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[3] Zhang Xuebin.Experimenal Study on mix proportion and basic mechanical properties of Recycled Concrete[D].Xiangtan.Civil Engineering and Mechanics of Xiangtan University,2005

Properties of Geopolymer Concrete from Local Fly Ash (FA) and Palm Oil Fuel Ash (POFA) Monita Olivia1,a, Alfian Kamaldi1, Iskandar R Sitompul1, Ismed Diyanto1 and Edy Saputra2,b 1Civil Engineering Department, Faculty of Engineering, University of Riau, Pekanbaru, Riau 28293, Indonesia 2Chemical Engineering Department, Faculty of Engineering, University of Riau, Pekanbaru, Riau 28293, Indonesia amonita1306@yahoo.com, bedysaputra_eng@yahoo.com Keywords: fly ash, geopolymer concrete, modulus of elasticity, palm oil fuel ash, strength properties.
Previous studies reveal that the geopolymer has engineering properties and durability, which is equivalent or higher than the Ordinary Portland Cement (OPC) concrete.
Acknowledgements This research is funded by Research Grant from A2 Competency Grant Program Directorate General of Higher Education year 2006, Civil Engineering Department, Faculty of Engineering, University of Riau, Indonesia.
Rangan, in: Concrete Construction Engineering Handbook, edited by E.G.
Colloids and Surfaces A: Physicochemical and Engineering Aspects.

Evaluation for Stepped Apron against Erosion around Piers Chih-hsien Lin1, a, Kuei-Hsiang Cheng2,b and Cheng Chao3,c 1,2,3 The Green Engineering Technical Research Center, Kao Yuan University, Taiwan(R.O.C.)
Further, the topic of this study is to compare the different dimensions of aprons for apron deflecting characteristics, making the beach effect and take preventive measures, and in case of excessive cost, suitable sizes and sets for stepped apron are provided for reliable information and references for bridge engineers.
Fig.2 Taitung Bridge in August 2008 Marakot typhoon(old one in upstream, new one in downstream) Fig.3 Design of stepped apron set in downstream Surface Water Modeling System is two-dimensional flow simulation software (SMS-2D), developed by the United States Army Corps of Engineers Hydraulics, Laboratory (USACEWES), Environmental Modeling Research Laboratory (EMRL) of Brigham Young University, and the United States Federal Highway, Administration (FHWA), using the finite element method with the continuous flow equation and momentum equation solving, the topographic distribution grid, the rivers around the structure as a boundary, to analyze the local river flow field, water depth, the water of higher phenomena, to better explore the piers or structures near the water level, flow velocity, and local eddy current situation[7].
[3] Tai-Sheng Tung, in: Two-Dimensional Simulation and Comparison of Flow Depths around Bridge Piers in Wu River, Dep. of Civil and Hydraulic Engineering, FengChia University, Master's thesis, Taiwan (2000).
Yassin: Local Scour at Skewed Piers, Journal of Hydraulic Engineering, ASCE, Vol. 124(7), pp.756-760 (1998).

Rector of Universitas Sriwijaya Welcome Word from the Dean of Faculty of Engineering Universitas Sriwijaya Welcome to this publication comprising the selection of articles from the 2nd Sriwijaya International Conference on Engineering and Technology (SICETO 2023).
The Faculty of Engineering Universitas Sriwijaya is proud to have held an international conference of such a grand scale.
SICETO 2023 was the second meeting held at the Faculty of Engineering, University of Sriwijaya.
Dean Faculty of Engineering Universitas Sriwijaya Welcome Word from the SICETO 2023 Chairwoman Welcome to the 2nd edition of the Sriwijaya International Conference on Engineering and Technology 2023.
The participants of the seminar came from 11 countries and presented their research results in various scientific fields, including: · civil and structural engineering; · electrical and electronic engineering; · chemical engineering and science; · mechanical engineering; · architecture; · mining and geological engineering; · natural science.

The Uplift Behavior of Large Underground Structures in Liquefied Field Xiwen ZHANG1,a, Xiaowei TANG1,b, Qi SHAO1,c and Xu BAI1,d 1State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China aemail:zhangxw_11@163.com bemail: tangxw@dlut.edu.cn cemail:looker05@qq.com demail:williambaixu@gmail.com Keywords: Liquefaction, Uplift, Soil Flow, Soil-Structure Interaction, Earthquake Abstract: Soil liquefaction due to the earthquake causes serious damages and engineering problems, such as the reduction of the soil strength, large settlement of the ground surface, the flow of liquefied soil and the uplift behavior to the underground structures, and the large deformation induced by the uplift force threatens the stability and safety of the structures.
Idriss, et al: submitted to Journal of Geotechnical and Geoenvironmental Engineering (1975) [4] Guoxing Chen: submitted to Journal of Earthquake Engineering and Engineering Vibration (2007) [5] Degao Zou, Xianjing Kong, Ling H.I. et al: submitted to Journal of Geotechnical Engineering (2002) in Chinese [6] T.Tobita,G.
Tamura: submitted to Journal of Proceedings of the Society of Civil Engineers (1978) [10] R.E.

Introduction Rock bolts have been widely used for rock reinforcement in civil and mining engineering in order to ensure the stability of large rock engineering.
Chinese Journal of Rock Mechanics and Engineering, Vol.21(2002), p.379-384 [4] K.
Egger, Rock Mechanics Rock Engineering, Vol. 23(1990), p.201-229 [5] A.M.
Liu, Chinese Journal of Geotechnical engineering, Vol.10(1988), p. 8-19 [7] Z.H.Zou, Z.L.Wang, Chinese Journal of Geotechnical Engineering, Vol. 15(1993), p.71-79 [8] J.H.
Zhang, Chinese Journal of Geotechnical Engineering, Vol. 28(2006), p.29-32

Dynamic elastic-plastic analysis of reinforcement geogrids applied in high earth-rockfilled dam slope ZHU Ya-lin 1, 2,a, KONG Xian-jing 2,b and ZOU De-gao2,c 1 School of Civil and Hydraulic Engineering , Hefei University of Technology, Hefei, 230009, China. 2 Faculty of Infrastucture Engineering, Dalian University of Technology,Dalian, 116023,China.
The engineering practice is ahead of theory.
(in Chinese) [2] Jianming Zhao,Yaping Chang,Ning Chen.Journal of World Earthquake Engineering, Vol. 1 (2004) p.95.
Soil Dynamics and Earthquake Engineering.
Journal of Japan Dam Engineering.Vol.10 (2002) , p.93

After the program running, first, through the "New" command under the "Project" menu, create a new project shown in Fig.2. then click "OK" to enter the engineering interface shown in Fig.3, engineering interface is consist of three parts, the top of the left side is the parameter input window, the bottom of the left side is the data output window, and the right side is graphics output window.
Study on Prevention and Treatment Technology of Slope Engineering Disasters[D].
Loess Landslide, High Slope Stability Analysis and Engineering Application[D].
Nanjing: College of Civil Engineering Hohai University, Mar, 2004.
Geotechnical Engineering Technique, 2008, 22(3): 123-126.

Structural Damage Identification Method and Program Designing Based on Statistical Analysis Zhuobin Wei1, Ke Liu1 1Dept. of Logistics Command and Engineering, Naval University of Engineering, Tianjin 300450, China Keywords: principle component analysis, elliptical control figure, damage feature index, structure condition Abstract.
In engineering, it will mix noise into the measuring data, and error will produce in the process of measuring.
References [1] Feng Xin, Li Guoqiang, Zhou Jing, State-of-the-art of statistical identification for structural health diagnosis in civil engineering, 2005,25(2):105-113
[2] Housner G W，Bergman L A，Caughey T K，et al．Structural control: past，resent，and future[J]．Journal of Engineering Mechanics，1997，123(9)：897-971
[5] Yang Shu-zi, Wu ya, Xuan Jian-ping, Time series Analysis in Engineering Application[M], WUHAN:Publishing Company of Huazhong University, 2007

The Response OF Somatotype Characteristics OF Circular Underground Diaphragm Wall Structure Liu Yaodong1 Hu Wei1 Huang Dexin2 1College OF Civil Engineering And Architecture, Hubei University OF Technology,Wuhan ,China 2Nanjiang geological engineering survey and design institute,Chongqing ,China Email:282780225@qq.com Keywords: Circular underground continuous diaphragm wall, the tangential stress, radial stress, displacement Abstract: In this paper, study is based on analytical solution of internal force and displacement of circular underground continuous wall, the internal force and displacement of wall in different wall thickness, radius and depth were analyzed, the pattern of the internal force which changed with the body characteristic was discussed.
Because , in practical engineering, compared to a, t is very small, so when, that ,.This suggests that changes in wall thickness t has little effect on the radial stress .
Chinese mechanical engineering.2003.14 infinite at (17):1526-1529.In Chinese
Chinese Journal of geotechnical engineering.2008.30 (10):280-285.In Chinese
[6] DBJ08-6l-97 code for design of foundation pit engineering [s].