the waiting room.
While the time is not very tight, high-speed railway has more advantage than the civil aviation in comfort.
Because of the high-speed, punctuality, and less sensitive to weather conditions, high speed railway can compete with civil aviation in this part of the source.

Deformation Monitoring and Numerical Analysis at the Top of Slope of a Foundation Pit Jie Liu 1,2,a , Hengheng Cao 1,b and Xiaofeng Jiang1,2,c 1 School of Civil Engineering, Tianjin University, Tianjin 300072, China 2Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin 300072, China atdlj5536@sina.com, bcaohengheng@xnmsn.cn, cjxfss@sina.com Keywords: Foundation Pit, Deformation of the Top of Slope, Monitoring, Numerical Analysis.
It can simulate the properties of most typical engineering materials, including geological materials such as soil and rock.
As a general simulation calculation tool, ABAQUS can solve many problems of underground engineering.
References [1] W.Y.Li and L.Wu: Safety and environmental engineering, (2004).In Chinese
Hou: Foundation pit engineering handbook [M].Beijing: Building industry press in China, (1997)

Mechanical Properties of Engineered Cementitious Composites Mixture Bashar S.
Mohammed 1,a, Muhammad Hafiz Baharun 2,b , Muhd Fadhil Nuruddin 3,c , Odu Paul Duku Erikole 4,d and Nadhir Abdulwahab Murshed 5,e 1,2,3,4,5Department of Civil Engineering 1,2,3,4,5Universiti Teknologi PETRONAS, 1,2,3,4,5Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia.
The aim of the research is to develop engineered cementitious composite mixtures satisfying the self-compacting concrete requirements and to evaluate the hardened properties of self-compacted ECC mixtures.
Li, Improved fiber distribution and mechanical properties of engineered cementitious composites by adjusting the mixing sequence, Cement & Concrete Composites. 32 (2012) 342-348
Li, Effect of fiber volume fraction on the off-crack plane energy in strain-hardening engineered cementitious composites.

Calculation Model Engineering survey.
Journal of Civil Engineering: Simplification of the floor model in analysis of tall building structure .Vol. 05 (1998) , p.73-78 [2] Xiao, Z.B., Ma, Y., Qiu, T..(2003).
Journal of engineering design: Reinforced concrete structure design with floor partial discontinuity.
Journal of Jilin Architecture and Civil Engineering Institute :Effects of openings on the regular frame structure .

Naveed Anjum4,d and Munaza Komal5,e & Khalid Hussain6,f 1Department of Civil Engineering, Khwaja Fareed University of Engineering & Information Technology, 64200 RYK, Punjab, Pakistan 2Department of Civil Engineering, College of Engineering & Technology, University of Sargodha, Sargodha 40100, Punjab, Pakistan 3Department of Civil Engineering, Khwaja Fareed University of Engineering & Information Technology, 64200 RYK, Punjab, Pakistan 4Department of Civil Engineering, Khwaja Fareed University of Engineering & Information Technology, 64200 RYK, Punjab, Pakistan 5Department of Agriculture Engineering, University of Agriculture, Faisalabad, Pakistan 6Department of Civil Engineering, Khwaja Fareed University of Engineering & Information Technology, 64200 RYK, Punjab, Pakistan amuhammadadnan19990@gmail.com, baqeel.ahmed@uos.edu.pk, *cdr.zaheer@kfueit.edu.pk, dnaveed.anjum@kfueit.edu.pk, emunazakomal630@gmail.com, fkhalidhussainjalbani6@gmail.com Keywords: Steel Fibers (SF) and Nylon
In conclusion, this study provides valuable insights into the benefits of incorporating steel and nylon fibers in concrete, offering an effective means of optimizing the material's overall performance for diverse engineering applications.
Further exploration into the long-term behavior and cost-effectiveness of fiber-reinforced concrete is recommended for a comprehensive understanding of its feasibility in practical engineering applications. 1.
Engineers and construction professionals can leverage this knowledge to design more resilient and durable infrastructure that can withstand a wider range of stressors and environmental conditions.

Duration characteristics of ground motion based on Wenchuan Earthquake Shunan Lu1，2，a,Changhai Zhai1，b and Lili Xie1，3，c 1School of Civil Engineering, Harbin Institute of Technology, 150090, China 2College of Civil Engineering and Architecture, Harbin University of Science and Technology，150080，China 3Institute Engineering Mechanics, China Earthquake Administration，150080，China alsn@hit.edu.cn, bzch-hit@hit.edu.cn, cllxie@iem.cn Keywords: Duration, Attenuation relations, Site effects, Directivity effects, Hanging wall effects Abstract.
The authors are very grateful to Institute Engineering Mechanics, China Earthquake Administration for all records and site categories contributed.
Seventh World Conference on Earthquake Engineering, Vol. 5, Istanbul, pp.677-680. (1980) [2] Maojiang Yin, Zongming Huang and Shaoliang Bai, “comparison and improvement on the duration of ground motion”, Journal of engineering resistance, Vol.2(6), pp.43-46.(1999)(in Chinese) [3] Esteva L, Rosenblueth E.
“Espectros de temblores a distancias moderadas y grandes”, Bulletin of the Mexican Society of Seismic Engineering, Vol.2, pp:1-18.(1964) [4] Trifunac MD, Brady AG, “A study on the duration of strong ground motion”, Bulletin of the Seismological Society of America.
Vol.65,pp:581-626.(1975) [5] Trifunac MD, Westermo BD, “Duration of strong earthquake shaking”, Soil Dynamics and Earthquake Engineering .Vol.1 pp:117-121.(1982) [6] Novikova EI, Trifunac MD, “Duration of strong strong motion: physical basis and empirical equation”, Report No. 93-02, Department of Civil Engineering, University of Southern California, Los Angeles. (1993) [7] Eduardo Reinoso and Mario Ordaz, “Duration of Strong ground motion during Mexican earthquakes in terms of magnitude, distance to the rupture area and dominant site period”, Earthquake Engineering and Structural Dynamics Vol.30, pp:653-673.(2001)