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Optimization of COD and Color Removal for Matang’s Landfill Leachate Treatment by Using Polyaluminum Chloride Mohd Faiz Muaz Ahmad Zamri1 , Mohd Suffian Yusoff1,a * , Hamidi Abdul Aziz1 and Mohd Anuar Kamaruddin1 1 School of Civil Engineering , Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300, Nibong Tebal, S.P.S, Pulau Pinang, Malaysia asuffian@usm.my Keywords: Leachate reattment, coagulation, polyaluminium chloride and central composite design Abstract.

Experiment Research on Activated Cement Zhang Qing1a , Cheng Heming1b , Cao Jing 1c , Song Zhigang1d , Gui Yue1e 1Faculty of Civil and Architectural Engineering of Kunming University of Science and Technology, Kunming, 650500, China a email: evanzhangqing@126.com, b email: chenghm@public.km.yn.cn, c email: cjlb@sina.com, d email: zhigang-s@163.com, e email: treq2010@163.com Keywords: activated Cement, super-plasticizer, grind, commercial concrete.
Acknowledgement This investigation was funded by the National Natural Science Foundation of China (No. 51108217) and was supported by Yunnan Province Academic Discipline Project (No. 2008ZC027M), and also was supported by Yunnan province education department fund (No. 2010Y384) and Construction of scientific research and experimental platform for urban underground space engineering department (Provincial departmental level project KKSY201006009).

Experimental Evaluation of Properties of 120 Years Old Concretes at Two Concrete Bridges in Slovakia PAULÍK Peter1, a *, BAČUVČÍK Michal2,b, ŠEVČÍK Patrik2,c, JANOTKA Ivan 2,d and GAJDOŠOVÁ Katarína1,e 1 STU, Faculty of Civil Engineering Radlinského 11, Bratislava, 81005, Slovakia 2 Building Testing and Research Institute, Studená 3, 82104 Bratislava, Slovakia apeter.paulik@stuba.sk, bigor.hudoba@stuba.sk, csevcik@tsus.sk, djanotka@tsus.sk, ekatarina.gajdosova@stuba.sk Keywords: properties, old concrete, bridges, strength, modulus of elasticity.
References [1] Geostatik: Záverečná práca, orientačný inžiniersko-geologický prieskum - Starý most cez Dunaj, (eng.: Final report, preliminary engineering-geological survey – Old Bridge over Danube), Bratislava, 2007

Performance of a slow-release type carboxylic polymer and its application Chong-Zhi Li1,a , Quan-Lin Niu 2,b , Guang-Ming He3,c, Nai-Qian Feng4,d 1 Beijing university of civil engineering and architecture，100044 2 Shangdong University of Technology，255049 3 Group of Beijing building materials, 100031 4 Tsinghua university，100084 a mail: lichongzhi@bucea.edu.cn; bmail:niuql00@mails.tsinghua.edu.cn; cmail:hgm1970@sina.com; dmail:fengnq@tsinghua.edu.cn Keywords: Carboxylic Polymer; Slowly active; Slump loss.
Table3 Remains and adsorption ratio of admixturein paste Admixture Time elapsed 0 5min 60min 120min 180min JSPC3002 Remains(mg/ml) 7.24×10-2 2.86×10-2 2.01×10-2 1.38×10-2 7.90×10-3 adsorption ratio 0 60.5% 72.2％ 81％ 89.1％ SLPC Remains(mg/ml) 7.24×10-2 3.94×10-2 3.12×10-2 2.27×10-2 1.89×10-2 adsorption ratio 0 45.6% 57.9％ 68.7％ 74％ 4.4 Result of concrete test The ordinary Portland cement(C) of 42.5#, machine-made blend sand(S) and gravel(G), mineral admixtures such as fly ash (FA)and slag(SL) were employed, there was 7~9% stone powder in the blend sand in the concrete tests, a mixing ratio of C40 concrete being applied in a construction engineering was adopted as follows, C：FA：SL：W：S：G =305：50：70：165： 808：1067, the polycarboxylic water reducer was used at a dosage of 0.75%, in which the polymer SLPC substituted JSPC3002 at a constitution of 0,30% and 50%, the aim was to see effects on the flowing ability of HPC in fig.4a and on the compressive strength of

., Kharkiv, Ukraine, 61070 2National University of Civil Defence of Ukraine, 94, Chernishevska str., Kharkiv, Ukraine, 61023 ay.skob@khai.edu, bdrevaly@ukr.net, сavas2006@ukr.net, dmaiboroda.roman@ukr.net Keywords: gas mixture explosion, pressure shock wave, maximum overpressure, allowable stress, bending moment, cantilever beam, probit analysis, eardrum rupture, lethal injury.
Kovalov, About need of calculations for the steel framework building in temperature influences conditions, Materials Science and Engineering, 708 (2019) 012065
Series: Materials Science and Engineering, 1164 (2021) 012083

.: civil engineering materials, Prentice-Hall, Upper Siddle River, New Jerse. (2001)Pinchin, D.
Kao: Experimental Investigation on Steel-Concrete Bond in Lightweight and Normal weight Concrete, Structural Engineering and Mechanics, Vol.17 (2004), No.2. p.141-152

Study on the Sustainable Development Strategy of China’s Exhibition Buildings — Take Nanning International Convention & Exhibition Center as an example Hong Cao1,a, Shengyu Meng1,b 1College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, China aredfreebird@sohu.com, bwebmaster@design-china.com Keywords: exhibition buildings, sustainable development; exhibition economy, Nanning International Convention & Exhibition Center Abstract.
Besides taking charge of lease and maintenance of the exhibition hall, the Company has abilities of exhibition planning and implementation, exhibition design and engineering service, basically realizing the integration of exhibition and operation.

Determination of Horizontal Deformation Monitoring Index for Powerhouse Dam of Feilai Gorge Project Huiqin YAO College of Civil & Hydroelectric Engineering of China Three Gorges University, Yichang, china yao5689@163.com Keywords: Dam, Horizontal Deformation, Monitoring Index, FEM Abstract.
Moreover, the condition of the dam and foundation changes with the time during operation, especially when engineering measures taken and special load situation encountered.

Engineering Situation Heng Zhou avenue bridge is a lead bridge belong to west Tan Heng loaced in Er Tang Yu Mushan town .The original bridge is a 2×16 m PRC hollow slab bridge, composed of 10 hollow slab , with total length 45.00m, width12.75m as shown in Fig.1.The original deck transverse slope is 2%.because of the modification of route and width, the north half keep original and transform the original bridge.
Beam body integrally jack-up method has application to several domestic engineering, the main advantage is no added phase ii constant load and less influence of the bearing capacity of the slab.
According to the structure characteristics of the bridge, Midas/Civil was used to build the space grillage model [7].

Materials for Advanced Power Engineering Vol. 21, Part I (2002) 401
Challanges to Civil and Mechanical Engineering in 2000 and beyond.